1. 创建 Filter 类，实现 Fitler接口
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import java.io.IOException;
/**
* @Auther: Dandwj
* @Date: 2019/3/20 23:00
* @Description:
*/
@WebFilter(filterName = "myFilter",urlPatterns = "/login/*")
public class AuthorFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
//处理请求
filterChain.doFilter(servletRequest, servletResponse);
}
@Override
public void destroy() {
}
}
然后加上 @WebFilter 注解
2. 在启动类上加上@ServletComponentScan(basePackages = "pers.dandwj.cheerful.service")注解 MyFilter 是在 basePackages包下
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.transaction.annotation.EnableTransactionManagement;
@SpringBootApplication
@ServletComponentScan(basePackages = "pers.dandwj.cheerful.service")
public class CheerfulWxApiApplication {
public static void main(String[] args) {
SpringApplication.run(CheerfulWxApiApplication.class, args);
}
}
扩展：
三种拦截器比较：
原文：https://www.cnblogs.com/Dandwj/p/10582227.html