Timur Musharapov's questions

小伙伴们，你们好！我正在为 wonlex kt24 申请。有 android 4.4，即 kit kat 🍫，为此安装了旧版本（0.63），其中仍然支持旧 SDK。在模拟器上，启动了最启动的项目，但在时钟上它甚至没有启动，尽管正在安装 apk。在哪里挖？

更改targetSdkVersion为 19 也无济于事。

this.tiles.map((x) => [x]).filter(x => x !== deletedTile) = reopenTile;

我尝试这样，但在过滤器块中它说：

赋值表达式的左侧必须是变量或属性访问。

我尝试这样：

this.tiles[this.tiles.map((x) => [x]).filter(x => x !== deletedTile)] = reopenTile;

但它给出了：

类型 'TileData[][]' 不能用作索引类型。

我想替换deletedTile为reopenTile. 怎么了？

PS基于此解决方案：

var items = Array(523, 3452, 334, 31, 5346);

items[items.map((e, i) => [i, e]).filter(e => e[1] == 3452)[0][0]] = 1010

我正在着陆。 https://merrymaker14.github.io/portfolio

但是 Font Awesome 中的图标不能用作链接。

<!-- Font Awesome -->
     <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
...
<div class="media">
<ul>
    <li>    
        <a target="_blank" class="btn btn-social-icon btn-vk" href="https://vk.com/merrymaker14">
            <span class="fa fa-vk"></span>
        </a>
    </li>
    ...
</ul>
</div>

为什么？该示例在链接中。

我想制作一个常规的进度条，但它不起作用。

应用程序.tsx：

const [progress, setProgress] =  useState(0);
...
useEffect(() => {

   setInterval(() => {
     setProgress(progress + 1)
   }, 1000);

}
});
...
return (
...
<ProgressBar progress={progress} />
...
)

进度条.tsx：

import React, {useEffect} from "react";
import { View, Animated } from "react-native";

type ProgressBarProps = {
  progress: number
}

const ProgressBar: React.FC<ProgressBarProps> = (props) => {
  const animation = new Animated.Value(props.progress);

  useEffect(() => {
    Animated.timing(animation, {
      toValue: props.progress,
      duration: 500
    }).start();

    console.log(props.progress)
  });

  return (
    <View style={{ flex: 1, borderColor: "red", borderWidth: 2, borderRadius: 4}}>
      <Animated.View
        style={{
          width: animation.interpolate({
            inputRange: [0, 1],
            outputRange: ["0%", "100%"],
            extrapolate: "clamp"
          }),
          height: '10px',
          backgroundColor: 'red'
        }}
      />
    </View>
  );
};

export default ProgressBar;

结果，页面上只显示了一条红色的短线。 https://codesandbox.io/s/github/merrymaker14/react-native-web-example-as-testtask

type pictureType = {
  portrait: string,
  landscape: string
}

const picture: pictureType = {
  portrait: require('./img/nc_ss19_620x960px_1.png'),
  landscape: require('./img/960x576_1.png')
};

const [orientation, setOrientation] = useState('');
setOrientation('portrait') // Например
...
<Image source={picture[orientation]} />

元素隐式具有“任何”类型，因为“字符串”类型的表达式不能用于索引类型“图片类型”。

如何正确描述类型？尝试了不同的方法。

在 App.js 中

<Route exact path='/page/:id' component={Dashboard} />

在 Dashboard.js 中，我可以获取 id，但是如何在不每次都编写的情况下进一步获取它？

仪表板.js：

import React, { Component } from 'react'
import PokemonList from '../pokemon/PokemonList'

export default class Dashboard extends Component {
    render() {
        const id = this.props.match.params.id;

        return (
            <div >
                    <PokemonList id={id} />
            </div>
        )
    }
}

有没有更好的办法？然后我也必须继续转发它。

无法在渲染中操作数据，这很奇怪。

编码：

class Pagination extends React.Component {
  constructor(props) {
    super(props);
  }

  componentDidMount() {
    console.log(this.props);
    const { id, count } = this.props;

    let pages;
    if (count != 0) {
      pages = Math.ceil(count / 12);
    }
  }

  render () {
    console.log(this.pages); // undefined, в componentDidMount все нормально

    ...

