不能编辑啊

``package com.xiaobu.controller;

import org.springframework.boot.autoconfigure.web.ErrorProperties;
import org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController;
import org.springframework.boot.web.servlet.error.DefaultErrorAttributes;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;

/**

• @author xiaobu

• @Version JDK1.8.0_171

• @Date on 2019/2/21 11:56

• @description V1.0
  */
  @controller
  public class MyErrorController extends BasicErrorController {
  public MyErrorController() {
  super(new DefaultErrorAttributes(), new ErrorProperties());
  }

  /**

  •     * 定义500的ModelAndView
  •     * @param request
  •     * @param response
  •     * @return
    */
    @RequestMapping(produces = "text/html", value = "/404")
    public ModelAndView errorHtml404(HttpServletRequest request, HttpServletResponse response) {
    response.setStatus(getStatus(request).value());
    Map<String, Object> model = getErrorAttributes(request, isIncludeStackTrace(request, MediaType.TEXT_HTML));
    model.put("msg", "自定义错误信息");
    return new ModelAndView("error/404", model);
    }

  @RequestMapping(produces = "text/html", value = "/500")
  public ModelAndView errorHtml500(HttpServletRequest request, HttpServletResponse response) {
  response.setStatus(getStatus(request).value());
  Map<String, Object> model = getErrorAttributes(request, isIncludeStackTrace(request, MediaType.TEXT_HTML));
  model.put("msg", "自定义错误信息");
  return new ModelAndView("error/500", model);
  }

  /**

  •     * 定义500的错误JSON信息
  •     * @param request
  •     * @return
    */
    @RequestMapping(value = "/500")
    @responsebody
    public ResponseEntity<Map<String, Object>> error500(HttpServletRequest request) {
    Map<String, Object> body = getErrorAttributes(request, isIncludeStackTrace(request, MediaType.TEXT_HTML));
    HttpStatus status = getStatus(request);
    return new ResponseEntity<Map<String, Object>>(body, status);
    }

}

package com.xiaobu.config;

import org.springframework.boot.web.server.ConfigurableWebServerFactory;
import org.springframework.boot.web.server.ErrorPage;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;

/**

• 自定义的异常页面配置
  */
  @component
  public class ErrorPagesConfig {

  /**

  • 自定义异常处理路径
    */
    @bean
    public WebServerFactoryCustomizer webServerFactoryCustomizer() {
    //第二种写法：java8 lambda写法
    return (factory -> {
    ErrorPage errorPage404 = new ErrorPage(HttpStatus.NOT_FOUND, "/error/404");
    ErrorPage errorPage500 = new ErrorPage(HttpStatus.INTERNAL_SERVER_ERROR, "/error/500");
    ErrorPage errorPage401 = new ErrorPage(HttpStatus.UNAUTHORIZED, "/error/500");
    ErrorPage errorPage403 = new ErrorPage(HttpStatus.INTERNAL_SERVER_ERROR, "/error/500");
    factory.addErrorPages(errorPage404);
    factory.addErrorPages(errorPage500);
    factory.addErrorPages(errorPage401);
    factory.addErrorPages(errorPage403);
    });

  }

}

• [ ]

老师，我现在遇到一个问题 就是我添加了菜单，为什么左边一栏还是没有显示我新添加的菜单呢

微博上私信你，你回的好慢啊……一个星期之后给我会一个……

每次都刷新整个页面

❤️ thanks

Caused by: org.apache.shiro.UnavailableSecurityManagerException: No SecurityManager accessible to the calling code, either bound to the org.apache.shiro.util.ThreadContext or as a vm static singleton. This is an invalid application configuration. at org.apache.shiro.SecurityUtils.getSecurityManager(SecurityUtils.java:123) at org.apache.shiro.subject.Subject$Builder.<init>(Subject.java:626) at org.apache.shiro.SecurityUtils.getSubject(SecurityUtils.java:56) at com.jagregory.shiro.freemarker.SecureTag.getSubject(SecureTag.java:32) at com.jagregory.shiro.freemarker.UserTag.render(UserTag.java:30) at com.jagregory.shiro.freemarker.SecureTag.execute(SecureTag.java:16) at freemarker.core.Environment.visit(Environment.java:445) at freemarker.core.UnifiedCall.accept(UnifiedCall.java:101) at freemarker.core.Environment.visit(Environment.java:330) at freemarker.core.Environment.visit(Environment.java:336) at freemarker.core.Environment.include(Environment.java:2582) at freemarker.core.Include.accept(Include.java:171) at freemarker.core.Environment.visit(Environment.java:330) at freemarker.core.Environment.visit(Environment.java:336) at freemarker.core.Environment.include(Environment.java:2582) at freemarker.core.Include.accept(Include.java:171) at freemarker.core.Environment.visit(Environment.java:330) at freemarker.core.Environment.visit(Environment.java:336) at freemarker.core.Environment.process(Environment.java:309) at freemarker.template.Template.process(Template.java:384) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.processTemplate(FreeMarkerView.java:389) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.doRender(FreeMarkerView.java:302) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.renderMergedTemplateModel(FreeMarkerView.java:253) at org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:178) at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1370) at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1116) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1055) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) ... 26 common frames omitted