调用Redmine API时jsonp获得404

Question

我试图从angularjs项目中使用Redmine API.

我最终使用jsonp来解决CORS问题.

我打电话给这个时收到404:

var url = 'http://muser:mpasswd@myredmine/issues.json?callback=displayIssues';
 $http({
                method: 'JSONP',
                url: url
            }).
            success(function (data, status) {
                console.log("success");
                console.log(data);
            }).
            error(function (data, status) {
                console.log("Error: " + status);
            });
...
    function displayIssues(issues) {
                console.log('displayIssues');
                ...
            }

但是当我用Postman调用相同的URL时,它可以工作.

为什么我收到这个404？

这是我的控制台:

GET http://muser:mpasswd@myredmine/issues.json?callback=displayIssues jsonpReq @ angular.js:8576(anonymous function) @ angular.js:8420sendReq @ angular.js:8291serverRequest @ angular.js:8025wrappedCallback @ angular.js:11498wrappedCallback @ angular.js:11498(anonymous function) @ angular.js:11584Scope.$eval @ angular.js:12608Scope.$digest @ angular.js:12420Scope.$apply @ angular.js:12712(anonymous function) @ angular.js:18980x.event.dispatch @ jquery-2.0.3.min.js:5y.handle @ jquery-2.0.3.min.js:5
authentication.service.js:100 Error: 404

Rest- API和jsonp都在admin-> setting-> auth中启用

我也尝试过:

        var url = 'http://muser:mpasswd@myredmine/redmine/issues.json&callback=JSON_CALLBACK';
        $http.jsonp(url, {
            params: {
                callback: 'JSON_CALLBACK',
                format: 'json'
            }
        }).success(function (data) {
            console.log('ok');
        }).error(function (data) {
            console.log('error: ' + JSON.stringify(data));
        });

得到这个:

GET http://muser:mpasswd@myredmine/issues.json&callback=angular.callbacks._0?callback=JSON_CALLBACK&format=json jsonpReq @ angular.js:8576(anonymous function) @ angular.js:8420sendReq @ angular.js:8291serverRequest @ angular.js:8025wrappedCallback @ angular.js:11498wrappedCallback @ angular.js:11498(anonymous function) @ angular.js:11584Scope.$eval @ angular.js:12608Scope.$digest @ angular.js:12420Scope.$apply @ angular.js:12712(anonymous function) @ angular.js:18980x.event.dispatch @ jquery-2.0.3.min.js:5y.handle @ jquery-2.0.3.min.js:5
services.js:35 error: undefined

另外,在调用时:

var url = 'http://muser:mpasswd@myredmine/redmine/issues.json&callback=JSON_CALLBACK';
            $http.jsonp(url).success(function (data) {
                console.log('success');
            }).error(function (error) {
                console.log('error:: ' + error);
            });

我犯了同样的错误

请考虑muser,mpasswd和myredmine就是例子.

Answer 1

来自ngDocs:

回调的名称应该是字符串JSON_CALLBACK

Angular将在内部用一个替换该字符串 angular.callbacks_{0-9a-z}

所以首先将代码更改为:

var url = 'http://muser:mpasswd@myredmine/redmine/issues.json?callback=JSON_CALLBACK';
$http.jsonp(url).succe...

玩这个小提琴似乎Redmine.从网址中删除点,从而制作angular.callbacks_0出angularcallback_0未定义的点.
你可以在github上阅读更多内容,但有一个问题.

可能的解决方案

1)有其他人所发布用户对SO一劈这里给回调的名称更改为一个自定义.

工作拨弄根据@托迪,Adiatmo的黑客.

2)根据@dancras在github上发布的问题上发现的另一个解决方案是angularcallbacks_{..}通过调用来定义undefined ,angular.callbacks_{..}然后删除全局angularcallbacks_.
您必须在jsonp调用之前立即使用它:

var c = $window.angular.callbacks.counter.toString(36);

$window['angularcallbacks_' + c] = function (data) {
    $window.angular.callbacks['_' + c](data);
    delete $window['angularcallbacks_' + c];
};

根据@ danca的解决方案工作小提琴.