HttpClient发送get和post请求

且看代码：

import java.io.IOException;
import java.io.UnsupportedEncodingException;

import javax.xml.ws.Response;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.log4j.Logger;


public class HttpUtils_test {

    static Logger log=Logger.getLogger(HttpUtils_test.class);
    public static HttpClient httpClient=null;    
    public static HttpClient getInstance(){        
        if (httpClient==null) {
            httpClient=new HttpClient();
        }        
        return httpClient;        
    }    
    
    public static void disconnect(){
        httpClient=null;        
        }
    
    
    /**
     * 功能：发送post请求，获取返回报文返回值
     * @throws IOException 
     * @throws Exception 
     * @return String 返回的状态码
     * 
     * */
    public static void doPost(String Url,NameValuePair[] data) throws Exception{    
        try {
            HttpClient http=HttpUtils_test.getInstance();
            PostMethod post=new PostMethod(Url);
            post.setRequestBody(data);
            int status=http.executeMethod(post);        
            System.out.println(status);
            //判断重定向
            if(status==HttpStatus.SC_MOVED_PERMANENTLY||status==HttpStatus.SC_TEMPORARY_REDIRECT||status==HttpStatus.SC_SEE_OTHER
                    ||status==HttpStatus.SC_MOVED_TEMPORARILY){
                String locationHeder=post.getResponseHeader("location").getValue();
                if (locationHeder!=null) {
                     log.info("The page was redicted to"+" "+locationHeder);
                      doPost(locationHeder, data);
                  }else{
                      log.info("Location field value is null");
                  }            
            }else{                
                log.info(post.getResponseBodyAsString()); 
            }            
        } catch (UnsupportedEncodingException e) {            
            e.printStackTrace();
        }
    }    
    

    /**
     * 
     * 功能：发送Get请求，会的返回值 
     * @param Url 地址
     * */
    public static void doget(String Url) throws Exception{    
        try {
            GetMethod get=new GetMethod(Url);
            int status=HttpUtils_test.getInstance().executeMethod(get);    
            System.out.println(status);
            //判断重定向
            if(status==HttpStatus.SC_MOVED_PERMANENTLY||status==HttpStatus.SC_TEMPORARY_REDIRECT||status==HttpStatus.SC_SEE_OTHER
                    ||status==HttpStatus.SC_MOVED_TEMPORARILY){
                     String locationHeder=get.getResponseHeader("location").getValue();                 
                    if (locationHeder!=null) {
                        log.info("The page was redicted to"+" "+locationHeder);
                      }
                    log.info("Location field value is null");
            }else{    
                log.info(get.getResponseBodyAsString());             
            }            
        } catch (UnsupportedEncodingException e) {            
            e.printStackTrace();
        }    
    
    }
    
    
    
}