登录拦截器
package com.zxf.interceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import com.zxf.dto.User;
@Component
public class LoginInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
HttpSession session = request.getSession();
User user = (User) session.getAttribute("user1");
if(user!=null) {
return true;
}else {
session.setAttribute("error", "亲,先登录");
response.sendRedirect("/toLogin");
return false;
}
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
// TODO Auto-generated method stub
HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
throws Exception {
// TODO Auto-generated method stub
HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
}
}
package com.zxf.interceptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class MyWebAppConfigurer implements WebMvcConfigurer {
@Autowired
private LoginInterceptor login;
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(login).addPathPatterns("/main/**");
}
}
注入,进行拦截,跳转页面