java - Spring Rest Controller POST 请求不起作用

Question

我有一个休息 Controller :

@RestController
@RequestMapping("/query")
public class QueryController {

    @Autowired
    private QueryService queryService;

    @RequestMapping(value = "/select", method = RequestMethod.POST)
    public @ResponseBody QueryResultDTO executeQuery(@RequestBody QueryDTO queryDTO) {
        try {
            QueryResultDTO queryResultDTO = queryService.executeQuery("select * from employees");
            queryResultDTO.setSuccessful(true);
            return queryResultDTO;
        } catch (SQLException e) {
            QueryResultDTO queryResultDTO = new QueryResultDTO();
            queryResultDTO.setSuccessful(false);
            queryResultDTO.setErrorMessage(e.getMessage());
            return queryResultDTO;
        }
    }
}

我尝试从 AngularJS Controller 发送 POST 请求:

app.controller("AppCtrl",function($scope,$http) {
    var app = this;

    $scope.execute= function () {
        $http({
            url: '../query/select',
            method: "POST",
            data: { 'message' : $scope.queryText }
        })
            .then(function(response) {
                    $scope.queryResult = response.data;
                    console.log($scope.queryResult);
                    console.log($scope.queryText)
                },
                function(response) {
                    console.log(response);
                });
    }

});

但是它不起作用。我在 Spring Controller 中的 executeQuery 函数甚至没有被调用。

但是当我将 RequestMethod 更改为 GET 时，它可以正常工作。

@RestController
@RequestMapping("/query")
public class QueryController {

    @Autowired
    private QueryService queryService;

    @RequestMapping(value = "/select", method = RequestMethod.GET)
    public @ResponseBody QueryResultDTO executeQuery() {
        try {
            QueryResultDTO queryResultDTO = queryService.executeQuery("INSERT INTO employee VALUES (7,'dupa')");
            queryResultDTO.setSuccessful(true);
            return queryResultDTO;
        } catch (SQLException e) {
            QueryResultDTO queryResultDTO = new QueryResultDTO();
            queryResultDTO.setSuccessful(false);
            queryResultDTO.setErrorMessage(e.getMessage());
            return queryResultDTO;
        }
    }
}

在 Angular Controller 中:

app.controller("AppCtrl",function($scope,$http) {
    var app = this;

    $scope.execute= function () {
        $http({
            url: '../query/select',
            method: "GET",
            data: { 'message' : $scope.queryText }
        })
            .then(function(response) {
                    $scope.queryResult = response.data;
                    console.log($scope.queryResult);
                    console.log($scope.queryText)
                },
                function(response) {
                    console.log(response);
                });
    }

});

我的主要问题是我想将一些数据发送到我的 Spring Controller ，然后发送 JSON 以响应我的 Angular Controller 。 Whith GET 方法响应工作完美，但是当我使用 POST 时，甚至不会调用 Controller 方法。

编辑:

我的QueryDTO类很简单:

public class QueryDTO {

    private String message;

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
}

还有一些 DEBUG 级别的日志:

2016-06-06 09:28:23.697 DEBUG 7504 --- [nio-8090-exec-2] o.s.web.servlet.DispatcherServlet        : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2016-06-06 09:28:23.698 DEBUG 7504 --- [nio-8090-exec-2] o.s.web.servlet.DispatcherServlet        : Successfully completed request

Answer 1

尝试在您的方法中添加 consumes=MediaType.APPLICATION_JSON_VALUE。

@Transactional
@RequestMapping(value = "/userlogincheck", method = RequestMethod.POST,   consumes=MediaType.APPLICATION_JSON_VALUE)
public @ResponseBody void userLoginCheck(@RequestBody UserImpl user, HttpServletRequest request, HttpServletResponse response) throws JSONException, IOException {
JSONObject json = new JSONObject();
    try {
        String email=user.getEmail();
        Long userId=user.getId();
        User loginData = accountService.userLoginCheck(email,userId);
        if(loginData==null)
        {
            json.put("status", "FAILURE");
            json.put("message", "user does not exist");
            json.put("nextPage", "signIn");
        }
        else
        {
            json.put("status", "SUCCESS");
            json.put("nextPage", updateState);
        }
    }
    catch(Exception e) {
        logger.info(e.getMessage());
    }
    response.setContentType("application/json;charset=UTF-8");
    logger.info("response======" + json.toString());
    PrintWriter out = response.getWriter();
    out.write(json.toString());
}