Spring Boot + MyBatis + Druid + Redis + Thymeleaf 整合小结

Spring Boot + MyBatis + Druid + Redis + Thymeleaf 整合小结

这两天闲着没事想利用**Spring Boot**加上阿里的开源数据连接池**Druid**搭建个简单的框架，主要是想了解一下**Druid**的可视化数据监控，无奈水平受限只能一边 Google 一边 整合，后来发现网上的一些整合资源太差强人意，于是我想把我得一些整合思路分享出来，供大家浏览，哪里不合适希望可以提出来，一起进步！

特别感谢一下我的朋友 [@码农界的苦逼猿](https://blog.csdn.net/qq_38011415)

开始

环境：jdk1.8，idea, maven 3.5.0

1、项目结构：

2、pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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>org.yliu</groupId>
    <artifactId>mui</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>mui</name>
    <description>org.yliu.mui</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.6.RELEASE</version>
        <relativePath/>
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>5.1.4</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.47</version>
        </dependency>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.9.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

到了这一步，项目的基本依赖就算结束了。

3、在这个Demo项目中我用的是application.properties，可根据个人喜好改为application.yml

# 访问端口
server.port=2088

# 数据库配置
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.name=demo
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/demo
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.initialSize=1
spring.datasource.minIdle=3
spring.datasource.maxActive=20
spring.datasource.maxWait=60000
spring.datasource.timeBetweenEvictionRunsMillis=60000
spring.datasource.minEvictableIdleTimeMillis=30000
spring.datasource.validationQuery=select 'x'
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
spring.datasource.poolPreparedStatements=true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
spring.datasource.filters=stat,wall,slf4j
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
spring.datasource.useGlobalDataSourceStat=true

# redis 配置
spring.redis.port=6379
spring.redis.host=127.0.0.1
spring.redis.password=123456

# thymeleaf 配置
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=.html
spring.thymeleaf.cache=false
spring.thymeleaf.check-template-location=true
spring.thymeleaf.encoding=UTF-8

# 日志相关
logging.pattern.console=%d --> %msg%n
# 此处配置sql打印
logging.pattern.level=org.yliu.mui.mapper: debug

4、数据库创建sql我就不放出来了，可随意创建数据进行测试

5、创建好表数据 可以使用 mybatis generator 自动生成代码，

  假设我有一张 **User** 表，那么生成的相关文件为：

对应数据库的实体：

package org.yliu.mui.pojo.po;

import java.util.Date;

public class MallUserPo {
    private Integer id;

    private String guid;

    private String avatars;

    private String openId;

    private String userName;

    private Integer sex;

    private String phone;

    private String targetPhone;

    private Date createTime;

    private Date updateTime;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getGuid() {
        return guid;
    }

    public void setGuid(String guid) {
        this.guid = guid == null ? null : guid.trim();
    }

    public String getAvatars() {
        return avatars;
    }

    public void setAvatars(String avatars) {
        this.avatars = avatars == null ? null : avatars.trim();
    }

    public String getOpenId() {
        return openId;
    }

    public void setOpenId(String openId) {
        this.openId = openId == null ? null : openId.trim();
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName == null ? null : userName.trim();
    }

    public Integer getSex() {
        return sex;
    }

    public void setSex(Integer sex) {
        this.sex = sex;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone == null ? null : phone.trim();
    }

    public String getTargetPhone() {
        return targetPhone;
    }

    public void setTargetPhone(String targetPhone) {
        this.targetPhone = targetPhone == null ? null : targetPhone.trim();
    }

    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

    public Date getUpdateTime() {
        return updateTime;
    }

    public void setUpdateTime(Date updateTime) {
        this.updateTime = updateTime;
    }
}

持久层接口：

package org.yliu.mui.mapper;

import org.yliu.mui.pojo.po.MallUserPo;
import org.yliu.mui.pojo.po.MallUserPoExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;

public interface MallUserPoMapper {
    int countByExample(MallUserPoExample example);

    int deleteByExample(MallUserPoExample example);

    int deleteByPrimaryKey(Integer id);

    int insert(MallUserPo record);

    int insertSelective(MallUserPo record);

    List<MallUserPo> selectByExample(MallUserPoExample example);

