findAllCity();
+
+ /**
+ * 根据城市 ID，获取城市信息
+ *
+ * @param id
+ * @return
+ */
+ City findById(@Param("id") Long id);
+
+ Long saveCity(City city);
+
+ Long updateCity(City city);
+
+ Long deleteCity(Long id);
+}
diff --git a/springboot-mybatis-redis/src/main/java/org/spring/springboot/domain/City.java b/springboot-mybatis-redis/src/main/java/org/spring/springboot/domain/City.java
new file mode 100644
index 0000000..ed2e6e7
--- /dev/null
+++ b/springboot-mybatis-redis/src/main/java/org/spring/springboot/domain/City.java
@@ -0,0 +1,75 @@
+package org.spring.springboot.domain;
+
+import java.io.Serializable;
+
+/**
+ * 城市实体类
+ *
+ * Created by bysocket on 07/02/2017.
+ */
+public class City implements Serializable {
+
+ private static final long serialVersionUID = -1L;
+
+ /**
+ * 城市编号
+ */
+ private Long id;
+
+ /**
+ * 省份编号
+ */
+ private Long provinceId;
+
+ /**
+ * 城市名称
+ */
+ private String cityName;
+
+ /**
+ * 描述
+ */
+ private String description;
+
+ public Long getId() {
+ return id;
+ }
+
+ public void setId(Long id) {
+ this.id = id;
+ }
+
+ public Long getProvinceId() {
+ return provinceId;
+ }
+
+ public void setProvinceId(Long provinceId) {
+ this.provinceId = provinceId;
+ }
+
+ public String getCityName() {
+ return cityName;
+ }
+
+ public void setCityName(String cityName) {
+ this.cityName = cityName;
+ }
+
+ public String getDescription() {
+ return description;
+ }
+
+ public void setDescription(String description) {
+ this.description = description;
+ }
+
+ @Override
+ public String toString() {
+ return "City{" +
+ "id=" + id +
+ ", provinceId=" + provinceId +
+ ", cityName='" + cityName + '\'' +
+ ", description='" + description + '\'' +
+ '}';
+ }
+}
diff --git a/springboot-mybatis-redis/src/main/java/org/spring/springboot/service/CityService.java b/springboot-mybatis-redis/src/main/java/org/spring/springboot/service/CityService.java
new file mode 100644
index 0000000..8d5dcd0
--- /dev/null
+++ b/springboot-mybatis-redis/src/main/java/org/spring/springboot/service/CityService.java
@@ -0,0 +1,44 @@
+package org.spring.springboot.service;
+
+import org.spring.springboot.domain.City;
+
+import java.util.List;
+
+/**
+ * 城市业务逻辑接口类
+ *
+ * Created by bysocket on 07/02/2017.
+ */
+public interface CityService {
+ /**
+ * 根据城市 ID,查询城市信息
+ *
+ * @param id
+ * @return
+ */
+ City findCityById(Long id);
+
+ /**
+ * 新增城市信息
+ *
+ * @param city
+ * @return
+ */
+ Long saveCity(City city);
+
+ /**
+ * 更新城市信息
+ *
+ * @param city
+ * @return
+ */
+ Long updateCity(City city);
+
+ /**
+ * 根据城市 ID,删除城市信息
+ *
+ * @param id
+ * @return
+ */
+ Long deleteCity(Long id);
+}
diff --git a/springboot-mybatis-redis/src/main/java/org/spring/springboot/service/impl/CityServiceImpl.java b/springboot-mybatis-redis/src/main/java/org/spring/springboot/service/impl/CityServiceImpl.java
new file mode 100644
index 0000000..3f0bb41
--- /dev/null
+++ b/springboot-mybatis-redis/src/main/java/org/spring/springboot/service/impl/CityServiceImpl.java
@@ -0,0 +1,104 @@
+package org.spring.springboot.service.impl;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.spring.springboot.dao.CityDao;
+import org.spring.springboot.domain.City;
+import org.spring.springboot.service.CityService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.core.StringRedisTemplate;
+import org.springframework.data.redis.core.ValueOperations;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * 城市业务逻辑实现类
+ *
+ * Created by bysocket on 07/02/2017.
