我的 PathVariables 不起作用

Question

您好，我想用 Spring Rest 编写一个 Get 方法，但我的代码不起作用，代码如下；@RequestMapping(value = "userRight/hasRightForOperation", method = RequestMethod.GET, consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)    public ResponseEntity<?> hasRightForOperation(@PathVariable(value = "loginName") String loginName,            @PathVariable(value = "vendorId") String vendorId,            @PathVariable(value = "accessRightCode") String accessRightCode) {        return new ResponseEntity<>(hasRightForOperation(loginName, vendorId, accessRightCode), HttpStatus.OK);先感谢您

Answer 1

@RequestMapping(value = "userRight/hasRightForOperation", method = RequestMethod.GET, consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)

public ResponseEntity<?> hasRightForOperation(@PathVariable(value = "loginName") String loginName,

        @PathVariable(value = "vendorId") String vendorId,

        @PathVariable(value = "accessRightCode") String accessRightCode) {

    return new ResponseEntity<>(hasRightForOperation(loginName, vendorId, accessRightCode), HttpStatus.OK);

您正在使用 @PathVariable 但您的 url 映射没有参数。你可以修复像

@RequestMapping(value = "userRight/hasRightForOperation/{loginName}/{vendorId}/{accessRightCode}", method = RequestMethod.GET, consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)

public ResponseEntity<?> hasRightForOperation(@PathVariable(value = "loginName") String loginName,

        @PathVariable(value = "vendorId") String vendorId,

        @PathVariable(value = "accessRightCode") String accessRightCode) {

    return new ResponseEntity<>(hasRightForOperation(loginName, vendorId, accessRightCode), HttpStatus.OK);

您可以更改 url 映射参数的顺序。因此，如果您不想使用 url 映射，则可以使用 @RequestParam 标签获取参数。

@GetMapping(value = "userRight/hasRightForOperation", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)

public ResponseEntity<?> hasRightForOperation(@RequestParam("loginName") String loginName,

                                              @RequestParam("vendorId") String vendorId,

                                              @RequestParam("accessRightCode") String accessRightCode) {

    return new ResponseEntity<>(hasRightForOperation(loginName, vendorId, accessRightCode), HttpStatus.OK);

}

Answer 2

您必须在 URL 中接收路径变量，以便添加如下所有参数。

改变

@RequestMapping(value = "userRight/hasRightForOperation", method = RequestMethod.GET, consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)

到

@RequestMapping(value = "userRight/hasRightForOperation/{loginName}/{vendorId}/{accessRightCode}", method = RequestMethod.GET, consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)

我会推荐你使用@RequestParam这个。