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  • mybatis逆向工程三步走

    1.Maven依赖

    <!-- MBG -->
            <dependency>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-core</artifactId>
                <version>1.3.5</version>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.41</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.4.2</version>
            </dependency>

    2.编写mbg.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>
    
        <context id="DB2Tables" targetRuntime="MyBatis3">
    
            <commentGenerator>
                <!-- 是否去除自动生成的注释 true:是 : false:否 -->
                <property name="suppressAllComments" value="true" />
            </commentGenerator>
    
            <!-- 配置数据库连接 -->
            <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                            connectionURL="jdbc:mysql://localhost:3306/mybatisdemo" userId="root"
                            password="root">
            </jdbcConnection>
    
            <!-- 默认false,把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer,为 true时把JDBC DECIMAL 和
                NUMERIC 类型解析为java.math.BigDecimal -->
            <javaTypeResolver>
                <property name="forceBigDecimals" value="false" />
            </javaTypeResolver>
    
            <!-- 指定javaBean生成的位置 -->
            <javaModelGenerator targetPackage="com.eu.bean"
                                targetProject=".srcmainjava">
                <property name="enableSubPackages" value="true" />
                <property name="trimStrings" value="true" />
            </javaModelGenerator>
    
            <!--指定sql映射文件生成的位置 -->
            <sqlMapGenerator targetPackage="mapper" targetProject=".srcmain
    esources">
                <property name="enableSubPackages" value="true" />
            </sqlMapGenerator>
    
            <!-- 指定dao接口生成的位置,mapper接口 -->
            <javaClientGenerator type="XMLMAPPER"
                                 targetPackage="com.eu.dao" targetProject=".srcmainjava">
                <property name="enableSubPackages" value="true" />
            </javaClientGenerator>
    
    
            <!-- table指定每个表的生成策略 -->
            <table tableName="emp" domainObjectName="Emp"></table>
    
        </context>
    </generatorConfiguration>

    3.编写运行代码

    public static void main(String[] args) throws Exception {
            List<String> warnings = new ArrayList<String>();
            boolean overwrite = true;
            File configFile = new File("mbg.xml");
            ConfigurationParser cp = new ConfigurationParser(warnings);
            Configuration config = cp.parseConfiguration(configFile);
            DefaultShellCallback callback = new DefaultShellCallback(overwrite);
            MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config,
                    callback, warnings);
            myBatisGenerator.generate(null);
        }

    项目结构

                  

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  • 原文地址:https://www.cnblogs.com/wanerhu/p/14157694.html
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