接口解析类

分享两个常用的接口解析方法。

1、使用URLConnection

 public static String getResult(String url){
		 String result="";//访问返回结果
		 BufferedReader read=null;//读取访问结果
		 try {
			 //创建url
			 URL realurl=new URL(url);
			 URLConnection connection=realurl.openConnection();
			 connection.setRequestProperty("accept", "*/*");
			 connection.setRequestProperty("connection", "Keep-Alive");
			 //火狐？
			 connection.setRequestProperty("user-agent",
					 "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			 connection.connect();
			 Map<String, List<String>> map = connection.getHeaderFields();
			 read = new BufferedReader(new InputStreamReader(
					 connection.getInputStream(),"UTF-8"));
			 String line;//循环读取
			 while ((line = read.readLine()) != null) {
				 result += line;
			 }
		 } catch (IOException e) {
			 e.printStackTrace();
		 }finally{
			 if(read!=null){//关闭流
				 try {
					 read.close();
				 } catch (IOException e) {
					 e.printStackTrace();
				 }
			 }
		 }
		 return  result;
	 }

2、使用RestTemplate 解析（功能强大）

public static void main(String[] args) {

        RestTemplate template = new RestTemplate();
        String url = "http://localhost:18899/jeecg-boot/policeQrCode/policeQrCode/list?policePhone={policePhone}";

        // 封装参数，这里是HashMap
        Map<String, Object> paramMap = new HashMap<String, Object>();
        paramMap.put("policePhone", "12345678912");
    


        //2、使用exchange请求接口
        String token = "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJleHAiOjE2MDY0NTc4NDYsInVzZXJuYW1lIjoiYWRtaW4ifQ.E1zjpFB1qiXCFh2R6UwEtNL5ibNoW-DTcHHczleY__A";
        HttpHeaders headers = new HttpHeaders();
        headers.add("X-Access-Token", token);

        HttpEntity<MultiValueMap<String, Object>> httpEntity = new HttpEntity<MultiValueMap<String, Object>>(null,headers);
        ResponseEntity<String> response2 = template.exchange(url, HttpMethod.GET, httpEntity, String.class,paramMap);
        System.out.println("result====================" + response2.getBody());
    }