标签：apach query 下一步 释放 pair pen puts 风格 nbsp
httclient 正常流程
1、创建httpclient实例
HttpClient httpClient = new DefaultHttpClient(); CloseableHttpClient httpclient = HttpClients.createDefault();
2、创建请求实例
HttpGet httpGet = new HttpGet(url); HttpPost httpPost = new HttpPost(url);
3、补充头信息(可选)
httpPost.addHeader("Referer", "http://iservice.10010.com/e4/query/basic/history_list.html");
httpPost.addHeader(" Cookie ", " td_cookie=18446744072103645798; mallcity=31|310; ");
4、补充请求实体
1)url是restful风格，已经包含需要传入的参数。可以跳过直接到下一步操作。
url="https://ssoqa.99bill.com/sso/login/smsvalidate.htm?method=loginErrorCount&idContent=1234567"
2)表单
List<NameValuePair> nvps = new ArrayList<NameValuePair>(); nvps.add(new BasicNameValuePair("querytype", "0001")); nvps.add(new BasicNameValuePair("querycode", "0001")); nvps.add(new BasicNameValuePair("billdate", "201608")); nvps.add(new BasicNameValuePair("flag", "2")); httpPost.setEntity(new UrlEncodedFormEntity(nvps));
5、请求执行
HttpResponse response = httpClient.execute(httpGet); CloseableHttpResponse response = httpclient.execute(httpGet); byte[] response = httpClient.execute(httpGet,handler);
6、读取响应内容
if (response.getStatusLine().getStatusCode() == 200) { HttpEntity entity = response.getEntity(); if (entity != null) { InputStream instream = entity.getContent(); try { // do something useful } finally { instream.close(); } } }
7、释放连接
response.close();
需要引用的jar
<!-- httpclient -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.3.4</version>
</dependency>
<!-- httpclient -->
标签：apach query 下一步 释放 pair pen puts 风格 nbsp
原文地址：http://www.cnblogs.com/applemoon/p/6399653.html
