mybatis---逆向工程（插件）

小灰灰 2024-03-22 23:15 108阅读 0赞

## 1.在pom.xml中添加插件 ##

<build>
            
            <plugins>
                
                <plugin>
                    
                    <groupId>org.mybatis.generator</groupId>
                    <artifactId>mybatis-generator-maven-plugin</artifactId>
                    <version>1.4.2</version>
                    
                    <configuration>
                        <overwrite>true</overwrite>
                    </configuration>
                    
                    <dependencies>
                        
                        <dependency>
                            <groupId>mysql</groupId>
                            <artifactId>mysql-connector-java</artifactId>
                            <version>8.0.33</version>
                        </dependency>
                    </dependencies>
                </plugin>
            </plugins>
        </build>

## 2.创建MyBatis的配置文件 ##

在`src/main/resources`下分别导入`mybatis-config.xml`、`jdbc.properties`、log-back`.xml`

**`mybatis-config.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>
        <properties resource="jdbc.properties"/>
    
        <typeAliases>
            <package name="com.mybatis.pojo"/>
        </typeAliases>
    
        <environments default="development">
            <environment id="development">
                <transactionManager type="JDBC"/>
                <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>
            <package name="com.mybatis.mapper"/>
        </mappers>
    </configuration>

**`jdbc.properties`**

jdbc.driver=com.mysql.jdbc.Driver
    jdbc.url=jdbc:mysql://localhost:3306/mybatis
    jdbc.username=root
    jdbc.password=123456

**log-back`.xml`**

<?xml version="1.0" encoding="UTF-8"?>
    <configuration debug="false">
        
        <property name="LOG_HOME" value="/home"/>
        
        <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
            <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncode
    r">
                
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logge
                    r{50} - %msg%n</pattern>
            </encoder>
        </appender>
        
        <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAp
    pender">
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRolling
    Policy">
                
                <FileNamePattern>${LOG_HOME}/TestWeb.log.%d{yyyy-MM-dd}.log</FileNamePattern>
                
                <MaxHistory>30</MaxHistory>
            </rollingPolicy>
            <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncode
    r">
                
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logge
                    r{50} - %msg%n</pattern>
            </encoder>
            
            <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTrig
    geringPolicy">
                <MaxFileSize>100MB</MaxFileSize>
            </triggeringPolicy>
        </appender>
        
        <logger name="com.apache.ibatis" level="TRACE"/>
        <logger name="java.sql.Connection" level="DEBUG"/>
        <logger name="java.sql.Statement" level="DEBUG"/>
        <logger name="java.sql.PreparedStatement" level="DEBUG"/>
        
        <root level="DEBUG">
            <appender-ref ref="STDOUT"/>
            <appender-ref ref="FILE"/>
        </root>
    </configuration>

## 3.创建逆向工程的配置文件 ##

> 文件名必须是：generatorConfig.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">
            
            <plugin type="org.mybatis.generator.plugins.UnmergeableXmlMappersPlugin"/>
    
            <commentGenerator>
                
                <property name="suppressDate" value="true"/>
                
                <property name="suppressAllComments" value="true"/>
            </commentGenerator>
            
            <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
                            connectionURL="jdbc:mysql://localhost:3306/test"
                            userId="root"
                            password="1234">
            </jdbcConnection>
            
            <javaModelGenerator targetPackage="com.fly.pojo" targetProject="src/main/java">
                
                <property name="enableSubPackages" value="true"/>
                
                <property name="trimStrings" value="true"/>
            </javaModelGenerator>
            
            <sqlMapGenerator targetPackage="com.fly.mapper" targetProject="src/main/resources">
                
                <property name="enableSubPackages" value="true"/>
            </sqlMapGenerator>
            
            <javaClientGenerator
                    type="xmlMapper"
                    targetPackage="com.fly.mapper"
                    targetProject="src/main/java">
                <property name="enableSubPackages" value="true"/>
            </javaClientGenerator>
            
            <table tableName="employee" domainObjectName="Employee"/>
        </context>
    </generatorConfiguration>

## 4.执行 ##

![11992fe3b9b8403cac0ce21748f697e9.png][]

出现BUILD SUCCESS就是创建成功了

![686f178d1a3245b18d22f82eb047e2ee.png][]

[11992fe3b9b8403cac0ce21748f697e9.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/5e5eecaf88204c46b20047cc0de031af.png
[686f178d1a3245b18d22f82eb047e2ee.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/1e46f8badbfd494a86dce7b72a5e00ed.png