    MallUserPo selectByPrimaryKey(Integer id);

    int updateByExampleSelective(@Param("record") MallUserPo record, @Param("example") MallUserPoExample example);

    int updateByExample(@Param("record") MallUserPo record, @Param("example") MallUserPoExample example);

    int updateByPrimaryKeySelective(MallUserPo record);

    int updateByPrimaryKey(MallUserPo record);
}

映射文件：

<?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="org.yliu.mui.mapper.MallUserPoMapper" >
  <resultMap id="BaseResultMap" type="org.yliu.mui.pojo.po.MallUserPo" >
    <id column="id" property="id" jdbcType="INTEGER" />
    <result column="guid" property="guid" jdbcType="VARCHAR" />
    <result column="avatars" property="avatars" jdbcType="VARCHAR" />
    <result column="open_id" property="openId" jdbcType="VARCHAR" />
    <result column="user_name" property="userName" jdbcType="VARCHAR" />
    <result column="sex" property="sex" jdbcType="INTEGER" />
    <result column="phone" property="phone" jdbcType="VARCHAR" />
    <result column="target_phone" property="targetPhone" jdbcType="VARCHAR" />
    <result column="create_time" property="createTime" jdbcType="TIMESTAMP" />
    <result column="update_time" property="updateTime" jdbcType="TIMESTAMP" />
  </resultMap>
  <sql id="Example_Where_Clause" >
    <where >
      <foreach collection="oredCriteria" item="criteria" separator="or" >
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Update_By_Example_Where_Clause" >
    <where >
      <foreach collection="example.oredCriteria" item="criteria" separator="or" >
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List" >
    id, guid, avatars, open_id, user_name, sex, phone, target_phone, create_time, update_time
  </sql>
  <select id="selectByExample" resultMap="BaseResultMap" parameterType="org.yliu.mui.pojo.po.MallUserPoExample" >
    select
    <if test="distinct" >
      distinct
    </if>
    <include refid="Base_Column_List" />
    from mall_user
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null" >
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
    select
    <include refid="Base_Column_List" />
    from mall_user
    where id = #{id,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
    delete from mall_user
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <delete id="deleteByExample" parameterType="org.yliu.mui.pojo.po.MallUserPoExample" >
    delete from mall_user
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="org.yliu.mui.pojo.po.MallUserPo" >
    insert into mall_user (id, guid, avatars,
      open_id, user_name, sex,
      phone, target_phone, create_time,
      update_time)
    values (#{id,jdbcType=INTEGER}, #{guid,jdbcType=VARCHAR}, #{avatars,jdbcType=VARCHAR},
      #{openId,jdbcType=VARCHAR}, #{userName,jdbcType=VARCHAR}, #{sex,jdbcType=INTEGER},
      #{phone,jdbcType=VARCHAR}, #{targetPhone,jdbcType=VARCHAR}, #{createTime,jdbcType=TIMESTAMP},
      #{updateTime,jdbcType=TIMESTAMP})
  </insert>
  <insert id="insertSelective" parameterType="org.yliu.mui.pojo.po.MallUserPo" >
    insert into mall_user
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        id,
      </if>
      <if test="guid != null" >
        guid,
      </if>
      <if test="avatars != null" >
        avatars,
      </if>
      <if test="openId != null" >
        open_id,
      </if>
      <if test="userName != null" >
        user_name,
      </if>
      <if test="sex != null" >
        sex,
      </if>
      <if test="phone != null" >
        phone,
      </if>
      <if test="targetPhone != null" >
        target_phone,
      </if>
      <if test="createTime != null" >
        create_time,
      </if>
      <if test="updateTime != null" >
        update_time,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        #{id,jdbcType=INTEGER},
      </if>
      <if test="guid != null" >
        #{guid,jdbcType=VARCHAR},
      </if>
      <if test="avatars != null" >
        #{avatars,jdbcType=VARCHAR},
      </if>
      <if test="openId != null" >
        #{openId,jdbcType=VARCHAR},
