springboot拦截器
package com.park.interceptor; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.InterceptorRegistration; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; /** * * * @Package: com.*.*.config * @ClassName: LoginConfig * @Description:拦截器配置 * @author: zk * @date: 2019年9月19日 下午2:18:35 */ @Configuration public class LoginConfig implements WebMvcConfigurer { @Override public void addInterceptors(InterceptorRegistry registry) { //注册TestInterceptor拦截器 InterceptorRegistration registration = registry.addInterceptor(new AdminInterceptor()); registration.addPathPatterns("/**"); //所有路径都被拦截 registration.excludePathPatterns( //添加不拦截路径 "/login", "/desk", "/LoginCheck", "/PickUp", "/Park" ); } }
package com.park.interceptor; import java.io.IOException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import com.park.pojo.AdminTable; import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAndView; /** * * * @Package: com.*.*.interceptor * @ClassName: AdminInterceptor * @Description:拦截器 * @author: zk * @date: 2019年9月19日 下午2:20:57 */ public class AdminInterceptor implements HandlerInterceptor { /** * 在请求处理之前进行调用(Controller方法调用之前) */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) { // System.out.println("执行了TestInterceptor的preHandle方法"); System.out.println(11111); try { //统一拦截(查询当前session是否存在user)(这里user会在每次登陆成功后,写入session) String admin= (String) request.getSession().getAttribute("adminname"); if(admin!=null){ return true; } response.sendRedirect(request.getContextPath()+"/login"); } catch (IOException e) { e.printStackTrace(); } return true;//如果设置为false时,被请求时,拦截器执行到此处将不会继续操作 //如果设置为true时,请求将会继续执行后面的操作 } /** * 请求处理之后进行调用,但是在视图被渲染之前(Controller方法调用之后) */ @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) { // System.out.println("执行了TestInterceptor的postHandle方法"); } /** * 在整个请求结束之后被调用,也就是在DispatcherServlet 渲染了对应的视图之后执行(主要是用于进行资源清理工作) */ @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) { // System.out.println("执行了TestInterceptor的afterCompletion方法"); } }