1.redis_demo Maven
ItemMapper.xml：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.redis.mapper.ItemMapper" >
<resultMap id="BaseResultMap" type="com.redis.model.Item" >
<!--
WARNING - @mbg.generated
-->
<id column="id" property="id" jdbcType="BIGINT" />
<result column="title" property="title" jdbcType="VARCHAR" />
<result column="sell_point" property="sellPoint" jdbcType="VARCHAR" />
<result column="price" property="price" jdbcType="BIGINT" />
<result column="num" property="num" jdbcType="INTEGER" />
<result column="barcode" property="barcode" jdbcType="VARCHAR" />
<result column="image" property="image" jdbcType="VARCHAR" />
<result column="cid" property="cid" jdbcType="BIGINT" />
<result column="status" property="status" jdbcType="TINYINT" />
<result column="created" property="created" jdbcType="TIMESTAMP" />
<result column="updated" property="updated" jdbcType="TIMESTAMP" />
</resultMap>
</mapper>
mybatis-config.xml：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- mybatis默认是没有开启延迟加载的 需要手动开启 -->
<settings>
<!-- 延迟加载 默认false -->
<setting name="lazyLoadingEnabled" value="true" />
<!-- 积极加载 默认true -->
<setting name="aggressiveLazyLoading" value="false" />
<!--开启缓存-->
<setting name="cacheEnabled" value="true"/>
</settings>
</configuration>
applicationContext-db.xml：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context" xmlns="http://www.springframework.org/schema/beans"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd"> <!--数据源配置 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
init-method="init" destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapping.xml文件，**表示迭代查找 -->
<property name="mapperLocations" value="classpath*:mapper/*Mapper.xml" />
<!--mybatis配置文件位置 -->
<property name="configLocation" value="classpath:mybatis/mybatis-config.xml" />
</bean> <!--扫描com.redis下的mapper接口 -->
<bean class="tk.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.redis" />
<!--使用mybatis通用mapper插件 -->
<property name="properties">
<value>
mappers=tk.mybatis.mapper.common.Mapper
</value>
</property>
</bean>
</beans>
applicationContext-redis.xml：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd"> <!-- 配置redis自带的连接池配置(jedisPool) -->
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<!-- 最大连接数 -->
<property name="maxTotal" value="30" />
<!-- 最大空闲连接数 -->
<property name="maxIdle" value="10" />
<!-- 每次释放连接的最大数目 -->
<property name="numTestsPerEvictionRun" value="1024" />
<!-- 释放连接的扫描间隔（毫秒） -->
<property name="timeBetweenEvictionRunsMillis" value="30000" />
<!-- 连接最小空闲时间 -->
<property name="minEvictableIdleTimeMillis" value="1800000" />
<!-- 连接空闲多久后释放, 当空闲时间>该值且空闲连接>最大空闲连接数时直接释放 -->
<property name="softMinEvictableIdleTimeMillis" value="10000" />
<!-- 获取连接时的最大等待毫秒数,小于零:阻塞不确定的时间,默认-1 -->
<property name="maxWaitMillis" value="1500" />
<!-- 在获取连接的时候检查有效性, 默认false -->
<property name="testOnBorrow" value="false" />
<!-- 在空闲时检查有效性, 默认false -->
<property name="testWhileIdle" value="true" />
<!-- 连接耗尽时是否阻塞, false报异常,ture阻塞直到超时, 默认true -->
<property name="blockWhenExhausted" value="false" />
</bean> <!-- redis数据库集群连接池配置 -->
<bean id="jedisCluster" class="redis.clients.jedis.JedisCluster">
<!-- 首先要把连接池的配置信息引入 -->
<constructor-arg name="poolConfig" ref="jedisPoolConfig" />
<!-- 然后需要配置集群中各个节点信息 eg:因为redis最少需要6台服务器(称之为6个节点) -->
<constructor-arg name="nodes">
<set>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="${redis.host1}" /><!--
每一台节点的ip地址 -->
<constructor-arg name="port" value="${redis.port1}" /><!--
每一台redis节点的端口号 -->
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="${redis.host2}" />
<constructor-arg name="port" value="${redis.port2}" />
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="${redis.host3}" />
<constructor-arg name="port" value="${redis.port3}" />
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="${redis.host4}" />
