错误日志信息支持stack特性，该特性可以自动打印出当前调用日志组件方法的堆栈信息，该堆栈信息可以通过Notice*/Warning*/Error*/Critical*/Panic*/Fatal*等错误日志输出方法触发，也可以通过GetStack/PrintStack获取/打印。错误信息的stack信息对于调试来说相当有用。

示例1，通过错误方法触发

  1. package main
  3. import "github.com/gogf/gf/os/glog"
  5. func Test() {
  6.     glog.Error("This is error!")
  7. }
  9. func main() {
  10.     Test()
  11. }

打印出的结果如下：

  1. 2019-07-12 22:19:23.421 [ERRO] This is error!
  2. Stack:
  3. 1. main.Test
  4.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_error.go:6
  5. 2. main.main
  6.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_error.go:10

示例2，通过Stack方法打印

  1. package main
  3. import (
  4.     "fmt"
  6.     "github.com/gogf/gf/os/glog"
  7. )
  9. func main() {
  11.     glog.PrintStack()
  12.     glog.New().PrintStack()
  14.     fmt.Println(glog.GetStack())
  15.     fmt.Println(glog.New().GetStack())
  16. }

执行后，输出结果为：

  1. 2019-07-12 22:20:28.070 Stack:
  2. 1. main.main
  3.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_stack.go:11
  5. 2019-07-12 22:20:28.070 Stack:
  6. 1. main.main
  7.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_stack.go:12
  9. 1. main.main
  10.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_stack.go:14
  12. 1. main.main
  13.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_stack.go:15

示例3，打印gerror.Error

glog日志模块支持对标准错误以及gerror错误的堆栈打印支持。

  1. package main
  3. import (
  4.     "errors"
  5.     "github.com/gogf/gf/errors/gerror"
  6.     "github.com/gogf/gf/os/glog"
  7. )
  9. func MakeError() error {
  10.     return errors.New("connection closed with normal error")
  11. }
  13. func MakeGError() error {
  14.     return gerror.New("connection closed with gerror")
  15. }
  17. func TestGError() {
  18.     err1 := MakeError()
  19.     err2 := MakeGError()
  20.     glog.Error(err1)
  21.     glog.Error(err2)
  22. }
  24. func main() {
  25.     TestGError()
  26. }

执行后，终端输出：

  1. 2019-07-12 22:23:11.467 [ERRO] connection closed with normal error
  2. Stack:
  3. 1. main.TestGError
  4.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_gerror.go:20
  5. 2. main.main
  6.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_gerror.go:25
  8. 2019-07-12 22:23:11.467 [ERRO] connection closed with gerror
  9. 1. connection closed with gerror
  10.     1). main.MakeGError
  11.         /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_gerror.go:14
  12.     2). main.TestGError
  13.         /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_gerror.go:19
  14.     3). main.main
  15.         /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_gerror.go:25
  16. Stack:
  17. 1. main.TestGError
  18.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_gerror.go:21
  19. 2. main.main
  20.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/os/glog/glog_gerror.go:25