问题描述
在我当前开发的应用程序中,它正在使用Express.就我而言,我想在发送响应之前得到响应并进行修改(出于JWT的目的).在此应用程序中,有十二个端点,我不想创建自己的函数,例如 sendAndSign()
,并在代码中的任何地方替换 res.send()
.我听说有选项可以覆盖/修改 res.send(...)
方法的逻辑.
In application which I currently develop, it's using Express. In my case I want to get response before it's been sent and modify it (for purpose of JWT). In this application, there is a dozen of endpoints and I don't want to create my own function like sendAndSign()
and replace res.send()
everywhere in code. I heard there is option to override/modify logic of res.send(...)
method.
我发现了这样的内容修改示例,但在我的情况下,此方法无效.还有其他选项(也许使用某些插件)来管理此操作吗?
I found something like this example of modifying, but in my case this doesn't work. Is there any other option (maybe using some plugin) to manage this action?
推荐答案
您可以通过临时覆盖 res.send
:
function convertData(originalData) {
// ...
// return something new
}
function responseInterceptor(req, res, next) {
var originalSend = res.send;
res.send = function(){
arguments[0] = convertData(arguments[0]);
originalSend.apply(res, arguments);
};
next();
}
app.use(responseInterceptor);
我在Node.js v10.15.3中进行了测试,效果很好.
I tested in Node.js v10.15.3 and it works well.
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