      </if>
      <if test="userName != null" >
        #{userName,jdbcType=VARCHAR},
      </if>
      <if test="sex != null" >
        #{sex,jdbcType=INTEGER},
      </if>
      <if test="phone != null" >
        #{phone,jdbcType=VARCHAR},
      </if>
      <if test="targetPhone != null" >
        #{targetPhone,jdbcType=VARCHAR},
      </if>
      <if test="createTime != null" >
        #{createTime,jdbcType=TIMESTAMP},
      </if>
      <if test="updateTime != null" >
        #{updateTime,jdbcType=TIMESTAMP},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="org.yliu.mui.pojo.po.MallUserPoExample" resultType="java.lang.Integer" >
    select count(*) from mall_user
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map" >
    update mall_user
    <set >
      <if test="record.id != null" >
        id = #{record.id,jdbcType=INTEGER},
      </if>
      <if test="record.guid != null" >
        guid = #{record.guid,jdbcType=VARCHAR},
      </if>
      <if test="record.avatars != null" >
        avatars = #{record.avatars,jdbcType=VARCHAR},
      </if>
      <if test="record.openId != null" >
        open_id = #{record.openId,jdbcType=VARCHAR},
      </if>
      <if test="record.userName != null" >
        user_name = #{record.userName,jdbcType=VARCHAR},
      </if>
      <if test="record.sex != null" >
        sex = #{record.sex,jdbcType=INTEGER},
      </if>
      <if test="record.phone != null" >
        phone = #{record.phone,jdbcType=VARCHAR},
      </if>
      <if test="record.targetPhone != null" >
        target_phone = #{record.targetPhone,jdbcType=VARCHAR},
      </if>
      <if test="record.createTime != null" >
        create_time = #{record.createTime,jdbcType=TIMESTAMP},
      </if>
      <if test="record.updateTime != null" >
        update_time = #{record.updateTime,jdbcType=TIMESTAMP},
      </if>
    </set>
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map" >
    update mall_user
    set id = #{record.id,jdbcType=INTEGER},
      guid = #{record.guid,jdbcType=VARCHAR},
      avatars = #{record.avatars,jdbcType=VARCHAR},
      open_id = #{record.openId,jdbcType=VARCHAR},
      user_name = #{record.userName,jdbcType=VARCHAR},
      sex = #{record.sex,jdbcType=INTEGER},
      phone = #{record.phone,jdbcType=VARCHAR},
      target_phone = #{record.targetPhone,jdbcType=VARCHAR},
      create_time = #{record.createTime,jdbcType=TIMESTAMP},
      update_time = #{record.updateTime,jdbcType=TIMESTAMP}
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByPrimaryKeySelective" parameterType="org.yliu.mui.pojo.po.MallUserPo" >
    update mall_user
    <set >
      <if test="guid != null" >
        guid = #{guid,jdbcType=VARCHAR},
      </if>
      <if test="avatars != null" >
        avatars = #{avatars,jdbcType=VARCHAR},
      </if>
      <if test="openId != null" >
        open_id = #{openId,jdbcType=VARCHAR},
      </if>
      <if test="userName != null" >
        user_name = #{userName,jdbcType=VARCHAR},
      </if>
      <if test="sex != null" >
        sex = #{sex,jdbcType=INTEGER},
      </if>
      <if test="phone != null" >
        phone = #{phone,jdbcType=VARCHAR},
      </if>
      <if test="targetPhone != null" >
        target_phone = #{targetPhone,jdbcType=VARCHAR},
      </if>
      <if test="createTime != null" >
        create_time = #{createTime,jdbcType=TIMESTAMP},
      </if>
      <if test="updateTime != null" >
        update_time = #{updateTime,jdbcType=TIMESTAMP},
      </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="org.yliu.mui.pojo.po.MallUserPo" >
    update mall_user
    set guid = #{guid,jdbcType=VARCHAR},
      avatars = #{avatars,jdbcType=VARCHAR},
      open_id = #{openId,jdbcType=VARCHAR},
      user_name = #{userName,jdbcType=VARCHAR},
      sex = #{sex,jdbcType=INTEGER},
      phone = #{phone,jdbcType=VARCHAR},
      target_phone = #{targetPhone,jdbcType=VARCHAR},
      create_time = #{createTime,jdbcType=TIMESTAMP},
      update_time = #{updateTime,jdbcType=TIMESTAMP}
    where id = #{id,jdbcType=INTEGER}
  </update>
</mapper>

