Java学习心得之 HttpClient的GET和POST请求

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作者：枫雪庭

出处：http://www.cnblogs.com/FengXueTing-px/

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Java学习心得之 HttpClient的GET和POST请求

1. 前言
2. GET请求
3. POST请求

一、前言

本篇博文记录了HttpClient的GET和POST请求

本文内容基于以下文章：

http://huangqiqing123.iteye.com/blog/2054436 (HttpClient之 addHeader与setHeader)
http://zywang.iteye.com/blog/916834 (使用Apache HttpClient访问JSP发送GET和POST请求)
http://www.linuxidc.com/Linux/2012-02/55502p3.htm (HttpClient 4.0的使用详解)

二、GET请求

GET请求的实例如下：

//httpClient
HttpClient httpClient = new DefaultHttpClient(); // get method
HttpGet httpGet = new HttpGet("https://api.microsofthealth.net/v1/me/Summaries/Daily"); // set header
String Au="Bearer "+access_token;
httpGet.setHeader("Authorization",Au); //response
HttpResponse response = null;
try{
response = httpClient.execute(httpGet);
}catch (Exception e) {} //get response into String
String temp="";
try{
HttpEntity entity = response.getEntity();
temp=EntityUtils.toString(entity,"UTF-8");
}catch (Exception e) {} return temp;

三、POST请求：

GET请求的实例如下：

//httpClient
HttpClient httpClient = new DefaultHttpClient(); // get method
HttpPost httpPost = new HttpPost("https://login.live.com/oauth20_token.srf"); // set header
httpPost.setHeader("Content-Type","application/x-www-form-urlencoded"); //set params
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("client_id",client_id));
params.add(new BasicNameValuePair("redirect_uri",redirect_uri));
params.add(new BasicNameValuePair("client_secret",client_secret));
params.add(new BasicNameValuePair("code",code));
params.add(new BasicNameValuePair("grant_type","authorization_code"));
try{
httpPost.setEntity(new UrlEncodedFormEntity(params));
}catch (Exception e) {} //response
HttpResponse response = null;
try{
response = httpClient.execute(httpPost);
}catch (Exception e) {} //get response into String
String temp="";
try{
HttpEntity entity = response.getEntity();
temp=EntityUtils.toString(entity,"UTF-8");
}catch (Exception e) {} return temp;