java httpclient4_HttpClient4使用

r囧r小猫 2022-11-03 11:11 167阅读 0赞

package main;

import java.io.IOException;

import java.io.UnsupportedEncodingException;

import java.net.URI;

import java.net.URISyntaxException;

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.ParseException;

import org.apache.http.client.ClientProtocolException;

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.impl.client.DefaultHttpClient;

import org.apache.http.message.BasicNameValuePair;

import org.apache.http.util.EntityUtils;

public class Main \{

private static HttpClient hc = new DefaultHttpClient();

/\*\*

\* @param args

\*/

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

List params = new ArrayList();

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

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

params.add(new BasicNameValuePair("save\_login", "1"));

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

String body = post(url, params);

System.out.println(body);

/\*\*

\* Get请求

\* @param url

\* @param params

\* @return

\*/

public static String get(String url, List params) \{

String body = null;

try \{

// Get请求

HttpGet httpget = new HttpGet(url);

// 设置参数

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

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

// 发送请求

HttpResponse httpresponse = hc.execute(httpget);

// 获取返回数据

HttpEntity entity = httpresponse.getEntity();

body = EntityUtils.toString(entity);

if (entity != null) \{

entity.consumeContent();

\} catch (ParseException e) \{

e.printStackTrace();

\} catch (UnsupportedEncodingException e) \{

e.printStackTrace();

\} catch (IOException e) \{

e.printStackTrace();

\} catch (URISyntaxException e) \{

e.printStackTrace();

return body;

/\*\*

\* // Post请求

\* @param url

\* @param params

\* @return

\*/

public static String post(String url, List params) \{

String body = null;

try \{

// Post请求

HttpPost httppost = new HttpPost(url);

// 设置参数

httppost.setEntity(new UrlEncodedFormEntity(params));

// 发送请求

HttpResponse httpresponse = hc.execute(httppost);

// 获取返回数据

HttpEntity entity = httpresponse.getEntity();

body = EntityUtils.toString(entity);

if (entity != null) \{

entity.consumeContent();

\} catch (UnsupportedEncodingException e) \{

e.printStackTrace();

\} catch (ClientProtocolException e) \{

e.printStackTrace();

\} catch (ParseException e) \{

e.printStackTrace();

\} catch (IOException e) \{

e.printStackTrace();

return body;

java httpclient4_HttpClient4使用

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