go jwt创建，校验

朴灿烈づ我的快乐病毒、 2023-02-12 13:24 129阅读 0赞

我这边使用的是这个包：

go get github.com/dgrijalva/jwt-go

例子：

package main
    
    import (
    	"fmt"
    	"github.com/dgrijalva/jwt-go"
    	"time"
    )
    
    const (
    	JwtSecretKey = "welcome@#dennyYANG'yi9012"//jwt校验字符串
    	JwtExpireSecond = 30//30秒过期
    )
    
    //存储在jwt的数据
    type Storejwt struct {
    	UserId int
    	Username string
    	Email string
    	exp int
    	expire int
    }
    
    //创建jwt字符串
    func CreateJwtToken(st Storejwt) (string,error) {
    
    	token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
    		"Userid": st.UserId,
    		"Username": st.Username,
    		"Email": st.Email,
    		//可以添加过期时间，这个参数必须小写哦,源码是小写的
    		"exp": time.Now().Add(time.Second * JwtExpireSecond).Unix(),
    	})
    
    	return token.SignedString([]byte(JwtSecretKey))//校验的字符串
    }
    
    //校验jwt字符串
    func ParseJwtToken(s string) (jwt.MapClaims, error) {
    	fn := func(token *jwt.Token) (interface{}, error) {
    		return []byte(JwtSecretKey), nil//校验字符串
    	}
    
    	result,error := jwt.Parse(s, fn)
    	if error!=nil{
    		return nil,error//signature is invalid or Token is expired
    	}
    
    	//解析存入去的jwt信息
    	finToken := result.Claims.(jwt.MapClaims)
    
    	return finToken,nil
    }
    func main() {
    
    	var storeJwt = Storejwt{UserId:100,Username:"张三",Email:"denny@mmoga.hk",}
    	//生成jwt token
    	tokenString,err := CreateJwtToken(storeJwt)
    	fmt.Println(err,tokenString)
    
    
    	//解析jwt token
    	result,err2 := ParseJwtToken(tokenString)
    	fmt.Println(err2,result,result["Userid"],result["Username"],result["Email"])
    }

解析jwt的内容：

![20200526132233835.png][]

[20200526132233835.png]: https://img-blog.csdnimg.cn/20200526132233835.png