<constructor-arg name="port" value="${redis.port4}" />
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="${redis.host5}" />
<constructor-arg name="port" value="${redis.port5}" />
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="${redis.host6}" />
<constructor-arg name="port" value="${redis.port6}" />
</bean>
</set>
</constructor-arg>
</bean> <bean id="redisService" class="com.redis.service.impl.RedisServiceImpl">
<property name="jedisCluster" ref="jedisCluster"></property>
</bean>
</beans>
applicationContext-tx.xml：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context" xmlns="http://www.springframework.org/schema/beans"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 事务详情 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- read-only="true" 该事务为只读事务 -->
<tx:method name="select*" read-only="true" />
<tx:method name="find*" read-only="true" />
<tx:method name="get*" read-only="true" />
<tx:method name="query*" read-only="true" />
<tx:method name="*" />
</tx:attributes>
</tx:advice>
<!--支持基于注解的aspectj -->
<aop:aspectj-autoproxy /> <!--aop编程，切入点表达式 确定增强的连接器，从而获得切入点
为什么aop这里切service而不是controller？
-->
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* com.redis.service..*.*(..)))" />
</aop:config>
</beans>
applicationContext-mvc.xml：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- 自动扫描且只扫描@Controller 扫描的是controller -->
<context:component-scan base-package="com.redis.controller" /> <!-- DispatcherServlet是springmvc的入口类 -->
<!-- 当在web.xml 中 DispatcherServlet使用 <url-pattern>/</url-pattern> 映射时，能映射静态资源 -->
<!-- 除了动态资源以后，其他都不拦截(js,css,pictures,font...) -->
<mvc:default-servlet-handler /> <!-- 可用在springmvc.xml配置文件中使用<mvc:annotation-driven>替代注解处理器和适配器的配置。 -->
<mvc:annotation-driven>
<mvc:message-converters>
<!-- springmvc自带的中文编码转换器 -->
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg index="0" value="UTF-8" />
</bean>
<!-- json的格式化 -->
<bean
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="prettyPrint" value="true" />
</bean>
</mvc:message-converters>
</mvc:annotation-driven> </beans>
application.properties：
#mysql connector
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test
jdbc.username=root
jdbc.password=root #redis cluster connector
redis.host1=192.168.1.186
redis.port1=6380 redis.host2=192.168.1.186
redis.port2=6381 redis.host3=192.168.1.186
redis.port3=6382 redis.host4=192.168.1.186
redis.port4=6383 redis.host5=192.168.1.186
redis.port5=6384 redis.host6=192.168.1.186
redis.port6=6385 #item key
ITEM_INFO_KEY=ITEM_INFO_KEY
applicationContext.xml：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context" xmlns="http://www.springframework.org/schema/beans"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 首先加载application.properties配置文件 -->
<context:property-placeholder location="classpath:application.properties" /> <!-- spring扫描service -->
<context:component-scan base-package="com.redis.service" /> <!-- 分离核心配置，把spring和springmvc以及mybatis的配置单独成立一个xml文件，在applicationContext中导入 -->
<!-- 导入springmvc配置文件 -->
<import resource="springmvc/applicationContext-mvc.xml"/>
<!-- 导入jdbc配置文件 -->
<import resource="spring/applicationContext-db.xml"/>
<!-- 导入事务管理的配置文件 -->
<import resource="spring/applicationContext-tx.xml"/>
<!-- 导入redis集群的配置信息 -->
<import resource="spring/applicationContext-redis.xml"/> </beans>
web.xml：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<!--spring入口文件的配置 -->
<!-- 确定配置文件位置 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!-- 配置spring 监听器，加载xml配置文件 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 解决POST请求的中文乱码 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- DispatcherServlet：前端控制器 配置前端控制器servlet -->
<servlet>
<servlet-name>redis_demo</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--加载前端控制器配置文件 上下文配置位置 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc/applicationContext-mvc.xml</param-value>
