SpringBoot2.0拦截器与 1.X版本拦截器的实现

最新推荐文章于 2025-08-17 21:38:20 发布

转载最新推荐文章于 2025-08-17 21:38:20 发布 · 113 阅读

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原文链接：http://www.cnblogs.com/wenbuzhu/p/9967737.html

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#java

1.5 版本

先写个拦截器，跟xml配置方式一样，然后将拦截器加入spring容器管理。接着创建配置文件类继承 WebMvcConfigurerAdapter 类，重写父类方法addInterceptors

@Component
public class MyInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
       //true放行  false拦截
        System.out.println("拦截");
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
        System.out.println("preHandle()执行过后再执行");
        System.out.println("controller执行前再执行");
    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
        System.out.println("controller执行过后再执行");
    }
}

拦截器类

@Configuration
public class WebConfig extends WebMvcConfigurerAdapter{

    @Autowired
    private MyInterceptor myInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(myInterceptor)
                .addPathPatterns("/**")
                .excludePathPatterns("/index","/login");
        super.addInterceptors(registry);
    }

}

配置文件类

2.0 版本跟1.5一样就是配置类需要的是实现WebMvcConfigurer接口不再是继承 WebMvcConfigurerAdapter 类，通过spring代码可以发现 WebMvcConfigurerAdapter implements WebMvcConfigurer 这种关系.

@Configuration
public class MvcConfig  implements WebMvcConfigurer {
    @Autowired
    private MyInterceptor myInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(webInterceptor())
                .addPathPatterns("/**")
                .excludePathPatterns("/asserts/**","/receiveToken","/ssoLogout","/ssoDeleteToken");
        ;
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
    //addResourceLocations指的是文件放置的目录，addResoureHandler指的是对外暴露的访问路径
        registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
    }

}