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Today I will share with you an article about how to debug golang. It has a very good reference value. Friends who need it can take a look.
How to debug golang
You can use the GoLang debugging toolDelve
1. First get
go get -u github.com/go-delve/delve/cmd/dlv
2. Write test code
func main(){ http.HandleFunc("/test",func(writer http.ResponseWriter,req *http.Request){ //TODO }) log.Fatal(http.ListenAndServe("127.0.0.1:8080",nil)) }
3. Start debug
dlv debug test.go
4. Breakpoint
1) For the method breakpoint:
b main.函数名
2) Run to the breakpoint:
c
3) For Break point of a certain line:
Need to get the location of the file and then break point:
b /Users/joker/go/src/…/test.go:14 对14行打断点
As for how to perform the same operation as on the ide: through n,s
n: Equivalent to F6 of Java-Eclipse
s: Equivalent to F5 of Java-Eclipse
How to view variables:p
p testName will output the value of testName
args: will output all method parameter information
locals: will output all local variables
Use Go play Debug, Info, Error level log
Directly upload the code:
package mylog import ( "log" "os" ) var ( Debug *log.Logger Info *log.Logger Error *log.Logger ) func init() { log.Println("init ...") Debug = log.New(os.Stdout, "[DEBUG] ", log.Ldate|log.Ltime|log.Lshortfile) Info = log.New(os.Stdout, "[INFO] ", log.Ldate|log.Ltime|log.Lshortfile) Error = log.New(os.Stderr, "[ERROR] ", log.Ldate|log.Ltime|log.Lshortfile) } package main import "mylog" func main(){ mylog.Debug.Println("good"); mylog.Info.Println("good"); mylog.Error.Println("good"); }
That’s it.
For more golang knowledge, please pay attention to the golang tutorial column on the PHP Chinese website.
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