我错过了什么？

$session = DB::table('test_sessions')
    ->select('id as session_id')
    ->where('test_sessions.test_id', '=', $request->get('test_id'))
    ->where('test_sessions.user_id', '=', Auth::user()->id)
    ->whereDate('test_sessions.end_at', '>=', Carbon::now('Europe/Moscow')) // Условие не отрабатывает.
    ->get();

即使 end_at 时间已经过期，我仍然会收到该条目。如果替换Carbon::now('Europe/Moscow')为NOW()，结果相同。

end_at - 类型字段datetime；

日期晚 3 小时写入。并且，相应地，结果也是从基地开始的。如何解决？莫斯科时区。

发布 JS 代码：

this.$root.end_at = new Date();
this.$root.end_at.setTime(this.$root.end_at.getTime() + (this.test_info[0].time_limit * 60 * 1000));
this.$root.end_at = this.$root.end_at.toISOString().slice(0, 19).replace('T', ' ');```

使用 this.date = 'June 6, 2019' 格式变量，一切正常，但我需要一个特定的时间 + 15 分钟。键入Date.now()（添加 15 分钟），然后对其进行处理，但将字符串值更改为，例如，new Date().toDateString()我在输出中得到一组 NaN。如何解决？

我有一个项目，我是使用 akella 的教程完成的：https ://github.com/merrymaker14/vuegl 我决定将它上传到 GitHub Pages。 https://merrymaker14.github.io/vuegl

但他通常不会浏览页面，尽管他似乎已经设置了所有内容。为什么？

nuxt.config.js：

import pkg from './package'

/* nuxt.config.js */
// only add `router.base = '/<repository-name>/'` if `DEPLOY_ENV` is `GH_PAGES`
const routerBase = process.env.DEPLOY_ENV === 'GH_PAGES' ? {
  router: {
    base: '/vuegl/'
  }
} : {}

export default {
  mode: 'universal',

  /*
  ** Headers of the page
  */
  head: {
    title: pkg.name,
    meta: [
      { charset: 'utf-8' },
      { name: 'viewport', content: 'width=device-width, initial-scale=1' },
      { hid: 'description', name: 'description', content: pkg.description }
    ],
    link: [
      { rel: 'icon', type: 'image/x-icon', href: '/favicon.ico' }
    ]
  },

  /*
  ** Customize the progress-bar color
  */
  loading: { color: '#fff' },

  ...routerBase,

  router: {
     middleware: 'pages',
     //base: '/examples/vuegl/'
  },

  /*
  ** Global CSS
  */
  css: [
  ],

  /*
  ** Plugins to load before mounting the App
  */
  plugins: [
  ],

  /*
  ** Nuxt.js modules
  */
  modules: [
  ],

  /*
  ** Build configuration
  */
  build: {
    /*
    ** You can extend webpack config here
    */
    extend(config, ctx) {
    }
  }
}

