How to debug golang

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 thegolang tutorialcolumn on the PHP Chinese website.

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