1、nginx中新增配置：

    set $args "$args&参数名=参数值";

   示例： set $args "$args&demo1=cn_yaojin&demo2=123123&myip=$remote_addr";

location / {
            add_header Access-Control-Allow-Origin *;
            add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';       
            proxy_pass     http://127.0.0.1:10024;
            # 以下是在原来接口的基础上增加的固定参数
			set $args "$args&demo1=cn_yaojin&demo2=123123&myip=$remote_addr";
            proxy_set_header   X-Real-IP $remote_addr;
            proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
      		proxy_set_header    Host $host;
       }

2、java代码测试效果

    @ApiOperation(value = "test")
    @GetMapping(value = "test")
    public ResultMsg test() {
        this.request.getParameterMap().forEach((k, v) -> {
            for (String s : v) {
                System.out.println(k + "--" + s);
            }
        });
        return ResultMsg.builder();
    }

3、查看实际效果：