有一个代码：

var coinsProfit = {
  "etf_china": {
    "plus": 100,
    "minus": -50
  },
  "red_etf_china": {
    "plus": 100,
    "minus": -50
  },
  "etf_america": {
    "plus": 100,
    "minus": -40
  },
  "red_etf_america": {
    "plus": 100,
    "minus": -40
  },
  "bitcoin": {
    "plus": 2000,
    "minus": -30
  },
  "red_bitcoin": {
    "plus": 2000,
    "minus": -30
  },
  "dollar": {
    "plus": 60,
    "minus": -200
  },
  "red_dollar": {
    "plus": 60,
    "minus": -200
  },
  "eu": {
    "plus": 80,
    "minus": -40
  },
  "red_eu": {
    "plus": 80,
    "minus": -40
  },
  "gbr": {
    "plus": 555,
    "minus": -20
  },
  "red_gbr": {
    "plus": 555,
    "minus": -20
  },
  "rub": {
    "plus": 666,
    "minus": -50
  },
  "red_rub": {
    "plus": 666,
    "minus": -50
  },
  "yen": {
    "plus": 222,
    "minus": -30
  },
  "red_yen": {
    "plus": 222,
    "minus": -30
  },
  "etf_gold": {
    "plus": 777,
    "minus": -35
  },
  "red_etf_gold": {
    "plus": 777,
    "minus": -35
  },
  "etf_IT": {
    "plus": 888,
    "minus": -11
  },
  "red_etf_IT": {
    "plus": 888,
    "minus": -11
  },
  "etf_usa": {
    "plus": 73,
    "minus": -88
  },
  "red_etf_usa": {
    "plus": 73,
    "minus": -88
  },
  "etf_japan": {
    "plus": 200,
    "minus": -98
  },
  "red_etf_japan": {
    "plus": 200,
    "minus": -98
  }
};
var coinsDataList = Object.keys(this.coinsProfit);

function plus(coinRandom) {
  getEquelsCoin(coinRandom);
};

function minus(coinRandom) {
  getEquelsCoin(coinRandom, 'minus');
};

function getEquelsCoin(coinRandom, sign = 'plus') {
  for (var key in coinsProfit) {
    if (key == coinRandom) {
      coinsProfit[key].plus;
      if (sign == 'plus') {
        return coinsProfit[key].plus;
      } else {
        return coinsProfit[key].minus;
      }
    }
  }
};
let count = 0;
coinRandom = coinsDataList[Math.floor(Math.random() * coinsDataList.length)];
count += plus(coinRandom);

UPD：如果您写入函数

console.log(coinsProfit[coinRandom].plus);
return coinsProfit[coinRandom].plus;

然后显示一个数字，但调用时的函数本身由于某种原因返回未定义。

有以下方法：

public void AddFocusEffect(AnimationClip focusClip, GameObject[] focusElements)
    {
        // AnimationClip focus = Resources.Load("Focus", typeof(AnimationClip)) as AnimationClip;

        foreach (GameObject focusElement in focusElements)
        {
            focusElement.AddComponent<Outline>();
            Animation anim = focusElement.AddComponent<Animation>();
            anim.clip = focusClip;
        }
    }

focusClip 通过检查器挂起（因为注释掉的代码由于某种原因不起作用），结果，所有组件都正确创建，看起来好像我们自己添加和更正了它们，但不起作用（不像通常情况下）。

为什么会出现这种行为？

在控制器中有代码（Spring MVC）

@RequestMapping(value = "/books", method = RequestMethod.GET)
public String books(final HttpServletRequest request, final Model model) {
    if (request.getParameter("name") || request.getParameter("publishing_house") || request.getParameter("the_year_of_publishing")) {
        final List<Book> books = bookService.booksBySearch();
    } else {
        final List<Book> books = bookService.getAll();
    }
    model.addAttribute("books", books);
    logger.debug("running in BookController.java -> books()");
    logger.info(JSON.toJSON(request.getRequestURI()));
    logger.info(JSON.toJSON(books));
    return "/book/list.jsp";
}

结果，在编译时，我得到一个错误：

[错误] /C:/Users/Tim/eclipse-workspace/springMVC-mybatis-postgresql-fbcda0e11b1addcac43be8813e16b8b703022591/src/main/java/com/core/newbie/controller/BookController.java:[53,42] 错误的操作数类型二元运算符'||' 第一种类型：java.lang.String 第二种类型：java.lang.String

为什么以及如何解决？

JSP在场上用下划线发誓，但我没有找到任何信息表明这是不可能的。

Tomcat堆栈：

SEVERE: Servlet.service() for servlet [jsp] threw exception
javax.el.PropertyNotFoundException: Property [the_year_of_publishing] not found on type [com.core.newbie.model.Book]
...
21:50:32.693 [http-nio-8080-exec-5] DEBUG 
org.springframework.web.servlet.DispatcherServlet - Could not complete request
org.apache.jasper.JasperException: An exception occurred processing [/WEB- 
INF/book/showBook.jsp] at line [84]

