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[操作系统]android网络请求之get方法


package com.jredu.helloworld.activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.webkit.WebView;import android.widget.Button;import android.widget.TextView;import com.jredu.helloworld.R;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;public class HttpUrlConnectionGetActivity extends AppCompatActivity {  WebView webView;  Button button;  TextView success;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_http_url_connection_get);    webView = (WebView) findViewById(R.id.baidu);    success = (TextView) findViewById(R.id.success);    button = (Button) findViewById(R.id.button);    button.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {
/*第一种方法*/ /*Thread thread = new Thread(new Runnable() { @Override public void run() { HttpUrlConnectionGet(); } }); thread.start();*/
/*第二种方法*/ new Thread(new Runnable() { @Override public void run() { HttpUrlConnectionGet(); } }).start(); } }); } public void HttpUrlConnectionGet(){ HttpURLConnection urlConnection = null; InputStream is = null; StringBuilder sb = new StringBuilder(); try { URL url = new URL("http://apis.baidu.com/txapi/tiyu/tiyu?num=10&page=1"); urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.setConnectTimeout(5*1000); urlConnection.setReadTimeout(5*1000); urlConnection.setRequestProperty("apikey","fc642e216cd19906f642ee930ce28174"); urlConnection.connect(); if (urlConnection.getResponseCode() == HttpURLConnection.HTTP_OK){ is = urlConnection.getInputStream(); byte[] bytes = new byte[1024]; int i = 0; while ((i = is.read(bytes)) != -1){ sb.append(new String(bytes,0,i,"utf-8")); } is.close(); } } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }finally { if (urlConnection != null){ urlConnection.disconnect(); } } Message message = handler.obtainMessage(1,sb.toString()); handler.sendMessage(message); } private Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { super.handleMessage(msg); if (msg != null && msg.what == 1){ String s = (String) msg.obj; webView.getSettings().setDefaultTextEncodingName("utf-8"); webView.getSettings().setJavaScriptEnabled(true); webView.loadDataWithBaseURL(null,s,"text/html","utf-8",null); } } };}