tlias管理系统--登录校验-过滤器Filter快速入门

tlias-web-management/src/main/java/com/inmind/TliasWebManagementApplication.java

@@ -2,8 +2,11 @@ package com.inmind;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.web.servlet.ServletComponentScan;
 
 @SpringBootApplication
+//开启对servlet组件的支持
+@ServletComponentScan
 public class TliasWebManagementApplication {
 
     public static void main(String[] args) {

tlias-web-management/src/main/java/com/inmind/filter/DemoFilter.java

@@ -0,0 +1,27 @@
+package com.inmind.filter;
+
+import javax.servlet.*;
+import javax.servlet.annotation.WebFilter;
+import java.io.IOException;
+
+@WebFilter(urlPatterns = "/*")
+public class DemoFilter implements Filter {
+    @Override
+    public void init(FilterConfig filterConfig) throws ServletException {
+        Filter.super.init(filterConfig);
+        System.out.println("init，过滤器的初始化方法执行了");
+    }
+
+    @Override
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException {
+        System.out.println("doFilter，过滤器的拦截方法执行了");
+        //放行
+        filterChain.doFilter(request,response);
+    }
+
+    @Override
+    public void destroy() {
+        Filter.super.destroy();
+        System.out.println("destroy，过滤器的销毁方法执行了");
+    }
+}