</init-param>
<!-- 表示随WEB服务器启动 -->
<load-on-startup>1</load-on-startup>
</servlet> <servlet-mapping>
<servlet-name>redis_demo</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
pom.xml：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.redis</groupId>
<artifactId>redis_demo</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>redis_demo Maven Webapp</name>
<url>http://maven.apache.org</url> <!-- 统一配置 -->
<properties>
<!-- junit begin -->
<junit.version>4.12</junit.version>
<!-- junit end --> <!-- spring begin -->
<spring.version>4.3.4.RELEASE</spring.version>
<!-- spring end --> <!-- json begin -->
<jackson.version>2.8.1</jackson.version>
<fastjson.version>1.2.17</fastjson.version>
<!-- json end --> <!-- servlet jsp jstl begin -->
<servlet-api.version>3.0.1</servlet-api.version>
<jsp-api.version>2.0</jsp-api.version>
<jstl.version>1.2</jstl.version>
<!-- servlet jsp jstl end --> <!-- mysql begin -->
<mysql.version>5.1.40</mysql.version>
<!-- mysql begin --> <!-- druid begin -->
<druid.version>1.0.26</druid.version>
<!-- druid end --> <!-- mybatis begin -->
<mybatis.version>3.3.0</mybatis.version>
<mybatis.spring.version>1.2.3</mybatis.spring.version>
<mybatis.paginator.version>1.2.15</mybatis.paginator.version>
<mybatis.mapper.version>3.3.9</mybatis.mapper.version>
<!-- mybatis end --> <!-- ehcache begin -->
<ehcache.version>2.10.3</ehcache.version>
<!-- ehcache end --> <!-- redis begin -->
<jedis.version>2.9.0</jedis.version>
<spring-data-redis.version>1.7.2.RELEASE</spring-data-redis.version>
<!-- redis end --> </properties> <dependencies>
<!-- 所需要的jar包 -->
<!-- junit start -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- junit end --> <!--spring start -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!--spring end --> <!--json start -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency> <dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency> <dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency> <dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>${fastjson.version}</version>
</dependency>
<!--json end --> <!-- servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet-api.version}</version>
<scope>provided</scope>
</dependency> <!-- jsp -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>${jsp-api.version}</version>
<scope>provided</scope>
</dependency> <!-- jstl -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
<scope>runtime</scope>
</dependency> <!-- database begin -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
</dependency>
<!-- database end --> <!-- mybatis plugins begin -->
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper</artifactId>
<version>${mybatis.mapper.version}</version>
</dependency>
<!-- mybatis plugins end --> <!--ehcache 缓存配置 -->
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
<version>${ehcache.version}</version>
</dependency> <!-- redis begin -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>${jedis.version}</version>
</dependency> <dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>${spring-data-redis.version}</version>
</dependency>
<!-- redis end --> </dependencies>
<build>
<finalName>redis_demo</finalName>
</build>
</project>
RedisDemoController.java：
package com.redis.controller; import java.util.HashMap;
import java.util.Map; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController; import com.redis.service.IRedisService;
import com.redis.service.RedisDemoService; @RestController
@RequestMapping("/redis")
public class RedisDemoController { @Autowired
private RedisDemoService redisDemoService;
@Autowired
private IRedisService redisService; @RequestMapping(value="/demo",method=RequestMethod.GET)
public String demo() {
// Map<String, Object> resultMap = new HashMap<String, Object>();
// // 调用service
// String result = redisDemoService.demoService();
// if(result != null && "ok".equals(result.toLowerCase())) {
// resultMap.put("status", 200);
// } else {
// resultMap.put("status", 500);
// }
// return JSONUtil.toJSONString(resultMap); return redisDemoService.findAllItems(redisService);
} }
ItemMapper.java：
package com.redis.mapper; import com.redis.model.Item;
import tk.mybatis.mapper.common.Mapper; public interface ItemMapper extends Mapper<Item> {
}
Item.java：
package com.redis.model; import java.util.Date;
import javax.persistence.*; @Table(name = "ego_item")
public class Item {
/**
* 商品id，同时也是商品编号
*/
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id; /**
* 商品标题
*/
private String title; /**
* 商品卖点
*/
@Column(name = "sell_point")
private String sellPoint; /**
* 商品价格，单位为：分
*/
private Long price; /**
* 库存数量
*/
private Integer num; /**
* 商品条形码
*/
private String barcode; /**
* 商品图片
*/
private String image; /**
* 所属类目，叶子类目
*/
private Long cid; /**
* 商品状态，1-正常，2-下架，3-删除
*/
private Byte status; /**
* 创建时间
*/
private Date created; /**
* 更新时间
*/
private Date updated; /**
* 获取商品id，同时也是商品编号
*
* @return id - 商品id，同时也是商品编号
*/
public Long getId() {
return id;
} /**
* 设置商品id，同时也是商品编号
*
* @param id 商品id，同时也是商品编号
*/
public void setId(Long id) {
this.id = id;
} /**
* 获取商品标题
*
* @return title - 商品标题
*/
public String getTitle() {
return title;
} /**
* 设置商品标题
*
* @param title 商品标题
*/
public void setTitle(String title) {
this.title = title == null ? null : title.trim();
} /**
* 获取商品卖点
*
* @return sell_point - 商品卖点
*/
public String getSellPoint() {
return sellPoint;
} /**
* 设置商品卖点
*
* @param sellPoint 商品卖点
*/
public void setSellPoint(String sellPoint) {
this.sellPoint = sellPoint == null ? null : sellPoint.trim();
} /**
* 获取商品价格，单位为：分
*
* @return price - 商品价格，单位为：分
*/
public Long getPrice() {
return price;
} /**
* 设置商品价格，单位为：分
*
* @param price 商品价格，单位为：分
*/
public void setPrice(Long price) {
this.price = price;
} /**
* 获取库存数量
*
* @return num - 库存数量
*/
public Integer getNum() {
return num;
} /**
* 设置库存数量
*
* @param num 库存数量
*/
public void setNum(Integer num) {
this.num = num;
} /**
* 获取商品条形码
*
* @return barcode - 商品条形码
*/
public String getBarcode() {
return barcode;
} /**
* 设置商品条形码
*
* @param barcode 商品条形码
*/
public void setBarcode(String barcode) {
this.barcode = barcode == null ? null : barcode.trim();
} /**
* 获取商品图片
*
* @return image - 商品图片
*/
public String getImage() {
return image;
} /**
* 设置商品图片
*
* @param image 商品图片
*/
public void setImage(String image) {
this.image = image == null ? null : image.trim();
} /**
* 获取所属类目，叶子类目
*
* @return cid - 所属类目，叶子类目
*/
public Long getCid() {
return cid;
} /**
* 设置所属类目，叶子类目
*
* @param cid 所属类目，叶子类目
*/
public void setCid(Long cid) {
this.cid = cid;
} /**
* 获取商品状态，1-正常，2-下架，3-删除
*
* @return status - 商品状态，1-正常，2-下架，3-删除
*/
public Byte getStatus() {
return status;
} /**
* 设置商品状态，1-正常，2-下架，3-删除
*
* @param status 商品状态，1-正常，2-下架，3-删除
*/
public void setStatus(Byte status) {
this.status = status;
} /**
* 获取创建时间
*
* @return created - 创建时间
*/
public Date getCreated() {
return created;
} /**
* 设置创建时间
*
* @param created 创建时间
*/
public void setCreated(Date created) {
this.created = created;
} /**
* 获取更新时间
*
* @return updated - 更新时间
*/
public Date getUpdated() {
return updated;
} /**
* 设置更新时间
*
* @param updated 更新时间
*/
public void setUpdated(Date updated) {
this.updated = updated;
}
}
RedisServiceImpl.java：
package com.redis.service.impl;
import com.redis.service.IRedisService;
import redis.clients.jedis.JedisCluster;
public class RedisServiceImpl implements IRedisService {
private JedisCluster jedisCluster;
public void setJedisCluster(JedisCluster jedisCluster) {
this.jedisCluster = jedisCluster;
}
@Override
public String set(String key, String value) {
return jedisCluster.set(key, value);
}
@Override
public String get(String key) {
return jedisCluster.get(key);
}
@Override
public Long hset(String key, String field, String value) {
return null;
}
@Override
public String hget(String key, String field) {
return null;
}
@Override
public Long del(String... keys) {
return null;
}
@Override
public Long hdel(String key, String... fields) {
return null;
}
@Override
public Boolean exists(String key) {
return null;
}
@Override
public Long expire(String key, int seconds) {
return null;
}
@Override
public Long ttl(String key) {
return null;
}
@Override
public Long incr(String key) {
return null;
}
}
IRedisService.java：
package com.redis.service;
public interface IRedisService {
/**
* 设置指定 key 的值
*
* @param key
* @param value
* @return
*/
String set(String key, String value);
/**
* 获取指定 key 的值
*
* @param key
* @return
*/
String get(String key);
/**
* 设置存储在哈希表中指定字段的值
*
* @param key
* @param field
* @param value
* @return
*/
Long hset(String key, String field, String value);
/**
* 获取存储在哈希表中指定字段的值
*
* @param key
* @param field
* @return
*/
String hget(String key, String field);
/**
* 删除 key和对应的值
*
* @param keys
* @return
*/
Long del(String... keys);
/**
* 删除key的哈希表字段
*
* @param key
* @param fields
* @return
*/
Long hdel(String key, String... fields);
/**
* 检查给定 key 是否存在
*
* @param key
* @return
*/
Boolean exists(String key);
/**
* 为给定 key 设置过期时间
*
* @param key
* @param seconds
* @return
*/
Long expire(String key, int seconds);
/**
* 以秒为单位返回 key 的剩余过期时间
*
* @param key
* @return
*/
Long ttl(String key);
/**
* 自增
* @param key
* @return
*/
Long incr(String key);
}
RedisDemoService.java：
package com.redis.service; import java.util.HashMap;
import java.util.Map; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import com.redis.mapper.ItemMapper;
import com.redis.utils.JSONUtil; @Service
public class RedisDemoService { @Value("${ITEM_INFO_KEY}")
private String itemInfoKey; @Autowired
private ItemMapper itemMapper;
// @Autowired
// private IRedisService redisService; public String demoService() {
String itemJson = JSONUtil.toJSONString(itemMapper.selectAll());
String result = null;
if(itemJson.isEmpty()) {
return result;
}
//result = redisService.set(itemInfoKey, itemJson);// 如果存储生成，返回OK
return result;
} // findAllItems这个方法需要向前端项目传递商品数据
public String findAllItems(IRedisService redisService) {
// 如果缓存中已经有itemInfoKey的数据了，直接就从缓存中取，不再查询数据库，而且也不需要存入redis
Map<Integer, Object> resultMap = new HashMap<Integer, Object>();
String itemJsons = "";
// 从redis数据库中查询数据
itemJsons = redisService.get(itemInfoKey);
// 如果redis中没有该数据
if(itemJsons.isEmpty()) {
// 从mysql中查询出需要的数据
itemJsons = JSONUtil.toJSONString(itemMapper.selectAll());
// 存入redis集群中
String result = redisService.set(itemInfoKey, itemJsons); if("ok".equals(result.toLowerCase())) {
resultMap.put(200, itemJsons);
} else {
resultMap.put(500, null);
}
} else {
resultMap.put(200, itemJsons);
}
return JSONUtil.toJSONString(resultMap);
}
}
JSONUtil.java：
package com.redis.utils; import java.util.List;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper; public class JSONUtil { // 定义jackson对象
private static final ObjectMapper mapper = new ObjectMapper();
/**
* 将对象转换成json字符串
* @param data
* @return
*/
public static String toJSONString(Object data) {
try {
String string = mapper.writeValueAsString(data);
return string;
} catch (JsonProcessingException e) {
e.printStackTrace();
}
return null;
} /**
* 将json结果集转化为对象
* @param jsonData
* @param beanType
* @return
*/
public static <T> T parseObject(String jsonData, Class<T> beanType) {
try {
T t = mapper.readValue(jsonData, beanType);
return t;
} catch (Exception e) {
e.printStackTrace();
}
return null;
} /**
* 将json数据转换成list
* @param jsonData
* @param beanType
* @return
*/
public static <T> List<T> parseArray(String jsonData, Class<T> beanType) {
JavaType javaType = mapper.getTypeFactory().constructParametricType(List.class, beanType);
