1、maven引入

     
     
      org.apache.httpcomponents
      
     
      httpclient
      
     
      4.5
      
     
     
     
      org.apache.httpcomponents
      
     
      httpcore
      
     
      4.4.4
      
     
     
     
      org.apache.httpcomponents
      
     
      httpmime
      
     
      4.5
      
     2、封装post请求方法 public static String httpPost(String url,Map map){ // 返回body String body = null; // 获取连接客户端工具 CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpResponse httpResponse=null; // 2、创建一个HttpPost请求 HttpPost post = new HttpPost(url); // 5、设置header信息

　　　/**header中通用属性*/ 　　　　post.setHeader("Accept","*/*"); 　　　　post.setHeader("Accept-Encoding","gzip, deflate"); 　　　　post.setHeader("Cache-Control","no-cache"); 　　　　post.setHeader("Connection", "keep-alive"); 　　　　post.setHeader("Content-Type", "application/json;charset=UTF-8"); 　　　　/**业务参数*/ 　　　　post.setHeader("test1","test1"); 　　　　post.setHeader("test2",2); 　　

// 设置参数 if (map != null) { //System.out.println(JSON.toJSONString(map)); try { StringEntity entity1=new StringEntity(JSON.toJSONString(map),"UTF-8"); entity1.setContentEncoding("UTF-8"); entity1.setContentType("application/json"); post.setEntity(entity1); // 7、执行post请求操作，并拿到结果 httpResponse = httpClient.execute(post); // 获取结果实体 HttpEntity entity = httpResponse.getEntity(); if (entity != null) { // 按指定编码转换结果实体为String类型 body = EntityUtils.toString(entity, "UTF-8"); } try { httpResponse.close(); httpClient.close(); } catch (IOException e) { e.printStackTrace(); } } catch (Exception e) { e.printStackTrace(); } } return body; } 3、封装GET请求方法

public static String httpGet(String url){
   // 获取连接客户端工具     CloseableHttpClient httpClient = HttpClients.createDefault();     CloseableHttpResponse httpResponse=null;     String finalString = null; HttpGet httpGet = new HttpGet(url); /**公共参数添加至httpGet*/

/**header中通用属性*/ 　　　　httpGet.setHeader("Accept","*/*"); 　　　　httpGet.setHeader("Accept-Encoding","gzip, deflate"); 　　　　httpGet.setHeader("Cache-Control","no-cache"); 　　　　httpGet.setHeader("Connection", "keep-alive"); 　　　　httpGet.setHeader("Content-Type", "application/json;charset=UTF-8"); 　　　　/**业务参数*/