Mybatis入门

<?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">
    <parent>
        <artifactId>redis</artifactId>
        <groupId>com.jt</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>mybatis01</artifactId>
    <packaging>war</packaging>

    <name>mybatis01 Maven Webapp</name>
    <!-- FIXME change it to the project‘s website -->
    <url>http://www.example.com</url>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <!-- ********************** junit单元测试依赖 ********************** -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

        <!-- ********************** Java Servlet API  ********************** -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.0</version>
            <scope>provided</scope>
        </dependency>

        <!-- ********************** Mybatis依赖 ********************** -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.5</version>
        </dependency>

        <!-- ********************** Mysql JDBC驱动 ********************** -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.44</version>
        </dependency>

        <!-- **********************  日志配置  ********************** -->
        <!--记得修改mybatis.cfg.xml添加如下内容-->
        <!--<setting name="logImpl" value="LOG4J2"/>-->
        <!--核心log4j2jar包-->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.9.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.9.1</version>
        </dependency>
        <!--web工程需要包含log4j-web，非web工程不需要-->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-web</artifactId>
            <version>2.9.1</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>compile</scope>
        </dependency>
    </dependencies>

    <build>
    <resources>

        <!--解决mybatis-generator-maven-plugin运行时没有将XxxMapper.xml文件放入target文件夹的问题-->
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.xml</include>
            </includes>
        </resource>
        <!--解决mybatis-generator-maven-plugin运行时没有将jdbc.properites文件放入target文件夹的问题-->
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                <include>jdbc.properties</include>
                <include>*.xml</include>
            </includes>
        </resource>
    </resources>

    <plugins>
        <plugin>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-maven-plugin</artifactId>
            <version>1.3.2</version>
            <dependencies>
                <!--使用Mybatis-generator插件不能使用太高版本的mysql驱动 -->
                <dependency>
                    <groupId>mysql</groupId>
                    <artifactId>mysql-connector-java</artifactId>
                    <version>5.1.44</version>
                </dependency>
            </dependencies>
            <configuration>
                <overwrite>true</overwrite>
            </configuration>
        </plugin>
    </plugins>
    </build>
</project>

<?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>
    <!-- 引入外部配置文件 -->
    <properties resource="jdbc.properties"/>

    <settings>
        <setting name="logImpl" value="LOG4J2"/>
    </settings>

    <!-- 别名 -->
    <typeAliases>
        <!--<typeAlias type="com.javaxl.model.Book" alias="Book"/>-->
    </typeAliases>


    <!-- 配置mybatis运行环境 -->
    <environments default="development">
        <environment id="development">
            <!-- type="JDBC" 代表使用JDBC的提交和回滚来管理事务 -->
            <transactionManager type="jdbc"/>

            <!-- mybatis提供了3种数据源类型，分别是：POOLED,UNPOOLED,JNDI -->
            <!-- POOLED 表示支持JDBC数据源连接池 -->
            <!-- UNPOOLED 表示不支持数据源连接池 -->
            <!-- JNDI 表示支持外部数据源连接池 -->
            <dataSource type="POOLED">
                <property name="driver"
                          value="${jdbc.driver}"/>
                <property name="url"
                          value="${jdbc.url}"/>
                <property name="username" value="${jdbc.username}"/>
                <property name="password" value="${jdbc.password}"/>
            </dataSource>
        </environment>
    </environments>

    <mappers>
        <mapper resource="com/jt/mapper/storageMapper.xml"/>
    </mappers>
</configuration>

<?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>
    <!-- 引入配置文件 -->
    <properties resource="jdbc.properties"/>

    <!--指定数据库jdbc驱动jar包的位置-->
    <classPathEntry location="D:\repository\mvn-repository\mysql\mysql-connector-java\5.1.44\mysql-connector-java-5.1.44.jar"/>

    <!-- 一个数据库一个context -->
    <context id="infoGuardian">
        <!-- 注释 -->
        <commentGenerator>
            <property name="suppressAllComments" value="true"/><!-- 是否取消注释 -->
            <property name="suppressDate" value="true"/> <!-- 是否生成注释代时间戳 -->
        </commentGenerator>

        <!-- jdbc连接 -->
        <jdbcConnection driverClass="${jdbc.driver}"
                        connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}"/>

        <!-- 类型转换 -->
        <javaTypeResolver>
            <!-- 是否使用bigDecimal， false可自动转化以下类型（Long, Integer, Short, etc.） -->
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>

        <!-- 01 指定javaBean生成的位置 -->
        <!-- targetPackage：指定生成的model生成所在的包名 -->
        <!-- targetProject：指定在该项目下所在的路径  -->
        <javaModelGenerator targetPackage="com.jt.model"
                            targetProject="src/main/java">
            <!-- 是否允许子包，即targetPackage.schemaName.tableName -->
            <property name="enableSubPackages" value="false"/>
            <!-- 是否对model添加构造函数 -->
            <property name="constructorBased" value="true"/>
            <!-- 是否针对string类型的字段在set的时候进行trim调用 -->
            <property name="trimStrings" value="false"/>
            <!-- 建立的Model对象是否 不可改变  即生成的Model对象不会有 setter方法，只有构造方法 -->
            <property name="immutable" value="false"/>
        </javaModelGenerator>

