go-zero 中间件配置

 .api文件新增middleware，通过goctl api 生成文件以后，记得把文档往下翻一翻，还需要再svc里面加一些配置，然后再生成的文件中写入自己的业务

@server (
	prefix: /v1/system
	group:  system
	middleware: AuthInterceptor
)

package middleware

import (
	"go/application/internal/config"
	redisClient "go/application/sevice/redis"
	"go/pkg/jwt"
	"net/http"
	"time"
)

type AuthInterceptorMiddleware struct {
}

func NewAuthInterceptorMiddleware() *AuthInterceptorMiddleware {
	return &AuthInterceptorMiddleware{}
}

// 这个是goctl生成的函数
func (m *AuthInterceptorMiddleware) Handle(next http.HandlerFunc) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		// TODO generate middleware implement function, delete after code implementation
		authRequest := r.Header.Get("Authorization")
		if authRequest == "" {
			w.WriteHeader(http.StatusAccepted)
			w.Write([]byte("请登录"))
			return
		}
		// Token解密
		authParse, authErr := jwt.ParseToken(authRequest, config.GlobalConfig.Auth.AccessSecret)
		// 解密失败
		if authErr != nil {
			w.WriteHeader(http.StatusAccepted)
			w.Write([]byte(authErr.Error()))
		}
		// 初始化redis
		redis := redisClient.Init(config.GlobalConfig)
		val, redisErr := redis.Get(authParse.UserId).Result()
		if redisErr != nil {
			w.WriteHeader(http.StatusAccepted)
			w.Write([]byte(redisErr.Error()))
			return
		}
		// 查看redis中是否存在该用户id
		if val != "" {
			// 将用户id作为key，token做为value 重新存入redis   延长该用户token过期时长
			redis.Set(val, authRequest, time.Duration(config.GlobalConfig.Auth.AccessExpire))
		} else {
			w.WriteHeader(http.StatusAccepted)
			w.Write([]byte("token已过期"))
			return
		}
		next(w, r)
	}
}