获取当前线程中的HttpServletRequest对象

1、使用spring注解自动注入也是线程安全

参考：

https://blog.csdn.net/xiaoguangtouqiang/article/details/80885270?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522165615329416781818729269%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fblog.%2522%257D&request_id=165615329416781818729269&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~blog~first_rank_ecpm_v1~rank_v31_ecpm-1-80885270-null-null.nonecase&utm_term=Spring%E8%8E%B7%E5%8F%96HttpServletRequest&spm=1018.2226.3001.4450

@Autowired
private HttpServletRequest httpServletRequest;

1.1 通过接口调用处理的类使用其获取参数是正常的

1.2 如果是通过spring的监听或者定时任务发起的请求HttpServletRequest不为空，但是使用其获取参数的时候 62行会抛出异常（原因是@Autowired注入的是代理类每次执行时会从当前线程获取具体的对象，但是定时任务发起的请求没有HttpServletRequest所以校验报错）

org.springframework.web.context.request.RequestContextHolder#currentRequestAttributes

 

 

 

2、提取内部获取逻辑自己实现的工具类避免报错的问题

package com.hdx.common.hdxspringinit.utils;

import org.springframework.stereotype.Controller;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Controller
public class HttpServerletRequestUtils {

    /**
     * 获取当前线程HttpServletRequest对象
     *
     * @return HttpServletRequest
     */
    public HttpServletRequest getServerRequest(){
        HttpServletRequest httpServletRequest = null;
        try {
            RequestAttributes requestattributes  = RequestContextHolder.getRequestAttributes();
            if (requestattributes == null) {
                return null;
            }
            ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) requestattributes;
            if (servletRequestAttributes == null) {
                return null;
            }
            httpServletRequest = servletRequestAttributes.getRequest();
        } catch (Exception exception) {
            // 打印异常信息
            exception.printStackTrace();
        }

        return httpServletRequest;
    }

}