简单mongodb实现session共享

pom依赖

		<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>

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

yml配置

spring:
  data:
    mongodb:
      uri: mongodb://xx.xx.xx:27018/testmongo
server:
  port: 9001

实现

package com.sunreal.mongosession;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.session.data.mongo.JdkMongoSessionConverter;
import org.springframework.session.data.mongo.config.annotation.web.http.EnableMongoHttpSession;

import java.time.Duration;

/**
 * @author lkz
 * @description 默认保存在sessions的集合中，过期时间1800秒
 * @date 2021/1/28 14:36
 */
@Configuration
@EnableMongoHttpSession(maxInactiveIntervalInSeconds = 1200, collectionName = "mongo_session")
public class HttpSessionConfig {

	/**
	 * 将session属性映射二进制持久化到mongo中
	 * @return
	 */
	@Bean
	public JdkMongoSessionConverter jdkMongoSessionConverter() {
		return new JdkMongoSessionConverter(Duration.ofMinutes(30));
	}
}

package com.sunreal.demo;

import com.sunreal.mongosession.SessionUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpSession;

/**
 * @author lkz
 * @description
 * @date 2021/1/28 14:40
 */
@RequestMapping("/demo")
@RestController
public class DemoController {

	@PostMapping("/login")
	public String login(HttpSession session, @RequestBody User user) {
		session.setAttribute("user", user);
		return "login success";
	}

	@GetMapping("/findInfo")
	public User findInfo(HttpSession session) {
		return SessionUtils.getMongoSession(session, User.class, "user");
	}

	@PostMapping("/logout")
	public String logout(HttpSession session) {
		session.invalidate();
		return "logout success";
	}
}

@Data
public class User implements Serializable {
	private String name;
	private String password;
	@JsonFormat(timezone = "GMT+8", pattern = "yyyyMMdd HH:mm:ss")
	private Date date;
}

public class SessionUtils {

	static Boolean DOMONGOTRACE = true;

	public static <T> T getMongoSession(HttpSession session, Class<?> t) {
		return getMongoSession(session,t,null);
	}
	/**
	 *
	 * @param session - httpsession
	 * @param t - xxx.class
	 * @param className - 注意全字母大写,session的key理论上装载以后就要全部大写
	 * @return
	 */
	@SuppressWarnings("unchecked")
	public static <T> T getMongoSession(HttpSession session,Class<?> t,String className) {
		className = className == null? t.getSimpleName().toUpperCase() : className;
		if(DOMONGOTRACE) {
			Gson gson = new GsonBuilder().registerTypeAdapter(Date.class, new DateDeserializer()).setDateFormat(DateFormat.LONG).create();
			return (T) gson.fromJson(gson.toJson(session.getAttribute(className)), t);
		}else {
			return (T) session.getAttribute(className);
		}

	}
}

public class DateDeserializer implements JsonDeserializer<Date> {
	@Override
	public Date deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
		return new java.util.Date(json.getAsJsonPrimitive().getAsLong());
	}
}