48 lines
1023 B
Go
48 lines
1023 B
Go
package middleware
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import (
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"encoding/json"
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"net/http"
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"server/internal/model/common"
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)
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type ResponseWriter struct {
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http.ResponseWriter
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statusCode int
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bytes int
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errorMsg string
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}
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func NewResponseRecorder(w http.ResponseWriter) *ResponseWriter {
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return &ResponseWriter{
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ResponseWriter: w,
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statusCode: http.StatusOK,
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}
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}
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func (rw *ResponseWriter) WriteHeader(code int) {
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rw.statusCode = code
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rw.ResponseWriter.WriteHeader(code)
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}
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// extractErrorMessage 从响应体中提取错误信息
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func (rw *ResponseWriter) extractErrorMessage(body []byte) string {
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var resp common.Response
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if err := json.Unmarshal(body, &resp); err == nil && resp.Message != "" {
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return resp.Message
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}
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return string(body)
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}
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func (rw *ResponseWriter) Write(b []byte) (int, error) {
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n, err := rw.ResponseWriter.Write(b)
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rw.bytes += n
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// 只在错误状态码且未记录错误时处理
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if rw.statusCode >= 400 && rw.errorMsg == "" && n > 0 {
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rw.errorMsg = rw.extractErrorMessage(b[:n])
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}
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return n, err
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}
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