项目学习(一)逆向工程学习

xuhaoyu_cpp_java2026-06-05 14:14

一、搭建数据库环境

1.创建数据库

2.设计数据库模型

3.数据库的导出脚本

sql 复制代码 
/*==============================================================*/
/* DBMS name:      MySQL 5.0                                    */
/* Created on:     2019/10/14 10:40:43                          */
/*==============================================================*/


drop table if exists ALBUM;

drop table if exists COMMENT;

drop table if exists MTYPE;

drop table if exists SONG;

drop table if exists SONGER;

drop table if exists TX_USER;

/*==============================================================*/
/* Table: ALBUM                                                 */
/*==============================================================*/
create table ALBUM
(
   AID                  int(10) not null auto_increment,
   ANAME                varchar(100),
   PIC                  varchar(200),
   COMPANY              varchar(50),
   PDATE                date,
   LANG                 varchar(50),
   primary key (AID)
);

/*==============================================================*/
/* Table: COMMENT                                               */
/*==============================================================*/
create table COMMENT
(
   COMMENT_ID           int(10) not null auto_increment,
   COM_COMMENT_ID       int(10),
   USER_ID              int(10),
   COMMENT_CONTENT      text,
   Z_COUNT              int(10),
   primary key (COMMENT_ID)
);

/*==============================================================*/
/* Table: MTYPE                                                 */
/*==============================================================*/
create table MTYPE
(
   TID                  int(10) not null auto_increment,
   TNAME                varchar(50),
   TDESC                varchar(100),
   primary key (TID)
);

/*==============================================================*/
/* Table: SONG                                                  */
/*==============================================================*/
create table SONG
(
   SID                  int(10) not null auto_increment,
   TID                  int(10),
   SRID                 int(10),
   AID                  int(10),
   SNAME                varchar(50),
   PIC                  varchar(100),
   MP3                  varchar(100),
   LRC                  text,
   IS_HOT               int(2),
   IS_NEW               int(2),
   PTIMES               int(100),
   AUDIT_STATUS         int(2),
   SHOW_STATUS          int(2),
   primary key (SID)
);

/*==============================================================*/
/* Table: SONGER                                                */
/*==============================================================*/
create table SONGER
(
   SRID                 int(10) not null auto_increment,
   TID                  int(10),
   SRNAME               varchar(20),
   INTRO                text,
   AREA                 varchar(20),
   PIC                  varchar(100),
   IS_HOT               int(2),
   primary key (SRID)
);

/*==============================================================*/
/* Table: TX_USER                                               */
/*==============================================================*/
create table TX_USER
(
   USER_ID              int(10) not null auto_increment,
   USERNAME             varchar(20),
   PASSWORD             varchar(20),
   QQ                   varchar(20),
   EMAIL                varchar(20),
   NICK                 varchar(20),
   TEL                  varchar(20),
   REG_TIME             date,
   primary key (USER_ID)
);

二、创建工程

1.项目结构

2.加入pom文件依赖

hamparent.xml

XML 复制代码 
<groupId>com.qcby</groupId>
    <artifactId>hamparent</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>hamconsole</module>
        <module>hamcore</module>
        <module>hamfile</module>
        <module>hamportal</module>
    </modules>

    <dependencyManagement>
        <dependencies>
            <!-- spring -->
            <dependency>
                <groupId>org.aspectj</groupId>
                <artifactId>aspectjweaver</artifactId>
                <version>${aspectj.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-aop</artifactId>
                <version>${spring.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>${spring.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-web</artifactId>
                <version>${spring.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>${spring.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-test</artifactId>
                <version>${spring.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-tx</artifactId>
                <version>${spring.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>${spring.version}</version>
            </dependency>

            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
            </dependency>

            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
            </dependency>

            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
                <version>${servlet.version}</version>
                <scope>provided</scope>
            </dependency>

            <dependency>
                <groupId>javax.servlet.jsp</groupId>
                <artifactId>jsp-api</artifactId>
                <version>${jsp.version}</version>
                <scope>provided</scope>
            </dependency>

            <dependency>
                <groupId>jstl</groupId>
                <artifactId>jstl</artifactId>
                <version>${jstl.version}</version>
            </dependency>

            <!-- log start -->
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>${log4j.version}</version>
            </dependency>

            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-api</artifactId>
                <version>${slf4j.version}</version>
            </dependency>

            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
                <version>${slf4j.version}</version>
            </dependency>
            <!-- log end -->
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>${mybatis.version}</version>
            </dependency>

            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>${mybatis-spring.version}</version>
            </dependency>

            <!--连接池-->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>${druid.version}</version>
            </dependency>


            <!-- fastjson -->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>${fastjson.version}</version>
            </dependency>
            <!--文件上传处理-->
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>${commons-io.version}</version>
            </dependency>
            <dependency>
                <groupId>commons-fileupload</groupId>
                <artifactId>commons-fileupload</artifactId>
                <version>${commons-fileupload.version}</version>
            </dependency>

            <dependency>
                <groupId>commons-codec</groupId>
                <artifactId>commons-codec</artifactId>
                <version>${commons-codec.version}</version>
            </dependency>
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jstl</artifactId>
                <version>${jstl.version}</version>
            </dependency>

            <dependency>
                <groupId>com.sun.jersey</groupId>
                <artifactId>jersey-client</artifactId>
                <version>${jersey.version}</version>
            </dependency>

            <dependency>
                <groupId>commons-lang</groupId>
                <artifactId>commons-lang</artifactId>
                <version>${commons-lang.version}</version>
            </dependency>
        </dependencies>

