HttpClient Java模拟Http请求

HttpClient Get POST
[图片] 需要导入的jar包
commons-logging.jar httpcore-4.0.1.jar httpclient-4.0.3.jar

[代码] HttpClient4使用

001 package main;

002

003 import java.io.IOException;

004 import java.io.UnsupportedEncodingException;

005 import java.net.URI;

006 import java.net.URISyntaxException;

007 import java.util.ArrayList;

008 import java.util.List;

009

010 import org.apache.http.HttpEntity;

011 import org.apache.http.HttpResponse;

012 import org.apache.http.NameValuePair;

013 import org.apache.http.ParseException;

014 import org.apache.http.client.ClientProtocolException;

015 import org.apache.http.client.HttpClient;

016 import org.apache.http.client.entity.UrlEncodedFormEntity;

017 import org.apache.http.client.methods.HttpGet;

018 import org.apache.http.client.methods.HttpPost;

019 import org.apache.http.impl.client.DefaultHttpClient;

020 import org.apache.http.message.BasicNameValuePair;

021 import org.apache.http.util.EntityUtils;

022

023 public class Main {

024

025 private static HttpClient hc = new DefaultHttpClient();

026

027 /**

028 * @param args

029 */

030 public static void main(String[] args) {

031 List<NameValuePair> params = new ArrayList<NameValuePair>();

032 params.add(new BasicNameValuePair("email", "xxx@gmail.com"));

033 params.add(new BasicNameValuePair("pwd", "xxx"));

034 params.add(new BasicNameValuePair("save_login", "1"));

035

036 String url = "http://www.oschina.net/action/user/login";

037

038 String body = post(url, params);

039 System.out.println(body);

040 }

041

042 /**

043 * Get请求

044 * @param url

045 * @param params

046 * @return

047 */

048 public static String get(String url, List<NameValuePair> params) {

049 String body = null;

050 try {

051 // Get请求

052 HttpGet httpget = new HttpGet(url);

053 // 设置参数

054 String str = EntityUtils.toString(new UrlEncodedFormEntity(params));

055 httpget.setURI(new URI(httpget.getURI().toString() + "?" + str));

056 // 发送请求

057 HttpResponse httpresponse = hc.execute(httpget);

058 // 获取返回数据

059 HttpEntity entity = httpresponse.getEntity();

060 body = EntityUtils.toString(entity);

061 if (entity != null) {

062 entity.consumeContent();

063 }

064 } catch (ParseException e) {

065 e.printStackTrace();

066 } catch (UnsupportedEncodingException e) {

067 e.printStackTrace();

068 } catch (IOException e) {

069 e.printStackTrace();

070 } catch (URISyntaxException e) {

071 e.printStackTrace();

072 }

073 return body;

074 }

075

076 /**

077 * // Post请求

078 * @param url

079 * @param params

080 * @return

081 */

082 public static String post(String url, List<NameValuePair> params) {

083 String body = null;

084 try {

085 // Post请求

086 HttpPost httppost = new HttpPost(url);

087 // 设置参数

088 httppost.setEntity(new UrlEncodedFormEntity(params));

089 // 发送请求

090 HttpResponse httpresponse = hc.execute(httppost);

091 // 获取返回数据

092 HttpEntity entity = httpresponse.getEntity();

093 body = EntityUtils.toString(entity);

094 if (entity != null) {

095 entity.consumeContent();

096 }

097 } catch (UnsupportedEncodingException e) {

098 e.printStackTrace();

099 } catch (ClientProtocolException e) {

100 e.printStackTrace();

101 } catch (ParseException e) {

102 e.printStackTrace();

103 } catch (IOException e) {

104 e.printStackTrace();

105 }

106 return body;

107 }

108

http://www.oschina.net/code/snippet_54371_1515

http://openmind.iteye.com/blog/1329720