用Resttemple从数据接口中取出数据

用RestTemple是需要对应的配置文件的，这里就不放了

@Autowired
private RestTemplate restTemplate;
public JSONObject handle(String url){
    System.out.println("调用数据接口");
    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_JSON);
    headers.add("Accept", "application/json");//请求头
    headers.add("appId", "6325b8c0548b64716c9091c44b4b0bb3");
    headers.add("userName", "yyzg");
    headers.add("passWord", "000000");
    MultiValueMap<String, Object> map = new LinkedMultiValueMap<String, Object>();
    HttpEntity<MultiValueMap> request = new HttpEntity<MultiValueMap>(map, headers);
    JSONObject response = restTemplate.postForEntity(url, request, JSONObject.class).getBody();
    System.out.println(response);
    return  response;
}

如果要做分页

@Autowired
private RestTemplate restTemplate;
public JSONObject handle(String url,Integer pageIndex,Integer pageSize){
    System.out.println("调用数据接口");
   HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_JSON);
    headers.add("Accept", "application/json");//请求头
    headers.add("appId", "6325b8c0548b64716c9091c44b4b0bb3");
    headers.add("userName", "yyzg");
    headers.add("passWord", "000000");
    JSONObject json=new JSONObject();
    json.put("pageIndex",pageIndex);
    json.put("pageSize",pageSize);
    HttpEntity<String> entity = new HttpEntity<>(JSONObject.toJSONString(json),headers);
    JSONObject response= restTemplate.postForObject(url, entity,JSONObject.class);

    return  response;
}