MyBatise的自动生成代码功能

1、依赖

<!-- 自动生成实体类 -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.2</version>
</dependency>

2、首先是配置文件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>
<properties resource="jdbc.properties" />
<context id="sqlserverTables" targetRuntime="MyBatis3">
<!-- 生成的pojo，将implements Serializable-->
<plugin type="org.mybatis.generator.plugins.SerializablePlugin"></plugin>
<commentGenerator>
<!-- 是否去除自动生成的注释 true：是 ： false:否 -->
<property name="suppressAllComments" value="true" />
</commentGenerator>

<!-- 数据库链接URL、用户名、密码 -->
<jdbcConnection driverClass="com.microsoft.sqlserver.jdbc.SQLServerDriver"
connectionURL="jdbc:sqlserver://192.168.0.152:1433;databaseName=deerChain"
userId="sa"
password="198745">
</jdbcConnection>

<!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer true，把JDBC DECIMAL
和 NUMERIC 类型解析为java.math.BigDecimal -->
<javaTypeResolver>
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>

<!-- 生成model模型，对应的包路径，以及文件存放路径(targetProject)，targetProject可以指定具体的路径,如./src/main/java，
也可以使用“MAVEN”来自动生成，这样生成的代码会在target/generatord-source目录下 -->
<!--<javaModelGenerator targetPackage="com.joey.mybaties.test.pojo" targetProject="MAVEN"> -->
<javaModelGenerator targetPackage="com.deerChain.entity"
targetProject="./src/main/java">
<property name="enableSubPackages" value="true" />
<!-- 从数据库返回的值被清理前后的空格 -->
<property name="trimStrings" value="true" />
</javaModelGenerator>

<!--对应的mapper.xml文件 -->
<sqlMapGenerator targetPackage="com/daoMapper"
targetProject="./src/main/resources">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>

<!-- 对应的Mapper接口类文件 -->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.deerChain.dao" targetProject="./src/main/java">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>


<!-- 列出要生成代码的所有表，这里配置的是不生成Example文件 -->
<table tableName="CFC_EVALUATION" domainObjectName="CfcEvaluation"
enableCountByExample="false"
enableUpdateByExample="false"
enableDeleteByExample="false"
enableSelectByExample="false"
selectByExampleQueryId="true">
<property name="useActualColumnNames" value="false" />
<generatedKey column="id" sqlStatement="Mysql" identity="true"/>
</table>


<!-- <table tableName="%"
enableCountByExample="false"
enableDeleteByExample="false"
enableSelectByExample="false"
enableUpdateByExample="false"
selectByExampleQueryId="true"
>
<property name="useActualColumnNames" value="false" />
<generatedKey column="id" sqlStatement="Mysql" identity="true"/>
</table> -->
</context>
</generatorConfiguration>

3、调用main

public static void main(String[] args) throws SQLException {

Connection conn = (Connection) DriverManager.getConnection("mysql:\localhost:1520", "root", "root");
PreparedStatement preStatement = (PreparedStatement) conn.prepareStatement("select distinct loan_type from loan where bank=?");
preStatement.setString(1, "Citibank");



// ResultSet result = preStatement.executeQuery();

List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
String genCfg = "/mbgConfiguration.xml";
File configFile = new File(Test.class.getResource(genCfg).getFile());
ConfigurationParser cp = new ConfigurationParser(warnings);
Configuration config = null;
try {
config = cp.parseConfiguration(configFile);
} catch (IOException e) {
e.printStackTrace();
} catch (XMLParserException e) {
e.printStackTrace();
}
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
MyBatisGenerator myBatisGenerator = null;
try {
myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
} catch (InvalidConfigurationException e) {
e.printStackTrace();
}
try {
myBatisGenerator.generate(null);
} catch (SQLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}