Spring与Mybatis基于注解整合Redis的方法

基于这段时间折腾redis遇到了各种问题，想着整理一下。本文主要介绍基于Spring+Mybatis以注解的形式整合Redis。废话少说，进入正题。

　　首先准备Redis，我下的是Windows版，下载后直接启动redis-server就行了，见下图：

一，先上jar包

二，创建实体类

package com.sl.user.vo;
import java.io.Serializable;
import com.fasterxml.jackson.databind.PropertyNamingStrategy;
import com.fasterxml.jackson.databind.annotation.JsonNaming;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
@JsonSerialize 
@JsonNaming(PropertyNamingStrategy.LowerCaseWithUnderscoresStrategy.class) 
public class UserVO implements Serializable{
private static final long serialVersionUID = 1L;
private int id;
private String username;
private String password;
private int age;
public UserVO(){
super(); 
}
public UserVO(int id, String username, String password, int age) {
super();
this.id = id;
this.username = username;
this.password = password;
this.age = age;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
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 int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return "UserVO [id=" + id + ", username=" + username + ", password="
+ password + ", age=" + age + "]";
}
}

三，dao接口

package com.sl.user.dao;
import com.sl.user.vo.UserVO;
public interface UserDao {
public void addUser(UserVO user);
public void deleteUser(UserVO user);
public void updateUser(UserVO user);
public UserVO getUserById(int id);
public UserVO getUser(int id);
}

四，UserMapper

 
 








insert into t_user(username,password,age) values(#{username},#{password},#{age})


delete * from t_user where id = #{id}


update t_user set
 username = #{username},
 password = #{password},
 age = #{age}
where 1=1
and id = #{id}


select * from t_user where id = #{id}


select username from t_user where id = #{id}

五，Service接口

package com.sl.user.service;
import com.sl.user.vo.UserVO;
public interface UserService {
public void addUser(UserVO user);
public void deleteUser(UserVO user);
public void updateUser(UserVO user);
public UserVO getUserById(int id);
public UserVO getUser(int id);
}

六，Service实现

package com.sl.user.service.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.sl.user.dao.UserDao;
import com.sl.user.service.UserService;
import com.sl.user.vo.UserVO;
@Service("userService")
@Transactional(propagation=Propagation.REQUIRED, rollbackFor=Exception.class) 
public class UserServiceImpl implements UserService{
@Autowired
private UserDao userDao;
@Override
@CacheEvict(value="User",key="addUser",allEntries=true) 
public void addUser(UserVO user) {
userDao.addUser(user);
}
@Override
@CacheEvict(value = {"getUser", "getUserById"}, allEntries = true) 
public void deleteUser(UserVO user) {
userDao.deleteUser(user);
}
@Override
@CacheEvict(value = {"getUser", "getUserById"}, allEntries = true) 
public void updateUser(UserVO user) {
userDao.updateUser(user);
}
@Override
@Cacheable(value="User",key="getUserById")
public UserVO getUserById(int id) {
return userDao.getUserById(id);
}
@Override
@Cacheable(value="User",key="'getUser'")
public UserVO getUser(int id) {
return userDao.getUser(id);
}
}

七，Ctrl层

package com.sl.user.web;
import java.util.HashMap;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.sl.user.service.UserService;
import com.sl.user.vo.UserVO;
@Controller
@RequestMapping("/userCtrl")
public class UserCtrl {
@Autowired
private UserService userService;
@RequestMapping("/addUser")
public void addUser(UserVO user){
userService.addUser(user);
}
@RequestMapping("/deleteUser")
public void deleteUser(UserVO user){
userService.deleteUser(user);
}
@RequestMapping("/updateUser")
public void updateUser(UserVO user){
userService.updateUser(user);
}
@ResponseBody
@RequestMapping("/getUserById")
public Map getUserById(UserVO user){
Map map = new HashMap();
map.put("msg",userService.getUserById(4));
return map;
}
@ResponseBody
@RequestMapping("/getUser")
public Map getUser(UserVO vo){
Map map = new HashMap();
Object user = userService.getUser(4);
map.put("msg",user.toString());
return map;
}
}

八，Redis关键类，用于CRUD操作

package com.sl.user.redis;
import java.io.ByteArrayInputStream; 
import java.io.ByteArrayOutputStream; 
import java.io.IOException; 
import java.io.ObjectInputStream; 
import java.io.ObjectOutputStream; 
import org.springframework.cache.Cache; 
import org.springframework.cache.support.SimpleValueWrapper; 
import org.springframework.dao.DataAccessException; 
import org.springframework.data.redis.connection.RedisConnection; 
import org.springframework.data.redis.core.RedisCallback; 
import org.springframework.data.redis.core.RedisTemplate;
public class RedisUtil implements Cache{
private RedisTemplate redisTemplate; 
private String name; 
public RedisTemplate getRedisTemplate() { 
return redisTemplate; 
} 
public void setRedisTemplate(RedisTemplate redisTemplate) { 
this.redisTemplate = redisTemplate; 
} 
public void setName(String name) { 
this.name = name; 
} 
@Override 
public String getName() { 
return this.name; 
} 
@Override 
public Object getNativeCache() { 
return this.redisTemplate; 
} 
/**
* 从缓存中获取key
*/
@Override 
public ValueWrapper get(Object key) { 
System.out.println("get key"); 
final String keyf = key.toString(); 
Object object = null; 
object = redisTemplate.execute(new RedisCallback