mybatis-generator通过数据库表反向生成配置文件和类

一：下载jar包
下载  mysql-connector-java-5.1.17.jar 

 jar包来源：51cto、csdn,或者直接从网上下载
二：generatorConfig.xml 文件
存放路径：在项目工程下的：src/main/resources
<?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>
<!--mysql 连接数据库jar 这里选择自己本地位置 -->
<classPathEntry
location="D:/jars/mysql-connector-java-5.1.17.jar" />
<context id="testTables" targetRuntime="MyBatis3">
<commentGenerator>
<!-- 是否去除自动生成的注释 true：是 ： false:否 -->
<property name="suppressAllComments" value="true" />
</commentGenerator>
<!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://ip:port/dbname" userId="username"
password="password">
</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>
<!-- targetProject:生成PO类的位置 -->
<javaModelGenerator targetPackage="com.niiwoo.tc.entity"
targetProject="src/main/java">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="false" />
<!-- 从数据库返回的值被清理前后的空格 -->
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!-- targetProject:mapper映射文件生成的位置 如果maven工程只是单独的一个工程，targetProject="src/main/java" 
若果maven工程是分模块的工程，targetProject="所属模块的名称"，例如： targetProject="ecps-manager-mapper"，下同 -->
<sqlMapGenerator targetPackage="mapper"
targetProject="src/main/resources">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="false" />
</sqlMapGenerator>
<!-- targetPackage：mapper接口生成的位置 -->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.niiwoo.tc.mapper" targetProject="src/main/java">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="false" />
</javaClientGenerator>
<!-- 指定数据库表 -->
<table tableName="student" domainObjectName="student"></table>
</context>
</generatorConfiguration>

三：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>com.niiwoo.tc</groupId>
<artifactId>OrderSys</artifactId>
<version>0.0.1-SNAPSHOT</version>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<log4j-version>1.2.16</log4j-version>
<slf4j-api-version>1.7.21</slf4j-api-version>
<druid.version>1.0.14</druid.version>
<mysql.version>5.1.26</mysql.version>
<hessian.version>4.0.38</hessian.version>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<mybatis-generator.version>1.3.2</mybatis-generator.version>
<mybatis-version>3.1.1</mybatis-version>
<mybatis-spring-version>1.1.1</mybatis-spring-version>
<mysql-connector-java-version>5.1.38</mysql-connector-java-version>
</properties>

<dependencies>

<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j-version}</version>
</dependency>

<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j-api-version}</version>
</dependency>

<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j-api-version}</version><
4000
br /></dependency>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>

<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis-version}</version>
</dependency>

<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis-spring-version}</version>
</dependency>

</dependencies>

<build>
<plugins>

<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>${mybatis-generator.version}</version>
<configuration>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>
</plugins>
</build>

</project>

四：执行命令
右击-generatorConfig.xml-run as - run configurations -在 goals 中输入：mybatis-generator:generate
最好是使用右击pom.xml 再执行命令