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app.js
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app.js
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var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var cors = require('cors');
const swaggerUi = require('swagger-ui-express');
const swaggerDocument = require('./swagger-output.json');
var usersRouter = require('./routes/users');
var todosRouter = require('./routes/todos');
require('./connections/mongoose');
var app = express();
process.on('uncaughtException', (err) => {
console.error('未捕捉異常例外!');
console.error('錯誤:', err);
process.exit(1)
})
process.on('unhandledRejection', (reason, promise) => {
console.error('未捕捉異步異常例外!');
console.error('原因:', reason);
console.error('回溯:', promise);
})
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(cors());
app.use('/users', usersRouter /* #swagger.tags = ['User - 使用者'] */);
app.use('/todos', todosRouter /* #swagger.tags = ['Todo - 待辦事項'] */)
app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerDocument));
app.use((req, res, next) => {
res.status(404).json({
status: 'false',
message: '該頁面不存在!'
})
})
app.use((err, req, res, next) => {
const statusCode = err.statusCode || 500;
// 開發中錯誤
if (process.env.NODE_ENV === 'development') {
res.status(statusCode).json({
status: 'false',
errorName: err.name,
errorCode: statusCode,
errorMessage: err.message,
stacks: err.stack,
errors: err
});
}
// 已部署
if (process.env.NODE_ENV === 'production') {
if (err.name === 'TypeError') {
err.isOperational = true;
err.message = '資料型別錯誤,請檢查輸入的資料型別!';
}
if (err.name === 'SyntaxError') {
err.isOperational = true;
err.message = '語法錯誤,請檢查資料格式!';
}
if (err.name === 'CastError') {
err.isOperational = true;
err.message = '沒有該名使用者,請檢查 User ID 格式!';
}
if (err.name === 'JsonWebTokenError') {
err.isOperational = true;
err.message = '使用了無效的 token,請檢查 token 格式!';
}
if (err.isOperational) {
res.status(statusCode).json({
status: 'false',
message: err.message
})
} else {
res.status(500).json({
status: 'error',
message: '系統發生問題,請聯繫管理員!'
})
}
}
})
module.exports = app;