java操作redis(二):存取对象操作

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前提，对象必须要序列化，即对象的实体类要实现序列化接口。

代码如下所示：

用户实体类:

=================UserEntity.java===============

package com.wx.entitys;import java.io.Serializable;public class UserEntity implements Serializable{private static final long serialVersionUID = 3660009371337848373L;private Integer userId;private String userName;private String passWord;private String email;public UserEntity() {}public UserEntity(Integer userId, String userName,                String passWord, String email) {super();this.userId = userId;this.userName = userName;this.passWord = passWord;this.email = email;}public Integer getUserId() {return userId;}public void setUserId(Integer userId) {this.userId = userId;}public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getPassWord() {return passWord;}public void setPassWord(String passWord) {this.passWord = passWord;}public String getEmail() {return email;}public void setEmail(String email) {this.email = email;}}

Redis工具类

=================RedisUtil.java===============

package com.wx.utils;import redis.clients.jedis.Jedis;public class RedisUtil {private static String ip="169.254.130.122";private static int port=6379;private static String passWord="test123";//把redis连接对象放到本地线程中private static ThreadLocal<Jedis> local=new ThreadLocal<Jedis>();private RedisUtil(){}//建立连接public static Jedis getConn(){//Redis对象        Jedis jedis =local.get();        try {if(jedis==null){//根据ip和端口号建立连接jedis=new Jedis(ip,port);//设置密码jedis.auth(passWord);local.set(jedis);}} catch (Exception e) {e.printStackTrace();}        return jedis;}//关闭连接public static void closeConn(){//从本地线程中获取Jedis jedis =local.get();if(jedis!=null){jedis.close();}local.set(null);}}

对象存取工具类

=================RedisObjUtil.java===============

package com.wx.utils;import java.io.*;import redis.clients.jedis.Jedis;public class RedisObjUtil {// 存对象public static void setObject(Jedis jedis, String key, Object obj) throws Exception {ObjectOutputStream oos = null;  //对象输出流ByteArrayOutputStream bos = null;  //内存缓冲流bos = new ByteArrayOutputStream();oos = new ObjectOutputStream(bos);oos.writeObject(obj); byte[] byt = bos.toByteArray();jedis.set(key.getBytes(), byt);bos.close();oos.close();}// 取对象public static Object getObject(Jedis jedis, String key) throws Exception {byte[] byt = jedis.get(key.getBytes());ObjectInputStream ois = null;  //对象输入流ByteArrayInputStream bis = null;   //内存缓冲流Object obj = null;bis = new ByteArrayInputStream(byt);ois = new ObjectInputStream(bis);obj = ois.readObject();bis.close();ois.close();return obj;}}

测试类

=================TestObjectOpt.java===============

package com.wx.test;import com.wx.entitys.UserEntity;import com.wx.utils.RedisObjUtil;import com.wx.utils.RedisUtil;import redis.clients.jedis.Jedis;public class TestObjectOpt {public static void main(String[] args) {Jedis jedis=RedisUtil.getConn();try {UserEntity user1=new UserEntity(110, "麻子", "123", "mazi@qq.com");RedisObjUtil.setObject(jedis, "user1", user1);UserEntity theUser=(UserEntity)RedisObjUtil.getObject(jedis, "user1");System.out.println(theUser.getUserName()+","+theUser.getEmail());} catch (Exception e) {e.printStackTrace();}finally{RedisUtil.closeConn();}}}

执行完毕后，发现对象已经正确的存到了服务器上

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