springboot整合mybatis(SSM开发环境搭建)

0.项目结构:

---------------------方法一:使用mybatis官方提供的Spring Boot整合包实现---------------------

1.application.properties中配置整合mybatis的配置文件、mybatis扫描别名的基本包与数据源

server.port=80

logging.level.org.springframework=DEBUG

#springboot   mybatis

#jiazai mybatis peizhiwenjian

mybatis.mapper-locations = classpath:mapper/*Mapper.xml

mybatis.config-location = classpath:mapper/config/sqlMapConfig.xml

mybatis.type-aliases-package = cn.qlq.bean

#shujuyuan

spring.datasource.driver-class-name= com.mysql.jdbc.Driver

spring.datasource.url = jdbc:mysql://localhost:3306/test1?useUnicode=true&characterEncoding=utf-8

spring.datasource.username = root

spring.datasource.password = 123456

2.pom.xml加入springboot整合mybatis的jar包与数据库驱动包

<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>cn.qlq</groupId>

  <artifactId>springboot-ssm</artifactId>

  <version>0.0.1-SNAPSHOT</version>

  <packaging>war</packaging>

  <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>1.5.2.RELEASE</version>

   </parent>

  <dependencies>

        <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>org.springframework.boot</groupId>

            <artifactId>spring-boot-devtools</artifactId>

        </dependency>

        <!-- spring-boot整合mybatis -->

        <dependency>

            <groupId>org.mybatis.spring.boot</groupId>

            <artifactId>mybatis-spring-boot-starter</artifactId>

            <version>1.1.1</version>

        </dependency>

        <!-- mysql驱动 -->

        <dependency>

            <groupId>mysql</groupId>

            <artifactId>mysql-connector-java</artifactId>

            <version>5.1.6</version>

        </dependency>

          <!-- 基本配置 -->

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>4.9</version>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>servlet-api</artifactId>

            <version>2.5</version>

            <scope>provided</scope>

        </dependency>

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>jsp-api</artifactId>

            <version>2.0</version>

            <scope>provided</scope>

        </dependency>

    </dependencies>

  <build>

        <!-- 配置了很多插件 -->

        <plugins>

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-compiler-plugin</artifactId>

                <version>3.5.1</version>

                <configuration>

                    <source>1.7</source>

                    <target>1.7</target>

                    <encoding>UTF-8</encoding>

                </configuration>

            </plugin>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

3.mybatis全局配置文件:

sqlMapConfig.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>        

</configuration>

4.编写代码:

(1)User.java

package cn.qlq.bean;

import java.io.Serializable;

import java.util.Date;

public class User implements Serializable{

    /**

     *

     */

    private static final long serialVersionUID = 1L;

    private Integer id;

    private String username;

    private Date birthday;

    private String sex;

    private String address;

    public Integer getId() {

        return id;

    }

    public void setId(Integer id) {

        this.id = id;

    }

    public Date getBirthday() {

        return birthday;

    }

    public void setBirthday(Date birthday) {

        this.birthday = birthday;

    }

    public String getSex() {

        return sex;

    }

    public void setSex(String sex) {

        this.sex = sex;

    }

    public String getUsername() {

        return username;

    }

    public void setUsername(String username) {

        this.username = username;

    }

    public String getAddress() {

        return address;

    }

    public void setAddress(String address) {

        this.address = address;

    }

}

(2)UserMapper.java　　(注意接口上的注解是@mapper,代替之前扫描接口的操作)

package cn.qlq.mapper;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;

import cn.qlq.bean.User;

@Mapper

public interface UserMapper {

    public List<User> findAll();

}

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="cn.qlq.mapper.UserMapper">

    <select id="findAll" resultType="user">

        select * from user

    </select>

</mapper>

(3)

UserService.java

package cn.qlq.service;

import java.util.List;

import cn.qlq.bean.User;

public interface UserService {

    /**

     * 根据接口查询所用的用户

     */

    public List<User> findAllUser();

