Spring 拦截器

最新推荐文章于 2024-10-04 18:40:30 发布

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最新推荐文章于 2024-10-04 18:40:30 发布

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分类专栏： springboot 文章标签： java interceptor spring boot

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本文详细介绍了如何在Spring MVC应用中实现登录拦截器，包括`LoginInterceptor`的实现和`LoginConfig`的配置，确保只有已登录用户才能访问特定资源。

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import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;



@Component
public class LoginInterceptor implements HandlerInterceptor {

    private static Logger log = LoggerFactory.getLogger(LoginInterceptor.class);



    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws NoLoginException, NoPermissionException {
        //此处做校验
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }


    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}


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;

/**
 * 拦截器配置
 */
@Configuration
public class LoginConfig implements WebMvcConfigurer {

    @Autowired
    private LoginInterceptor loginInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginInterceptor).addPathPatterns("/**");
    }
}