spring boot 中设置默认网页的方法

  • Z时代
  • 2024-01-10
  • 分类：综合

废话不多说，直接上代码，相信都能看的懂

一共两布，第一步，创建Interceptor拦截

package com.cy.example.config;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
public class LoginInterceptor implements HandlerInterceptor {
  private Logger logger = LoggerFactory.getLogger(LoginInterceptor.class);
  public void postHandle(HttpServletRequest request,
      HttpServletResponse response, Object handler,
      ModelAndView modelAndView) throws Exception {
    // TODO Auto-generated method stub
  }
  public void afterCompletion(HttpServletRequest request,
      HttpServletResponse response, Object handler, Exception ex)
      throws Exception {
    // TODO Auto-generated method stub
  }
  public boolean preHandle(HttpServletRequest request,
      HttpServletResponse response, Object handler) throws Exception {
    // TODO Auto-generated method stub
    //获取session
    HttpSession session = request.getSession(true);
    logger.info("----进入登录拦截器--url："+request.getServletPath()+"-----");
    if(session.getAttribute(WebConfig.LOGIN_USER) == null){
      logger.info("------跳转到login页面-----");
      response.sendRedirect(request.getContextPath()+"/index");
      return false;
    }else{
      session.setAttribute(WebConfig.LOGIN_USER, session.getAttribute(WebConfig.LOGIN_USER));
      return true;
    }
  }
}

第二步，注册创建的拦截器

package com.cy.example.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {
  public static String LOGIN_USER = "loginUser";
  public WebConfig() {
    super();
  }
  //因为新加了拦截器，这里需要重新设置资源地址
  @Override
  public void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/static/**").addResourceLocations(
        "classpath:/static/");
    registry.addResourceHandler("/templates/**").addResourceLocations(
        "classpath:/templates/");
    super.addResourceHandlers(registry);
  }
  @Override
  public void configureDefaultServletHandling(
      DefaultServletHandlerConfigurer configurer) {
    configurer.enable();
  }
  @Override
  public void addInterceptors(InterceptorRegistry registry) {
    // 拦截规则：除了login，其他都拦截判断,excludePathPatterns是排除拦截的路径，一个是登录验证地址，一个是登录页
    registry.addInterceptor(new
LoginInterceptor()).addPathPatterns("/**").excludePathPatterns("/index","/system/user/validate");
    super.addInterceptors(registry);
  }
}

以上是 spring boot 中设置默认网页的方法 的全部内容， 来源链接： utcz.com/z/349721.html

回到顶部