逆向工程详解

         逆向工程，有的人也叫反求工程，英文是reverse engineering。 　　逆向工程（reverse engineering）大意是根据已有的东西和结果，通过分析来推导出具体的实现方法。比如你看到别人写的某个exe程序能够做出某种漂亮的动画效果，你通过反汇编、反编译和动态跟踪等方法，分析出其动画效果的实现过程，这种行为就是逆向工程；不仅仅是反编译，而且还要推倒出设计，并且文档化，逆向软件工程的目的是使软件得以维护。

        项目结构

pom.xml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.scm</groupId>
    <artifactId>generator</artifactId>
    <version>1.0-SNAPSHOT</version>


   <dependencies>
       <dependency>
           <groupId>mysql</groupId>
           <artifactId>mysql-connector-java</artifactId>
           <version>5.1.34</version>
       </dependency>
   </dependencies>

    <build>

        <plugins>
            <!--逆向工程的插件-->
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.5</version>
                <configuration>
                    <verbose>true</verbose>
                    <overwrite>true</overwrite>
                </configuration>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>


</project>

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>
    <!-- 配置mysql 驱动jar包路径.用了绝对路径 -->
    <classPathEntry location="D:\mavenworkspace\repository\mysql\mysql-connector-java\5.1.34\mysql-connector-java-5.1.34.jar" />

    <context id="scm_mysql_tables" targetRuntime="MyBatis3">
        <!-- 防止生成的代码中有很多注释，加入下面的配置控制 -->
        <commentGenerator>
            <property name="suppressAllComments" value="true" />
            <property name="suppressDate" value="true" />
        </commentGenerator>

        <!-- 数据库连接 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
        connectionURL="jdbc:mysql://localhost:3306/easybuy?characterEncoding=UTF-8"
                        userId="root"
                        password="123">
        </jdbcConnection>

        <javaTypeResolver >
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- 数据表对应的model层  -->
        <javaModelGenerator targetPackage="cn.hd.entity"
                            targetProject="src">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!-- sql mapper 映射配置文件 -->
        <sqlMapGenerator targetPackage="cn.hd.mapper"
                         targetProject="src">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!-- mybatis3中的mapper接口 -->
        <javaClientGenerator type="XMLMAPPER"
                             targetPackage="cn.hd.mapper"
                             targetProject="src">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!-- 数据表进行生成操作 schema:相当于库名; tableName:表名;
            domainObjectName:对应的DO
        -->
        <table schema="easybuy" tableName="easybuy_news" domainObjectName="News"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false">
        </table>
        <table schema="easybuy" tableName="easybuy_order" domainObjectName="Order"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false">
        </table>
        <table schema="easybuy" tableName="easybuy_order_detail" domainObjectName="OrderDetail"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false">
        </table>
        <table schema="easybuy" tableName="easybuy_product" domainObjectName="Product"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false">
        </table>
        <table schema="easybuy" tableName="easybuy_product_category" domainObjectName="ProductCategory"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false">
        </table>
        <table schema="easybuy" tableName="easybuy_user" domainObjectName="User"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false">
        </table>
        <table schema="easybuy" tableName="easybuy_user_address" domainObjectName="UserAddress"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false">
        </table>

    </context>
</generatorConfiguration>