springboot-FilterRegistrationBean

最新推荐文章于 2023-10-07 16:55:01 发布

weixin_30799995

最新推荐文章于 2023-10-07 16:55:01 发布

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CC 4.0 BY-SA版权

文章标签： java

原文链接：http://www.cnblogs.com/xiangkejin/p/8513036.html

本文介绍如何通过编写自定义的Servlet Filter来实现特定的功能，并通过设置order来控制过滤器的执行顺序。提供了具体的代码示例及Spring配置方式。

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主要用来对servlet filter进行自定义，比如设置order。

先写一个普通的filter：

public class FilterDemo implements Filter {  
    private final Logger log = LoggerFactory.getLogger(FilterDemo.class);  
  
  
    @Override  
    public void destroy() {  
        log.info("" + getClass() + " destroy");  
  
    }  
  
    @Override  
    public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException {  
        log.info( " doFilter " );  
        arg2.doFilter(arg0, arg1);  
  
    }  
  
    @Override  
    public void init(FilterConfig arg0) throws ServletException {  
        log.info("" + getClass() + " init");  
  
    }  
  
}

配置如下：

@Configuration  
public class WebComponent2Config   {  
  
    @Bean  
    public FilterRegistrationBean filterDemo3Registration() {  
        FilterRegistrationBean registration = new FilterRegistrationBean();  
        registration.setFilter(filterDemo3());  
        registration.addUrlPatterns("/*");   
        registration.setName("filterDemo3");  
        registration.setOrder(6);  
        return registration;  
    }  
  
    @Bean  
    public FilterRegistrationBean filterDemo4Registration() {  
        FilterRegistrationBean registration = new FilterRegistrationBean();  
        registration.setFilter(filterDemo4());  
        registration.addUrlPatterns("/*");  
        registration.setName("filterDemo4");  
        registration.setOrder(7);  
        return registration;  
    }  
  
    @Bean  
    public Filter filterDemo3() {  
        return new FilterDemo3();  
    }  
  
    @Bean  
    public Filter filterDemo4() {  
        return new FilterDemo4();  
    }  
  
}