mybatis之三剑客

川长思鸟来 2022-04-14 04:05 197阅读 0赞

<dependency>
          <groupId>com.github.pagehelper</groupId>
          <artifactId>pagehelper</artifactId>
          <version>4.1.0</version>
        </dependency>

<plugin>
              <groupId>org.mybatis.generator</groupId>
              <artifactId>mybatis-generator-maven-plugin</artifactId>
              <version>1.3.7</version>
            </plugin>

##  一.demo1 ##

1.配置pom文件

<?xml version="1.0" encoding="UTF-8"?>
    <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/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
    
        <groupId>com.lxy</groupId>
        <artifactId>mybatis_demo</artifactId>
        <version>1.0-SNAPSHOT</version>
    
        <packaging>war</packaging>
    
        <name>MybatisGenerateCode 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>MybatisGenerateCode</finalName>
            <plugins>
                <plugin>
                    
                    <groupId>org.mybatis.generator</groupId>
                    <artifactId>mybatis-generator-maven-plugin</artifactId>
                    <version>1.3.7</version>
                    <configuration>
                        
                        <configurationFile>src/main/resources/mybatis-generatorConfig/generatorConfig.xml
                        </configurationFile>
                        <verbose>true</verbose>
                        <overwrite>true</overwrite>
                    </configuration>
                    <dependencies>
                        <dependency>
                            <groupId>log4j</groupId>
                            <artifactId>log4j</artifactId>
                            <version>1.2.17</version>
                        </dependency>
                        <dependency>
                            <groupId>org.mybatis</groupId>
                            <artifactId>mybatis</artifactId>
                            <version>3.2.6</version>
                        </dependency>
                        <dependency>
                            <groupId>mysql</groupId>
                            <artifactId>mysql-connector-java</artifactId>
                            <version>5.1.30</version>
                        </dependency>
                    </dependencies>
                </plugin>
            </plugins>
        </build>
    </project>

2.resources下增加配置文件（mybatis-generatorConfig/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>
    
    <property name="suppressAllComments" value="true" />
    </commentGenerator>
    
    <jdbcConnection driverClass="com.mysql.jdbc.Driver"
    connectionURL="jdbc:mysql://localhost:3306/imooc-demo"
    userId="root"
    password="root">
    </jdbcConnection>
    
    <javaTypeResolver>
    <property name="forceBigDecimals" value="false" />
    </javaTypeResolver>
    
    
    <javaModelGenerator targetPackage="main/java/po"
    targetProject="src">
    
    <property name="enableSubPackages" value="false" />
    
    <property name="trimStrings" value="true" />
    </javaModelGenerator>
    
    <sqlMapGenerator targetPackage="main/java/mapper"
    targetProject="src">
    
    <property name="enableSubPackages" value="false" />
    </sqlMapGenerator>
    
    <javaClientGenerator type="XMLMAPPER"
    targetPackage="mapper"
    targetProject="src">
    
    <property name="enableSubPackages" value="false" />
    </javaClientGenerator>
    
    
        <table tableName="mmall_shipping" domainObjectName="Shipping" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
      
        <table tableName="mmall_user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
    
    
    
    </context>
    </generatorConfiguration>

3.执行插件

## 二.demo2 ##

2.1 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="datasource.properties"></properties>
    
        
        <classPathEntry location="${db.driverLocation}"/>
    
        <context id="default" targetRuntime="MyBatis3">
    
            
            <commentGenerator>
                <property name="suppressDate" value="true"/>
                <property name="suppressAllComments" value="true"/>
            </commentGenerator>
    
            
            <jdbcConnection
                    driverClass="${db.driverClassName}"
                    connectionURL="${db.url}"
                    userId="${db.username}"
                    password="${db.password}">
            </jdbcConnection>
    
    
            
            <javaTypeResolver>
                <property name="forceBigDecimals" value="false"/>
            </javaTypeResolver>
    
    
            
            
            <javaModelGenerator targetPackage="com.mmall.pojo" targetProject="./src/main/java">
                
                <property name="enableSubPackages" value="false"/>
                
                <property name="constructorBased" value="true"/>
                
                <property name="trimStrings" value="true"/>
                
                <property name="immutable" value="false"/>
            </javaModelGenerator>
    
            
            
            <sqlMapGenerator targetPackage="mappers" targetProject="./src/main/resources">
                <property name="enableSubPackages" value="false"/>
            </sqlMapGenerator>
    
            
    
            
            
            <javaClientGenerator type="XMLMAPPER" targetPackage="com.mmall.dao" targetProject="./src/main/java">
                
                <property name="enableSubPackages" value="false" />
            </javaClientGenerator>
    
    
            <table tableName="mmall_shipping" domainObjectName="Shipping" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
    
            <table tableName="mmall_user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
    
    
            
        </context>
    </generatorConfiguration>

2.2 datasource.properties

db.driverLocation=/Users/imooc/mysql-connector-java-5.1.6-bin.jar
    db.driverClassName=com.mysql.jdbc.Driver
    #db.url=jdbc:mysql://192.1.1.1:3306/mmall?characterEncoding=utf-8
    db.url=jdbc:mysql://你的数据库IP:你的数据库Port/你的database?characterEncoding=utf-8
    db.username=mmall
    db.password=dbpassword
    db.initialSize = 20
    db.maxActive = 50
    db.maxIdle = 20
    db.minIdle = 10
    db.maxWait = 10
    db.defaultAutoCommit = true
    db.minEvictableIdleTimeMillis = 3600000

附案例：[https://download.csdn.net/download/riju4713/10805864][https_download.csdn.net_download_riju4713_10805864]

[https_download.csdn.net_download_riju4713_10805864]: https://download.csdn.net/download/riju4713/10805864