实现登录校验中间件
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50
internal/app/middleware/auth.go
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50
internal/app/middleware/auth.go
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// Package middleware 存放 gin 中间件
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package middleware
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import (
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"net/http"
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"strings"
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"git.huangwc.com/pig/pig-farm-controller/internal/app/service/token"
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"github.com/gin-gonic/gin"
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)
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const (
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// ContextUserIDKey 是存储在 gin.Context 中的用户ID的键名
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ContextUserIDKey = "userID"
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)
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// AuthMiddleware 创建一个Gin中间件,用于JWT身份验证
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// 它依赖于 TokenService 来解析和验证 token
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func AuthMiddleware(tokenService token.TokenService) gin.HandlerFunc {
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return func(c *gin.Context) {
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// 从 Authorization header 获取 token
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authHeader := c.GetHeader("Authorization")
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if authHeader == "" {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "请求未包含授权标头"})
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return
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}
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// 授权标头的格式应为 "Bearer <token>"
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parts := strings.Split(authHeader, " ")
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if len(parts) != 2 || parts[0] != "Bearer" {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "授权标头格式不正确"})
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return
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}
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tokenString := parts[1]
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// 解析和验证 token
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claims, err := tokenService.ParseToken(tokenString)
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if err != nil {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "无效的Token"})
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return
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}
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// 将解析出的用户ID存储在 context 中,以便后续的处理函数使用
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c.Set(ContextUserIDKey, claims.UserID)
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// 继续处理请求链中的下一个处理程序
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c.Next()
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}
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}
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