连接来自java写的服务器，连接成功后在textview中输出“连接服务器成功！”

服务器端：

import java.io.*;

import java.net.*;

public class MyServer {

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

ServerSocket ss = new ServerSocket(30000);

while(true) {

Socket s = ss.accept();

PrintStream ps = new PrintStream(s.getOutputStream());

ps.println("连接服务器成功！");

ps.close();

s.close();

}

}

}客户端：

package com.example.yanzhuang.caculation;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.net.Socket;

public class Main6Activity extends AppCompatActivity implements View.OnClickListener {

TextView tv1;

TextView tv2;

TextView tv3;

EditText et1;

EditText et2;

Button button;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main6);

tv1 = (TextView) findViewById(R.id.tv1);

tv2 = (TextView) findViewById(R.id.tv2);

tv3 = (TextView) findViewById(R.id.tv3);

et1 = (EditText) findViewById(R.id.et1);

et2 = (EditText) findViewById(R.id.et2);

button = (Button) findViewById(R.id.btn);

button.setOnClickListener(this);

}

@Override

public void onClick(View v) {

switch(v.getId()) {

case R.id.btn:

new Thread(new Runnable() {

@Override

public void run() {

String s1 = null;

String s2 = null;

s1 = et1.getText().toString();

s2 = et2.getText().toString();

try {

Socket socket = new Socket(s1, Integer.parseInt(s2));

BufferedReader br = new BufferedReader(

new InputStreamReader(

socket.getInputStream()));

String line = br.readLine();

Log.d("Main6Activity", "line:" + line);

tv3.setText(line);

br.close();

socket.close();

} catch(Exception e) {

e.printStackTrace();

}

}

}).start();

break;

default :

break;

}

}

}布局文件：

app界面：

最终目标是要写个tcp调试助手的。