SpringBoot之过滤器

Posted 2021-02-09 zengnansheng

MyFilter1.java

package com.zns.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;

@WebFilter(filterName = "myFilter1", urlPatterns = "/*")
public class MyFilter1 implements Filter {

    @Override
    public void init(FilterConfig config) throws ServletException {
        System.out.println("过滤器初始化");
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        System.out.println("执行过滤操作");
        chain.doFilter(request, response);
    }

    @Override
    public void destroy() {
        System.out.println("过滤器销毁");
    }
}

 

在启动类增加@ServletComponentScan注解