Java 全局设置请求 Request，响应 Response，解决每次在接口层接收。

1：存储请求响应实体类，2  和 3 使用一种就好了

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 全局设置请求响应实体类
 */
public class HttpHeadHolder {
    private static final ThreadLocal requestHolder = new ThreadLocal<>();
    private static final ThreadLocal responseHolder = new ThreadLocal<>();

    public static void setrequest(HttpServletRequest request) {
        requestHolder.set(request);
    }
    public static void setresponse(HttpServletResponse response) {
        responseHolder.set(response);
    }

    public static HttpServletResponse getresponse() {
        return responseHolder.get();
    }
    public static HttpServletRequest getrequest() {
        return requestHolder.get();
    }

    public static void clear() {
        requestHolder.remove();
        responseHolder.remove();
    }
}

2：使用拦截器

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 拦截器处理全局请求头
 */
@Configuration
public class HttpRequestInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {
        HttpHeadHolder.setrequest(request);
        HttpHeadHolder.setresponse(response);
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
            ModelAndView modelAndView) throws Exception {
        HttpHeadHolder.clear();
    }
}

3.使用过滤器

import org.springframework.context.annotation.Configuration;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 过滤器设置全局请求头
 */
@Configuration
public class HttpRequestFilter implements Filter {


    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)  throws ServletException,IOException{
        HttpServletRequest httpRequest = (HttpServletRequest) request;
        HttpServletResponse httpResponse = (HttpServletResponse) response;

        HttpHeadHolder.setrequest(httpRequest);
        HttpHeadHolder.setresponse(httpResponse);
        // 获取请求的地址
        String requestURI = httpRequest.getRequestURI();

            // 继续执行过滤器链
            chain.doFilter(request, response);
            HttpHeadHolder.clear();

    }
}