SpringBoot - 使用Filter
2021-05-16 21:29
标签:int pre run sys etc 扫描 注册 servlet spring 访问:http://localhost:8080/one 后台打印: 访问:http://localhost:8080/two 打印: SpringBoot - 使用Filter 标签:int pre run sys etc 扫描 注册 servlet spring 原文地址:https://www.cnblogs.com/simple-ly/p/9748197.html1、在SpringBoot中使用Filter
1.1、使用注解注册Filter:
/**
* SpringBoot使用Filter
*/
@WebFilter(filterName="OneFilter",urlPatterns="/one")
public class OneFIlter 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("start OneFilter ...");
filterChain.doFilter(servletRequest, servletResponse);
System.out.println("end OneFilter ...");
}
@Override
public void destroy() {
}
}
@SpringBootApplication
//在 springBoot 启动时会扫描@WebFilter并实例化
@ServletComponentScan
public class AppOne {
public static void main(String[] args) {
SpringApplication.run(AppOne.class, args);
}
}
1.2、另一种初始化Filter的方法:方法注册
/**
* SpringBoot使用Filter
*/
public class TwoFilter 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("start TwoFilter ...");
filterChain.doFilter(servletRequest, servletResponse);
System.out.println("end TwoFilter ...");
}
@Override
public void destroy() {
}
}
@SpringBootApplication
public class AppTwo {
public static void main(String[] args) {
SpringApplication.run(AppTwo.class, args);
}
@Bean
public FilterRegistrationBean registrationFilterBean(){
FilterRegistrationBean bean = new FilterRegistrationBean(new TwoFilter());
// 过滤多个url,可以使用字符串数组
// bean.addUrlPatterns(new String[]{"*.do","*.jsp"});
bean.addUrlPatterns("/two");
return bean;
}
}
文章标题:SpringBoot - 使用Filter
文章链接:http://soscw.com/index.php/essay/86427.html