标签：color app gen conf fir leave pat get exce
SpringBoot整合Filter有两种方式：
方式一：通过扫描注解方式完成Filter组件注册
步骤一：创建一个Filter
package com.shiqp.test.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.annotation.WebFilter; /** * * @description SpringBoot整合Filter * @author shiqi * @date 2020-12-15下午8:42:24 */ @WebFilter(filterName = "FirstFilter", urlPatterns = "/test") public class FirstFilter implements Filter { /** * @desc 初始化 */ public void init(FilterConfig filterConfig) { } @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { // TODO Auto-generated method stub System.out.println("enter filter..."); chain.doFilter(request, response); System.out.println("leave filter..."); } /** * @desc 销毁 */ public void destroy() { } }
步骤二：编写一个启动类
package com.shiqp.test;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
@SpringBootApplication
@ServletComponentScan
public class TestApplication {
public static void main(String[] args) {
SpringApplication.run(TestApplication.class, args);
}
}
步骤三：启动TestApplication
步骤四：在浏览器中输入访问地址http://localhost:8080/test
步骤五：查看访问日志
至此，方式一结束
方式二：通过方法完成Filter组件注册
步骤一：创建一个Filter
package com.shiqp.test.filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
public class SecondFilter implements Filter{
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
System.out.println("enter filter...");
chain.doFilter(request, response);
System.out.println("leave filter...");
}
}
步骤二：创建一个启动类
package com.shiqp.test;
import javax.servlet.Filter;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import com.shiqp.test.filter.SecondFilter;
@SpringBootApplication
public class TestApplication1 {
public static void main(String[] args) {
SpringApplication.run(TestApplication1.class, args);
}
/**
*
* @description 注册filter类
* @author shiqi
* @date 2020-12-15 20:54:37
* @return
*/
@Bean
public FilterRegistrationBean<Filter> getFilterRegistrationBean() {
FilterRegistrationBean<Filter> bean = new FilterRegistrationBean<Filter>(new SecondFilter());
bean.addUrlPatterns("/test");
return bean;
}
}
其余步骤同方式一。
回顾一下，SpringMVC配置过滤器：
<filter> <filter-name>过滤器名</filter-name> <filter-class>过滤器路径</filter-class> </filter> <filter-mapping> <filter-name>过滤器名</filter-name> <url-pattern>过滤规则</url-pattern> </filter-mapping>
由上可见，SpringBoot通过注解或方法的方式实现了SpringMVC的Filter节点配置。非常的方便。
开发环境：
JDK1.8
SpringBoot2.1.6.RELEASE
标签：color app gen conf fir leave pat get exce
原文地址：https://www.cnblogs.com/babylove/p/14141100.html
