function catchException (func, controller) {
    return async function (req, res, next) {
        req.allParams = Object.assign({}, req.query, req.body, req.params)
        LOG.info('req.allParams\n %s', JSON.stringify(req.allParams))
        try {
            await func.call(controller, req, res)
        } catch (e) {
            // 非route调用没有req, res, next参数
            if (next) {
                next(e)
            } else {
                throw e
            }
        }
        next()
    }
}
// 装饰控制器，捕获异步异常等统一由 express 的错误中间件 errorHandle 处理
function exceptionDecorator(controller) {
    Object.keys(controller).map(item=>{
        if (typeof controller[item] === 'function') {
            controller[item] = catchException(controller[item], controller)
        }
    })
    return controller
}
export default exceptionDecorator

对controller进行包装，这样controller里面的异常都会被catchException捕获，然后统一处理。如果不这样处理，异步发生异常时只能在process.on('uncaughtException', fn）和process.on('unhandledRejection', fn）中处理，无法再express框架层处理

export default exceptionDecorator({

    /**
     * 列表数据
     * @return
     */
    async list(req, res, next) {
        const response = await Project.findAll({
            include: [
                {
                    model: Host,
                    as: 'hosts'
                }
            ],
            order: ['name']
        })
        return res.success(response);
    }
})