Question

在GET，POST，PUT，DELETE请求之后我应该返回什么（JSON格式）？

我看到了几个变种。例如： 1）GET：

@RequestMapping(value = "/user/{id}", method = RequestMethod.GET,
        headers = "Accept=application/json")
public Shop getShopById(@PathVariable long id) {
    return mainService.getShopById(id);
}

2）GET：

@RequestMapping(value = "/user/{id}", method = RequestMethod.GET,
        headers = "Accept=application/json")
public ResponseEntity<Shop> getShopById(@PathVariable long id) {
    Shop shop = mainService.getShopById(id);

    if (shop == null) {
        return new ResponseEntity<Shop>(HttpStatus.NOT_FOUND);
    }
    return new ResponseEntity<Shop>(shop, HttpStatus.OK);
}

1）POST：

@RequestMapping(value="/users", method = RequestMethod.POST)
public User addShop(@RequestBody User user) {
    mainService.addShop(user);
    return user;enter code here
}

2）POST：

@RequestMapping(value="/users", method = RequestMethod.POST)
public User addShop(@RequestBody User user) {
    mainService.addShop(user);

    HttpHeaders headers = new HttpHeaders(); headers.setLocation(ucBuilder.path("/users").buildAndExpand(user.getId()).toUri());
    return new ResponseEntity<Void>(headers, HttpStatus.CREATED);
}

那么返回响应的正确方法是什么？它应该只是User或ResponseEntity的对象吗？关于PUT和DELETE方法的相同问题。

Answer 1

您可能需要查看HATEOAS。

Answer 2

据我所知，这取决于你想要返回的HttpStatus（响应代码）。我总是返回ResponseEntity≤？＆gt;因为它允许指定HttpStatus，这对REST很重要。

（您还应该指定@ResponseBody并生成= MediaType.APPLICATION_JSON_VALUE）

RESTfull Web服务的正确响应

2 个答案: