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spring boot配置mybatis代码自动生成（mybatis通用mapper相关基础代码自动生成）

2017-09-30 11:33 1656 查看

一、建立一个spring boot项目，在pom.xml文件中进入mybatis自动生成代码相关的jar包：

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns="http://maven.apache.org/POM/4.0.0"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>tk.mybatis</groupId>

<artifactId>mybatis-spring-boot</artifactId>

<version>1.0.0-SNAPSHOT</version>

<parent>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

<version>1.5.6.RELEASE</version>

</parent>

<properties>

<java.version>1.8</java.version>

<mybatis.spring.version>1.2.4</mybatis.spring.version>

</properties>

<dependencies>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-jdbc</artifactId>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-aop</artifactId>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-freemarker</artifactId>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-test</artifactId>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-devtools</artifactId>

<optional>true</optional>

</dependency>

<dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

</dependency>

<dependency>

<groupId>com.fasterxml.jackson.core</groupId>

<artifactId>jackson-core</artifactId>

</dependency>

<dependency>

<groupId>com.fasterxml.jackson.core</groupId>

<artifactId>jackson-databind</artifactId>

</dependency>

<dependency>

<groupId>com.fasterxml.jackson.datatype</groupId>

<artifactId>jackson-datatype-joda</artifactId>

</dependency>

<dependency>

<groupId>com.fasterxml.jackson.module</groupId>

<artifactId>jackson-module-parameter-names</artifactId>

</dependency>

<dependency>

<groupId>com.alibaba</groupId>

<artifactId>druid</artifactId>

<version>1.0.11</version>

</dependency>



<dependency>

<groupId>org.mybatis.spring.boot</groupId>

<artifactId>mybatis-spring-boot-starter</artifactId>

<version>RELEASE</version>

</dependency>



<dependency>

<groupId>tk.mybatis</groupId>

<artifactId>mapper-spring-boot-starter</artifactId>

<version>RELEASE</version>

</dependency>



<dependency>

<groupId>com.github.pagehelper</groupId>

<artifactId>pagehelper-spring-boot-starter</artifactId>

<version>RELEASE</version>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-configuration-processor</artifactId>

<optional>true</optional>

</dependency>

<dependency>

<groupId>com.alibaba</groupId>

<artifactId>druid-spring-boot-starter</artifactId>

<version>1.1.0</version>

</dependency>

<dependency>

<groupId>org.mybatis.generator</groupId>

<artifactId>mybatis-generator-core</artifactId>

<version>1.3.2</version>

</dependency>

</dependencies>

<build>

<plugins>

<plugin>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-maven-plugin</artifactId>

<dependencies>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>springloaded</artifactId>

<version>1.2.5.RELEASE</version>

</dependency>

</dependencies>

</plugin>

<plugin>

<groupId>org.mybatis.generator</groupId>

<artifactId>mybatis-generator-maven-plugin</artifactId>

<version>1.3.2</version>

<configuration>

<configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>

<overwrite>true</overwrite>

<verbose>true</verbose>

</configuration>

<dependencies>

<dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

<version>${mysql.version}</version>

</dependency>

<dependency>

<groupId>tk.mybatis</groupId>

<artifactId>mapper</artifactId>

<version>3.4.0</version>

</dependency>

</dependencies>

</plugin>

</plugins>

</build>

</project>

二、修改项目配置文件application.properties：

spring.mvc.view.prefix=/templates/

spring.mvc.view.suffix=.ftl

spring.freemarker.cache=false

spring.freemarker.request-context-attribute=request

# mybatis \u914D\u7F6E

mybatis.type-aliases-package=com.springboot.wlwglpt.bean

mybatis.mapper-locations=classpath:mapper/*.xml

# \u901A\u7528 Mapper \u914D\u7F6E

mapper.mappers=MyMapper

mapper.not-empty=false

mapper.identity=MYSQL

# \u5206\u9875\u63D2\u4EF6\u914D\u7F6E

pagehelper.helperDialect=mysql

pagehelper.reasonable=true

pagehelper.supportMethodsArguments=true

pagehelper.params=count=countSql

#数据库配置

druid.driver-class=com.mysql.jdbc.Driver

druid.url=jdbc:mysql://localhost:3306/wlw

druid.username=root

druid.password=root

注意： <configurationFile>标签中配置的是“generatorConfig.xml”文件位置。

三、在resource文件夹下建立子文件夹“generator”，在该子文件夹下建立mybatis代码自动生成配置文件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>

<properties resource="application.properties"/>

<context id="Mysql" targetRuntime="MyBatis3Simple" defaultModelType="flat">

<property name="beginningDelimiter" value="`"/>

<property name="endingDelimiter" value="`"/>

<plugin type="tk.mybatis.mapper.generator.MapperPlugin">

<property name="mappers" value="com.springboot.MyMapper"/>

</plugin>

<jdbcConnection driverClass="${druid.driver-class}"

connectionURL="${druid.url}"

userId="${druid.username}"

password="${druid.password}">

</jdbcConnection>

<javaModelGenerator targetPackage="com.springboot.wlwglpt.bean" targetProject="src/main/java"/>

<sqlMapGenerator targetPackage="com.springboot.wlwglpt.mapper" targetProject="src/main/java"/>

<javaClientGenerator targetPackage="com.springboot.wlwglpt.mapper" targetProject="src/main/java"

type="XMLMAPPER"/>



<table tableName="%">



<generatedKey column="id" sqlStatement="Mysql" identity="true"/>

</table>





</context>

</generatorConfiguration>

四、在src/main目录下建立java文件夹，建立子文件夹“com”->"springboot",其下建立“MyMapper.java”文件：

package com.springboot;

import tk.mybatis.mapper.common.Mapper;

import tk.mybatis.mapper.common.MySqlMapper;

/**

* 继承自己的MyMapper

* @author Chen,Shunhua

*/

public interface MyMapper<T> extends Mapper<T>, MySqlMapper<T> {

//TODO

//FIXME 特别注意，该接口不能被扫描到，否则会出错

}

五、可以在com文件夹下建立代码自动生成类MybatisGeneratorUtil：

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;

/**

* mybatis代码自动生成启动类

* 不需要生成所有表对应代码，请到generatorConfig.xml文件中的<table>标签中进行配置

* 参照网址：http://blog.csdn.net/a_piaoyouareminemine/article/details/50114721

* @param args

*/

public class MybatisGeneratorUtil {
public static void main(String[] args) {
try {
System.out.println("start generator ...");
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
File configFile = new File(MybatisGeneratorUtil.class.getResource("/generator/generatorConfig.xml").getFile());
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("end generator!");
} catch (IOException e) {
e.printStackTrace();
} catch (XMLParserException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} catch (InvalidConfigurationException e) {
e.printStackTrace();
}
}

}

六、生成代码方法：

（1）选中pom.xml文件，选择“run as”->"Maven build",输入：mybatis-generator:generate命令执行；

（2）右击MybatisGeneratorUtil.java,选择“run as”->"java application"生成文件。

七、配置文件说明：

（1）、默认是mysql数据库，数据库信息配置在application.properties中进行修改；

（2）、JavaBean、mapper相关文件的包名在generatorConfig.xml中配置；

（3）、mapper.xml文件中javaBean的路径在application.properties中的mybatis.type-aliases-package中进行配置；

（4）、MyMapper的文件位置在generatorConfig.xml文件中的<plugin>标签中进行配置；

（5）、需保证自己项目中的MyMapper.java文件的位置跟这个项目一致；不一致请按照第4点进行修改；

八、项目目录结构

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