到了这一步和MyBatis整合完成了一半了，下面完成下一半。

6、首先需要配置Druid连接池

package org.yliu.mui.config;

import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.servlet.Filter;
import javax.servlet.Servlet;

/**
 * Druid连接池配置
 */
@Configuration
public class DruidConfiguration {

    private static final Logger LOGGER = LoggerFactory.getLogger(DruidConfiguration.class);

	/**
	 * 访问路径及用户名、密码
	 */
	@Bean
	public ServletRegistrationBean<Servlet> druidConfig() {
        LOGGER.info("init Druid Servlet Configuration ");
		final ServletRegistrationBean<Servlet> srb = new ServletRegistrationBean<Servlet>();
		srb.setServlet(new StatViewServlet());
		srb.addUrlMappings("/druid/*");
		srb.addInitParameter("loginUsername", "admin");
		srb.addInitParameter("loginPassword", "admin");
		return srb;
	}

	/**
	 * 配置过滤器
	 */
    @Bean
    public FilterRegistrationBean filterRegistrationBean() {
        final FilterRegistrationBean<Filter> filterRegistrationBean = new FilterRegistrationBean<Filter>();
		filterRegistrationBean.setFilter(new WebStatFilter());
		filterRegistrationBean.addUrlPatterns("/*");
		filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
		return filterRegistrationBean;
    }
}

7、配置完连接池，下面为持久层相关配置(分页插件也在此类配置)

package org.yliu.mui.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.github.pagehelper.PageInterceptor;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.yliu.mui.properties.DBProperties;

import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.Properties;

/**
 * 持久层相关配置
 */
@Configuration
public class SessionFactoryConfig {

    private static final Logger LOGGER = LoggerFactory.getLogger(SessionFactoryConfig.class);

    private final DBProperties db;

    @Autowired
    public SessionFactoryConfig(DBProperties db) {
        this.db = db;
    }

    /**
     * 创建数据源
     */
    @Bean
    @Primary
    public DataSource dataSource() {
        DruidDataSource datasource = new DruidDataSource();
        datasource.setUrl(db.getUrl());
        datasource.setUsername(db.getUsername());
        datasource.setPassword(db.getPassword());
        datasource.setDriverClassName(db.getDriverClassName());
        datasource.setInitialSize(db.getInitialSize());
        datasource.setMinIdle(db.getMinIdle());
        datasource.setMaxActive(db.getMaxActive());
        datasource.setMaxWait(db.getMaxWait());
        datasource.setTimeBetweenEvictionRunsMillis(db.getTimeBetweenEvictionRunsMillis());
        datasource.setMinEvictableIdleTimeMillis(db.getMinEvictableIdleTimeMillis());
        datasource.setValidationQuery(db.getValidationQuery());
        datasource.setTestOnReturn(db.isTestOnReturn());
        datasource.setPoolPreparedStatements(db.isPoolPreparedStatements());
        datasource.setMaxPoolPreparedStatementPerConnectionSize(db.getMaxPoolPreparedStatementPerConnectionSize());
        datasource.setUseGlobalDataSourceStat(db.isUseGlobalDataSourceStat());
        try {
            datasource.setFilters(db.getFilters());
        } catch (SQLException e) {
            LOGGER.info("druid configuration initialization filter: " + e);
        }
        datasource.setConnectionProperties(db.getConnectionProperties());
        return datasource;
    }

    /**
     * 配置分页插件
     */
    @Bean(name = "pageInterceptor")
    public PageInterceptor pageHelperConfig() {
        PageInterceptor pageInterceptor = new PageInterceptor();
        Properties properties = new Properties();
        properties.setProperty("reasonable", "true");
        properties.setProperty("supportMethodsArguments", "true");
        properties.setProperty("returnPageInfo", "check");
        properties.setProperty("params", "count=countSql");
        pageInterceptor.setProperties(properties);
        return pageInterceptor;
    }