    </dependencyManagement>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <spring.version>5.0.2.RELEASE</spring.version>
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
        <mysql.version>5.1.6</mysql.version>
        <mybatis.version>3.4.5</mybatis.version>
        <aspectj.version>1.6.8</aspectj.version>
        <junit.version>4.12</junit.version>
        <servlet.version>2.5</servlet.version>
        <jsp.version>2.0</jsp.version>
        <jstl.version>1.2</jstl.version>
        <druid.version>1.1.10</druid.version>
        <fastjson.version>1.2.47</fastjson.version>
        <commons-io.version>2.0.1</commons-io.version>
        <commons-lang.version>2.6</commons-lang.version>
        <commons-fileupload.version>1.3.1</commons-fileupload.version>
        <commons-codec.version>1.10</commons-codec.version>
        <mybatis-spring.version>1.3.0</mybatis-spring.version>
        <jersey.version>1.2</jersey.version>
    </properties>

hamcore.xml

XML 复制代码 
    <parent>
        <artifactId>hamparent</artifactId>
        <groupId>com.qcby</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>hamcore</artifactId>

    <dependencies>
        <!-- spring -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.33</version>
        </dependency>
        <!-- log start -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
        </dependency>
        <!-- log end -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
        </dependency>

        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
        </dependency>

        <!--连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
        </dependency>


        <!-- fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
        </dependency>
        <!--文件上传处理-->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
        </dependency>

        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
        </dependency>

        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.6</version>
        </dependency>
    </dependencies>

3.搭建mybatis和spring的架构

3.1建包
3.2逆向工程
3.2.1在core工程中加入配置文件generatorConfig.xml
XML 复制代码 
<?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="mybatisGenerator" >
        <commentGenerator>
            <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
        <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/ham?serverTimezone=Asia/Shanghai&amp;useUnicode=true&amp;characterEncoding=utf-8&amp;allowMultiQueries=true" userId="root"
                        password="Xuhaoyu666!">
        </jdbcConnection>

        <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和
            NUMERIC 类型解析为java.math.BigDecimal -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- targetProject:生成PO类的位置 -->
        <javaModelGenerator targetPackage="com.qcby.model"
                            targetProject=".\hamcore\src\main\java">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
            <!-- 从数据库返回的值被清理前后的空格 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- targetProject:mapper映射文件生成的位置 -->
        <sqlMapGenerator targetPackage="mapper"
                         targetProject=".\hamcore\src\main\resources">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        <!-- targetPackage：mapper接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER"
                             targetPackage="com.qcby.dao"
                             targetProject=".\hamcore\src\main\java">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        <!-- 指定数据库表 -->
        <table tableName="songer" enableCountByExample="false"
               enableUpdateByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false" selectByExampleQueryId="false"/>


        <!-- 有些表的字段需要指定java类型
         <table schema="" tableName="">
            <columnOverride column="" javaType="" />
        </table> -->
    </context>
</generatorConfiguration>
3.2.2在类中创建逆向工程的执行类
java 复制代码 
package com.qcby.util;

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

public class Generator {
    public void generator() throws Exception {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        File configFile = new File("hamcore/src/main/resources/generatorConfig.xml");
        ConfigurationParser parser = new ConfigurationParser(warnings);
        Configuration config = parser.parseConfiguration(configFile);
        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
        myBatisGenerator.generate(null);
    }

    public static void main(String[] args) throws Exception {
        try {
            Generator generatorSqlmap = new Generator();
            generatorSqlmap.generator();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

执行逆向工程后，就会我们的项目中就会生成下面的代码

逆向工程做完后我们已经有了数据层和model

3.3.创建Service层

在service包中创建接口

java 复制代码 
public interface SongerService {


    public void addSonger(Songer songer);

    public Songer getSongerById(int songId);

    public void updateSonger(Songer songer);

    public void delSongerById(int songId);

}

在service.impl中创建接口的实现类

java 复制代码 
@Service
public class SongerServiceImpl implements SongerService {

    @Autowired
    private SongerMapper songerMapper;

    @Override
    public void addSonger(Songer songer) {
        songerMapper.insert(songer);
    }

    @Override
    public Songer getSongerById(int songId) {
        return songerMapper.selectByPrimaryKey(songId);
    }

    @Override
    public void updateSonger(Songer songer) {
        songerMapper.updateByPrimaryKeySelective(songer);
    }

    @Override
    public void delSongerById(int songId) {
        songerMapper.deleteByPrimaryKey(songId);
    }
}
3.4创建spring和mybatis的配置文件

spring-core.xml

XML 复制代码 
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd">

    <context:component-scan base-package="com.qcby"></context:component-scan>

    <context:property-placeholder location="classpath:db.properties"/>
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${driverClass}"></property>
        <property name="url" value="${url}"></property>
        <property name="username" value="${uname}"></property>
        <property name="password" value="${pword}"></property>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
    </bean>

    <bean id="mapperScan" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
        <property name="basePackage" value="com.qcby.dao"></property>
    </bean>

    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="del*" propagation="REQUIRED"/>
            <tx:method name="modify*" propagation="REQUIRED"/>
            <tx:method name="remove*" propagation="REQUIRED"/>
            <tx:method name="get" read-only="true"></tx:method>
            <tx:method name="select" read-only="true"></tx:method>
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.qcby.service..*.*(..))"></aop:advisor>
    </aop:config>
</beans>
3.5在测试资源包内测试整合
java 复制代码 
package com.qcby.demo1;

import com.qcby.model.Songer;
import com.qcby.service.SongerService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:spring-core.xml"})
public class SongerTest {
    @Autowired
    private SongerService songerService;

    @Test
    public void run(){
        Songer songer = songerService.selectByPrimaryKey(2);
        System.out.println(songer);
    }
}
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