mybatis 代码生成器
依赖
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| <dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.0</version>
</dependency>
|
主类
MybatisGen.java
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|
package cn.zl;
import org.mybatis.generator.api.ShellRunner;
import java.io.File;
public class MybatisGen {
public static void main(String[] args) {
String type = args[0];
boolean isDelete = false;
if (args.length > 1 && "true".equals(args[1])) {
isDelete = true;
}
gen(type, isDelete);
}
public static void gen(String type, Boolean isDelete) {
String sepa = File.separator;
File xmlPath = new File("." + sepa + "src" + sepa + "main" + sepa + "resources" + sepa + "cn" + sepa + "zl" + sepa + "sqlmap");
System.out.println(xmlPath.getAbsolutePath());
if (xmlPath.exists() && isDelete) {
System.out.println("开始删除xml文件");
boolean b = deleteDir(xmlPath);
if (!b) {
return;
}
}
String config = MybatisGen.class.getClassLoader().getResource(type + "/generatorConfig.xml").getFile();
String[] arg = {"-configfile", config, "-overwrite"};
ShellRunner.main(arg);
}
private static boolean deleteDir(File dir) {
if (dir.isDirectory()) {
String[] children = dir.list();
if (children == null) {
return true;
}
for (String aChildren : children) {
boolean success = deleteDir(new File(dir, aChildren));
if (!success) {
return false;
}
}
}
System.out.println("删除xml：" + dir.getName());
return dir.delete();
}
}
|
配置文件
- generatorConfig.xml
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|
<?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>
<properties resource="MybatisConfig.properties"/>
<classPathEntry location="${jdbc.path}"/>
<context id="MySQLTables" targetRuntime="MyBatis3" defaultModelType="conditional">
<plugin type="org.mybatis.generator.plugins.EqualsHashCodePlugin"></plugin>
<plugin type="org.mybatis.generator.plugins.CaseInsensitiveLikePlugin"></plugin>
<plugin type="org.mybatis.generator.plugins.MapperConfigPlugin">
<property name="fileName" value="sqlMapperConfig.xml"/>
<property name="targetPackage" value="mybatis"/>
<property name="targetProject" value="src/main/resources"/>
</plugin>
<plugin type="org.mybatis.generator.plugins.SerializablePlugin"></plugin>
<plugin type="org.mybatis.generator.plugins.ToStringPlugin"></plugin>
<commentGenerator>
<property name="suppressAllComments" value="true"/>
<property name="suppressDate" value="true"/>
</commentGenerator>
<jdbcConnection driverClass="${jdbc.driverClass}" connectionURL="${jdbc.url}" userId="${jdbc.username}"
password="${jdbc.password}">
</jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<javaModelGenerator targetPackage="${mdb.javaModelGenerator.targetPackage}"
targetProject="${mdb.javaModelGenerator.targetProject}">
<property name="constructorBased" value="false"/>
<property name="enableSubPackages" value="false"/>
<property name="immutable" value="false"/>
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<sqlMapGenerator targetPackage="${mdb.sqlMapGenerator.targetPackage}"
targetProject="${mdb.sqlMapGenerator.targetProject}">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>
<javaClientGenerator type="XMLMAPPER" targetPackage="${mdb.javaClientGenerator.targetPackage}"
targetProject="${mdb.javaClientGenerator.targetProject}">
<property name="enableSubPackages" value="false"/>
</javaClientGenerator>
<table schema="${jdbc.username}" tableName="pay_order" domainObjectName="PayOrder">
<property name="constructorBased" value="false"/>
<property name="ignoreQualifiersAtRuntime" value="false"/>
<property name="immutable" value="false"/>
<property name="modelOnly" value="false"/>
<property name="useActualColumnNames" value="false"/>
</table>
</context>
</generatorConfiguration>
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- MybatisConfig.properties
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jdbc.path=D:/tools/apache-maven-3.2.5/repo/mysql/mysql-connector-java/5.1.34/mysql-connector-java-5.1.34.jar
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://192.168.174.128:3306/dongwanpoc?useUnicode=true&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=123456
mdb.javaModelGenerator.targetPackage=cn.zl.model
mdb.javaModelGenerator.targetProject=src/main/java
mdb.sqlMapGenerator.targetPackage=cn.zl.mapper
mdb.sqlMapGenerator.targetProject=src/main/resources
mdb.javaClientGenerator.type=XMLMAPPER
mdb.javaClientGenerator.targetPackage=cn.zl.mapper
mdb.javaClientGenerator.targetProject=src/main/java
|
oracle 注意点
- 类型对照表
Mybatis生成java文件时，数据库表字段类型与java类型对照表
| NUMBER 长度 |
JAVA 类型 |
| 1-4 |
short |
| 5-9 |
integer |
| 10-18 |
long |
| 18+ |
bigDecimal |
生成器 类型转换 规则
详见 类
org.mybatis.generator.internal.types.JavaTypeResolverDefaultImpl