28 lines
545 B
Go
28 lines
545 B
Go
package middleware
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import (
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"crypto/rand"
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"encoding/hex"
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"github.com/gin-gonic/gin"
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)
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// RequestID 为每个请求生成唯一 ID，放入 context 和响应头
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func RequestID() gin.HandlerFunc {
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return func(c *gin.Context) {
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// 优先使用客户端传来的 X-Request-ID
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id := c.GetHeader("X-Request-ID")
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if id == "" {
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b := make([]byte, 12)
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if _, err := rand.Read(b); err == nil {
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id = hex.EncodeToString(b)
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} else {
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id = "unknown"
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}
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}
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c.Set("request_id", id)
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c.Header("X-Request-ID", id)
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c.Next()
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}
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}
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