我的HttpClients工具

 import java.io.IOException;

 import javax.ws.rs.core.MediaType;

 import org.apache.commons.httpclient.HttpClient;

 import org.apache.commons.httpclient.HttpException;

 import org.apache.commons.httpclient.HttpStatus;

 import org.apache.commons.httpclient.methods.GetMethod;

 import org.apache.commons.httpclient.methods.PostMethod;

 import org.apache.commons.httpclient.methods.PutMethod;

 import org.apache.commons.httpclient.methods.RequestEntity;

 import org.apache.commons.httpclient.methods.StringRequestEntity;

 /**

  *

  * @author Administrator

  *

  */

 public class RestClientUtils {

     /**

      * 发送POST请求

      * @param url

      * @param object

      */

     public static String post(String uri, Object content) {

         String sendContent = content.toString();

         String result = null;

         PostMethod postMethod = null;

         HttpClient httpClient = null;

         try {

             postMethod = new PostMethod(uri);

             httpClient = new HttpClient();

             RequestEntity entity = new StringRequestEntity(sendContent,

                     MediaType.APPLICATION_JSON + ";charset=UTF-8", null);//解决中文乱码问题的方法

             postMethod.addRequestHeader("Accept", MediaType.APPLICATION_JSON

                     + ";charset=UTF-8");

             postMethod.setRequestEntity(entity);

             int statusCode = httpClient.executeMethod(postMethod);

             //如果相应成功

             if (statusCode != HttpStatus.SC_OK) {

                 System.err.println(" Method failed:  "

                         + postMethod.getStatusLine());

                 return "failed";

             }

             byte[] responseBody = postMethod.getResponseBody();

             result = new String(responseBody, "utf-8");

             System.err.println("===================发送POST格式数据请求==================");

             System.err.println("返回状态："+statusCode);

             System.err.println("返回结果:");

             System.err.println(result);

             System.err.println("==============================================");

         } catch (HttpException e) {

             e.printStackTrace();

         } catch (IOException e) {

             e.printStackTrace();

         } finally {

             // 释放连接

             if (postMethod != null) {

                 postMethod.releaseConnection();

             }

         }

         return result;

     }

     /**

      * 发送GET请求

      * @return

      */

     public static String get(String uri) {

         HttpClient httpclient = new HttpClient();

         GetMethod getMethod = new GetMethod(uri);

         String result = "";

         int statusCode = 0;

         try {

             statusCode = httpclient.executeMethod(getMethod);

             result = getMethod.getResponseBodyAsString();

             System.err.println("===================发送GET请求==================");

             System.err.println("返回状态："+statusCode);

             System.err.println("返回结果:");

             System.err.println(result);

             System.err.println("==============================================");

         } catch (IOException e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         } finally {

             // 释放连接

             if (getMethod != null) {

                 getMethod.releaseConnection();

             }

         }

         return result;

     }

     /**

      * 发送PUT请求

      * @param uri

      * @param content

      * @return

      */

     public static String put(String uri, Object content) {

         String sendContent = content.toString();

         HttpClient httpclient = new HttpClient();

         PutMethod putMethod = new PutMethod(uri);

         String result = "";

         try {

             RequestEntity entity = new StringRequestEntity(sendContent,

                     MediaType.APPLICATION_JSON + ";charset=UTF-8", null);//解决中文乱码问题的方法

             putMethod.addRequestHeader("Accept", MediaType.APPLICATION_JSON

                     + ";charset=UTF-8");

             putMethod.setRequestEntity(entity);

             int statusCode = httpclient.executeMethod(putMethod);

             byte[] responseBody = putMethod.getResponseBody();

             result = new String(responseBody, "utf-8");

             System.err.println("===================发送PUT请求==================");

             System.err.println("返回状态："+statusCode);

             System.err.println("返回结果:");

             System.err.println(result);

             System.err.println("==============================================");

         } catch (Exception e) {

             e.printStackTrace();

         } finally {

             // 释放连接

             if (null != putMethod) {

                 putMethod.releaseConnection();

             }

         }

         return result;

     }

 }