异步http框架（get）（无服务器）

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    <uses-permission android:name="android.permission.INTERNET"/>

<Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:onClick="click"        android:text="发送http请求" />

StreamTools

package org.gentry.asynchttp.utils;import java.io.ByteArrayOutputStream;import java.io.InputStream;public class StreamTools {/** * 把输入流的内容转化成字符串 *  * @param is * @return */public static String readInputStream(InputStream is) {try {ByteArrayOutputStream baos = new ByteArrayOutputStream();int len = 0;byte[] buffer = new byte[1024];while ((len = is.read(buffer)) != -1) {baos.write(buffer, 0, len);}is.close();byte[] result = baos.toByteArray();// 试着解析result里面的字符串String temp = new String(result);// 处理字符乱码问题if (temp.contains("UTF-8")) {return temp;} else if (temp.contains("gb2312")) {return new String(result, "gb2312");}return temp;} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();return "获取失败";}}}

MyHandler

package org.gentry.asynchttp;import android.os.Handler;import android.os.Message;public class MyHandler extends Handler {public void onFailure(String content) {}public void onSuccess(String content) {}@Overridepublic void handleMessage(Message msg) {String content = (String) msg.obj;switch (msg.what) {case 1:onSuccess(content);break;case 2:onFailure(content);break;}}}

AsyncHttpClient

package org.gentry.asynchttp;import java.io.InputStream;import org.apache.http.HttpResponse;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.gentry.asynchttp.utils.StreamTools;import android.os.Message;public class AsyncHttpClient {public void get(final String path, final MyHandler myHandler) {new Thread() {public void run() {HttpClient client = new DefaultHttpClient();HttpGet httpGet = new HttpGet(path);try {HttpResponse response = client.execute(httpGet);InputStream is = response.getEntity().getContent();String content = StreamTools.readInputStream(is);// 执行成功Message msg = new Message();msg.what = 1;msg.obj = content;myHandler.sendMessage(msg);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();// 执行失败Message msg = new Message();msg.what = 2;msg.obj = "请求失败";myHandler.sendMessage(msg);}};}.start();}}

MainActivity

package org.gentry.asynchttp;import java.net.URLEncoder;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.Toast;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}public void click(View view) {// 1. 开启子线程，执行一个http请求，在后台执行，在子线程执行// 2. 子线程执行完毕后，通知UI界面更新AsyncHttpClient client = new AsyncHttpClient();String path = "http://192.168.1.100:8080/web/LoginServlet?username="+ URLEncoder.encode("zhangsan") + "&password="+ URLEncoder.encode("123");client.get(path, new MyHandler() {@Overridepublic void onFailure(String content) {Toast.makeText(MainActivity.this, content, Toast.LENGTH_SHORT).show();super.onFailure(content);}@Overridepublic void onSuccess(String content) {Toast.makeText(MainActivity.this, content, Toast.LENGTH_SHORT).show();super.onSuccess(content);}});}}

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