问题描述

URLConnection 连接 ServerSocket 无法获取流里面的数据？

Service端

 public static void main(String[] args) throws Exception {
        ServerSocket serverSocket = new ServerSocket(9999);

        Socket socket = serverSocket.accept();
        socket.setSoTimeout(20000);
        OutputStream out = socket.getOutputStream();
        InputStream inputStream = socket.getInputStream();

        Reader reader = new InputStreamReader(inputStream);
        char chars[] = new char[512];
        int len;
        while ((len = reader.read(chars)) != -1) {
            String str = new String(chars, 0, len);
            System.out.println(str);
        }
        System.out.println("--------------------");
        socket.close();

    }

Client 端

 public static void main(String[] args) throws Exception {

        URL url = new URL("http://127.0.0.1:9999/work");
        URLConnection con = url.openConnection();
        con.setDoOutput(true);
        con.setDoInput(true);

        OutputStream out = con.getOutputStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream()));

        out.write("Hello World".getBytes());
        out.flush();
//        String line = "";
//        for (line = br.readLine(); line != null; line = br.readLine()) {
//            System.out.println(line);
//        }
        out.close();
    }

Server端输出：
POST /work HTTP/1.1
User-Agent: Java/1.6.0_45
Host: 127.0.0.1:9999
Accept: text/html, image/gif, image/jpeg, ; q=.2, */; q=.2
Connection: keep-alive
Content-type: application/x-www-form-urlencoded
Content-Length: 0

---

没有输出Hello World! 求解

解决方案

你这样改一下，service端口先处理inputstream，后处理outputstream；client端先处理outputstream，后处理inputstream。

解决方案二：

http://blog.csdn.net/yanzi1225627/article/details/22222735

解决方案三：

Client 改成这样 拿到了

 public static void main(String[] args) throws Exception {

        URL url = new URL("http://127.0.0.1:9999/work");
        URLConnection con = url.openConnection();
        con.setDoOutput(true);
        con.setDoInput(true);

        OutputStream out = con.getOutputStream();

        out.write("Hello World".getBytes());
        out.flush();
        BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream()));
        out.close();
    }

谢 2楼