81:                 <td><a href="#">${book.name}</a></td>
82:                 <td>${book.author}</td>
83:                 <td></td>
84:                 <td>${book.the_year_of_publishing}</td>

Book.java，部分代码：

public String getPublishingHouse() {
    return publishing_house;
}

public void setPublishingHouse(final String publishing_house) {
    this.publishing_house = publishing_house == null ? null : publishing_house.trim();
}

public Integer getTheYearOfPublishing() {
    return the_year_of_publishing;
}

public void setTheYearOfPublishing(final Integer the_year_of_publishing) {
    this.the_year_of_publishing = the_year_of_publishing;
}

在这两个领域发誓在 JSP 中，删除了一个。有什么问题？

我得到一个类似的 JSON 数组：

[com.core.newbie.controller.UserController]（信息来自）：[{"age":24,"id":1,"password":"001","userName":"001"},{"age":24,"id":2,"password":"002","userName":"002"},{"age":24,"id":3,"password":"002","userName":"002"},{"age":24,"id":4,"password":"004","userName":"004"},{"age":24,"id":5,"password":"005","userName":"005"},{"age":14,"id":111,"password":"12","userName":"derrick-2"}]

UserController，右侧代码：

@RequestMapping("/users")
public String users(final Model model) {
    final List<User> users = userService.getAll();
    model.addAttribute("users", users);
    logger.debug("running in UserController.java -> users()");
    logger.info(JSON.toJSON(users));
    return "/user/users.jsp";
}

我正在尝试在 users.jsp 中显示它：

Пользователи:
=<c:forEach begin="0" end="${users.length() -1}" var="user" items="${users}">
    <div>
        ${user.userName}
    </div>
    <br />
</c:forEach>

但它不输出。

$(users) 输出：

[com.core.newbie.model.User@5fc33319, com.core.newbie.model.User@6a8d7cfc, com.core.newbie.model.User@708bb2c2, com.core.newbie.model.User@500e9d80, com.core.newbie.model.User@16133763, com.core.newbie.model.User@1778c3c1] 

同时，在通常的 User (1) 的情况下，一切都正确显示，来自 UserController 的代码：

@RequestMapping("/showUser")
public String showUser(final HttpServletRequest request, final Model model) 
{
    final int userId = Integer.parseInt(request.getParameter("id"));
    final User user = userService.getUserById(userId);
    model.addAttribute("user", user);
    logger.debug("running in UserController.java -> showUser()");
    logger.info(JSON.toJSON(request.getRequestURI()));
    logger.info(JSON.toJSON(user));
    return "/user/showUser.jsp";
}

UPD：UserServiceImpl.java，获取列表的一部分：

@Override
@Select("select * from n_user")
public List<User> getAll() {
    return userMapper.findAll();
}

UPD2：编辑后代码变成了这样：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Пользователи</title>
</head>
<body>
    Пользователи:
    <c:forEach var="user" items="${users}">
        <div>
            <c:out value="${user.userName}" />
        </div>
        <br />
    </c:forEach>
</body>
</html>

