springboot初步认识---自定义filter

Spring Boot自动添加了OrderedCharacterEncodingFilter和HiddenHttpMethodFilter，直接自定义Filter。

步骤:

1.实现Filter接口，实现Filter方法

2.添加@Configuration 注解，将自定义Filter加入过滤链

自定义的filter类:

@Configuration
public class WebConfiguration {
    @Bean
    public RemoteIpFilter remoteIpFilter() {
        return new RemoteIpFilter();
    }

    @Bean
    public FilterRegistrationBean testFilterRegistration() {

        FilterRegistrationBean registration = new FilterRegistrationBean();
        registration.setFilter(new MyFilter());
        registration.addUrlPatterns("/*");
        registration.addInitParameter("paramName", "paramValue");
        registration.setName("MyFilter");
        registration.setOrder(1);
        return registration;
    }

    public class MyFilter implements Filter {
           
    　　　　 @Override
        public void destroy() {
            // TODO Auto-generated method stub
        }

        @Override
        public void doFilter(ServletRequest srequest, ServletResponse sresponse, FilterChain filterChain)
                throws IOException, ServletException {
            // TODO Auto-generated method stub
            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 {
            // TODO Auto-generated method stub
        }
    }
}

@Configuration public class WebConfiguration { @Bean public RemoteIpFilter remoteIpFilter() { return new RemoteIpFilter(); } @Bean public FilterRegistrationBean testFilterRegistration() { FilterRegistrationBean registration = new FilterRegistrationBean(); registration.setFilter(new MyFilter()); registration.addUrlPatterns("/*"); registration.addInitParameter("paramName", "paramValue"); registration.setName("MyFilter"); registration.setOrder(1); return registration; } public class MyFilter implements Filter { 　　　　 @Override public void destroy() { // TODO Auto-generated method stub } @Override public void doFilter(ServletRequest srequest, ServletResponse sresponse, FilterChain filterChain) throws IOException, ServletException { // TODO Auto-generated method stub 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 { // TODO Auto-generated method stub } } }

Spring Boot自动添加了OrderedCharacterEncodingFilter和HiddenHttpMethodFilter，直接自定义Filter。 步骤: 1.实现Filter接口，实现Filter方法 2.添加@Configuration 注解，将自定义Filter加入过滤链 自定义的filter类: @Configuration public class WebConfiguration { @Bean public RemoteIpFilter remoteIpFilter() { return new RemoteIpFilter(); } @Bean public FilterRegistrationBean testFilterRegistration() { FilterRegistrationBean registration = new FilterRegistrationBean(); registration.setFilter(new MyFilter()); registration.addUrlPatterns("/*"); registration.addInitParameter("paramName", "paramValue"); registration.setName("MyFilter"); registration.setOrder(1); return registration; } public class MyFilter implements Filter { 　　　　 @Override public void destroy() { // TODO Auto-generated method stub } @Override public void doFilter(ServletRequest srequest, ServletResponse sresponse, FilterChain filterChain) throws IOException, ServletException { // TODO Auto-generated method stub 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 { // TODO Auto-generated method stub } } }