[英]How to handle a exception thrown in c# by a javascript web app?
I'm developing a web application with a client side build with html5 and javascript using, overall, dojo framework (I'm using xhr.post function to communicate with server). 我正在开发一个Web应用程序,并使用整体dojo框架(带有html5和javascript)进行客户端构建(我正在使用xhr.post函数与服务器进行通信)。 The server side is an asmx service in c#. 服务器端是c#中的asmx服务。
Here comes the problem: when a webmethod of my service throws an exception: 问题来了:当我的服务的网络方法引发异常时:
try
{
throw new Exception("TEST");
}
catch (Exception ex)
{
throw ex;
// TODO: send some info to the client about the error
}
the client is realized than an error has occured and fires the error callback function: 意识到客户端已发生错误,并触发错误回调函数:
deferred = xhr.post({
url: that.config.urlService,
handleAs: that.config.handleAs,
contentType: that.config.contentType,
postData: that.config.parameters
});
deferred.then(function (res) {
that.success(res);
},
function (err) {
if (that.config.callbackFail) {
that.config.callbackFail(err, that.config.parameters);
}
}
);
But in the 'err' paramater I don't have the exception info, I have the message: 但是在'err'参数中,我没有异常信息,但有消息:
'NetworkError: 500 Internal Server Error - http:/.../Services/Applications/Metrawa/ServiceManagement/WSJob.asmx/Filter' 'NetworkError:500 Internal Server Error-http:/.../ Services / Applications / Metrawa / ServiceManagement / WSJob.asmx / Filter'
and inspecting the call to server with firebug, in the response tab I can see strange characters, like if the exception hasn't been serialized. 并使用firebug检查对服务器的调用,在“响应”选项卡中,我可以看到奇怪的字符,例如未序列化异常。
What I want is to get the exception info in javascript. 我想要的是获取javascript中的异常信息。 I've searched some info about this, like to create an own serializable exception class, but it doesn´t work neither. 我已经搜索了一些与此相关的信息,例如创建了一个自己的可序列化的异常类,但是它都不起作用。 Any solution? 有什么办法吗?
Thanks in advance. 提前致谢。
您可以选择在服务器端代码中处理该异常,然后以JSON,XML甚至String的形式发送回该异常,即客户端可以理解的内容。
I would catch the exception server side and always return a valid object with a "Result" property: 我将捕获异常服务器端,并始终返回带有“ Result”属性的有效对象:
eg res.Result (as "OK" or "ERR" etc and handle that on the client) 例如res.Result(如“ OK”或“ ERR”等,并在客户端上处理)
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