拦截器1
public class MyInteceptor1 implements HandlerInterceptor{
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
// TODO Auto-generated method stub
System.out.println("方法前1");
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
// TODO Auto-generated method stub
System.out.println("方法后1");
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
throws Exception {
// TODO Auto-generated method stub
System.out.println("页面渲染后1");
}
}
拦截器2
public class MyInteceptor2 implements HandlerInterceptor{
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
// TODO Auto-generated method stub
System.out.println("方法前2");
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
// TODO Auto-generated method stub
System.out.println("方法后2");
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
throws Exception {
// TODO Auto-generated method stub
System.out.println("页面渲染后2");
}
}
执行结果：
总结一下：
preHandle按拦截器定义顺序地调用
postHandle按拦截器定义逆序地调用
afterCompletion按拦截器定义逆序地调用
postHandle在截器链内所有拦截器返回成功调用
afterCompletion只有在preHandle返回true才调用