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index dcd6ee5..0000000
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diff --git a/.idea/libraries/Maven__org_apache_tomcat_embed_tomcat_embed_core_9_0_13.xml b/.idea/libraries/Maven__org_apache_tomcat_embed_tomcat_embed_core_9_0_13.xml
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diff --git a/.idea/libraries/Maven__org_apache_tomcat_embed_tomcat_embed_el_9_0_13.xml b/.idea/libraries/Maven__org_apache_tomcat_embed_tomcat_embed_el_9_0_13.xml
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diff --git a/.idea/libraries/Maven__org_apache_tomcat_embed_tomcat_embed_jasper_9_0_13.xml b/.idea/libraries/Maven__org_apache_tomcat_embed_tomcat_embed_jasper_9_0_13.xml
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diff --git a/.idea/libraries/Maven__org_apache_tomcat_embed_tomcat_embed_websocket_9_0_13.xml b/.idea/libraries/Maven__org_apache_tomcat_embed_tomcat_embed_websocket_9_0_13.xml
deleted file mode 100644
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diff --git a/.idea/libraries/Maven__org_mockito_mockito_core_2_23_4.xml b/.idea/libraries/Maven__org_mockito_mockito_core_2_23_4.xml
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diff --git a/.idea/libraries/Maven__org_springframework_boot_spring_boot_2_1_1_RELEASE.xml b/.idea/libraries/Maven__org_springframework_boot_spring_boot_2_1_1_RELEASE.xml
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diff --git a/.idea/libraries/Maven__org_springframework_boot_spring_boot_autoconfigure_2_1_1_RELEASE.xml b/.idea/libraries/Maven__org_springframework_boot_spring_boot_autoconfigure_2_1_1_RELEASE.xml
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diff --git a/.idea/libraries/Maven__org_springframework_boot_spring_boot_configuration_processor_2_1_1_RELEASE.xml b/.idea/libraries/Maven__org_springframework_boot_spring_boot_configuration_processor_2_1_1_RELEASE.xml
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diff --git a/.idea/libraries/Maven__org_springframework_boot_spring_boot_devtools_2_1_1_RELEASE.xml b/.idea/libraries/Maven__org_springframework_boot_spring_boot_devtools_2_1_1_RELEASE.xml
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diff --git a/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_2_1_1_RELEASE.xml b/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_2_1_1_RELEASE.xml
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diff --git a/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_aop_2_1_1_RELEASE.xml b/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_aop_2_1_1_RELEASE.xml
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diff --git a/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_data_jpa_2_1_1_RELEASE.xml b/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_data_jpa_2_1_1_RELEASE.xml
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diff --git a/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_jdbc_2_1_1_RELEASE.xml b/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_jdbc_2_1_1_RELEASE.xml
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diff --git a/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_json_2_1_1_RELEASE.xml b/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_json_2_1_1_RELEASE.xml
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diff --git a/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_logging_2_1_1_RELEASE.xml b/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_logging_2_1_1_RELEASE.xml
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diff --git a/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_web_2_1_2_RELEASE.xml b/.idea/libraries/Maven__org_springframework_boot_spring_boot_starter_web_2_1_2_RELEASE.xml
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index cb1779a..0000000
--- a/.idea/libraries/Maven__org_springframework_spring_web_5_1_3_RELEASE.xml
+++ /dev/null
@@ -1,13 +0,0 @@
-<component name="libraryTable">
-  <library name="Maven: org.springframework:spring-web:5.1.3.RELEASE">
-    <CLASSES>
-      <root url="jar://$MAVEN_REPOSITORY$/org/springframework/spring-web/5.1.3.RELEASE/spring-web-5.1.3.RELEASE.jar!/" />
-    </CLASSES>
-    <JAVADOC>
-      <root url="jar://$MAVEN_REPOSITORY$/org/springframework/spring-web/5.1.3.RELEASE/spring-web-5.1.3.RELEASE-javadoc.jar!/" />
