golang http服务器跨域问题解决

func main() {
 
    openHttpListen()
}
 
func openHttpListen() {
    http.HandleFunc("/", receiveClientRequest)
    fmt.Println("go server start running...")
 
    err := http.ListenAndServe(":9090", nil)
    if err != nil {
        log.Fatal("ListenAndServe: ", err)
    }
}
 
func receiveClientRequest(w http.ResponseWriter, r *http.Request) {
 
    w.Header().Set("Access-Control-Allow-Origin", "*")             //允许访问所有域
    w.Header().Add("Access-Control-Allow-Headers", "Content-Type") //header的类型
    w.Header().Set("content-type", "application/json")             //返回数据格式是json
 
    r.ParseForm()
    fmt.Println("收到客户端请求: ", r.Form)

测试下来,发现web端发送数据给go服务器是可以收到的,就在go服务器返回数据给client web端的时候,出现了跨域错误提示,给http.ResponseWriter.Header() 加这三行代码即可:

w.Header().Set("Access-Control-Allow-Origin", "*")             //允许访问所有域
w.Header().Add("Access-Control-Allow-Headers", "Content-Type") //header的类型
w.Header().Set("content-type", "application/json")             //返回数据格式是json

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转载自www.cnblogs.com/gao88/p/9822748.html