go fiber: 把异常信息写到错误日志中

一，代码:

1,userBusiness.go

package businessimport ("fmt")//得到多个用户，按分页返回
func GetUserList(page int ,pageSize int) (string,error) {b := 0a:=100/bfmt.Println(a)return "1,2,3",nil
}

代码中包含有除0错，会引发panic

2,userController.go

它用调用包含除0错的userBusiness

package controllerimport ("github.com/gofiber/fiber/v2"//"time""industry/business""fmt"
)type UserController struct{}func NewUserController() *UserController {return &UserController{}
}func (dc *UserController) ListUser(c *fiber.Ctx) error {// 处理列出用户的逻辑list,_:=business.GetUserList(1,30)fmt.Println(list)return c.SendString("列出用户")
}

3,recoverMiddleware.go

参考了fiber官方的recover类，添加了写日志功能

package middlewareimport ("fmt"//"os""runtime/debug""time""github.com/gofiber/fiber/v2""industry/config"
)//在中间件中得到panic,获取堆栈后写入到日志中
func NewRecover(c *fiber.Ctx) (err error) { //nolint:nonamedreturns // Uses recover() to overwrite the error// Catch panicsdefer func() {if r := recover(); r != nil {// fmt.Printf("panic: %v\n%s\n", r.(error), debug.Stack())timeStr:=time.Now().Format("2006-01-02 15:04:05")//得到时间,ip地址,请求的地址，参数，user-agent,fullURL := c.OriginalURL()   //urlclientIP := c.IP()    //ip地址method := c.Method() // 获取请求方法userAgent := c.Get("User-Agent")   //user agent// 获取所有查询参数queryParams := fmt.Sprintf("%v",c.Queries())fmt.Println("Query Params:", queryParams)filename:="/data/logs/gologs/exception-" + time.Now().Format("2006-01-02") + ".log"content:="["+timeStr+"] "+r.(error).Error()+"\n"+clientIP+" "+method+" "+fullURL+" "+userAgent+"\n"+queryParams+"\n"+string(debug.Stack())+"\n"config.GlobalWriteFile(filename,content)var ok boolif err, ok = r.(error); !ok {// Set error that will call the global error handlererr = fmt.Errorf("%v", r)}}}()// Return err if exist, else move to next handlerreturn c.Next()
}

 

4,routes.go

package routesimport ("github.com/gofiber/fiber/v2""industry/controller""runtime/debug""industry/middleware""fmt"
)func SetupRoutes() *fiber.App {app := fiber.New(fiber.Config{ErrorHandler: func(c *fiber.Ctx, err error) error {// 发送自定义错误页面//return c.Status(code).JSON(config.Error("内部错误:"+err.Error()))return c.SendString("内部错误:"+err.Error())},})app.Use(middleware.NewRecover)//用户模块userController := controller.NewUserController()user := app.Group("/user")user.Get("/info", userController.GetUser)user.Post("/", userController.CreateUser)user.Get("/list", userController.ListUser)return app
}

5,写日志的类:

package configimport ("os""fmt"
)// filename:文件路径,content:要写的内容
func GlobalWriteFile(filename,content string) error {// 输出到文件file, err := os.OpenFile(filename, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)if err != nil {fmt.Println("日志文件的打开错误 : " + err.Error())return err}defer file.Close()if _, err := file.WriteString(content); err != nil {fmt.Println("写入日志文件错误 : " + err.Error())return err}return nil
}

 

二，测试效果:

[2024-11-14 17:56:51] runtime error: integer divide by zero
192.168.219.1 POST /user/list?token=111&a=22&c=33 PostmanRuntime/7.42.0
map[a:22 c:33 token:111]
goroutine 21 [running]:
runtime/debug.Stack()/usr/local/soft/go/src/runtime/debug/stack.go:26 +0x5e
industry/middleware.NewRecover.func1()/data/goapp/industry/middleware/recoverMiddleware.go:37 +0x29a
panic({0x6f9360?, 0xa08960?})/usr/local/soft/go/src/runtime/panic.go:785 +0x132
industry/business.GetUserList(0x7f008002000000?, 0xc00005ba80?)/data/goapp/industry/business/userBusiness.go:9 +0x9
industry/controller.(*UserController).ListUser(0x467edd?, 0xc00014e008)/data/goapp/industry/controller/userController.go:29 +0x26
github.com/gofiber/fiber/v2.(*App).next(0xc0000e4a08, 0xc00014e008)/data/gopath/pkg/mod/github.com/gofiber/fiber/v2@v2.52.5/router.go:145 +0x1be
github.com/gofiber/fiber/v2.(*Ctx).Next(0x10?)/data/gopath/pkg/mod/github.com/gofiber/fiber/v2@v2.52.5/ctx.go:1034 +0x4d
industry/middleware.NewRecover(0x6f65e0?)/data/goapp/industry/middleware/recoverMiddleware.go:50 +0x53
github.com/gofiber/fiber/v2.(*App).next(0xc0000e4a08, 0xc00014e008)/data/gopath/pkg/mod/github.com/gofiber/fiber/v2@v2.52.5/router.go:145 +0x1be
github.com/gofiber/fiber/v2.(*App).handler(0xc0000e4a08, 0x4adc0f?)/data/gopath/pkg/mod/github.com/gofiber/fiber/v2@v2.52.5/router.go:172 +0x69
github.com/valyala/fasthttp.(*Server).serveConn(0xc0000ec248, {0x7d3198, 0xc0000ac1e0})/data/gopath/pkg/mod/github.com/valyala/fasthttp@v1.57.0/server.go:2385 +0xed1
github.com/valyala/fasthttp.(*workerPool).workerFunc(0xc00011a090, 0xc0000e63a0)/data/gopath/pkg/mod/github.com/valyala/fasthttp@v1.57.0/workerpool.go:225 +0x92
github.com/valyala/fasthttp.(*workerPool).getCh.func1()/data/gopath/pkg/mod/github.com/valyala/fasthttp@v1.57.0/workerpool.go:197 +0x32
created by github.com/valyala/fasthttp.(*workerPool).getCh in goroutine 1/data/gopath/pkg/mod/github.com/valyala/fasthttp@v1.57.0/workerpool.go:196 +0x194