页面上仅显示“用户：”一词。${user.id} 和 ${user} 都不会在循环中输出任何内容。

无法使用 .从表中正确获取所有记录MyBatis。

错误跟踪：

[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /C:/Users/Tim/eclipse-workspace/springMVC-mybatis-postgresql-fbcda0e11b1addcac43be8813e16b8b703022591/src/main/java/com/core/newbie/controller/UserController.java:[49,52] incompatible types: com.core.newbie.model.User cannot be converted to java.util.List<com.core.newbie.model.User>
[ERROR] /C:/Users/Tim/eclipse-workspace/springMVC-mybatis-postgresql-fbcda0e11b1addcac43be8813e16b8b703022591/src/main/java/com/core/newbie/impl/UserServiceImpl.java:[29,8] com.core.newbie.impl.UserServiceImpl is not abstract and does not override abstract method getAll() in com.core.newbie.service.UserService
[ERROR] /C:/Users/Tim/eclipse-workspace/springMVC-mybatis-postgresql-fbcda0e11b1addcac43be8813e16b8b703022591/src/main/java/com/core/newbie/impl/UserServiceImpl.java:[59,23] getAll() in com.core.newbie.impl.UserServiceImpl cannot implement getAll() in com.core.newbie.service.UserService
  return type java.util.List<com.core.newbie.model.User> is not compatible with com.core.newbie.model.User
[ERROR] /C:/Users/Tim/eclipse-workspace/springMVC-mybatis-postgresql-fbcda0e11b1addcac43be8813e16b8b703022591/src/main/java/com/core/newbie/impl/UserServiceImpl.java:[57,5] method does not override or implement a method from a supertype
[ERROR] /C:/Users/Tim/eclipse-workspace/springMVC-mybatis-postgresql-fbcda0e11b1addcac43be8813e16b8b703022591/src/main/java/com/core/newbie/impl/UserServiceImpl.java:[60,26] cannot find symbol
  symbol:   method findAll()
  location: variable userMapper of type com.core.newbie.mapper.UserMapper
[INFO] 5 errors 
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE

用户映射器.xml：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.core.newbie.mapper.UserMapper">
<resultMap id="BaseResultMap" type="com.core.newbie.model.User">
    <id column="id" property="id" jdbcType="INTEGER"/>
    <result column="user_name" property="userName" jdbcType="VARCHAR"/>
    <result column="password" property="password" jdbcType="VARCHAR"/>
    <result column="age" property="age" jdbcType="INTEGER"/>
</resultMap>

<sql id="Base_Column_List">
    id, user_name, password, age
</sql>

<select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer">
    select
    <include refid="Base_Column_List"/>
    from n_user
    where id = #{id,jdbcType=INTEGER}
</select>

<select id="findAll" resultMap="BaseResultMap">
    select * from n_user
</select>

<!--<select id="selectAllWithPagination" resultMap="BaseResultMap">
    select * from n_user
</select>-->

<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    delete from n_user
    where id = #{id,jdbcType=INTEGER}
</delete>

<insert id="insert" parameterType="com.core.newbie.model.User">
    insert into n_user (id, user_name, password,
    age)
    values (#{id,jdbcType=INTEGER}, #{userName,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR},
    #{age,jdbcType=INTEGER})
</insert>

<insert id="insertSelective" parameterType="com.core.newbie.model.User">
    insert into n_user
    <trim prefix="(" suffix=")" suffixOverrides=",">
        <if test="id != null">
            id,
        </if>
        <if test="userName != null">
            user_name,
        </if>
        <if test="password != null">
            password,
        </if>
        <if test="age != null">
            age,
        </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
        <if test="id != null">
            #{id,jdbcType=INTEGER},
        </if>
        <if test="userName != null">
            #{userName,jdbcType=VARCHAR},
        </if>
        <if test="password != null">
            #{password,jdbcType=VARCHAR},
        </if>
        <if test="age != null">
            #{age,jdbcType=INTEGER},
        </if>
    </trim>
</insert>

<update id="updateByPrimaryKeySelective" parameterType="com.core.newbie.model.User">
    update n_user
    <set>
        <if test="userName != null">
            user_name = #{userName,jdbcType=VARCHAR},
        </if>
        <if test="password != null">
            password = #{password,jdbcType=VARCHAR},
        </if>
        <if test="age != null">
            age = #{age,jdbcType=INTEGER},
        </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
</update>

<update id="updateByPrimaryKey" parameterType="com.core.newbie.model.User">
    update n_user
    set user_name = #{userName,jdbcType=VARCHAR},
    password = #{password,jdbcType=VARCHAR},
    age = #{age,jdbcType=INTEGER}
    where id = #{id,jdbcType=INTEGER}
</update>
</mapper>

