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Леонид Дубравский
Asked:2020-06-18 16:38:54 +0000 UTC2020-06-18 16:38:54 +0000 UTC

如何使用 com.sun.net.httpserver.HttpServer 处理 http get/post/put/delete 请求？

  • 772

有一个简单的 Http Server

private com.sun.net.httpserver.HttpServer server = null;
    public void startHttpServer(int port) {
            try {
                server = com.sun.net.httpserver.HttpServer.create(new InetSocketAddress(port), 0);
            } catch (IOException e) {
                e.getStackTrace();
            }
            System.out.println("HTTP server started at " + port);
            server.createContext("/", new RootHandler());
            server.createContext("/api/0.1/device_configuration", new PostDeviceConfiguration());
            server.createContext("/api/0.1/order", new PutCancellationOrder());
            server.createContext("/api/0.1/order", new PostOrder());

            server.setExecutor(Executors.newCachedThreadPool());
            server.start();
        }

这样的服务器可以区分 get/post/rest/delete http 方法吗？如果是，该怎么做？您需要使用相同的 URL 实现 post 和 put。

java

1 个回答

  1. Best Answer

    您可以确定正在使用哪种方法HttpExchange.getRequestMethod()

    import com.sun.net.httpserver.HttpServer;

import java.io.OutputStream;
import java.net.InetSocketAddress;

public class TestHttpServer {
    public static void main(String[] args) throws Exception {
        HttpServer server = HttpServer.create(new InetSocketAddress(8080), 0);
        server.createContext("/", http -> {
            String response = createResponse(http.getRequestMethod().toUpperCase());
            http.getResponseHeaders().add("Content-Type", "text/html");
            http.sendResponseHeaders(200, response.length());
            OutputStream os = http.getResponseBody();
            os.write(response.getBytes());
            os.close();
        });
        server.setExecutor(null); 
        server.start();
        System.out.println("http://localhost:8080/");
    }

    private static String createResponse(String requestMethod) {
        String resp = "<svg viewbox='-10 -10 20 20' height='100vh'><text text-" +
           "anchor='middle' stroke='red' stroke-width='0.05' font-size='4'>%s</text></svg>";
        if ("GET".equals(requestMethod)) 
            return String.format(resp, "GET");
        if ("POST".equals(requestMethod)) 
            return String.format(resp, "POST");
        return "unknown method";
    }
}
    • 3

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