mybatis_自动生成工具
1. 下载mybatis-generator-core工具包：
mybatis-generator-core.1.3.1下载路径：http://www.cnd8.com/downinfo/8521.html
解压后目录如下：
mybatis-generator-core最新版本为1.3.5，下载路径：
https://github.com/mybatis/generator/releases
解压后目录如下：
2. 加包
如1.3.5，lib目录内容如下：
添加mysql-connector-java-5.1.38.jar
3. 创建xml文件
在lib目录下创建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="mysql-connector-java-5.1.38.jar"/>
<context id="DB2Tables" targetRuntime="MyBatis3">
<commentGenerator>
<property name="suppressDate" value="true"/>
<property name="suppressAllComments" value="true"/>
commentGenerator>
<jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost/test" userId="root" password="123qwe">
jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
javaTypeResolver>
<javaModelGenerator targetPackage="lcw.model" targetProject="src">
<property name="enableSubPackages" value="true"/>
<property name="trimStrings" value="true"/>
javaModelGenerator>
<sqlMapGenerator targetPackage="lcw.mapping" targetProject="src">
<property name="enableSubPackages" value="true"/>
sqlMapGenerator>
<javaClientGenerator type="XMLMAPPER" targetPackage="lcw.dao" targetProject="src">
<property name="enableSubPackages" value="true"/>
javaClientGenerator>
<table tableName="t_person" domainObjectName="Person" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false">table>
context>
generatorConfiguration>
其中需要修改的都已标记，targetProject为生成的文件路径，tableName为表名，domainObjectName为实体类名
4. 执行命令
Cmd定位到lib目录：
执行命令：java -jar mybatis-generator-core-1.3.5.jar -configfile generatorConfig.xml -overwrite
此时在src目录下生成了lcw目录，其下有三个目录：
5. 查看结果：
1.model：
package lcw.model;
import java.math.BigDecimal;
public class Person {
private Integer id;
private String name;
private String password;
private BigDecimal account;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name == null ? null : name.trim();
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password == null ? null : password.trim();
}
public BigDecimal getAccount() {
return account;
}
public void setAccount(BigDecimal account) {
this.account = account;
}
}
2.接口文件
package lcw.dao;
import lcw.model.Person;
public interface PersonMapper {
int deleteByPrimaryKey(Integer id);
int insert(Person record);
int insertSelective(Person record);
Person selectByPrimaryKey(Integer id);
int updateByPrimaryKeySelective(Person record);
int updateByPrimaryKey(Person record);
}
2.映射文件
xml version="1.0" encoding="UTF-8"?>
DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="lcw.dao.PersonMapper">
<resultMap id="BaseResultMap" type="lcw.model.Person">
<id column="id" jdbcType="INTEGER" property="id" />
<result column="name" jdbcType="VARCHAR" property="name" />
<result column="password" jdbcType="VARCHAR" property="password" />
<result column="account" jdbcType="DECIMAL" property="account" />
resultMap>
<sql id="Base_Column_List">
id, name, password, account
sql>
<select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
select
<include refid="Base_Column_List" />
from t_person
where id = #{id,jdbcType=INTEGER}
select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
delete from t_person
where id = #{id,jdbcType=INTEGER}
delete>
<insert id="insert" parameterType="lcw.model.Person">
insert into t_person (id, name, password,
account)
values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR},
#{account,jdbcType=DECIMAL})
insert>
<insert id="insertSelective" parameterType="lcw.model.Person">
insert into t_person
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="id != null">
id,
if>
<if test="name != null">
name,
if>
<if test="password != null">
password,
if>
<if test="account != null">
account,
if>
trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="id != null">
#{id,jdbcType=INTEGER},
if>
<if test="name != null">
#{name,jdbcType=VARCHAR},
if>
<if test="password != null">
#{password,jdbcType=VARCHAR},
if>
<if test="account != null">
#{account,jdbcType=DECIMAL},
if>
trim>
insert>
<update id="updateByPrimaryKeySelective" parameterType="lcw.model.Person">
update t_person
<set>
<if test="name != null">
name = #{name,jdbcType=VARCHAR},
if>
<if test="password != null">
password = #{password,jdbcType=VARCHAR},
if>
<if test="account != null">
account = #{account,jdbcType=DECIMAL},
if>
set>
where id = #{id,jdbcType=INTEGER}
update>
<update id="updateByPrimaryKey" parameterType="lcw.model.Person">
update t_person
set name = #{name,jdbcType=VARCHAR},
password = #{password,jdbcType=VARCHAR},
account = #{account,jdbcType=DECIMAL}
where id = #{id,jdbcType=INTEGER}
update>
mapper>