SpringAOP实现功能权限校验功能的示例代码-创新互联
实现功能权限校验的功能有多种方法,其一使用拦截器拦截请求,其二是使用AOP抛异常。
成都创新互联是一家专注于成都网站制作、成都网站建设与策划设计,桑植网站建设哪家好?成都创新互联做网站,专注于网站建设10余年,网设计领域的专业建站公司;建站业务涵盖:桑植等地区。桑植做网站价格咨询:18980820575首先用拦截器实现未登录时跳转到登录界面的功能。注意这里没有使用AOP切入,而是用拦截器拦截,因为AOP一般切入的是service层方法,而拦截器是拦截控制器层的请求,它本身也是一个处理器,可以直接中断请求的传递并返回视图,而AOP则不可以。
1.使用拦截器实现未登录时跳转到登录界面的功能
1.1 拦截器SecurityInterceptor
package com.jykj.demo.filter; import java.io.PrintWriter; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAndView; import com.alibaba.fastjson.JSON; import com.jykj.demo.util.Helper; import com.jykj.demo.util.Result; public class SecurityInterceptor implements HandlerInterceptor{ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { System.out.println("SecurityInterceptor:"+request.getContextPath()+","+request.getRequestURI()+","+request.getMethod()); HttpSession session = request.getSession(); if (session.getAttribute(Helper.SESSION_USER) == null) { System.out.println("AuthorizationException:未登录!"+request.getMethod()); if("POST".equalsIgnoreCase(request.getMethod())){ response.setContentType("text/html; charset=utf-8"); PrintWriter out = response.getWriter(); out.write(JSON.toJSONString(new Result(false,"未登录!"))); out.flush(); out.close(); }else{ response.sendRedirect(request.getContextPath()+"/login"); } return false; } else { return true; } } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { // TODO Auto-generated method stub } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { // TODO Auto-generated method stub } }
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