Question

我使用Restangular来使用REST API，即使我在开发者控制台上看到XHR请求成功，它也总是给我这个错误。

错误

{
  "data":null,
  "status":-1,
  "config":{
      "method":"GET",
      "transformRequest":[null],
      "transformResponse":[null],
      "jsonpCallbackParam":"callback",
      "headers":{"Accept":"application/json, text/plain, */*"},
      "url":"http://localhost:8080/profile/v1/support/tickets"},
      "statusText":""
}

Restangular API调用

angular.module('adf-widget-tickets-module-service',['restangular'])
  .service('ticketCRUDService', function ($rootScope, Restangular, $http) {
  Restangular.setBaseUrl('http://localhost:8080/profile/v1/support');
  this.readTickets = function () {
      Restangular.all('tickets').getList().then(function (response) {
          var test =  response.json;
          console.log(test);
          return test;
      },function (err) {
          console.error(JSON.stringify(err));
      },function () {
          console.log("loading......");
      })
  };
}

你能否告诉我，我在这里做错了什么？

更新

以下是我的REST端点的代码

@GET
@Path("tickets")
@Produces("application/json")
public Response getAllTickets(){
    ArrayList<Ticket> allTickets = new ArrayList<>();
    try {
        allTickets = elasticAPI.getAllTickets();
    } catch (UnknownHostException e) {
        e.printStackTrace();
    }
    return Response.ok(gson.toJson(allTickets), MediaType.APPLICATION_JSON_TYPE).build();
}

Answer 1

为什么您的端点返回-1状态代码？

Angular仅在：200和299

之间解析

/*
* A response status code between 200 and 299 is considered a success status and will result in
* the success callback being called. Any response status code outside of that range is
* considered an error status and will result in the error callback being called.
* Also, status codes less than -1 are normalized to zero. -1 usually means the request was
* aborted, e.g. using a `config.timeout`.
* Note that if the response is a redirect, XMLHttpRequest will transparently follow it, meaning
* that the outcome (success or error) will be determined by the final response status code.
*/

https://github.com/angular/angular.js/blob/master/src/ng/http.js#L457

Answer 2

正如我猜测问题不在我的客户端代码上。正因为如此，请求因CORS而被拒绝服务器。为CORS支持设置适当的响应头可以解决问题。

尽管请求成功，但为什么restangular会出错？

2 个答案: