使用mybatis-generator-core自動生成代碼

SSM框架可使用mybatis-generator-core-1.3.2.jar來自動生成代碼，如下是配置和使用的代碼。

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="testTables" targetRuntime="MyBatis3">
        <commentGenerator>
            <!-- 是否去除自動生成的註釋 true：是 ： false:否 -->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!--數據庫鏈接的信息：驅動類、鏈接地址、用戶名、密碼 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://localhost:3306/crm" userId="root"
            password="1111"> 
        </jdbcConnection> 
          <!-- 數據庫鏈接配置 sqlserver-->
        <!--<jdbcConnection driverClass="com.microsoft.sqlserver.jdbc.SQLServerDriver"
            connectionURL="jdbc:sqlserver://gsdy.eicp.net:8633;databasename=qkmls"
            userId="sa"
            password="sa@20170410" />-->
        
        <!--<jdbcConnection driverClass="oracle.jdbc.OracleDriver"
            connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:yycg" 
            userId="yycg"
            password="yycg">
            </jdbcConnection> -->

        <!-- 默認false，把JDBC DECIMAL 和 NUMERIC 類型解析爲 Integer，爲 true時把JDBC DECIMAL 和 
            NUMERIC 類型解析爲java.math.BigDecimal -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- targetProject:生成PO類的位置 -->
        <javaModelGenerator targetPackage="com.ma.core.po"
            targetProject=".\src">
            <!-- enableSubPackages:是否讓schema做爲包的後綴 -->
            <property name="enableSubPackages" value="false" />
            <!-- 從數據庫返回的值被清理先後的空格 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- targetProject:mapper映射文件生成的位置 -->
        <sqlMapGenerator targetPackage="com.ma.mapper" 
            targetProject=".\src">
            <!-- enableSubPackages:是否讓schema做爲包的後綴 -->
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        <!-- targetPackage：mapper接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER"
            targetPackage="com.ma.core.dao" 
            targetProject=".\src">
            <!-- enableSubPackages:是否讓schema做爲包的後綴 -->
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        <!-- 指定數據庫表 -->
        <table tableName="customer" schema=""/>
        <table tableName="sys_user" schema=""/>
        <table tableName="base_dict" schema=""/>

            <!-- <table schema="" tableName="T_Qk_Orders"></table>
            <table schema="" tableName="T_Qk_Orderitem"></table>
            <table schema="" tableName="T_Qk_Amount"></table> -->
        <!--<table schema="" tableName="tb_content"></table>
            <table schema="" tableName="tb_content_category"></table>
            <table schema="" tableName="tb_item"></table>
            <table schema="" tableName="tb_item_cat"></table>
            <table schema="" tableName="tb_item_desc"></table>
            <table schema="" tableName="tb_item_param"></table>
            <table schema="" tableName="tb_item_param_item"></table>
            <table schema="" tableName="tb_order"></table>
            <table schema="" tableName="tb_order_item"></table>
            <table schema="" tableName="tb_order_shipping"></table>
            <table schema="" tableName="tb_user"></table> -->

    </context>
</generatorConfiguration>

GeneratorSqlmap.java使用代碼

package com.ma.common.utils;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.exception.XMLParserException;
import org.mybatis.generator.internal.DefaultShellCallback;

public class GeneratorSqlmap {

    public void generator() throws Exception{

        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        //指定 逆向工程配置文件
        File configFile = new File("resource/generatorConfig.xml");
        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);

    } 
    public static void main(String[] args) throws Exception {
        try {
            GeneratorSqlmap generatorSqlmap = new GeneratorSqlmap();
            generatorSqlmap.generator();
        } catch (Exception e) {
            e.printStackTrace();
        }
        
    }

}

小結

把上面的配置文件和代碼，放到一個能夠運行的項目下運行就能夠了。根據本身的需求配置不一樣的數據源和生成代碼的位置。