}

UserServiceImpl.java

package cn.qlq.service.impl;

import java.util.List;

import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import cn.qlq.bean.User;

import cn.qlq.mapper.UserMapper;

import cn.qlq.service.UserService;

@Service

public class UserServiceImpl implements UserService {

    @Autowired

    private UserMapper userMapper;

    public List<User> findAllUser() {

        List<User> list = userMapper.findAll();

        return list;

    }

}

(4)UserController.java

package cn.qlq.action;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import cn.qlq.bean.User;

import cn.qlq.service.UserService;

@RestController/**自动返回的是json格式数据***/

public class UserController {

    @Autowired

    private UserService userService;

    @RequestMapping("list")

    public List<User> list(){

        List<User> list = userService.findAllUser();

        return list;

    }

}

注意:@RestController 注解 (自动返回的是json格式数据)

(5)测试类

MySpringBootApplication.java

package cn.qlq;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.cache.annotation.EnableCaching;

@SpringBootApplication

public class MySpringBootApplication {

    public static void main(String[] args) {

        //入口运行类

        SpringApplication.run(MySpringBootApplication.class, args);

    }

}

4.启动测试

git源码地址:　　https://github.com/qiao-zhi/springboot-ssm

---------------方法二:使用mybatis-spring整合的方式，也就是我们传统的方式--------------

这里我们推荐使用第二种，因为这样我们可以很方便的控制Mybatis的各种配置。

首先，创建一个Mybatis的配置类：

代码：

package cn.qlq.config;

import javax.sql.DataSource;

import org.mybatis.spring.SqlSessionFactoryBean;

import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.core.io.Resource;

import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import org.springframework.core.io.support.ResourcePatternResolver;

@Configuration

    public class MyBatisConfig {

        @Bean

        @ConditionalOnMissingBean //当容器里没有指定的Bean的情况下创建该对象

        public SqlSessionFactoryBean sqlSessionFactory(DataSource dataSource) {

            SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();

            // 设置数据源

            sqlSessionFactoryBean.setDataSource(dataSource);

            // 设置mybatis的主配置文件

            ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();

            Resource mybatisConfigXml = resolver.getResource("classpath:mybatis/SqlMapConfig.xml");

            sqlSessionFactoryBean.setConfigLocation(mybatisConfigXml);

            // 设置别名包

            sqlSessionFactoryBean.setTypeAliasesPackage("cn.qlq.bean");

            return sqlSessionFactoryBean;

        }

    }

然后，创建Mapper接口的扫描类MapperScannerConfig：

package cn.qlq.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;

@Configuration

@AutoConfigureAfter(MyBatisConfig.class) //保证在MyBatisConfig实例化之后再实例化该类

public class MapperScannerConfig {

    // mapper接口的扫描器

    @Bean

    public MapperScannerConfigurer mapperScannerConfigurer() {

        MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();

        mapperScannerConfigurer.setBasePackage("cn.qlq.mapper");

        return mapperScannerConfigurer;

    }

}

创建一个spring配置类，扫描的包，与读取的资源文件，创建数据源:

package cn.qlq.config;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.PropertySource;

import com.jolbox.bonecp.BoneCPDataSource;

@Configuration // 通过该注解来表明该类是一个Spring的配置，相当于一个xml文件

@ComponentScan(basePackages = "cn.qlq") // 配置扫描包

@PropertySource(value = { "classpath:db.properties"}, ignoreResourceNotFound = true)

public class SpringConfig {

    @Value("${jdbc.url}")

    private String jdbcUrl;

    @Value("${jdbc.driverClassName}")

    private String jdbcDriverClassName;

    @Value("${jdbc.username}")

    private String jdbcUsername;

    @Value("${jdbc.password}")

    private String jdbcPassword;

    @Bean(destroyMethod = "close")

    public DataSource dataSource() {

        BoneCPDataSource boneCPDataSource = new BoneCPDataSource();

        // 数据库驱动

        boneCPDataSource.setDriverClass(jdbcDriverClassName);

