后端代码配置了跨域，前端仍然提示跨域失败

我在go项目中配置了cors中间件，但是前端请求人提示跨域问题，描述如下：

The 'Access-Control-Allow-Origin' header contains multiple values 'http://xxxxxx, *', but only one is allowed.

这是由于我配置了多次跨域配置，除了在代码中，我在nginx项目配置中找到了跨域配置，所以导致Origin出现两个值

 

代码配置如下：

return func(context *gin.Context) {
		method := context.Request.Method
		origin := context.Request.Header.Get("Origin")
		if len(origin) != 0 {
			context.Header("Access-Control-Allow-Origin", origin)
			context.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE, UPDATE, PATCH")
			context.Header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Authorization")
			context.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Cache-Control, Content-Language, Content-Type")
			context.Header("Access-Control-Allow-Credentials", "true")
		}

		if method == "OPTIONS" {
			context.AbortWithStatus(http.StatusNoContent)
		}
		context.Next()
	}

 

nginx配置：

 

把nginx跨域配置注释掉，恢复正常。