Creating mybatis reverse engineering

1.mybatis reverse engineering (I'm using maven repository creation)

 

　　Working principle : reverse engineering (via database tables and field information to generate a corresponding method CRUD)

 

　　In fact, that is an automatic generation tool

　　Entity type (POJO) and mapping files (Mapper) dao layer interface methods also automatically generate a series of 

　　Generated basically simple logic code do not have to knock

　　Such as CRUD do not have to write it directly over the

　　

  The first step: plug mybatis reverse engineering package shelf

　pom.xml

 

<dependencies>
    <!--分页插件-->
    <dependency>
        <groupId>com.github.pagehelper</groupId>
        <artifactId>pagehelper</artifactId>
        <version>5.1.2</version>
    </dependency>

    
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-ehcache</artifactId>
        <version>1.0.0</version>
    </dependency>

    <!--控制台的-->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.26</version>
    </dependency>
    <!--控制台的-->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.6.6</version>
    </dependency>

    <!--连接数据库的-->
    <dependency>
        <groupId>com.oracle</groupId>
        <artifactId>ojdbc6</artifactId>
        <version>12.1.0.1-atlassian-hosted</version>
    </dependency>

    <!--mybatis的-->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.4.5</version>
    </dependency>

    <!--控制台的-->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
</dependencies>

<!--执行逆向工程的按钮-->
<build>
        <plugins>　　　
<plugin>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-maven-plugin</artifactId>
    <version>1.3.2 </Version > 
    < Configuration > 
        <-! path to the configuration file -> 
        < configurationFile > $ {/src/main/resources/generatorConfig.xml the basedir} </ configurationFile > 
        < Overwrite > to true </ Overwrite > 
    </ Configuration > 
    < ! - plug-in dependencies need to use -> 
    < the dependencies > 
        < dependency > 
            < groupId > com.oracle </ groupId > 
            < artifactId >ojdbc6 </artifactId>
            <version>11.2.0.3</version>
        </dependency>
    </dependencies>
</plugin>
　　　　</plugins> 

</build>

 

 

 

 Step Two: Configure generatorConfig.xml generate address 

 

　　

<? Xml Version = "1.0" encoding = "UTF-8" ?> 
<! DOCTYPE generatorConfiguration 
        the PUBLIC "- // mybatis.org//DTD the Configuration MyBatis Generator 1.0 // EN" 
        "http://mybatis.org/dtd /mybatis-generator-config_1_0.dtd " > 
< generatorConfiguration > 
    < context ID =" Test " targetRuntime =" MyBatis 3 " > 

        < commentGenerator > 
            <-! this element is used to specify annotation removal date is included in the generated generated it to true: It is false: NO -> 
            < Property name = "suppressDate" value = "to true" /> 
            <! - whether to remove the automatically generated annotations true: is: to false: NO-> 
            < Property name = "suppressAllComments" value = "to true"  /> 
        </ commentGenerator > 
        <-! Database link URL, user name, password -> 
        < JdbcConnection driverClass = "oracle.jdbc.driver.OracleDriver" 
                        connectionURL = "jdbc: oracle: thin: @localhost: 1521: database instance name" 
                        userId = "database username" password = "database password" > 
        </ JdbcConnection > 
        < javaTypeResolver > 
            <-! forced to use java.math.BigDecimal 类 -->
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>
        <!-- 生成模型的包名和位置 -->
        <javaModelGenerator targetPackage="com.seecen.entity"
                            targetProject="src/main/java">
            <property name="enableSubPackages" value="false" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!- <->the package name and location of the generated map file
        sqlMapGenerator targetPackage="resources.mapper"
                         targetProject="src/main/resource">
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        <!-- 生成DAO的包名和位置 -->
        <javaClientGenerator type="XMLMAPPER"
                             targetPackage="com.seecen.dao"
                             targetProject="src/main/java">
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>

        <!-- 要生成哪些表      表名           数据库名                  实体类名       -->
        <table  tableName="t_user_info" schema="sc" domainObjectName="UserInfo"
                enableCountByExample="false" enableUpdateByExample="false"
                enableDeleteByExample="false" enableSelectByExample="false"/>
        <table  tableName="Emp" domainObjectName="Emp" schema="sc" ->the removal of the front table user name, the default value to false<! ->
            
            <property name="ignoreQualifiersAtRuntime" value="true"/>
        </table>
    </context>
</generatorConfiguration>

 

 

 

 

 The third step: the implementation of mybatis-generator plugin 

 

 

 

 

 The last generation is completed

　　Note that if multiple time-table mapping file, the contents will be appended to xml , rather than covering

　　

 

        Example of use

 

　　　　XXXXExamlple   transfer conditions CRUD

 

　　　　Any of the conditions to achieve a correspondence table for each field in CRUD