用户.java（模型）：

package com.core.newbie.model;

import javax.persistence.*;
import java.util.Set;

public class User {

private Integer id;

private String userName;

private String password;

private Integer age;

@ManyToMany
@JoinTable(name = "user_roles", joinColumns = @JoinColumn(name = "user_id"),
        inverseJoinColumns = @JoinColumn(name = "role_id"))
private Set<Role> roles;

public Integer getId() {
    return id;
}

public void setId(final Integer id) {
    this.id = id;
}

public String getUserName() {
    return userName;
}

public void setUserName(final String userName) {
    this.userName = userName == null ? null : userName.trim();
}

public String getPassword() {
    return password;
}

public void setPassword(final String password) {
    this.password = password == null ? null : password.trim();
}

public Integer getAge() {
    return age;
}

public void setAge(final Integer age) {
    this.age = age;
}

public Set<Role> getRoles() {
    return roles;
}

public void setRoles(Set<Role> roles) {
    this.roles = roles;
}
}

用户服务：

package com.core.newbie.service;

import com.core.newbie.model.User;

public interface UserService {
User getUserById(int userId);

//  User findByUsername(String username);

void insetUser(User user);

User getAll();
}

UserServiceImpl.java：

package com.core.newbie.impl;

import com.core.newbie.mapper.UserMapper;
import com.core.newbie.model.User;
import com.core.newbie.service.UserService;

import java.util.List;

import org.apache.ibatis.annotations.Select;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service("userService")
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;

@Override
public User getUserById(final int userId) {
    return userMapper.selectByPrimaryKey(userId);
}

@Override
public void insetUser(final User user) {
    userMapper.insert(user);
}

@Override
@Select("select * from n_user")
public List<User> getAll() {
    return userMapper.findAll();
}
}

用户控制器.java：

package com.core.newbie.controller;

import com.alibaba.fastjson.JSON;
import com.core.newbie.model.User;
import com.core.newbie.service.UserService;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

import javax.servlet.http.HttpServletRequest;

@Controller
@RequestMapping("/user")
public class UserController {
Logger logger = Logger.getLogger(UserController.class);

@Autowired
private UserService userService;

@RequestMapping("/showUser")
public String showUser(final HttpServletRequest request, final Model model) 
{
    final int userId = Integer.parseInt(request.getParameter("id"));
    final User user = userService.getUserById(userId);
    model.addAttribute("user", user);
    logger.debug("running in UserController.java -> showUser()");
    logger.info(JSON.toJSON(request.getRequestURI()));
    logger.info(JSON.toJSON(user));
    return "/user/showUser.jsp";
}

@RequestMapping("/users")
public String users() {
    final List<User> users = userService.getAll();
    logger.debug("running in UserController.java -> users()");
    logger.info(JSON.toJSON(users));
    return "/user/users.jsp";
}
}

如何在 Spring 中分离角色？例如，如果管理员（来自数据库的值）为 true，则在 jsp 中打开一个特定链接以供查看，并且对其他用户（与其他角色）。

这是通过 Spring Security 完成的，对吧？

UPD：欢迎任何建议。有人加减号，请在评论中退订。

出现上述错误。

测试本身：

// Copyright (c) 1998-2016 Core Solutions Limited. All rights reserved.
// 
============================================================================
// CURRENT VERSION CNT.5.0.1
// 
============================================================================
// CHANGE LOG
// CNT.5.0.1 : 2016-08-26, derrick.liang, creation
// 
============================================================================
package com.core.newbie.action;

import com.alibaba.fastjson.JSON;
import com.core.newbie.model.User;
import com.core.newbie.service.UserService;
import org.apache.log4j.Logger;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:spring-mybatis.xml"})
public class UserActionTest {
private static final Logger logger = Logger.getLogger(UserActionTest.class);
private UserService userService;


@Autowired
public void setUserService(final UserService userService) {
    this.userService = userService;
}

public UserService getUserService() {
    return userService;
}

@Test
public void test1() {
    final User user = userService.getUserById(1);
    logger.info(JSON.toJSON(user));
}

