spring boot 整合mybatis、redis、 spring mvc基本配置

1. 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>com.wisdom</groupId>
<artifactId>springboot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>

<name>springboot</name>
<description>Demo project for Spring Boot</description>

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.7</java.version>
    </properties>

<!-- log4j begin -->
    <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter</artifactId>
      <exclusions>
        <exclusion>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-logging</artifactId>
        </exclusion>
      </exclusions>
    </dependency>

    <!-- log4j -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-log4j</artifactId>
      <version>1.3.8.RELEASE</version>
    </dependency>
    <!-- log4j end -->
    <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
        <de
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pendency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.35</version>
        </dependency>
        <!-- alibaba的druid数据库连接池 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.11</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-joda</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-parameter-names</artifactId>
        </dependency>
        <!-- 分页插件 -->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.1.2</version>
        </dependency>
        <!-- JSP相关 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
        <!-- alibaba的druid数据库连接池 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.0</version>
        </dependency>
        
        <!-- redis cache related.....start -->
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
            <version>1.7.0.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.7.3</version>
        </dependency>
        <!-- redis cache related.....end -->
        
        <dependency>
           <groupId>org.apache.tomcat.embed</groupId>
           <artifactId>tomcat-embed-jasper</artifactId>
           <scope>provided</scope>
        </dependency>
        
        <!-- Apache工具组件 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
</dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <!-- mybatis generator 自动生成代码插件 -->
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.2</version>
                <configuration>
                    <configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>
                    <overwrite>true</overwrite>
                    <verbose>true</verbose>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

2. application.yml

server:
  servlet-path: /
spring:
  datasource:
     name: test
url:jdbc:mysql://127.0.0.1:3306/CMS?useUnicode=true&characterEncoding=utf8&autoReconnect=true&allowMultiQueries=true
     username: root
     password: minqiang
     type: com.alibaba.druid.pool.DruidDataSource
     driver-class-name: com.mysql.jdbc.Driver
     filters: stat
     maxActive: 20
     initialSize: 1
     maxWait: 60000
     minIdle: 1
     timeBetweenEvictionRunsMillis: 60000
     minEvictableIdleTimeMillis: 300000
     validationQuery: select 'x'
     testWhileIdle: true
     testOnBorrow: false
     testOnReturn: false
     poolPreparedStatements: true
     maxOpenPreparedStatements: 20

  mvc:
    view:
      prefix: /WEB-INF/jsp/ 
      suffix: .jsp
  redis:
    host: 192.168.204.130
    port: 6379
    pool:
      max-active: 1000
      max-idle: 1000
      max-wait: 1000000
  
    
mybatis:
      mapper-locations: classpath:mapping/*.xml
      type-aliases-package: com.wisdom.model
      

  3. spring boot的入口类

    package com.wisdom;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.cache.annotation.EnableCaching;

@SpringBootApplication
@EnableCaching
public class SpringbootApplication extends SpringBootServletInitializer{

public static void main(String[] args) {
SpringApplication.run(SpringbootApplication.class, args);
}

@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(SpringbootApplication.class);
}

}

4. mybatis有关接口和映射文件

package com.wisdom.dao;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

import com.wisdom.model.User;

@Mapper
public interface UserMapper {
/*@Select("SELECT * FROM user WHERE id = #{userId}")
public User selectByPrimaryKey(int userId);*/
public User selectByPrimaryKey(int userId);

    public List<User> selectAllUser();

    public void insertUser(User user);

    public void deleteUser(int id);

    public List<User> findUsers(String keyWords);

    public void editUser(User user);
}

Usermapper.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.wisdom.dao.UserMapper">
    <resultMap id="BaseResultMap" type="com.wisdom.model.User">
        <id column="id" property="id" jdbcType="INTEGER" />
        <result column="userName" property="userName" jdbcType="VARCHAR" />
        <result column="sex" property="sex" jdbcType="VARCHAR" />
        <result column="age" property="age" jdbcType="INTEGER" />
    </resultMap>
    <sql id="Base_Column_List">
        id,userName,sex,age
    </sql>
    <select id="findUsers" resultMap="BaseResultMap" parameterType="String">
        select
        <include refid="Base_Column_List" />
        from user
        where id like #{keyWords}
        or userName like #{keyWords}
        or sex like #{keyWords}
        or age like #{keyWords}
    </select>