    /**
     * 配置mybatis
     */
    @Bean(name = "sqlSessionFactory")
    public SqlSessionFactory sqlSessionFactory(
            @Qualifier("dataSource") final DataSource dataSource,
            @Qualifier("pageInterceptor") final PageInterceptor pageInterceptor) throws Exception {
        final SqlSessionFactoryBean sqlSessionFactory = new SqlSessionFactoryBean();
        sqlSessionFactory.setDataSource(dataSource);
        final PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        resolver.getResources("classpath*:mapper/**/*.xml");
        sqlSessionFactory.setMapperLocations(resolver.getResources("classpath*:mapper/**/*.xml"));
        // 具体参考自己设置，参考 xml 参数说明或源码注释
        sqlSessionFactory.setPlugins(new Interceptor[]{pageInterceptor});
        return sqlSessionFactory.getObject();
    }
}

---

这里需要说明一下的是，DBProperties 类是对应 application.properties 配置文件中的数据库相关配置属性

---

DBProperties.java ：

package org.yliu.mui.properties;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;

@Configuration
@ConfigurationProperties(prefix = "spring.datasource")
public class DBProperties {
    private String url;
    private String username;
    private String password;
    private String driverClassName;
    private int initialSize;
    private int minIdle;
    private int maxActive;
    private int maxWait;
    private int timeBetweenEvictionRunsMillis;
    private int minEvictableIdleTimeMillis;
    private String validationQuery;
    private boolean testWhileIdle;
    private boolean testOnBorrow;
    private boolean testOnReturn;
    private boolean poolPreparedStatements;
    private int maxPoolPreparedStatementPerConnectionSize;
    private String filters;
    private String connectionProperties;
    private boolean useGlobalDataSourceStat;

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    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 getDriverClassName() {
        return driverClassName;
    }

    public void setDriverClassName(String driverClassName) {
        this.driverClassName = driverClassName;
    }

    public int getInitialSize() {
        return initialSize;
    }

    public void setInitialSize(int initialSize) {
        this.initialSize = initialSize;
    }

    public int getMinIdle() {
        return minIdle;
    }

    public void setMinIdle(int minIdle) {
        this.minIdle = minIdle;
    }

    public int getMaxActive() {
        return maxActive;
    }

    public void setMaxActive(int maxActive) {
        this.maxActive = maxActive;
    }

    public int getMaxWait() {
        return maxWait;
    }

    public void setMaxWait(int maxWait) {
        this.maxWait = maxWait;
    }

    public int getTimeBetweenEvictionRunsMillis() {
        return timeBetweenEvictionRunsMillis;
    }

    public void setTimeBetweenEvictionRunsMillis(int timeBetweenEvictionRunsMillis) {
        this.timeBetweenEvictionRunsMillis = timeBetweenEvictionRunsMillis;
    }

    public int getMinEvictableIdleTimeMillis() {
        return minEvictableIdleTimeMillis;
    }

    public void setMinEvictableIdleTimeMillis(int minEvictableIdleTimeMillis) {
        this.minEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
    }

    public String getValidationQuery() {
        return validationQuery;
    }

    public void setValidationQuery(String validationQuery) {
        this.validationQuery = validationQuery;
    }

    public boolean isTestWhileIdle() {
        return testWhileIdle;
    }

    public void setTestWhileIdle(boolean testWhileIdle) {
        this.testWhileIdle = testWhileIdle;
    }

    public boolean isTestOnBorrow() {
        return testOnBorrow;
    }

    public void setTestOnBorrow(boolean testOnBorrow) {
        this.testOnBorrow = testOnBorrow;
    }

    public boolean isTestOnReturn() {
        return testOnReturn;
    }

    public void setTestOnReturn(boolean testOnReturn) {
        this.testOnReturn = testOnReturn;
    }

    public boolean isPoolPreparedStatements() {
        return poolPreparedStatements;
    }

    public void setPoolPreparedStatements(boolean poolPreparedStatements) {
        this.poolPreparedStatements = poolPreparedStatements;
    }

    public int getMaxPoolPreparedStatementPerConnectionSize() {
        return maxPoolPreparedStatementPerConnectionSize;
    }

    public void setMaxPoolPreparedStatementPerConnectionSize(int maxPoolPreparedStatementPerConnectionSize) {
        this.maxPoolPreparedStatementPerConnectionSize = maxPoolPreparedStatementPerConnectionSize;
    }

