HttpClient常用方法总结

1、HttpPost发送表单请求

  String url = "";
  HttpPost httpPost = new HttpPost(url);
  List<NameValuePair> params = new ArrayList<>();
  params.add(new BasicNameValuePair("username", "root"));
  params.add(new BasicNameValuePair("password", "123456"));
  UrlEncodedFormEntity uefEntity = new UrlEncodedFormEntity(params, "utf-8");
  httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
  httpPost.setEntity(uefEntity);

2、HttpPost发送json参数请求

 String url = "";
 String json = ""; // 请求参数，json格式
 HttpPost httpPost = new HttpPost(url);
 StringEntity entity = new StringEntity(json, "UTF-8");
 httpPost.setHeader("Content-Type", "application/json");
 httpPost.setEntity(entity);

3、HttpPost发送xml参数请求

 String url = "";
 String xml = ""; // 请求参数，xml格式
 HttpPost httpPost = new HttpPost(url);
 StringEntity entity = new StringEntity(xml, "UTF-8");
 httpPost.setHeader("Content-Type", "text/xml");
 httpPost.setEntity(entity);