23 lines
607 B
Go
23 lines
607 B
Go
package middleware
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import "net/http"
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// CORS 处理跨域资源共享
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func CORS(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// 设置CORS响应头
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w.Header().Set("Access-Control-Allow-Origin", "*")
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w.Header().Set("Access-Control-Allow-Methods", "GET, POST, OPTIONS")
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w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization")
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// 如果是预检请求，直接返回200
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if r.Method == http.MethodOptions {
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w.WriteHeader(http.StatusOK)
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return
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}
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// 继续下一个处理器
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next.ServeHTTP(w, r)
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})
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}
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