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31 lines
1018 B
31 lines
1018 B
package server
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import (
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"context"
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"github.com/go-kratos/kratos/v2/middleware"
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"github.com/go-kratos/kratos/v2/transport"
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"github.com/go-kratos/kratos/v2/transport/http"
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)
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// 跨域资源共享的中间件
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func MWCors() middleware.Middleware {
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return func(handler middleware.Handler) middleware.Handler {
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return func(ctx context.Context, req interface{}) (reply interface{}, err error) {
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if tr, ok := transport.FromServerContext(ctx); ok {
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// Do something on entering
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// 在响应中增加特定的头信息
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ht := tr.(http.Transporter)
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ht.ReplyHeader().Set("Access-Control-Allow-Origin", "*")
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ht.ReplyHeader().Set("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,PATCH,DELETE")
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ht.ReplyHeader().Set("Access-Control-Allow-Credentials", "true")
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ht.ReplyHeader().Set("Access-Control-Allow-Headers", "Content-Type,User-Agent,Content-Length,Authorization,Accept,Referer,Host")
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defer func() {
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// Do something on exiting
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}()
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}
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return handler(ctx, req)
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}
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}
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}
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