<properties>

    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

    <maven.compiler.source>1.7</maven.compiler.source>

    <maven.compiler.target>1.7</maven.compiler.target>

    <!--servlet  -->

    <servlet.version>4.0.0</servlet.version>

    <!--mysql-->

    <mysql.version>5.1.44</mysql.version>

    <!--6.jstl+standard  -->

    <jstl.version>1.2</jstl.version>

    <standard.version>1.1.2</standard.version>

    <!--7.tomcat-jsp-api  -->

    <tomcat.jsp.version>8.0.46</tomcat.jsp.version>

    <!--jackson-->

    <jackson.version>2.9.3</jackson.version>

  </properties>

  <dependencies>

    <dependency>

      <groupId>junit</groupId>

      <artifactId>junit</artifactId>

      <version>4.12</version>

      <scope>test</scope>

    </dependency>

    <dependency>

      <groupId>redis.clients</groupId>

      <artifactId>jedis</artifactId>

      <version>2.9.0</version>

    </dependency>

    <!--servlet  -->

    <dependency>

      <groupId>javax.servlet</groupId>

      <artifactId>javax.servlet-api</artifactId>

      <version>${servlet.version}</version>

      <scope>provided</scope>

    </dependency>

    <!--6.jstl+standard  -->

    <!-- https://mvnrepository.com/artifact/jstl/jstl -->

    <dependency>

      <groupId>jstl</groupId>

      <artifactId>jstl</artifactId>

      <version>${jstl.version}</version>

    </dependency>

    <!-- https://mvnrepository.com/artifact/taglibs/standard -->

    <dependency>

      <groupId>taglibs</groupId>

      <artifactId>standard</artifactId>

      <version>${standard.version}</version>

    </dependency>

    <!--7.tomcat-jsp-api  -->

    <dependency>

      <groupId>org.apache.tomcat</groupId>

      <artifactId>tomcat-jsp-api</artifactId>

      <version>${tomcat.jsp.version}</version>

    </dependency>

    <dependency>

      <groupId>com.fasterxml.jackson.core</groupId>

      <artifactId>jackson-annotations</artifactId>

      <version>${jackson.version}</version>

    </dependency>

    <!-- https://mvnrepository.com/artifact/dom4j/dom4j -->

    <dependency>

      <groupId>dom4j</groupId>

      <artifactId>dom4j</artifactId>

      <version>1.6.1</version>

    </dependency>

    <!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils -->

    <dependency>

      <groupId>commons-beanutils</groupId>

      <artifactId>commons-beanutils</artifactId>

      <version>1.9.4</version>

    </dependency>

    <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->

    <dependency>

      <groupId>commons-logging</groupId>

      <artifactId>commons-logging</artifactId>

      <version>1.2</version>

    </dependency>

package com.hmc.demo;

import redis.clients.jedis.Jedis;

import redis.clients.jedis.ScanResult;

import redis.clients.jedis.Tuple;

import java.util.List;

/**

 * @author胡明财

 * @site www.xiaomage.com

 * @company xxx公司

 * @create  2019-10-13 10:57

 */

public class Demo {

    public static void main(String[] args) {

        Jedis Jedis = new Jedis("192.168.197.128", 6379);

        Jedis.auth("123456");

         System.out.println(Jedis.ping());

        //选择数据库

        String select = Jedis.select(0);

       // Jedis.del("booklist");

        //Strng 字符串

        //set

        //Jedis.set("name","张三");

        //get获取

        System.out.println(Jedis.get("booklist"));

        //type获取类型

        //System.out.println(Jedis.type("name"));

        //del删除

        //Jedis.del("name");

        //expire设置超时时间

        //Jedis.expire("name",10);

        //hash(哈希)

//        Jedis.hset("student","name","李四");

//        Jedis.hset("student","age","13");

//        Jedis.hset("student","addres","长沙");

//        System.out.println(Jedis.hget("student", "name"));

        //list列表

//        Jedis.lpush("names","张三","李四","王五");

//        Long names = Jedis.llen("names");

//        for (int i=0;i<names;i++){

        //从左到右

        //     System.out.println(Jedis.lpop("names"));

        //从左到右

        //System.out.println(Jedis.rpop("names"));

   // }

        //set集合

       // Jedis.sadd("username","admin","zs","ls");

//        ScanResult<String> username = Jedis.sscan("username", 0);

//        List<String> result = username.getResult();

//        for (String s : result) {

//            System.out.println(s);

//        }

        //zset有序集合

//        Jedis.zadd("sex",70,"男");

//        Jedis.zadd("sex",80,"女");

//        Jedis.zadd("sex",90,"不男不女");

//        ScanResult<Tuple> zscan = Jedis.zscan("sex", 0);

//        List<Tuple> result = zscan.getResult();

//        for (Tuple tuple : result) {

//            System.out.println("sex="+tuple.getElement()+",score="+tuple.getScore());

//

//        }

    }

}

  public String list(HttpServletRequest request,HttpServletResponse response) throws Exception {

         //建立连接

          Jedis jedis = new Jedis("192.168.197.128", 6379);

          jedis.auth("123456");

           //获取缓存数据

            String booklist = jedis.get("booklist");

            if(booklist==null || "".equals(booklist)){

                 List<Book> list = this.bookdao.list(book, null);

                 System.out.println(list);

                 jedis.set("booklist",list.toString());

                 request.setAttribute("booklist", list);

                 return "list";

            }

            else {

                //[{"bid":33,"bname":"圣墟第33章","price":33.0}

                System.out.println(booklist);

                request.setAttribute("booklist", booklist);

                return "list";

            }

     }