Spring REST将布尔实体返回到AngularJS。。。以字符数组的形式出现

我试图在响应中返回一个布尔值。但在我的AngularJS应用程序中，它是一个字符数组：

资源{0:f'，1:a'，2:l'，3:s'，4:e'，$promise:Object，$resolved:true，$get:function，$save:function，$query:function…}

这是控制器：

@RequestMapping(value = RESTConstants.SLASH + "{id}" + RESTConstants.SLASH + RESTConstants.DEPENDENCIES, method = RequestMethod.GET)
@ResponseBody
public ResponseEntity<Boolean> hasDependencies(@PathVariable Long id, UriComponentsBuilder builder) {
    HttpHeaders responseHeaders = new HttpHeaders();
    Technology technology = technologyService.findById(id);
    if (technology == null) {
        return new ResponseEntity<Boolean>(responseHeaders, HttpStatus.NOT_FOUND);
    } else {
        Boolean hasDependencies = technologyService.hasDependencies(id);
        responseHeaders.setLocation(builder.path(RESTConstants.SLASH + RESTConstants.TECHNOLOGIES + RESTConstants.SLASH + "{id}" + RESTConstants.DEPENDENCIES).buildAndExpand(technology.getId()).toUri());
        return new ResponseEntity<Boolean>(hasDependencies, responseHeaders, HttpStatus.OK);
    }
}

@RequestMapping(value = RESTConstants.SLASH + "{id}" + RESTConstants.SLASH + RESTConstants.DEPENDENCIES, method = RequestMethod.GET)
@ResponseBody
public boolean hasDependencies(@PathVariable Long id, UriComponentsBuilder builder) {
    Technology technology = technologyService.findById(id);
    if (technology == null) {
        return false;
    } else {
        return technologyService.hasDependencies(id);
    }
}

以下是AngularJS代码：

'use strict';
utilsModule.factory('RESTService',
  ['$resource', 'ENV', 'FileUploader', 'AuthService',
  function($resource, ENV, FileUploader, AuthService) {
    return {
      Technology: $resource(ENV.NITRO_PROJECT_REST_URL + '/technologies/:technologyId', {}, {
        hasDependencies: {
          url: ENV.NITRO_PROJECT_REST_URL + '/technologies/:technologyId/dependencies',
          method: 'GET',
          params: { technologyId: 'technologyId' }
        }
      })
    }
  }
]);

'use strict';
technologyModule.factory('TechnologyService',
  ['RESTService',
  function(RESTService) {
    var factory = {};
    factory.hasDependencies = function(technologyId, callback) {
      return RESTService.Technology.hasDependencies({technologyId: technologyId}).$promise.then(callback);
    }
    return factory;
  }
]);

'use strict';
technologyModule.controller('technology.deleteCtrl',
  ['$scope', '$state', '$stateParams', 'TechnologyService',
  function($scope, $state, $stateParams, TechnologyService) {
    $scope.hasDependencies = true;
    TechnologyService.hasDependencies($stateParams.technologyId, function(hasDependencies) {
      console.log("hasDependencies", hasDependencies);
      $scope.hasDependencies = hasDependencies;
    });
  }
]);

在Chromium浏览器调试窗格中，网络标题选项卡显示： 远程地址：127.0.0.1:8443 请求URL:xxxxx:8443/project rest/technologies/4/dependencies 请求方法：获取 状态代码：200 OK 响应头视图源 访问控制允许标头：接受语言、内容类型、X-Requested-With、接受、来源、访问控制请求方法、访问控制请求标头、授权 访问控制允许方法：POST、PUT、GET、OPTIONS、DELETE 访问控制允许来源：xxxxx:9000 访问控制最大年龄：3600 缓存控制：无缓存，无存储，最大年龄=0，必须重新验证 内容类型：application/json；字符集=UTF-8 日期：2014年10月19日星期日07:47:59 GMT 过期日期：0 Pragma：没有缓存 服务器：ApacheCoote/1.1 严格的交通安全：最大年龄为31536000岁；包含子域 传输编码：分块 X-Content-Type-Options:nosniff X帧选项：拒绝 X-XSS-Protection:1；模式=块

“网络响应”选项卡显示：

---

false

我求助于使用包装器类：

public class ValueResource {

    private Object value;

    public ValueResource(Object value) {
        this.value = value;
    }

    public Object getValue() {
        return value;
    }

    public void setValue(Object value) {
        this.value = value;
    }

}

现在我可以返回一个响应实体：

return new ResponseEntity<ValueResource>(new ValueResource(hasDependencies), responseHeaders, HttpStatus.OK);

---

请出示你的角度代码。

TechnologyService.hasDependencies($stateParams.technologyId, function(data) {
  console.log("hasDependencies", data.value);
});