1、預設application.properties配置檔案增加多資料來源配置，也可另行自己增加新的配置檔案獨立維護

## master資料來源[主端業務]：用於mybatis自動程式碼生成呼叫及spring對資料庫的系列操作
master.datasource.url=jdbc\:mysql\://*.*.*.*\:28801/PMDB?useUnicode=true&amp&characterEncoding=utf-8&useSSL=false
master.datasource.username=root
master.datasource.password=root
master.datasource.driver-class-name=com.mysql.jdbc.Driver

## cluster資料來源[小品牌業務]：用於mybatis自動程式碼生成呼叫及spring對資料庫的系列操作
cluster.datasource.url=jdbc\:mysql\://*.*.*.*:28801/jdd_ticket?useUnicode=true&amp&characterEncoding=utf-8&useSSL=false
cluster.datasource.username=root
cluster.datasource.password=root
cluster.datasource.driver-class-name=com.mysql.jdbc.Driver
 

2、Mybatis配置檔案中根據配置項自動生成不同庫的業務程式碼，配置檔案內容為：

<?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="application.properties" />
	<!-- 指定資料連線驅動jar地址 -->
	<!-- <classPathEntry location="${driverPath}" /> -->
	<!-- 此處指定生成針對MyBatis3的DAO -->
	<context id="context" targetRuntime="MyBatis3">
		<plugin type="org.mybatis.generator.plugins.SerializablePlugin" />
		<plugin type="org.mybatis.generator.plugins.EqualsHashCodePlugin" />
		<plugin type="org.mybatis.generator.plugins.ToStringPlugin" />
		<plugin type="org.mybatis.generator.plugins.RenameExampleClassPlugin">
			<property name="searchString" value="Example$" />
			<property name="replaceString" value="Criteria" />
		</plugin>
		<!-- 去掉生成出來的程式碼的註解 -->
		<commentGenerator>
			<property name="suppressAllComments" value="true" />
			<property name="suppressDate" value="true" />
		</commentGenerator>

		<!-- jdbc連線資訊 -->
		<jdbcConnection driverClass="${cluster.datasource.driver-class-name}" connectionURL="${cluster.datasource.url}" userId="${cluster.datasource.username}" password="${cluster.datasource.password}">
		</jdbcConnection>

		<!-- 預設false，表示把JDBC DECIMAL 和 NUMERIC 型別解析為 Integer; true表示把JDBC DECIMAL 和 NUMERIC 型別解析為java.math.BigDecimal -->
		<javaTypeResolver>
			<property name="forceBigDecimals" value="false" />
		</javaTypeResolver>

		<!-- 生成bean物件 -->
		<javaModelGenerator targetPackage="${target_package}.model" targetProject="./src/main/java">
			<!-- enableSubPackages:是否讓schema作為包的字尾 -->
			<property name="enableSubPackages" value="true" />
			<!-- 從資料庫返回的值被清理前後的空格 -->
			<property name="trimStrings" value="true" />
		</javaModelGenerator>

		<!-- 生成sqlMap xml -->
		<sqlMapGenerator targetPackage="${target_package}.cluster.mapping" targetProject="./src/main/java">
			<property name="enableSubPackages" value="true" />
		</sqlMapGenerator>

		<!-- 生成DAO的類檔案 -->
		<javaClientGenerator targetPackage="${target_package}.cluster.dao" targetProject="./src/main/java" type="XMLMAPPER">
			<property name="enableSubPackages" value="true" />
		</javaClientGenerator>


		<!-- <table tableName="t_system" domainObjectName="CaseSystem"></table> <table tableName="t_funcrole" domainObjectName="Funcrole"></table> <table tableName="t_function" domainObjectName="Function"></table> <table tableName="t_role" domainObjectName="Role"></table> <table tableName="t_case" domainObjectName="Case"></table> <table tableName="t_result_detail" domainObjectName="ResultDetail"></table> <table tableName="t_result" domainObjectName="Result"></table> -->
		<table tableName="t_ticketcase" domainObjectName="TicketCase">
			<columnOverride column="header" javaType="java.lang.String" jdbcType="VARCHAR" />
			<columnOverride column="params" javaType="java.lang.String" jdbcType="VARCHAR" />
		</table>
	</context>
</generatorConfiguration>
 

3、根據Mybatis外掛，封裝自動生成方法

package com.jdd.itesting;

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.exception.InvalidConfigurationException;
import org.mybatis.generator.exception.XMLParserException;
import org.mybatis.generator.internal.DefaultShellCallback;
import java.io.File;
import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;


/**
 * 通過mybatis框架命令執行生成程式碼
 * @author cristin
 * @version $Id: MyGenerator.java, v 0.1 2018年4月24日 下午10:55:14 cristin Exp $
 */
public class MyGenerator
{

	public static void main(String[] args) throws IOException, XMLParserException, InvalidConfigurationException, SQLException, InterruptedException
	{
		boolean overwrite = true;
		File directory = new File(".");

		/** 專案中/src/main */
		String mainPath = directory.getCanonicalPath() + File.separator + "src" + File.separator;

		/** 專案中/src/main/resources/generatorConfig.xml */
		String generatorConfigPath = mainPath + "main" + File.separator + "resources" + File.separator + "generatorConfig.xml";
		System.out.println("generatorConfig.xml=" + generatorConfigPath + " mainPath " + mainPath);
		File configFile = new File(generatorConfigPath);

		List<String> warnings = new ArrayList<String>();
		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);
		System.out.println("Success");
	}
}