    <!-- 查询所有的user -->
    <select id="selectAllUser" resultMap="BaseResultMap">
        select
        <include refid="Base_Column_List" />
        from user
    </select>

    <!-- 添加一个用户 -->
    <insert id="insertUser" parameterType="com.wisdom.model.User">
        INSERT INTO
        user(userName,sex,age) VALUES
        (#{userName},#{sex},#{age})
    </insert>

    <!-- 删除用户 -->
    <delete id="deleteUser" parameterType="int">
        DELETE FROM user WHERE
        id=#{id}
    </delete>

    <!-- 更新user信息 -->
    <update id="editUser" parameterType="com.wisdom.model.User">
        UPDATE user SET
        userName=#{userName}, sex=#{sex},age=#{age} WHERE id=#{id}
    </update>
</mapper> 
UserMapper和UserMapper.xml放在一个目录下面

5. Redis相关的service配置

package com.wisdom.service.impl;

import java.util.List;

import javax.annotation.Resource;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
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.wisdom.dao.UserMapper;
import com.wisdom.model.User;
import com.wisdom.service.IUserService;
/**
 * userService
 * 
 * 缓存机制说明：所有的查询结果都放进了缓存，也就是把MySQL查询的结果放到了redis中去，
 * 然后第二次发起该条查询时就可以从redis中去读取查询的结果，从而不与MySQL交互，从而达到优化的效果，
 * redis的查询速度之于MySQL的查询速度相当于 内存读写速度 /硬盘读写速度 
 * @Cacheable("a")注解的意义就是把该方法的查询结果放到redis中去，下一次再发起查询就去redis中去取，存在redis中的数据的key就是a；
 * @CacheEvict(value={"a","b"},allEntries=true) 的意思就是执行该方法后要清除redis中key名称为a,b的数据；
 * 
 * 
 * 
 * 缓存主要在service层进行，查询的结果会缓存，把对象序列号存到redis中去，key就是注解中的参数，
 * 例如@Cacheable("findUsers"): 存在redis中的key就是findUsers。缓存了这个结果之后再次请求这个方法就不会去数据库中查，
 * 而是从redis缓存中读取数据，这样就减少了跟数据库之间的交互。然后修改、删除、增加操作就会清除缓存，保持数据的一致性。
 */
@Service("userService")
@Transactional(propagation=Propagation.REQUIRED, rollbackFor=Exception.class) 
public class UserService implements IUserService {

@Resource
    private UserMapper iUserDao;

private static final Log logger = LogFactory.getLog(UserService.class);

    @Cacheable("getUserById") //标注该方法查询的结果进入缓存，再次访问时直接读取缓存中的数据
    @Override
    public User getUserById(int userId) {
        return this.iUserDao.selectByPrimaryKey(userId);
    }

    @Cacheable("getAllUser")
    @Override
    public List<User> getAllUser() {
        return this.iUserDao.selectAllUser();
    }

    @CacheEvict(value= {"getAllUser","getUserById","findUsers"},allEntries=true)//清空缓存，allEntries变量表示所有对象的缓存都清除
    @Override
    public void insertUser(User user) {
        this.iUserDao.insertUser(user);
    }

    @CacheEvict(value= {"getAllUser","getUserById","findUsers"},allEntries=true)
    @Override
    public void deleteUser(int id) {
        this.iUserDao.deleteUser(id);
    }

    @Cacheable("findUsers")
    @Override
 
9b4f
  public List<User> findUsers(String keyWords) {
    logger.info("当前访问的关键字：" + keyWords);
        return iUserDao.findUsers(keyWords);
    }

    @CacheEvict(value= {"getAllUser","getUserById","findUsers"},allEntries=true)
    @Override
    public void editUser(User user) {
        this.iUserDao.editUser(user);
    }

}

/**
 * 要想使用redis存对象，一定要让实体类实现Serializable接口，否则会报错。
 *
 */