获取网络文本查看器--HTML源码

来源：互联网发布：r创建数据集 dataframe 编辑：程序博客网时间：2024/06/06 03:40

<span style="font-size:24px;">package com.melody.html;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import com.melody.html.tool.Tools;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.widget.Button;import android.widget.TextView;public class MainActivity extends Activity {private Button bt;private TextView tv;Handler handler = new Handler(){public void handleMessage(Message msg) {tv.setText((String) msg.obj);};};protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);init();}public void click(View v){final String path = "http://192.168.119.69/baidu1.html";Thread t = new Thread(){public void run() {try {//1.创建URL对象URL url = new URL(path);//2.获取连接对象，进行设置HttpURLConnection conn = (HttpURLConnection) url.openConnection();//3.设置属性conn.setRequestMethod("GET");conn.setReadTimeout(8000);conn.setReadTimeout(8000);//4.判断求情码是否成功，if(conn.getResponseCode() == 200){//获取服务器返回的输入流InputStream is = conn.getInputStream();//使用自定义方法获取流里的数据String text = Tools.getTextFromStrem(is);//发送消息至消息队列，主线程执行handlemessage,来刷新UIMessage msg = handler.obtainMessage();msg.obj = text;handler.sendMessage(msg);}} catch (Exception e) {e.printStackTrace();}}};t.start();}//初始化控件private void init() {tv = (TextView) findViewById(R.id.tv);}}</span>

////////////////////////////////////////////////新建工具类////////////////////////////////////

<span style="font-size:24px;">package com.melody.html.tool;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;/** * 从流中获取文本工具类 * @author Administrator * */public class Tools {public static String getTextFromStrem(InputStream is){byte[] b = new byte[1024];  //定义一个1K的字节数组int len;//定义数组长度//定义一个字节数组输出流，保存数据   写入数据所以用输出流  读入写出ByteArrayOutputStream bos = new ByteArrayOutputStream();//开始往bos字节数组写入数据    try {while((len = is.read(b)) != -1){bos.write(b, 0, len);    }//把字节数组输出流转换成字节数组，然后用字节数组构造一个字符串//String text = new String(bos.toByteArray(),"GBK");   //指定文件编码  如果乱码的话这里改，默认UTF-8String text = new String(bos.toByteArray());return text;} catch (IOException e) {e.printStackTrace();}return null;}}</span>

//////////////////////////////////添加权限//////////////////////////////////

<span style="font-size:24px;"> <uses-permission android:name="android.permission.INTERNET"/></span>

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