apache httpclient 使用

commons-logging.jar  还有 commons-codec.jar 这两个包没有就报错咯

用的httpclient 4.0 beta2

 

package com.testhttpclient;

import java.io.IOException;
import java.util.ArrayList;
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.client.params.ClientPNames;
import org.apache.http.client.params.CookiePolicy;
//import org.apache.http.client.params.HttpClientParams;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;

public class MainTest {
    public static void main(String[] args) {
        String url ="";
        HttpClient httpClient=new DefaultHttpClient();
        //httpClient.getParams().setParameter(HttpClientParams.COOKIE_POLICY,CookiePolicy.BROWSER_COMPATIBILITY);
        httpClient.getParams().setParameter(ClientPNames.COOKIE_POLICY,CookiePolicy.BROWSER_COMPATIBILITY);
        
        //get 方式
        HttpGet httpget = new HttpGet(url);
        httpget.setHeader("Accept-Language","zh-cn");//   等等
        try{
            HttpResponse response = httpClient.execute(httpget);
            HttpEntity entity = response.getEntity();
            String webcode = new String(EntityUtils.toString(response.getEntity()).getBytes("ISO-8859-1"),"UTF-8");//具体情况具体分析
            if(entity!=null){
                try{
                    entity.consumeContent();
                }catch(IOException e){
                    e.printStackTrace();
                }
            }
        }catch(Exception ex){
            ex.printStackTrace();
        }

        //post方式
        HttpPost httppost = new HttpPost(url);
        httppost.setHeader("","");
        
//        NameValuePair[] nvps = new NameValuePair[] {
//                new BasicNameValuePair("", ""),
//                new BasicNameValuePair("", "") // 
//        };
//        httppost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));
        List<NameValuePair> parameters = new ArrayList<NameValuePair>();
        parameters.add(new BasicNameValuePair("", ""));// 
        
        try{
            httppost.setEntity(new UrlEncodedFormEntity(parameters, HTTP.UTF_8));
            HttpResponse response = httpClient.execute(httppost);
            HttpEntity entity = response.getEntity();
            String webcode = EntityUtils.toString(response.getEntity());
            if(entity!=null){
                try{
                    entity.consumeContent();
                }catch(IOException e){
                    e.printStackTrace();
                }
            }
        }catch(Exception ex){
            ex.printStackTrace();
        }
    }
}