        <!-- 02 指定sql映射文件生成的位置 jt-->
        <sqlMapGenerator targetPackage="com.jt.mapper"
                         targetProject="src/main/java">
            <!-- 是否允许子包，即targetPackage.schemaName.tableName -->
            <property name="enableSubPackages" value="false"/>
        </sqlMapGenerator>

        <!-- 03 生成XxxMapper接口 -->
        <!-- type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象 -->
        <!-- type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象 -->
        <!-- type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口 -->
        <javaClientGenerator targetPackage="com.jt.mapper"
                             targetProject="src/main/java" type="XMLMAPPER">
            <!-- 是否在当前路径下新加一层schema,false路径com.oop.eksp.user.model， true:com.oop.eksp.user.model.[schemaName] -->
            <property name="enableSubPackages" value="false"/>
        </javaClientGenerator>

        <!-- 配置表信息 -->
        <!-- schema即为数据库名 -->
        <!-- tableName为对应的数据库表 -->
        <!-- domainObjectName是要生成的实体类 -->
        <!-- enable*ByExample是否生成 example类 -->
        <!--<table schema="" tableName="t_book" domainObjectName="Book"-->
        <!--enableCountByExample="false" enableDeleteByExample="false"-->
        <!--enableSelectByExample="false" enableUpdateByExample="false">-->
        <!--&lt;!&ndash; 忽略列，不生成bean 字段 &ndash;&gt;-->
        <!--&lt;!&ndash; <ignoreColumn column="FRED" /> &ndash;&gt;-->
        <!--&lt;!&ndash; 指定列的java数据类型 &ndash;&gt;-->
        <!--&lt;!&ndash; <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> &ndash;&gt;-->
        <!--</table>-->

        <table schema="" tableName="storage" domainObjectName="storage"
               enableCountByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false" enableUpdateByExample="false">
            <!-- 忽略列，不生成bean 字段 -->
            <!-- <ignoreColumn column="FRED" /> -->
            <!-- 指定列的java数据类型 -->
            <!-- <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> -->
        </table>

    </context>
</generatorConfiguration>

public interface StorageService {
    int deleteByPrimaryKey(Long stkId);

    int insert(storage record);

    int insertSelective(storage record);

    storage selectByPrimaryKey(Integer stkId);

    int updateByPrimaryKeySelective(storage record);

    int updateByPrimaryKey(storage record);
}

package com.jt.service.impl;

import com.jt.mapper.storageMapper;
import com.jt.model.storage;
import com.jt.service.StorageService;

public class StorageServiceImpl implements StorageService {
    public storageMapper getStoragemapper() {
        return storagemapper;
    }

    public void setStoragemapper(storageMapper storagemapper) {
        this.storagemapper = storagemapper;
    }

    private storageMapper storagemapper;

    @Override
    public int deleteByPrimaryKey(Long stkId) {
        return storagemapper.deleteByPrimaryKey(stkId);
    }

    @Override
    public int insert(storage record) {
        return storagemapper.insert(record);
    }

    @Override
    public int insertSelective(storage record) {
        return storagemapper.insertSelective(record);
    }

    @Override
    public storage selectByPrimaryKey(Integer stkId) {
        return storagemapper.selectByPrimaryKey(stkId);
    }

    @Override
    public int updateByPrimaryKeySelective(storage record) {
        return storagemapper.updateByPrimaryKeySelective(record);
    }

    @Override
    public int updateByPrimaryKey(storage record) {
        return storagemapper.updateByPrimaryKey(record);
    }
}

package com.jt.service;

import com.jt.mapper.storageMapper;
import com.jt.model.storage;
import com.jt.service.impl.StorageServiceImpl;
import com.jt.util.SessionUtil;
import org.apache.ibatis.session.SqlSession;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import static org.junit.Assert.*;

public class StorageServiceTest {

    private StorageService storageService;
    private SqlSession sqlSession;

    @Before
    public void setUp() throws Exception {
        StorageServiceImpl storageService=new StorageServiceImpl();
        SqlSession sqlSession= SessionUtil.openSession();
        storageMapper mapper=sqlSession.getMapper(storageMapper.class);
        storageService.setStoragemapper(mapper);
        this.storageService=storageService;
    }

    @Test
    public void insert() {
        storage s=new storage();
        s.setStkId(999);
        s.setStkProdId("mybatis插入");
        s.setStkWarehouse("mybatis插入");
        s.setStkWare("mybatis插入");
        s.setStkCount(1);
        s.setStkMemo("mybatis插入");
    }

    @Test
    public void selectByPrimaryKey() {
        storage storage = this.storageService.selectByPrimaryKey(8);
//        this.storageService.deleteByPrimaryKey(1);
        System.out.println(storage);
    }
    @After
    public void tearDown() throws Exception {
        sqlSession.commit();
        sqlSession.close();
    }
}