39 lines
703 B
Go
39 lines
703 B
Go
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package middleware
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import (
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"bytes"
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"fmt"
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"github.com/gin-gonic/gin"
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)
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// 原理是创建的时候注入了一个方法处理响应的信息
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func ResponseFilterMiddleware(c *gin.Context) {
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fmt.Println(c.Writer)
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blw := &bodyLogWriter{
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body: bytes.NewBufferString(""),
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ResponseWriter: c.Writer,
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}
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c.Writer = blw
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c.Next()
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statusCode := c.Writer.Status()
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fmt.Println(statusCode)
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fmt.Println("拦截输出")
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}
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type bodyLogWriter struct {
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gin.ResponseWriter
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body *bytes.Buffer
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}
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// 真正输出的时候，它会调用这个输出方法
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func (w bodyLogWriter) Write(b []byte) (int, error) {
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// b = []byte(`{"code":0}`)
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w.body.Write(b)
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return w.ResponseWriter.Write(b)
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}
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