springboot @webfilter FilterRegistrationBean「T」 |
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springboot @webfilter FilterRegistrationBean「T」
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1、@webfilter过滤指定url，在启动类加注解@ServletComponentScan 2、Filter类： 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.annotation.WebFilter; @WebFilter(urlPatterns="/task") public class DemoFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { System.out.println("Filter demo task"); chain.doFilter(request, response); } @Override public void destroy() { } }3、@webfilter过滤全部路径，在filter类上加 @Component 或 @Configuration 注解：
4、FilterRegistrationBean 过滤指定url 或 全部路径，直接在FilterRegistrationBean中配置即可： import org.apache.catalina.filters.RemoteIpFilter; import org.springframework.boot.web.servlet.FilterRegistrationBean; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import javax.servlet.*; import javax.servlet.http.HttpServletRequest; import java.io.IOException; @Configuration public class ConfigurationFilter { @Bean public RemoteIpFilter remoteIpFilter() { return new RemoteIpFilter(); } @Bean public FilterRegistrationBean testFilterRegistration() { FilterRegistrationBean registration = new FilterRegistrationBean(); registration.setFilter(new MyFilter());//添加过滤器 registration.addUrlPatterns("/user");//设置过滤路径，/*所有路径 //registration.addInitParameter("name", "alue");//添加默认参数 registration.setName("MyFilter");//设置优先级 registration.setOrder(2);//设置优先级 return registration; } 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 { } } }
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