-    </JAVADOC>
-    <SOURCES>
-      <root url="jar://$MAVEN_REPOSITORY$/org/springframework/spring-web/5.1.3.RELEASE/spring-web-5.1.3.RELEASE-sources.jar!/" />
-    </SOURCES>
-  </library>
-</component>
\ No newline at end of file
diff --git a/.idea/libraries/Maven__org_springframework_spring_webmvc_5_1_3_RELEASE.xml b/.idea/libraries/Maven__org_springframework_spring_webmvc_5_1_3_RELEASE.xml
deleted file mode 100644
index c7ae6c2..0000000
--- a/.idea/libraries/Maven__org_springframework_spring_webmvc_5_1_3_RELEASE.xml
+++ /dev/null
@@ -1,13 +0,0 @@
-<component name="libraryTable">
-  <library name="Maven: org.springframework:spring-webmvc:5.1.3.RELEASE">
-    <CLASSES>
-      <root url="jar://$MAVEN_REPOSITORY$/org/springframework/spring-webmvc/5.1.3.RELEASE/spring-webmvc-5.1.3.RELEASE.jar!/" />
-    </CLASSES>
-    <JAVADOC>
-      <root url="jar://$MAVEN_REPOSITORY$/org/springframework/spring-webmvc/5.1.3.RELEASE/spring-webmvc-5.1.3.RELEASE-javadoc.jar!/" />
-    </JAVADOC>
-    <SOURCES>
-      <root url="jar://$MAVEN_REPOSITORY$/org/springframework/spring-webmvc/5.1.3.RELEASE/spring-webmvc-5.1.3.RELEASE-sources.jar!/" />
-    </SOURCES>
-  </library>
-</component>
\ No newline at end of file
diff --git a/demo/pom.xml b/demo/pom.xml
index b65b330..f71e8f5 100644
--- a/demo/pom.xml
+++ b/demo/pom.xml
@@ -89,15 +89,15 @@
             <optional>true</optional>
         </dependency>
         <!-- servlet依赖. -->
-        <!-- <dependency>
-             <groupId>javax.servlet</groupId>
-             <artifactId>javax.servlet-api</artifactId>
-             <scope>provided</scope>
-         </dependency>-->
-        <dependency>
-            <groupId>javax.servlet</groupId>
-            <artifactId>jstl</artifactId>
-        </dependency>
+       <!--<dependency>-->
+             <!--<groupId>javax.servlet</groupId>-->
+             <!--<artifactId>javax.servlet-api</artifactId>-->
+             <!--<scope>provided</scope>-->
+         <!--</dependency>-->
+        <!--<dependency>-->
+            <!--<groupId>javax.servlet</groupId>-->
+            <!--<artifactId>jstl</artifactId>-->
+        <!--</dependency>-->
         <dependency>
             <groupId>org.apache.tomcat.embed</groupId>
             <artifactId>tomcat-embed-jasper</artifactId>
@@ -106,9 +106,14 @@
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
-            <version>RELEASE</version>
+            <!--<version>RELEASE</version>-->
             <scope>compile</scope>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.session</groupId>
+            <artifactId>spring-session</artifactId>
+            <!--<version>RELEASE</version>-->
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/demo/src/main/java/com/example/demo/loginService/SessionFilter.java b/demo/src/main/java/com/example/demo/loginService/SessionFilter.java
index 0bedca9..c3cd0c4 100644
--- a/demo/src/main/java/com/example/demo/loginService/SessionFilter.java
+++ b/demo/src/main/java/com/example/demo/loginService/SessionFilter.java
@@ -53,6 +53,11 @@ public class SessionFilter implements Filter {
 //      return true;
 //    }
 
+    @Override
+    public void init(FilterConfig filterConfig) throws ServletException {
+
+    }
+
     @Override
     public void doFilter(ServletRequest request, ServletResponse response,
                          FilterChain chain) throws IOException, ServletException {
@@ -93,7 +98,11 @@ public class SessionFilter implements Filter {
             chain.doFilter(request, response);
         }
 
+
     }
 
+    @Override
+    public void destroy() {
 
+    }
 }
diff --git a/demo/src/main/java/com/example/demo/register/controller/bankCardController.java b/demo/src/main/java/com/example/demo/register/controller/bankCardController.java
index 11df70b..4f32b77 100644
--- a/demo/src/main/java/com/example/demo/register/controller/bankCardController.java
+++ b/demo/src/main/java/com/example/demo/register/controller/bankCardController.java
@@ -9,15 +9,11 @@ import com.example.demo.register.identify;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpSession;
 import java.io.IOException;
-import java.util.HashMap;
-import java.util.Map;
 
 @Controller
 public class bankCardController extends HttpServlet {