Jedis客户端使用——2

在前面的例子中加入事务

package com.redis.DAO;import java.util.HashMap;import java.util.Map;import java.util.Random;import redis.clients.jedis.Jedis;import redis.clients.jedis.Transaction;import com.redis.bean.UserBean;import com.redis.storage.RedisPool;public class UserDAO {private static final String U_UID = "uid";private static final String U_KEY = "gen_sn";private static final String U_NAME = "name";private static final String U_PROFILE_PRE = "pr:";public UserBean getUserFromRedis(String genSN) throws Exception {UserBean userBean = null;Jedis jedis = null;try {jedis = RedisPool.getInstance().getConnection();Map<String, String> userProfile = null;userProfile = jedis.hgetAll(U_PROFILE_PRE + genSN);if (null != userProfile && userProfile.size() != 0) {userBean = new UserBean();userBean.setUid(Long.parseLong(userProfile.get(U_UID)));userBean.setKey(userProfile.get(U_KEY));userBean.setName(userProfile.get(U_NAME));}} catch (NumberFormatException e) {throw new Exception(e);} finally {RedisPool.getInstance().releaseConnetion(jedis);}return userBean;}@SuppressWarnings("null")public void addUserIntoRedis(UserBean userBean) throws Exception {Jedis jedis = null;Transaction transaction=null;try {jedis = RedisPool.getInstance().getConnection();transaction = jedis.multi();HashMap<String, String> profileMap = new HashMap<String, String>();profileMap.put(U_UID, Long.toString(userBean.getUid()));if (userBean.getKey() != null) {profileMap.put(U_KEY, userBean.getKey());}if (userBean.getName() != null) {profileMap.put(U_NAME, userBean.getName());}// 放入整个maptransaction.hmset(U_PROFILE_PRE + userBean.getKey(), profileMap);//50%几率抛异常Random r=new Random();int i=r.nextInt(2);if(i==0) {String sss=null;System.out.println(sss.length());}transaction.exec();} catch (Exception e) {transaction.discard(); throw new Exception(e);} finally {RedisPool.getInstance().releaseConnetion(jedis);}}}

 

package com.redis.service;import com.redis.DAO.UserDAO;import com.redis.bean.UserBean;import com.redis.storage.RedisPool;public class Main {public static void main(String[] args) {RedisPool.getInstance().Init();UserDAO dao=new UserDAO();UserBean user=new UserBean();user.setKey("test"); //唯一标识user.setUid(1000);user.setName("小高");try {dao.addUserIntoRedis(user);} catch (Exception e) {System.out.println(user+" 插入失败");}System.out.println("-----------------------6-----------------");UserBean result=null;try {result = dao.getUserFromRedis("test");} catch (Exception e) {System.out.println(user+" 获取失败");}System.out.println(result.getUid());System.out.println(result.getName());}}