    public String getFilters() {
        return filters;
    }

    public void setFilters(String filters) {
        this.filters = filters;
    }

    public String getConnectionProperties() {
        return connectionProperties;
    }

    public void setConnectionProperties(String connectionProperties) {
        this.connectionProperties = connectionProperties;
    }

    public boolean isUseGlobalDataSourceStat() {
        return useGlobalDataSourceStat;
    }

    public void setUseGlobalDataSourceStat(boolean useGlobalDataSourceStat) {
        this.useGlobalDataSourceStat = useGlobalDataSourceStat;
    }
}

8、配置完这些，小伙伴不要心急，还有一项重要的配置，那就是扫描 mapper 接口！！！

package org.yliu.mui.config;

import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * 扫描Mybatis接口
 */
@Configuration
// 在持久层相关配置成功注入后加载
@AutoConfigureAfter(SessionFactoryConfig.class)
public class MyBatisMapperScannerConfig {
    @Bean
    public MapperScannerConfigurer mapperScannerConfigurer() {
        MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
        mapperScannerConfigurer.setSqlSessionFactoryBeanName("sqlSessionFactory");
        // 需要扫描的包路径
        mapperScannerConfigurer.setBasePackage("org.yliu.mui.mapper");
        return mapperScannerConfigurer;
    }
}

如果不写扫描配置类，也可以在Spring Boot 入口类main方法上加入 @MapperScan("XX.XXX.mapper")注解进行扫描，个人习惯。

9、redis：(redis这里我没有选用 Spring 提供的 RedisTemplate，还是习惯 jedis )

package org.yliu.mui.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.data.redis.RedisProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

/**
 * Redis配置
 */
@Configuration
// RedisProperties 为Spring内部默认提供的关于redis配置的属性绑定类
@AutoConfigureAfter(RedisProperties.class)
public class RedisConfig {

    private static final Logger LOGGER = LoggerFactory.getLogger(RedisConfig.class);

    private final RedisProperties redisProperties;

    @Autowired
    public RedisConfig(RedisProperties redisProperties) {
        this.redisProperties = redisProperties;
    }

    @Bean
    public JedisPool redisPoolFactory(){
        JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
        int port = redisProperties.getPort();
        String host = redisProperties.getHost();
        int timeout = 2000;
        String password = redisProperties.getPassword();
        JedisPool jedisPool = new JedisPool(jedisPoolConfig,host,port,timeout,password);
        LOGGER.info("JedisPool注入成功！");
        LOGGER.info("redis地址：" + host + ":" + port);
        return  jedisPool;
    }

}

我封装了一个 JedisClient 的接口，方面操作和后期增加新命令。

package org.yliu.mui.redis;

import java.util.List;

public interface JedisClient {
    String set(String key, String value);

    String get(String key);

    Boolean exists(String key);

    Long expire(String key, int seconds);

    Long ttl(String key);

    Long incr(String key);

    Long hset(String key, String field, String value);

    String hget(String key, String field);

    Long hdel(String key, String... field);

    Boolean hexists(String key, String field);

    List<String> hvals(String key);

    Long del(String key);
}

JedisClient 实现类

package org.yliu.mui.redis.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.yliu.mui.redis.JedisClient;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;

import java.util.List;

/**
 * Redis实现
 */
@Configuration
public class JedisClientPool implements JedisClient {

    private final JedisPool jedisPool;

    @Autowired
    public JedisClientPool(JedisPool jedisPool) {
        this.jedisPool = jedisPool;
    }

    @Override
    public String set(String key, String value) {
        Jedis jedis = jedisPool.getResource();
        String result = jedis.set(key, value);
        jedis.close();
        return result;
    }

    @Override
    public String get(String key) {
        Jedis jedis = jedisPool.getResource();
        String result = jedis.get(key);
        jedis.close();
        return result;
    }

    @Override
    public Boolean exists(String key) {
        Jedis jedis = jedisPool.getResource();
        Boolean result = jedis.exists(key);
        jedis.close();
        return result;
    }

    @Override
    public Long expire(String key, int seconds) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.expire(key, seconds);
        jedis.close();
        return result;
    }

