nginx配置webservice出现Marshalling Error问题

server {
        listen       8866;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            proxy_pass http://tomcatS3;
            proxy_set_header Host $host:$server_port;
            #root   html;
            #index  index.html index.htm;
        }
}

proxy_set_header Host h o s t : host: host:server_port; ///这个一定要加，不然会找不到端口