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  • springboot 增加过滤器方法

    在访问服务器时,我们需要控制用户是否允许权限,这个时候可以使用过滤器。

    在springboot 配置过滤器的方法如下:

    编写过滤器代码:

    package com.neo.filter;
    
    import java.io.IOException;
    
    import javax.servlet.Filter;
    import javax.servlet.FilterChain;
    import javax.servlet.FilterConfig;
    import javax.servlet.ServletException;
    import javax.servlet.ServletRequest;
    import javax.servlet.ServletResponse;
    import javax.servlet.http.HttpServletRequest;
    public class MyFilter implements Filter {
    
        @Override
        public void destroy() {
        }
    
        @Override
        public void doFilter(ServletRequest srequest, ServletResponse sresponse, FilterChain filterChain)
                throws IOException, ServletException {
            HttpServletRequest request = (HttpServletRequest) srequest;
            System.out.println("this is MyFilter,url :"+request.getRequestURI());
            filterChain.doFilter(srequest, sresponse);
        }
    
        @Override
        public void init(FilterConfig arg0) throws ServletException {
        }
    
    }

    编写加载过滤器代码:

    package com.neo.conf;
    
    import org.springframework.boot.web.servlet.FilterRegistrationBean;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    import com.neo.filter.MyFilter;
    import com.neo.filter.MyFilter2;
    
    @Configuration
    public class WebConfiguration {
        
        @Bean
        public FilterRegistrationBean registerFilter() {
    
            FilterRegistrationBean registration = new FilterRegistrationBean();
            registration.setFilter(new MyFilter());
            registration.addUrlPatterns("/*");
            registration.addInitParameter("paramName", "paramValue");
            registration.setName("MyFilter");
            registration.setOrder(1);
            return registration;
        }
    
        
        @Bean
        public FilterRegistrationBean registerFilter2() {
    
            FilterRegistrationBean registration = new FilterRegistrationBean();
            registration.setFilter(new MyFilter2());
            registration.addUrlPatterns("/*");
            registration.addInitParameter("paramName", "paramValue");
            registration.setName("MyFilter2");
            registration.setOrder(2);
            return registration;
        }
    }

    这里我们看到我们注册了两个过滤器,过滤器的执行顺序通过setOrder确定。

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  • 原文地址:https://www.cnblogs.com/yg_zhang/p/9788100.html
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