Spring Boot 接收GET请求中文乱码，项目统一编码UTF-8,第三方回调通知GET请求GBK编码

百度各种方法都试了，没有一点效果，实际上在进controller之前已经乱码了，怎么URLDecoder.decode都没用，怎么getBytes修改编码都没有用

直接针对某个请求做编码处理

解决方案如下：

package com.yctnet.electronicticket.config;

import org.apache.catalina.connector.Request;
import org.apache.catalina.connector.RequestFacade;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.servlet.*;
import java.io.IOException;
import java.lang.reflect.Field;
import java.nio.charset.Charset;

/**
 * 针对第三方请求我方服务器编码格式不一致的问题
 */
@Configuration
public class GBKFilterConfig {
    @Bean
    public FilterRegistrationBean gbkFilter() {
        FilterRegistrationBean registration = new FilterRegistrationBean();
        registration.setDispatcherTypes(DispatcherType.REQUEST);
        registration.setFilter(new Filter() {
            @Override
            public void init(javax.servlet.FilterConfig filterConfig) throws ServletException {
            }

            @Override
            public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
                    throws IOException, ServletException {
                RequestFacade req = (RequestFacade) request;
                Class clazz = req.getClass();
                try {
                    Field field = clazz.getDeclaredField("request");
                    field.setAccessible(true);
                    Request r = (Request) field.get(req);
                    org.apache.coyote.Request p = r.getCoyoteRequest();
                    p.getParameters().setQueryStringCharset(Charset.forName("GBK"));
                    chain.doFilter(request, response);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void destroy() {
            }
        });
        // 针对处理的请求
        registration.addUrlPatterns("/v1/api/ruipu/notify");
        registration.addUrlPatterns("/v1/api/diandian/order");
        registration.setName("gbkFilter");
        registration.setOrder(Integer.MIN_VALUE);
        return registration;
    }
}