DROP TABLE IF EXISTS SPRING_SESSION_ATTRIBUTES;
DROP TABLE IF EXISTS SPRING_SESSION;
CREATE TABLE SPRING_SESSION (PRIMARY_ID CHAR(36) NOT NULL,SESSION_ID CHAR(36) NOT NULL,CREATION_TIME BIGINT NOT NULL,LAST_ACCESS_TIME BIGINT NOT NULL,MAX_INACTIVE_INTERVAL INT NOT NULL,EXPIRY_TIME BIGINT NOT NULL,PRINCIPAL_NAME VARCHAR(100),CONSTRAINT SPRING_SESSION_PK PRIMARY KEY (PRIMARY_ID)
) ENGINE=INNODB ROW_FORMAT=DYNAMIC;CREATE UNIQUE INDEX SPRING_SESSION_IX1 ON SPRING_SESSION (SESSION_ID);
CREATE INDEX SPRING_SESSION_IX2 ON SPRING_SESSION (EXPIRY_TIME);
CREATE INDEX SPRING_SESSION_IX3 ON SPRING_SESSION (PRINCIPAL_NAME);CREATE TABLE SPRING_SESSION_ATTRIBUTES (SESSION_PRIMARY_ID CHAR(36) NOT NULL,ATTRIBUTE_NAME VARCHAR(200) NOT NULL,ATTRIBUTE_BYTES BLOB NOT NULL,CONSTRAINT SPRING_SESSION_ATTRIBUTES_PK PRIMARY KEY (SESSION_PRIMARY_ID, ATTRIBUTE_NAME),CONSTRAINT SPRING_SESSION_ATTRIBUTES_FK FOREIGN KEY (SESSION_PRIMARY_ID) REFERENCES SPRING_SESSION(PRIMARY_ID) ON DELETE CASCADE
) ENGINE=INNODB ROW_FORMAT=DYNAMIC;

        <dependency><groupId>org.springframework.session</groupId><artifactId>spring-session-jdbc</artifactId></dependency>

spring.session.store-type=JDBC
spring.datasource.url=jdbc:mysql://localhost:3306/www?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false
spring.datasource.username=root
spring.datasource.password=wangwei456
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driverspring.session.jdbc.cleanup-cron=0 * * * * *

package com.example.demo;import javax.servlet.http.HttpSession;import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
@RequestMapping("/jdbc")
public class TestController {@RequestMapping("/welcome")public String welcome(HttpSession httpSession) {httpSession.setAttribute("hello", "world");return "hello world !";}
}

@Overridepublic void setAttribute(String attributeName, Object attributeValue) {boolean attributeExists = (this.delegate.getAttribute(attributeName) != null);boolean attributeRemoved = (attributeValue == null);if (!attributeExists && attributeRemoved) {return;}if (attributeExists) {if (attributeRemoved) {this.delta.merge(attributeName, DeltaValue.REMOVED, (oldDeltaValue,deltaValue) -> (oldDeltaValue == DeltaValue.ADDED) ? null: deltaValue);}else {this.delta.merge(attributeName, DeltaValue.UPDATED,(oldDeltaValue,deltaValue) -> (oldDeltaValue == DeltaValue.ADDED)? oldDeltaValue: deltaValue);}}else {this.delta.merge(attributeName, DeltaValue.ADDED,(oldDeltaValue, deltaValue) -> (oldDeltaValue == DeltaValue.ADDED)? oldDeltaValue: DeltaValue.UPDATED);}this.delegate.setAttribute(attributeName, value(attributeValue));if (PRINCIPAL_NAME_INDEX_NAME.equals(attributeName) ||SPRING_SECURITY_CONTEXT.equals(attributeName)) {this.changed = true;}}

        JdbcSession() {this.delegate = new MapSession();this.isNew = true;this.primaryKey = UUID.randomUUID().toString();}

    /*** Creates a new instance with a secure randomly generated identifier.*/public MapSession() {this(generateId());}

    private static String generateId() {return UUID.randomUUID().toString();}

    @Overridepublic List<String> readCookieValues(HttpServletRequest request) {Cookie[] cookies = request.getCookies();List<String> matchingCookieValues = new ArrayList<>();if (cookies != null) {for (Cookie cookie : cookies) {if (this.cookieName.equals(cookie.getName())) {String sessionId = (this.useBase64Encoding? base64Decode(cookie.getValue()): cookie.getValue());if (sessionId == null) {continue;}if (this.jvmRoute != null && sessionId.endsWith(this.jvmRoute)) {sessionId = sessionId.substring(0,sessionId.length() - this.jvmRoute.length());}matchingCookieValues.add(sessionId);}}}return matchingCookieValues;}