        // 相应驱动的jdbcUrl

        boneCPDataSource.setJdbcUrl(jdbcUrl);

        // 数据库的用户名

        boneCPDataSource.setUsername(jdbcUsername);

        // 数据库的密码

        boneCPDataSource.setPassword(jdbcPassword);

        // 检查数据库连接池中空闲连接的间隔时间，单位是分，默认值：240，如果要取消则设置为0

        boneCPDataSource.setIdleConnectionTestPeriodInMinutes(60);

        // 连接池中未使用的链接最大存活时间，单位是分，默认值：60，如果要永远存活设置为0

        boneCPDataSource.setIdleMaxAgeInMinutes(30);

        // 每个分区最大的连接数

        boneCPDataSource.setMaxConnectionsPerPartition(100);

        // 每个分区最小的连接数

        boneCPDataSource.setMinConnectionsPerPartition(5);

        return boneCPDataSource;

    }

}

application.properties:

server.port=80

logging.level.org.springframework=DEBUG

#springboot   mybatis

#jiazai mybatis peizhiwenjian

#mybatis.mapper-locations = classpath:mapper/*Mapper.xml

#mybatis.config-location = classpath:mapper/config/sqlMapConfig.xml

#mybatis.type-aliases-package = cn.qlq.bean

#shujuyuan

spring.datasource.driver-class-name= com.mysql.jdbc.Driver

spring.datasource.url = jdbc:mysql://localhost:3306/test1?useUnicode=true&characterEncoding=utf-8

spring.datasource.username = root

spring.datasource.password = 123456

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>cn.qlq</groupId>

    <artifactId>springboot-ssm</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>war</packaging>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>1.5.2.RELEASE</version>

    </parent>

    <dependencies>

        <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>org.springframework.boot</groupId>

            <artifactId>spring-boot-devtools</artifactId>

        </dependency>

        <!-- spring-boot整合mybatis -->

        <!-- <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId>

            <version>1.1.1</version> </dependency> -->

        <!-- mysql驱动 -->

        <dependency>

            <groupId>mysql</groupId>

            <artifactId>mysql-connector-java</artifactId>

            <version>5.1.6</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-tx</artifactId>

            <version>4.3.7.RELEASE</version>

        </dependency>

        <!-- 基本配置 -->

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>4.9</version>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>servlet-api</artifactId>

            <version>2.5</version>

            <scope>provided</scope>

        </dependency>

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>jsp-api</artifactId>

            <version>2.0</version>

            <scope>provided</scope>

        </dependency>

        <!-- Mybatis -->

        <dependency>

            <groupId>org.mybatis</groupId>

            <artifactId>mybatis</artifactId>

            <version>3.2.7</version>

        </dependency>

        <!-- Mybatis整合Spring -->

        <dependency>

            <groupId>org.mybatis</groupId>

            <artifactId>mybatis-spring</artifactId>

            <version>1.2.2</version>

        </dependency>

        <!-- 连接池 -->

        <dependency>

            <groupId>com.jolbox</groupId>

            <artifactId>bonecp-spring</artifactId>

            <version>0.8.0.RELEASE</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-jdbc</artifactId>

        </dependency>

    </dependencies>

    <build>

        <!-- 配置了很多插件 -->

        <plugins>

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-compiler-plugin</artifactId>

                <version>3.5.1</version>

                <configuration>

                    <source>1.7</source>

                    <target>1.7</target>

                    <encoding>UTF-8</encoding>

                </configuration>

            </plugin>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

2.启动测试：

　　总结:我在使用过程中一开始是采用方式二搭建的环境，并且也是基于方式二整合的Mybatis的Pagehelper。但是在打成jar包运行的时候一直报一个错误，在MybatisConfig报错，所以最后我选择采用第一种方式搭建环境。现在上面的git地址也是基于第一种方式整合，但是提交记录有基于第二种的。git上面的项目也正在完善。目前已经整合； SpringTask、freemarker、thymeleaf等。。。。

巴特西

springboot整合mybatis(SSM开发环境搭建)

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