@Test
public void test2() {
    final User user = new User();
    user.setId(111);
    user.setAge(14);
    user.setPassword("12");
    user.setUserName("derrick-2");
    userService.insetUser(user);
    logger.info(JSON.toJSON(user));
}
}

spring-mybatis.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:context="http://www.springframework.org/schema/context"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans.xsd
   http://www.springframework.org/schema/context
   http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 自动扫描 -->
<context:component-scan base-package="com.core.newbie"/>
<!-- 引入配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="classpath:jdbc.properties"/>
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
    <property name="driverClassName" value="${driver}"/>
    <property name="url" value="${url}"/>
    <property name="username" value="${username}"/>
    <property name="password" value="${password}"/>
    <!-- 初始化连接大小 -->
    <property name="initialSize" value="${initialSize}"/>
    <!-- 连接池最大数量 -->
    <property name="maxActive" value="${maxActive}"/>
    <!-- 连接池最大空闲 -->
    <property name="maxIdle" value="${maxIdle}"/>
    <!-- 连接池最小空闲 -->
    <property name="minIdle" value="${minIdle}"/>
    <!-- 获取连接最大等待时间 -->
    <property name="maxWait" value="${maxWait}"/>
</bean>
<!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource"/>
    <!-- 自动扫描mapping.xml文件 -->
    <property name="mapperLocations" value="classpath:mapping/*.xml"/>
</bean>
<!-- DAO接口所在包名，Spring会自动查找其下的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.core.newbie.mapper"/>
    <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource"/>
</bean>
</beans>

痕迹：

Tests run: 2, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 6.063 sec 
<<< FAILURE!
test1(com.core.newbie.action.UserActionTest)  Time elapsed: 2.455 sec  <<< 
 ERROR!
java.lang.IllegalStateException: Failed to load ApplicationContext
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:99)
at org.springframework.test.context.DefaultTestContext.getApplicationContext(DefaultTestContext.java:101)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:319)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:212)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:232)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:175)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Caused by: org.springframework.beans.factory.BeanInitializationException: 
Could not load properties; nested exception is java.io.FileNotFoundException: class path resource [jdbc.properties] cannot be opened because it does not exist
at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:89)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:265)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:162)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:609)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:121)
at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:100)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:250)
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContextInternal(CacheAwareContextLoaderDelegate.java:64)
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:91)
... 31 more
Caused by: java.io.FileNotFoundException: class path resource 
[jdbc.properties] cannot be opened because it does not exist
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:158)
at org.springframework.core.io.support.EncodedResource.getInputStream(EncodedResource.java:143)
at org.springframework.core.io.support.PropertiesLoaderUtils.fillProperties(PropertiesLoaderUtils.java:98)
at org.springframework.core.io.support.PropertiesLoaderSupport.loadProperties(PropertiesLoaderSupport.java:175)
at org.springframework.core.io.support.PropertiesLoaderSupport.mergeProperties(PropertiesLoaderSupport.java:156)
at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:80)
... 41 more

test2(com.core.newbie.action.UserActionTest)  Time elapsed: 0.465 sec  <<< 
ERROR!
java.lang.IllegalStateException: Failed to load ApplicationContext
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:99)
at org.springframework.test.context.DefaultTestContext.getApplicationContext(DefaultTestContext.java:101)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:319)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:212)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:232)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:175)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Caused by: org.springframework.beans.factory.BeanInitializationException: 
Could not load properties; nested exception is java.io.FileNotFoundException: class path resource [jdbc.properties] cannot be opened because it does not exist
at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:89)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:265)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:162)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:609)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:121)
at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:100)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:250)
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContextInternal(CacheAwareContextLoaderDelegate.java:64)
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:91)
... 31 more
Caused by: java.io.FileNotFoundException: class path resource 
[jdbc.properties] cannot be opened because it does not exist
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:158)
at org.springframework.core.io.support.EncodedResource.getInputStream(EncodedResource.java:143)
at org.springframework.core.io.support.PropertiesLoaderUtils.fillProperties(PropertiesLoaderUtils.java:98)
at org.springframework.core.io.support.PropertiesLoaderSupport.loadProperties(PropertiesLoaderSupport.java:175)
at org.springframework.core.io.support.PropertiesLoaderSupport.mergeProperties(PropertiesLoaderSupport.java:156)
at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:80)
... 41 more


