可以发送信息，但无法接受数据

Question

package com.example.myroom.sendmessage;

import android.app.Activity;
import android.content.Context;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class MainActivity extends Activity {

private Button send;
private EditText input;
private TextView output;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    input=(EditText)this.findViewById(R.id.input);
    output=(TextView)this.findViewById(R.id.output);
    send=(Button) this.findViewById(R.id.send);

    send.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            final String Output=input.getText().toString().trim();
            new Thread(new Runnable() {
                @Override
                public void run() {
                    String path="http://192.168.11.254:8080";
                    try {
                        URL url=new URL(path);
                        //打开http连接
                        HttpURLConnection conn=(HttpURLConnection) url.openConnection();

                        conn.setDoInput(true);
                        conn.setDoOutput(true);
                        conn.setRequestMethod("POST");
                        //conn.setRequestMethod("GET");
                        conn.setConnectTimeout(1000*30);//连接超时时间
                        conn.setReadTimeout(1000*30);//读取数据的超时时间
                        conn.setUseCaches(false);
                        conn.setRequestProperty("content-type","application/x-www-from-urlencoded");
                        //对服务器端读取或写入数据
                        DataOutputStream out=new DataOutputStream(conn.getOutputStream());
                        out.writeBytes(Output);
                        out.flush();
                        out.close();
                        //获取响应数据

                        InputStreamReader in=new InputStreamReader(conn.getInputStream());
                         //BufferedReader br=new BufferedReader(new InputStreamReader(conn.getInputStream()));
                        BufferedReader br=new BufferedReader(in);
                        String readLine;
                        String line="";
                        while((readLine=br.readLine())!=null){
                            line+=readLine;
                        }
                        in.close();

                        final String finalLine = line;
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                output.setText("内容:"+ finalLine);
                                Toast.makeText(MainActivity.this,"try!!!",Toast.LENGTH_SHORT).show();
                            }
                        });

                        //System.out.println("result"+result);
                        conn.disconnect();//关闭连接

                    } catch (MalformedURLException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }

                }
            }).start();

        }
    });
}

}

Answer 1

求助下。。。