- spring boot拦截器默认有
- HandlerInterceptorAdapter
- AbstractHandlerMapping
- UserRoleAuthorizationInterceptor
- LocaleChangeInterceptor
- ThemeChangeInterceptor
- 添加 WebMvcConfigurerAdapter 配置
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@Configuration
public class MyWebAppConfigurer extends WebMvcConfigurerAdapter {
@Override
public void addInterceptors(InterceptorRegistry registry) {
// 多个拦截器组成一个拦截器链
// addPathPatterns 用于添加拦截规则
// excludePathPatterns 用户排除拦截
registry.addInterceptor(new MyInterceptor1()).addPathPatterns("/**");
registry.addInterceptor(new MyInterceptor2()).addPathPatterns("/**");
super.addInterceptors(registry);
}
}
3.截器编写
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class MyInterceptor1 implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
System.out.println(">>>MyInterceptor1>>>>>>>在请求处理之前进行调用(Controller方法调用之前)");
return true;// 只有返回true才会继续向下执行,返回false取消当前请求
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
System.out.println(">>>MyInterceptor1>>>>>>>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 afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
throws Exception {
System.out.println(">>>MyInterceptor1>>>>>>>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)");
}
}
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class MyInterceptor2 implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
System.out.println(">>>MyInterceptor2>>>>>>>在请求处理之前进行调用(Controller方法调用之前)");
return true;// 只有返回true才会继续向下执行,返回false取消当前请求
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
System.out.println(">>>MyInterceptor2>>>>>>>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 afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
throws Exception {
System.out.println(">>>MyInterceptor2>>>>>>>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)");
}
}
完成!!