Results :

Tests in error: 
test1(com.core.newbie.action.UserActionTest): Failed to load ApplicationContext
test2(com.core.newbie.action.UserActionTest): Failed to load ApplicationContext

Tests run: 2, Failures: 0, Errors: 2, Skipped: 0

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------

安装Maven的时候报错No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?，甚至创建了环境变量。IDE：用于 EE 的 Eclipse。

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>growthing-02</groupId>
<artifactId>growthing-02</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>growthing-02 Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
    <!--spring version-->
    <spring.version>4.0.2.RELEASE</spring.version>
    <!--mybatis version-->
    <mybatis.version>3.2.6</mybatis.version>
    <!--log4j version-->
    <slf4j.version>1.7.7</slf4j.version>
    <log4j.version>1.2.17</log4j.version>
</properties>
<dependencies>

    <!--<dependency>-->
    <!--<groupId>junit</groupId>-->
    <!--<artifactId>junit</artifactId>-->
    <!--<version>4.12</version>-->
    <!--&lt;!&ndash;This means it will be loaded only under development&ndash;&gt;-->
    <!--<scope>test</scope>-->
    <!--</dependency>-->

    <!--spring core jars-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-oxm</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!--<dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context-support</artifactId>
        <version>${spring.version}</version>
    </dependency>
-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <!--mybatis core jars-->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>${mybatis.version}</version>
    </dependency>

    <!--spring-mybatis-->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>1.2.2</version>
    </dependency>

    <!--java ee-->
    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
        <version>7.0</version>
    </dependency>

    <!--postgresql db-->
    <dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <version>9.4-1200-jdbc41</version>
    </dependency>

    <!--dbcp jar, using for configuring db information in applicationContext.xml-->
    <dependency>
        <groupId>commons-dbcp</groupId>
        <artifactId>commons-dbcp</artifactId>
        <version>1.2.2</version>
    </dependency>

    <!--JSTL tag jar-->
    <dependency>
        <groupId>jstl</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>

    <!--log-->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>${log4j.version}</version>
    </dependency>
    <!--format log-->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.1.41</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>${slf4j.version}</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>${slf4j.version}</version>
    </dependency>

    <!--jason-->
    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.9.13</version>
    </dependency>
    <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-api</artifactId>
        <version>RELEASE</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
    </dependency>
    <dependency>
        <groupId>org.thymeleaf</groupId>
        <artifactId>thymeleaf</artifactId>
        <version>2.1.4.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.thymeleaf</groupId>
        <artifactId>thymeleaf-spring4</artifactId>
        <version>2.1.4.RELEASE</version>
    </dependency>
</dependencies>
<build>
    <!--<finalName>main</finalName>-->
    <plugins>
        <!--<plugin>-->
            <!--<groupId>org.apache.maven.plugins</groupId>-->
            <!--<artifactId>maven-compiler-plugin</artifactId>-->
            <!--<configuration>-->
                <!--<source>1.7</source>-->
                <!--<target>1.7</target>-->
            <!--</configuration>-->
        <!--</plugin>-->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.3</version>
            <configuration>
                <warName>main</warName>
                <outputDirectory>D:\apache-tomcat-8.5.11\webapps</outputDirectory>
            </configuration>
        </plugin>
    </plugins>
    <!--<resources>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.xml</include>
            </includes>
        </resource>
    </resources>-->
</build>

我什至指出

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <configuration>
        <source>1.9</source>
        <target>1.9</target>
    </configuration>
</plugin>

结果相同。