Node.js 从express services传递错误消息
在我的节点应用程序中,我有以下代码Node.js 从express services传递错误消息,node.js,express,Node.js,Express,在我的节点应用程序中,我有以下代码 import gravatar from 'gravatar'; import bcrypt from 'bcryptjs'; import config from 'config'; import jwt from 'jsonwebtoken'; import { User } from '../models/user'; class AuthService { /** Register user */ async registerUser(us
import gravatar from 'gravatar';
import bcrypt from 'bcryptjs';
import config from 'config';
import jwt from 'jsonwebtoken';
import { User } from '../models/user';
class AuthService {
/** Register user */
async registerUser(userDto) {
const { firstName, lastName, email, password } = userDto;
let user = await User.findOne({ email });
if (user) throw new Error('Email already exists');
const avatar = this.createAvatar(email);
user = new User({ firstName, lastName, email, password, avatar });
user.password = await this.hashPassword(user.password);
await user.save();
const token = this.generateAuthToken(user);
return { user, token }
}
当有一封重复的电子邮件时,邮递员会给出正确的错误消息,但它是这样的
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Error</title>
</head>
<body>
<pre>Error: Email already exists
<br> at AuthService._callee$ (/home/shashika/PROJECTS/developer-connector/server/services/authService.js:14:21)
<br> at tryCatch (/home/shashika/PROJECTS/developer-connector/server/node_modules/regenerator-runtime/runtime.js:65:40)
<br> at Generator.invoke [as _invoke] (/home/shashika/PROJECTS/developer-connector/server/node_modules/regenerator-runtime/runtime.js:303:22)
<br> at Generator.prototype.<computed> [as next] (/home/shashika/PROJECTS/developer-connector/server/node_modules/regenerator-runtime/runtime.js:117:21)
<br> at step (/home/shashika/PROJECTS/developer-connector/server/services/authService.js:30:191)
<br> at /home/shashika/PROJECTS/developer-connector/server/services/authService.js:30:361
<br> at processTicksAndRejections (internal/process/task_queues.js:89:5)
</pre>
</body>
</html>
错误
错误:电子邮件已存在
在AuthService._callee$(/home/shashika/PROJECTS/developer connector/server/services/AuthService.js:14:21)
在tryCatch(/home/shashika/PROJECTS/developer connector/server/node_modules/registrator runtime/runtime.js:65:40)
在Generator.invoke[as_invoke](/home/shashika/PROJECTS/developer connector/server/node_modules/registrator runtime/runtime.js:303:22)
在Generator.prototype.computed[as next](/home/shashika/PROJECTS/developer connector/server/node_modules/registrator runtime/runtime.js:117:21)
在步骤(/home/shashika/PROJECTS/developer connector/server/services/authService.js:30:191)
at/home/shashika/PROJECTS/developer connector/server/services/authService.js:30:361
在处理和拒绝时(内部/process/task_queues.js:89:5)
我只想要错误信息。但是为什么这会给我这个html代码呢?这是来自express/node的。这是一个例外,不应提供给客户。您应该捕获错误并用自己的错误详细信息进行响应。错误仅在服务器内部抛出。您应该做的是使用适当的HTTP错误代码创建一个响应,并将其发送回客户端。 假设您在上面的其他地方发现了错误,您的代码应该是这样的。如果您不告诉我们您在哪里以及如何呼叫registerUser
export default (err, req, res, next) => {
console.log('Server err', err.message);
return res.status(err.status || 500).json({
error: err.message
});
};
您可以创建用于错误处理的全局中间件。这只是它如何工作的示例代码。只需将此中间件作为index.js(app.js?)中的最后一个中间件 errorMiddleware.js
import errors from './middleware/errorMiddleware';
...
// your middlewares
...
app.use(errors);
app.js
这只是一个基本示例,您可以按照自己的方式对其进行自定义(仅在开发环境中发送err.message,或者根据错误类型或状态处理错误等等)。使用try/catch和express next()方法处理错误也是一种很好的方法。可以显示路由器代码吗?
import errors from './middleware/errorMiddleware';
...
// your middlewares
...
app.use(errors);