    @Override
    public Long ttl(String key) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.ttl(key);
        jedis.close();
        return result;
    }

    @Override
    public Long incr(String key) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.incr(key);
        jedis.close();
        return result;
    }

    @Override
    public Long hset(String key, String field, String value) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.hset(key, field, value);
        jedis.close();
        return result;
    }

    @Override
    public String hget(String key, String field) {
        Jedis jedis = jedisPool.getResource();
        String result = jedis.hget(key, field);
        jedis.close();
        return result;
    }

    @Override
    public Long hdel(String key, String... field) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.hdel(key, field);
        jedis.close();
        return result;
    }

    @Override
    public Boolean hexists(String key, String field) {
        Jedis jedis = jedisPool.getResource();
        Boolean result = jedis.hexists(key, field);
        jedis.close();
        return result;
    }

    @Override
    public List<String> hvals(String key) {
        Jedis jedis = jedisPool.getResource();
        List<String> result = jedis.hvals(key);
        jedis.close();
        return result;
    }

    @Override
    public Long del(String key) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.del(key);
        jedis.close();
        return result;
    }
}

至此，整合完毕。。。

结果如何？

我分别贴上 Controller 、UserService 、UserServiceImpl 这里不一一细说了。

Controller :

package org.yliu.mui.controller;

import com.github.pagehelper.PageInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.yliu.mui.pojo.po.MallUserPo;
import org.yliu.mui.pojo.response.ResponseData;
import org.yliu.mui.service.MallUserService;

@RestController
public class DemoController {

    private final MallUserService mallUserService;

    @Autowired
    public DemoController(MallUserService userService) {
        this.mallUserService = userService;
    }

    @RequestMapping("/get/user/all")
    ResponseData<PageInfo<MallUserPo>> getUserAll() {
        return ResponseData.success("success", mallUserService.findAll());
    }
}

UserService ：

package org.yliu.mui.service;

import com.github.pagehelper.PageInfo;
import org.yliu.mui.pojo.po.MallUserPo;

public interface MallUserService {
	// 使用分页插件提供的PageInfo包装一下结果集
    PageInfo<MallUserPo> findAll();
}

UserServiceImpl :

package org.yliu.mui.service.impl;

import com.alibaba.fastjson.JSON;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.yliu.mui.mapper.MallUserPoMapper;
import org.yliu.mui.pojo.po.MallUserPo;
import org.yliu.mui.pojo.po.MallUserPoExample;
import org.yliu.mui.redis.JedisClient;
import org.yliu.mui.service.MallUserService;

import java.util.Date;
import java.util.List;
import java.util.UUID;

@Service
public class MallUserServiceImpl implements MallUserService {

    private final MallUserPoMapper userMapper;
	// 注入Jedis接口用来操作缓存
    private final JedisClient jedisClient;

    @Autowired
    public MallUserServiceImpl(MallUserPoMapper userMapper, JedisClient jedisClient) {
        this.userMapper = userMapper;
        this.jedisClient = jedisClient;
    }

    @Override
    public PageInfo<MallUserPo> findAll() {
        PageHelper.startPage(0, 20);
        MallUserPoExample userExample = new MallUserPoExample();
        List<MallUserPo> mallUserPos = userMapper.selectByExample(userExample);
        // 测试Jedis是否正常
        jedisClient.set("user_info", JSON.toJSONString(mallUserPos));
        return new PageInfo<>(mallUserPos);
    }
}

ok，到了这里可以把项目启动了，run......

项目运行成功后 输入 http://127.0.0.1:2088/druid

如果阿里的Druid连接池监控登录页面会呈现在你电脑屏幕上，恭喜~ 输入用户名、密码，去登录尝鲜吧。

下一步就是测试 持久层 和 redis 了

访问 http://127.0.0.1:2088/get/user/all

如果响应数据 带有 分页信息的json数据的话，恭喜你~整合已经完成了。

再看redis：

OK，一切正常。

注意：如果中间出现什么问题的话，不要着急，有点耐心，仔细排除一下错误。

可以在下方留言，积极讨论

可以关注微信个人公众号对我私信（下方二维码