Strange problems encountered shiro + cas separating the front and rear end

Record of strange @Value

Background
shiro + cas front end of the separator project

Look at the code

package com.jsong.wiki.backend.filter;

import com.alibaba.fastjson.JSON;
import lombok.extern.log4j.Log4j2;
import org.apache.shiro.cas.CasFilter;
import org.apache.shiro.web.servlet.ShiroHttpServletRequest;
import org.apache.shiro.web.util.SavedRequest;
import org.apache.shiro.web.util.WebUtils;
import org.mockito.internal.util.StringUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * casfilter过滤器
 * @Author: Jsong
 * @Date: 2020/2/27 21:58
 * @Description:
 */
//@Component
@Log4j2
public class MyAuthenticationFilter extends CasFilter {

    @Value("${front.baseUrl}")
    private String frontBaseUrl;
    @Value("{shiro.loginUrl}")
    private String loginUrl;
    @Value("${front.uri}")
    private String frontUri;
    @Value("${api.uri}")
    private  String apiUri;

    private String test = "http://127.0.0.1:28080/#";

//    @Autowired
//    private MyFormAuthenticationFilter myFormAuthenticationFilter;

    @Override
    protected void issueSuccessRedirect(ServletRequest request, ServletResponse response) throws Exception {
        String originalUrl = ((ShiroHttpServletRequest) request).getHeader(apiUri);
//        SavedRequest savedRequest = WebUtils.getAndClearSavedRequest(request);
        if (originalUrl == null || "".equals(originalUrl)) {
            // 重cookie中获取上次请求的地址，并且重定向到前端
            Cookie[] cookies = ((ShiroHttpServletRequest) request).getCookies();
            for (Cookie cookie : cookies) {
                if(frontUri.equals(cookie.getName())){
                    // 神奇的问题
//                    originalUrl = frontBaseUrl+ cookie.getValue();
//                    originalUrl = "http://127.0.0.1:28080/#"+ cookie.getValue();
                    originalUrl = frontBaseUrl + "/blog-edit";
//                    originalUrl = test + cookie.getValue();
//                    originalUrl = "http://127.0.0.1:28080/#/";
                    log.info("originalUrl:"+originalUrl);
                }
            }
        }
//        String requestUri = savedRequest.getRequestURI();
//        String redirectUrl = null;
//        String[] requestArray = requestUri.split("/blog-backend");
//        if(requestArray!=null&&requestArray.length>1){
//            redirectUrl = requestArray[1];
//        }
        log.info(originalUrl);
        WebUtils.redirectToSavedRequest(request, response, originalUrl);

    }

//    @Override
//    protected boolean onAccessDenied(ServletRequest request, ServletResponse response, Object mappedValue) throws Exception {
//
//        return myOnAccessDenied(request, response);
//    }
//
//    protected boolean myOnAccessDenied(ServletRequest request, ServletResponse response) throws Exception {
//        return myFormAuthenticationFilter.onAccessDenied(request, response);
//    }

}

	上面的代码是重写casFilter过滤器，用于过滤cas登录校验
	
	我的代码要达到的目的就是在cas登录成功后，在cookie中获取登录前前端的请求地址
	达到登录后重定向到前端。

But found a strange problem
when I use @Value of frontBaseUrl value, find a successful login, the interface is requested again, to find out whether certification is false, need to get service at times cas tgc, get st, at the interface go after certification.

originalUrl = frontBaseUrl+ cookie.getValue();

When I use the string directly after a successful login, again request interface, the authentication is successful, you do not need to exchange cas service again st

originalUrl = “http://127.0.0.1:28080/#”+ cookie.getValue()；

Amazing ignorant force