+ */
+@Service
+public class CityServiceImpl implements CityService {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(CityServiceImpl.class);
+
+ @Autowired
+ private CityDao cityDao;
+
+ @Autowired
+ private RedisTemplate redisTemplate;
+
+ /**
+ * 获取城市逻辑：
+ * 如果缓存存在，从缓存中获取城市信息
+ * 如果缓存不存在，从 DB 中获取城市信息，然后插入缓存
+ */
+ public City findCityById(Long id) {
+ // 从缓存中获取城市信息
+ String key = "city_" + id;
+ ValueOperations operations = redisTemplate.opsForValue();
+
+ // 缓存存在
+ boolean hasKey = redisTemplate.hasKey(key);
+ if (hasKey) {
+ City city = operations.get(key);
+
+ LOGGER.info("CityServiceImpl.findCityById() : 从缓存中获取了城市 >> " + city.toString());
+ return city;
+ }
+
+ // 从 DB 中获取城市信息
+ City city = cityDao.findById(id);
+
+ // 插入缓存
+ operations.set(key, city, 10, TimeUnit.SECONDS);
+ LOGGER.info("CityServiceImpl.findCityById() : 城市插入缓存 >> " + city.toString());
+
+ return city;
+ }
+
+ @Override
+ public Long saveCity(City city) {
+ return cityDao.saveCity(city);
+ }
+
+ /**
+ * 更新城市逻辑：
+ * 如果缓存存在，删除
+ * 如果缓存不存在，不操作
+ */
+ @Override
+ public Long updateCity(City city) {
+ Long ret = cityDao.updateCity(city);
+
+ // 缓存存在，删除缓存
+ String key = "city_" + city.getId();
+ boolean hasKey = redisTemplate.hasKey(key);
+ if (hasKey) {
+ redisTemplate.delete(key);
+
+ LOGGER.info("CityServiceImpl.updateCity() : 从缓存中删除城市 >> " + city.toString());
+ }
+
+ return ret;
+ }
+
+ @Override
+ public Long deleteCity(Long id) {
+
+ Long ret = cityDao.deleteCity(id);
+
+ // 缓存存在，删除缓存
+ String key = "city_" + id;
+ boolean hasKey = redisTemplate.hasKey(key);
+ if (hasKey) {
+ redisTemplate.delete(key);
+
+ LOGGER.info("CityServiceImpl.deleteCity() : 从缓存中删除城市 ID >> " + id);
+ }
+ return ret;
+ }
+
+}
diff --git a/springboot-mybatis-redis/src/main/resources/application.properties b/springboot-mybatis-redis/src/main/resources/application.properties
new file mode 100644
index 0000000..209b80c
--- /dev/null
+++ b/springboot-mybatis-redis/src/main/resources/application.properties
@@ -0,0 +1,29 @@
+## 数据源配置
+spring.datasource.url=jdbc:mysql://localhost:3306/springbootdb?useUnicode=true&characterEncoding=utf8
+spring.datasource.username=root
+spring.datasource.password=123456
+spring.datasource.driver-class-name=com.mysql.jdbc.Driver
+
+## Mybatis 配置
+mybatis.typeAliasesPackage=org.spring.springboot.domain
+mybatis.mapperLocations=classpath:mapper/*.xml
+
+## Redis 配置
+## Redis数据库索引（默认为0）
+spring.redis.database=0
+## Redis服务器地址
+spring.redis.host=127.0.0.1
+## Redis服务器连接端口
+spring.redis.port=6379
+## Redis服务器连接密码（默认为空）
+spring.redis.password=
+## 连接池最大连接数（使用负值表示没有限制）
+spring.redis.pool.max-active=8
+## 连接池最大阻塞等待时间（使用负值表示没有限制）
+spring.redis.pool.max-wait=-1
+## 连接池中的最大空闲连接
+spring.redis.pool.max-idle=8
+## 连接池中的最小空闲连接
+spring.redis.pool.min-idle=0
+## 连接超时时间（毫秒）
+spring.redis.timeout=0
\ No newline at end of file
diff --git a/springboot-mybatis-redis/src/main/resources/mapper/CityMapper.xml b/springboot-mybatis-redis/src/main/resources/mapper/CityMapper.xml
new file mode 100644
index 0000000..47528bf
--- /dev/null
+++ b/springboot-mybatis-redis/src/main/resources/mapper/CityMapper.xml
@@ -0,0 +1,61 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+ id, province_id, city_name, description
+
+
+
+
+
+
+
+ insert into
+ city(id,province_id,city_name,description)
+ values
+ (#{id},#{provinceId},#{cityName},#{description})
+
+
+
+ update
+ city
+ set
+
+ province_id = #{provinceId},
+
+
+ city_name = #{cityName},
+
+
+ description = #{description}
+
+ where
+ id = #{id}
+
+
+
+ delete from
+ city
+ where
+ id = #{id}
+
+
+