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", "
[email protected]"));
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