try {
List<T> list = mapper.readValue(jsonData, javaType);
return list;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
2.实体类mapper生成器（generator）：
generatorConfig.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<properties resource="jdbc.properties" />
<context id="mysql" targetRuntime="MyBatis3Simple"> <!-- 使用mybatis的通用mapper插件 -->
<plugin type="${mapper.plugin}">
<property name="mappers" value="${mapper.Mapper}" />
</plugin> <commentGenerator>
<!-- 是否去除自动生成的注释 true：是 ： false:否 -->
<property name="suppressAllComments" value="true" />
</commentGenerator> <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
<jdbcConnection driverClass="${jdbc.driverClassName}"
connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}">
</jdbcConnection> <javaTypeResolver>
<property name="forceBigDecimals" value="false" />
</javaTypeResolver> <!-- targetProject:生成pojo的位置
targetPackage:把生成的pojo放在指定包中
--> <javaModelGenerator targetPackage="cn.solr.model"
targetProject="./src/main/java">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="false" />
<!-- 从数据库返回的值被清理前后的空格 -->
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!-- targetProject:mapper映射文件生成的位置
mapper.xml文件生成出来的位置，放在mapper文件夹在，mapper文件夹会在./src/main/resources生成
-->
<sqlMapGenerator targetPackage="mapper" targetProject="./src/main/resources">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="false" />
</sqlMapGenerator>
<!-- targetPackage：mapper接口生成的位置
XXXMapper.java(I)生成出来的位置
-->
<javaClientGenerator type="XMLMAPPER"
targetPackage="cn.solr.mapper" targetProject="./src/main/java">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="false" />
</javaClientGenerator> <!-- !!!!!
<table>指向数据库
从数据库中读取表信息并生成对应的实体类
tableName:是数据库中的表名，必须要和数据库中一致(包括大小写和下划线。。。)
domainObjectName:根据表信息生成的pojo的名字(xxx.java)
--> <table tableName="ego_item" domainObjectName="Item">
<!-- generatedKey:主键自增生成策略
column:指定主键的列
sqlStatement:指定数据库类型
identity:mysql的自增主键
-->
<generatedKey column="id" sqlStatement="Mysql" identity="true" />
</table>
<table tableName="ego_item_desc">
<generatedKey column="id" sqlStatement="Mysql" identity="true"/>
</table>
<table tableName="ego_item_cat" domainObjectName="ego_content_category" >
<generatedKey column="id" sqlStatement="Mysql" identity="true"/>
</table>
</context>
</generatorConfiguration>
jdbc.properties:
#\u6570\u636e\u5e93\u8fde\u63a5\u4fe1\u606f
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test
jdbc.username=root
jdbc.password=root mapper.plugin=tk.mybatis.mapper.generator.MapperPlugin
mapper.Mapper=tk.mybatis.mapper.common.Mapper
pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>ego-generator</groupId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>ego-generator Maven Webapp</name>
<url>http://maven.apache.org</url>
<artifactId>ego-generator</artifactId> <dependencies>
<!-- mybatis begin -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.4</version>
</dependency>
<!-- mybatis end --> <!-- mybatis generator begin -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
<scope>compile</scope>
<optional>true</optional>
</dependency>
<!-- mybatis generator end --> <!-- mybatis plugins begin
通用的mapper
-->
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper</artifactId>
<version>3.4.3</version>
</dependency>
<!-- mybatis plugins end -->
</dependencies> <build>
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<!-- 该插件的核心配置(在项目进入编译期的时候，会加载<configuration>标签下的配置文件) -->
<configuration>
<configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>
<overwrite>true</overwrite>
<verbose>true</verbose>
</configuration>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.40</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper</artifactId>
<version>3.3.9</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
右键pom.xml文件，Run as： mybatis-generator.generate，生成对应实体类和mapper