mybatis代码生成的2种方式

mybatis使用方便，但是各种配置文件、bean及dao的重复书写很是烦人。幸好mybatis已经有了自动生成工具：常用的方式有命令行、maven、eclipse插件。下面，将介绍eclipse及maven的方式生成mybatis代码。

一、eclipse中使用插件生成代码

1.首先需要在eclipse中安装ibator插件

        打开网址(http://ibatis.apache.org/tools/ibator/)

根据说明，在eclipse中安装ibator插件，然后重启eclipse。

2.验证ibator插件是否安装成功

        在eclipse中依次点击：File–New–other，在搜索框中输入ib，如果出现如下所示，则说明安装成功。

3.新建java项目，在src下右键New–Other

点击Next，在File Name中输入ibatorConfig.xml，点击完成，就会在src下生存所需的配置文件。

4.ibatorConfig.xml配置

xml  version = "1.0"  encoding = "UTF-8"  ?>
DOCTYPE  ibatorConfiguration PUBLIC "-//Apache Software Foundation//DTD Apache iBATIS Ibator Configuration 1.0//EN" "http://ibatis.apache.org/dtd/ibator-config_1_0.dtd" >
< ibatorConfiguration >
< classPathEntry  location = "E:\***\sources\mysql\mysql-connector-java-5.1.15-bin.jar"  />
< ibatorContext  id = "context1" >
< jdbcConnection  driverClass = "com.mysql.jdbc.Driver"
connectionURL = "jdbc:mysql://localhost:3306/spring4mybatis"
userId = "root"  password = "******"  />


< javaModelGenerator  targetPackage = "com.ibator.model"
targetProject = "IbatorDemo"  />


< sqlMapGenerator  targetPackage = "com.ibator.mapper"
targetProject = "IbatorDemo"  />


< daoGenerator  targetPackage = "com.ibator.dao"
targetProject = "IbatorDemo"  implementationPackage = "com.ibator.dao.impl"
type = "IBATIS"  />


< table  schema = ""  tableName = "role" >












table >
ibatorContext >
ibatorConfiguration >

5.配置完成后，在该文件上右击，选择Generate IBATIS Artifacts，然后在IbatorDemo项目下就会看到生成的代码。

注：当使用的daoGenerator类型为SPRING时，生成的dao所继承的类为SqlMapClientDaoSupport，但是在spring 3.2之后该方法已经废弃，所以如果所用spring版本在3.2之后，应该使用org.mybatis.spring.support.SqlSessionDaoSupport。

二、maven生成mybatis代码

1.新建maven项目

2.修改pom.xml文件

< 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/maven-v4_0_0.xsd" >
< modelVersion >4.0.0 modelVersion >
< groupId >IbatorDemo groupId >
< artifactId >com.ibator artifactId >
< packaging >war packaging >
< version >0.0.1-SNAPSHOT version >
< name >IbatorDemo Maven Webapp name >
< url >http://maven.apache.org url >
< dependencies >
< dependency >
< groupId >junit groupId >
< artifactId >junit artifactId >
< version >3.8.1 version >
< scope >test scope >
dependency >
dependencies >

< build >
< finalName >IbatorDemo finalName >
< plugins >
< plugin >
< groupId >org.mybatis.generator groupId >
< artifactId >mybatis-generator-maven-plugin artifactId >
< version >1.3.2 version >
< configuration >
< verbose >true verbose >
< overwrite >true overwrite >
configuration >
plugin >
< plugin >
< groupId >org.mybatis.generator groupId >
< artifactId >mybatis-generator-maven-plugin artifactId >
< version >1.3.2 version >
plugin >
plugins >
build >
project >

3.在src/main/resources下建立配置文件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 >


< classPathEntry  location = "E:\****\sources\mysql\mysql-connector-java-5.1.15-bin.jar" />

< context  id = "DB2Tables"  targetRuntime = "MyBatis3" >

< commentGenerator >
< property  name = "suppressAllComments"  value = "true" />
commentGenerator >


< jdbcConnection  driverClass = "com.mysql.jdbc.Driver"  connectionURL = "jdbc:mysql://localhost:3306/spring4mybatis"  userId = "root"
password = "******" >
jdbcConnection >


< javaModelGenerator  targetPackage = "com.ibator.web.model"  targetProject = "src/main/java" >
< property  name = "enableSubPackages"  value = "ture" />
< property  name = "trimStrings"  value = "true" />
javaModelGenerator >


< sqlMapGenerator  targetPackage = "com.ibator.web.dao"  targetProject = "src/main/java" >
< property  name = "enableSubPackages"  value = "ture" />
sqlMapGenerator >


< javaClientGenerator  type = "XMLMAPPER"  targetPackage = "com.ibator.web.dao"  targetProject = "src/main/java" >
< property  name = "enableSubPackages"  value = "ture" />
javaClientGenerator >


< table  tableName = "user" >

table >
context >
generatorConfiguration >

4.项目上右键–run as–maven build

点击run，完成。

http://www.1024china.com/?p=94