目录一、什么是RestTemplate?二、四种请求方式2.1 GET请求2.2 POST请求2.3 PUT请求2.4 DELETE请求
一、什么是RestTemplate?
RestTemplate 是一个HTTP客户端,在Spring Cloud的服务调用方使用它我们可以方便的调用HTTP接口,支持GET、POST、PUT、DELETE等方法。
二、四种请求方式
首先注入Bean对象
@Configurationpublic class MyConfig { @Bean public RestTemplate restTemplate(){ return new RestTemplate(); }}
2.1 GET请求 getForObject
@GetMapping("get/{id}")public CommonResult getUser(@PathVariable Long id) { CommonResult commonResult = restTemplate.getForObject(Url + "/user/{1}", CommonResult.class, id); return commonResult}
getForEntity
@GetMapping("/get/{sex}")public CommonResult getUser(@PathVariable String sex) { ResponseEntity<CommonResult> entity = restTemplate.getForEntity(Url + "/user/{女}", CommonResult.class, sex); if (entity.getStatusCode().is2xxSuccessful()) { return entity.getBody(); } else { return new CommonResult("操作失败", 500); }}
2.2 POST请求 postForObject
@PostMapping("/add")public CommonResult add(@RequestBody User user) { CommonResult commonResult = restTemplate.postForObject(Url + "/user/add", user, CommonResult.class); return commonResult;}
postForEntity
@PostMapping("/add")public CommonResult add(@RequestBody User user) { CommonResult commonResult = restTemplate.postForEntity(Url + "/user/add", user, CommonResult.class) return commonResult.getBody();}
2.3 PUT请求
@PutMapping("/update")public CommonResult update(@RequestBody User user) { restTemplate.put(Url + "/user/update", user); return new CommonResult("操作成功",200);}
2.4 DELETE请求
@DeleteMapping("/delete/{id}")public CommonResult delete(@PathVariable Long id) { restTemplate.delete(Url + "/user/delete/" + id, null); return new CommonResult("操作成功",200);}
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