用httpclient-3.1 的android網絡通信

package cn.project.app.http;import java.io.FileNotFoundException;import java.net.SocketTimeoutException;import java.net.UnknownHostException;import java.util.Iterator;import java.util.Map;import org.apache.commons.httpclient.HttpClient;import org.apache.commons.httpclient.methods.ByteArrayRequestEntity;import org.apache.commons.httpclient.methods.GetMethod;import org.apache.commons.httpclient.methods.PostMethod;import org.apache.commons.httpclient.params.HttpMethodParams;import org.json.JSONObject;import android.util.Log;import com.google.gson.Gson;import cn.uninor.app.bean.ErrorBean;import cn.uninor.app.service.ErrorCodeService;import cn.uninor.app.util.MyFileOut;public class MyApachHttp {public static JSONObject getHttpJSONObject(String url){JSONObject object = null;String result = getHttpJson(url);try {if(result != null){object = new JSONObject(result);}} catch (Exception e) {e.printStackTrace();}    return object;}public static JSONObject getHttpJSONObject(String url,String json){JSONObject object = null;String result = getHttpJson(url,json);try {if(result != null){object = new JSONObject(result);}} catch (Exception e) {e.printStackTrace();}return object;}public static String getHttpJson(String url){//For GetString response = null;HttpClient client = new HttpClient();GetMethod getMethod =new GetMethod(url);try {getMethod.setRequestHeader("Content-Type", "application/json; charset=utf-8");getMethod.getParams().setContentCharset("utf-8");getMethod.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, 1000*10);client.executeMethod(getMethod);int response_status = getMethod.getStatusCode();if(response_status == 200){ErrorCodeService.setStatusCode(200);response = getMethod.getResponseBodyAsString();}else if(response_status == 400){Gson gson = new Gson();String error = getMethod.getResponseBodyAsString();ErrorBean errorBean = gson.fromJson(error, ErrorBean.class);ErrorCodeService.setStatusCode(400);ErrorCodeService.setErrorBean(errorBean);}}catch(SocketTimeoutException ste){ErrorCodeService.setStatusCode(100);//超時異常ste.printStackTrace();Log.i("size","SocketTimeoutException");}catch (UnknownHostException ukhe) {// TODO: handle exceptionErrorCodeService.setStatusCode(101);//主機不好可達異常ukhe.printStackTrace();Log.i("size","UnknownHostException");}catch (FileNotFoundException fe) {//路徑不可用異常// TODO: handle exceptionErrorCodeService.setStatusCode(102);fe.printStackTrace();Log.i("size","FileNotFoundException");}catch (Exception e) {ErrorCodeService.setStatusCode(103);e.printStackTrace();Log.i("size","Exception");}finally{getMethod.releaseConnection();//釋放鏈接}return response;}/** * For Post * @param url * @param map * @return */public static String getHttpJson(String url,String json){String response = null;HttpClient client = new HttpClient();;PostMethod postMethod = new PostMethod(url);try {postMethod.setRequestHeader("Content-Type", "application/json; charset=utf-8");postMethod.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, 1000*10);ByteArrayRequestEntity entity = new ByteArrayRequestEntity(json.getBytes(), "UTF-8");postMethod.setRequestEntity(entity);client.executeMethod(postMethod);int status_code = postMethod.getStatusLine().getStatusCode();if(status_code == 200){ErrorCodeService.setStatusCode(200);response = postMethod.getResponseBodyAsString();}else if(status_code == 400){String error = postMethod.getResponseBodyAsString();Gson gson = new Gson();ErrorBean errorBean = gson.fromJson(error, ErrorBean.class);ErrorCodeService.setStatusCode(400);ErrorCodeService.setErrorBean(errorBean);MyFileOut.writeOutputStrem(error);}}catch (SocketTimeoutException ste) {ErrorCodeService.setStatusCode(100);ste.printStackTrace();Log.i("size","SocketTimeoutException");}catch (UnknownHostException ukhe) {// TODO: handle exceptionErrorCodeService.setStatusCode(101);ukhe.printStackTrace();Log.i("size","UnknownHostException");}catch (FileNotFoundException fe) {ErrorCodeService.setStatusCode(102);fe.printStackTrace();Log.i("size","FileNotFoundException");}catch (Exception e) {ErrorCodeService.setStatusCode(103);e.printStackTrace();Log.i("size","Exception");}finally{postMethod.releaseConnection();}return response;}public static StringBuffer map2StringBuffer(Map<String, Object> params) {StringBuffer buf = new StringBuffer("");if (params != null && params.size() > 0) {Iterator<Map.Entry<String, Object>> it = params.entrySet().iterator();while (it.hasNext()) {Map.Entry<String, Object> entry = it.next();buf.append(entry.getKey()).append("=").append(entry.getValue()).toString();buf.append("&");}}if (buf.length() > 1)buf.deleteCharAt(buf.length() - 1);return buf;}}

用Httpclient-3.1來網絡通信 

工具包下載：http://download.csdn.net/detail/wfung_kwok/4134264

新浪微博就是這樣個包來進行網絡通信的，個人在做項目過程中，用android自帶的網絡通信不知道為什么，會出現亂碼，我寫的這個APP是繁體的，數據接口來自.net。所出現的亂碼不是全部亂碼，而是個別亂碼，后來就用第三方的包來進行網絡通信，發現問題解決了。

上面的這個類是本人寫的，大家可以直接拿來用

要注意的是

a.上面post方法的數據是json的。post的數據也不是key-value（a=b&b=c）,而是直接把{"a":"b","b":"c"}post上去。

如果要post key=valus的話，用

NameValuePair[] pb = new NameValuePair[3];
pb[1] = new NameValuePair("a", "b");
postMethod.setRequestBody(pb);

b.上面get方法的話，這里不做解釋了！