Spring RestTemplate 之exchange方法

Spring RestTemplate 之exchange方法

●exchange方法提供统一的方法模板进行四种请求：POST,PUT,DELETE,GET

(1)POST请求

String reqJsonStr = "{\"code\":\"testCode\", \"group\":\"testGroup\",\"content\":\"testContent\", \"order\":1}";
HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.APPLICATION_JSON);
HttpEntity<String> entity = new HttpEntity<String>(reqJsonStr,headers);
ResponseEntity<Map> resp = restTemplate.exchange(DIC_DATA_URL, HttpMethod.POST, entity, Map.class);
(2)PUT请求

复制代码
String reqJsonStr = "{\"id\":227,\"code\":\"updateCC\", \"group\":\"UPDATE\",\"content\":\"updateCT\", \"order\":9}";
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
HttpEntity<String> entity = new HttpEntity<String>(reqJsonStr,headers);
ResponseEntity<Map> resp = restTemplate.exchange(DIC_DATA_URL, HttpMethod.PUT, entity, Map.class);
复制代码
(3)DELETE请求

ResponseEntity<Map> resp = restTemplate.exchange(DIC_DATA_URL + "?id={id}", HttpMethod.DELETE, null, Map.class, 227);
(4)GET请求

ResponseEntity<String> results = restTemplate.exchange(url,HttpMethod.GET, null, String.class, params);
说明：1）url: 请求地址；
     2）method: 请求类型(如：POST,PUT,DELETE,GET)；
     3）requestEntity: 请求实体，封装请求头，请求内容
     4）responseType: 响应类型，根据服务接口的返回类型决定
     5）uriVariables: url中参数变量值




https://www.cnblogs.com/jnba/p/10522608.html



Demo

@SuppressWarnings("all")
    public String sendPost(String url,Object param){
        String jsonParam = JSON.toJSONString(param);
        String accessToken = getAccessToken(jsonParam);
        HttpHeaders requestHeaders = new HttpHeaders();
        requestHeaders.add("kye", kye);
        requestHeaders.add("Content-Type", "application/json;charset=UTF-8");
        requestHeaders.add("access-token", accessToken);
        HttpEntity<String> requestEntity = new HttpEntity<String>(jsonParam, requestHeaders);
        ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.POST, requestEntity, String.class);
        String result = response.getBody();
        return result;


    }