标签：res request 修改 组件 创建 let url 扫描 code
1，方式一
【1】通过注解扫描完成Filter组件注册
/*@WebFilter(filterName = "FirstFilter",urlPatterns = {"*.do","*.jsp"})*/
@WebFilter(filterName = "FirstFilter",urlPatterns = "/first")
public class FirstFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
System.out.println("进入FirstFilter...");
filterChain.doFilter(servletRequest,servletResponse);
System.out.println("退出FirstFilter...");
}
@Override
public void destroy() {
}
}
【2】修改启动类
@SpringBootApplication
@ServletComponentScan//在Spring Boot启动时会扫描@WebFiter注解，并将该类实例
public class SpringbootwebApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootwebApplication.class, args);
}
}
2，方式二
【1】通过方法完成Filter组件注册
public class SecondFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
System.out.println("进入SecondFilter...");
filterChain.doFilter(servletRequest,servletResponse);
System.out.println("退出SecondFilter...");
}
@Override
public void destroy() {
}
}
【2】创建Filter配置类
@Configuration
public class FilterConfig {
@Bean
public FilterRegistrationBean getFilterRegistrationBean()
{
FilterRegistrationBean bean = new FilterRegistrationBean(new SecondFilter());
/*bean.addUrlPatterns(new String[]{"*.do","*.jsp"});*/
bean.addUrlPatterns("/second");
return bean;
};
}
标签：res request 修改 组件 创建 let url 扫描 code
原文地址：https://www.cnblogs.com/yz-bky/p/12690821.html
