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;
     }
 }