Android封装Http请求

HttplClientUtils.java

package com.mps.android.commons;import java.util.List;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.NameValuePair;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.params.HttpConnectionParams;import org.apache.http.protocol.HTTP;import org.apache.http.util.EntityUtils;import android.R.integer;import android.os.Handler;import android.os.Message;import android.util.Log;public class HttpClientUtils implements Runnable {public static final String TAG = "mps";//用于区分Handler里的类型public static final int DO_START = 0 ;public static final int DO_ERROR = 1 ;public static final int DO_SUCCEED = 2;//method类型public static final int GET = 0;public static final int POST = 1;/** * 请求地址 */private String url ;/** * 请求类型 */private int method;private Handler handler;/** *请求参数  */private List<NameValuePair> data;private HttpClient httpClient;/** * 无参构造方法 * 自己new一个handler */public HttpClientUtils(){this(new Handler());}/** * 构造方法 * @param _handler */public HttpClientUtils(Handler _handler){handler = _handler;}/** * 创建一个线程去请求服务器数据 * @param method 请求类型 * @param url 请求地址 * @param data 请求参数 */public void createRunnable(int method,String url,List<NameValuePair> data){Log.d(TAG, "method:"+method+" ,url:"+url+" ,data:"+data);  this.method = method;       this.url = url;       this.data = data;     HttpClientManager.getInstance().pushRunnale(this);}public void get(String url) {  createRunnable(GET, url, null);      }        public void post(String url, List<NameValuePair> data) {      createRunnable(POST, url, data);      }@Overridepublic void run() {//开始执行线程handler.sendMessage(Message.obtain(handler, DO_START));httpClient = new DefaultHttpClient();//设置超时时间HttpConnectionParams.setConnectionTimeout(httpClient.getParams(), 5000);try {HttpResponse response = null ;switch (method) {case GET:HttpGet httpGet = new HttpGet(url);response = httpClient.execute(httpGet);break;case POST:HttpPost httpPost = new HttpPost(url);UrlEncodedFormEntity postEntity = new UrlEncodedFormEntity(data,HTTP.UTF_8);httpPost.setEntity(postEntity);response = httpClient.execute(httpPost);break;}processEntity(response.getEntity());} catch (Exception e) {handler.sendMessage(Message.obtain(handler,DO_ERROR,e));}}private void processEntity(HttpEntity entity) throws Exception{byte[] data = EntityUtils.toByteArray(entity);String result = new String(data);handler.sendMessage(Message.obtain(handler,DO_SUCCEED,result));}}

HttpClientManager.java

package com.mps.android.commons;import java.util.ArrayList;import java.util.List;public class HttpClientManager {public static final int MAX_CLINETS = 5;/** * 正在跑的线程列表 */private List<Runnable> active = new ArrayList<Runnable>();/** * 列队线程列表 */private List<Runnable> queue = new ArrayList<Runnable>();private static HttpClientManager instance;public static HttpClientManager getInstance(){if(instance == null){instance = new HttpClientManager();}return instance;}/** * 添加一个线程到列队中 * @param runnable */public void pushRunnale(Runnable runnable){queue.add(runnable);//如果正在执行的线程数不到最大数，则继续执行if(active.size() < MAX_CLINETS){startNext();}}/** * 执行列队中下一个线程 */public void startNext(){//列队不为空if(!queue.isEmpty()){Runnable next = queue.get(0);queue.remove(0);active.add(next);Thread thread = new Thread(next);thread.run();}}/** * 执行完成，将Runnable从列表中删除，并执行列队中下一个 * @param runnable */public void doRunnableComplete(Runnable runnable){active.remove(runnable);startNext();}}

HttpClientHandler.java

package com.mps.android.commons;import android.app.ProgressDialog;import android.content.Context;import android.os.Handler;import android.os.Message;import android.util.Log;public class HttpClientHandler extends Handler {private Context context ;/** * 对话框 */private ProgressDialog progressDialog;public HttpClientHandler(Context context) {          this.context = context;      }/** * 进程开始执行 */protected void startClient() {progressDialog = ProgressDialog.show(context, "Please Wait...", "processing...", true);Log.d(HttpClientUtils.TAG, "Http connection Start...");}/** * 执行成功 * @param json 返回的json */protected void succeed(String json) {if(progressDialog!=null && progressDialog.isShowing()){              progressDialog.dismiss();          } }public void handleMessage(Message msg) {//判断what类型做出相应操作switch (msg.what) {case HttpClientUtils.DO_START:startClient();break;case HttpClientUtils.DO_SUCCEED:String result = (String)msg.obj;Log.d(HttpClientUtils.TAG, "Http return :"+result);succeed(result);break;case HttpClientUtils.DO_ERROR:if(progressDialog!=null && progressDialog.isShowing()){                  progressDialog.dismiss();              } Exception e = (Exception)msg.obj;e.printStackTrace();Log.e(HttpClientUtils.TAG, "Error:"+e.getMessage());break;}}}

调用

private HttpClientHandler handler = new HttpClientHandler(MainActivity.this){@Overrideprotected void succeed(String json) {// 可重写HttpClientHandler里面的方法super.succeed(json);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);try {HttpClientUtils client = new HttpClientUtils(handler);List<NameValuePair> data = new ArrayList<NameValuePair>();data.add(new BasicNameValuePair("method", "json"));client.post("http://10.3.188.20:9080/cusi/s.do", data);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();System.out.println("Error-->" + e.toString());}}