编程语言
首页 > 编程语言> > java模板代码生成器(还不是有手就行)

java模板代码生成器(还不是有手就行)

作者:互联网

简介
代码生成感觉非常合适我们这种勤奋的人,废话不多说,直接上代码(有手就行);

知识点:mybatis-plus框架,生成器根据mybatis-plus模板生成建议可以看官网:https://baomidou.com/
官网的生成器地址:https://baomidou.com/guide/generator.html

#pox.xml

<properties>
        <java.version>1.8</java.version>
        <mysql.version>8.0.22</mysql.version>
        <plus.version>3.4.2</plus.version>
        <swagger.version>2.9.2</swagger.version>
        <swaggerio.version>1.5.21</swaggerio.version>
        <commons.io.version>2.5</commons.io.version>
    </properties>
    <dependencies>

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.4.1</version>
        </dependency>

        <dependency>
            <groupId>org.freemarker</groupId>
            <artifactId>freemarker</artifactId>
            <version>2.3.31</version>
        </dependency>

        <dependency>
            <groupId>com.ibeetl</groupId>
            <artifactId>beetl</artifactId>
            <version>3.3.2.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity-engine-core</artifactId>
            <version>2.0</version>
        </dependency>

        <!--io常用工具类 -->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>${commons.io.version}</version>
        </dependency>


        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity-engine-core</artifactId>
            <version>2.3</version>
        </dependency>


        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

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

        <!-- Mybatis-plus 依赖 -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus</artifactId>
            <version>${plus.version}</version>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>${plus.version}</version>
        </dependency>
    </dependencies>

PublicConstants(常量)

/**
 * @ClassName PublicConstants
 * @Author zwy
 * @Data 15/4/2021 上午11:01
 */
public class PublicConstants {

    final public static String DRIVER_NAME = "com.mysql.cj.jdbc.Driver";

    final public static String URL = "jdbc:mysql://121.5.147.69:3306/material_system?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai";

    final public static String USER_NAME = "root";

    final public static String PASSWORD = "密码";

    final public static String CONTROLLER = "templates/controller.java.vm";

    final public static String SERVICE = "templates/service.java.vm";

    final public static String SERVICE_IMPL = "templates/serviceImpl.java.vm";

    final public static String MAPPER = "templates/mapper.java.vm";

    final public static String MAPPER_XML = "templates/mapper.xml.vm";

    final public static String ENTRY = "templates/entity.java.vm";
}

Test(测试)

 @Test
    public void test3(){
            // 全局配置   说明白点,就是一些文件生成路径和创建类上面的一些注释,例如作者等
            GlobalConfig globalConfig = new GlobalConfig();
            globalConfig.setActiveRecord(true)
                    .setFileOverride(true)
                    .setOpen(false)
                    //作者
                    .setAuthor("lanys")
                    //生成文件
                    .setOutputDir("D:/lanys")
                    //指定生成的主键的ID类型
                    .setIdType(IdType.AUTO)
                    //service层的名称
                    .setServiceName("%sService")
                    .setBaseResultMap(true)
                    .setBaseColumnList(true);

            //2.配置数据源  数据源,url,username,password
            DataSourceConfig dataSourceConfig = new DataSourceConfig();
            dataSourceConfig.setDriverName(PublicConstants.DRIVER_NAME);
            dataSourceConfig.setUrl(PublicConstants.URL);
            dataSourceConfig.setUsername(PublicConstants.USER_NAME);
            dataSourceConfig.setPassword(PublicConstants.PASSWORD);

            //3.包的策略配置  //packageConfig.setModuleName(mysql.getTableName());
            PackageConfig packageConfig = new PackageConfig();
            //配置包名
            packageConfig.setParent("sys_user");
            //实体包名
            packageConfig.setEntity("model");

            //4.模板    如果没有什么set的,就会使用默认的mybatis-plus默认模板
            TemplateConfig templateConfig = new TemplateConfig();
            templateConfig.setXml(null);
            //下边是是定义模板
//            templateConfig.setController(PublicConstants.CONTROLLER);
//            templateConfig.setXml(PublicConstants.MAPPER_XML);
//            templateConfig.setService(PublicConstants.SERVICE);
//            templateConfig.setServiceImpl(PublicConstants.SERVICE_IMPL);
//            templateConfig.setMapper(PublicConstants.MAPPER);
//            templateConfig.setEntity(PublicConstants.ENTRY);


            //5.配置策略模式
            StrategyConfig strategyConfig = new StrategyConfig();
            //驼峰命名
            strategyConfig.setCapitalMode(true)
                    //驼峰命名
                    .setNaming(NamingStrategy.underline_to_camel)
                    /**
                     * 指定数据库表,如果不指定,就会生成数据库中的全部表
                     */
                    .setInclude("sys_user");

            //最主要的生成器
            AutoGenerator autoGenerator = new AutoGenerator();
            autoGenerator.setGlobalConfig(globalConfig)
                    .setDataSource(dataSourceConfig)
                    .setStrategy(strategyConfig)
                    .setTemplate(templateConfig)
                    .setPackageInfo(packageConfig);
            //自定义生成
            //autoGenerator.setCfg(injectionConfig());

            autoGenerator.execute();
        }

解析:因为大部分的代码已经写好注解,可以自己去看,如果想自己用来测试需要注意的有:

1.常量文件中的对应的mysql配置:ip,端口,数据库名称,账号,密码
    final public static String URL = "jdbc:mysql://121.5.147.69:3306/material_system?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai";

    final public static String USER_NAME = "root";

    final public static String PASSWORD = "密码"




2.生成对应表,或生成全部表,下边已注释:
    //5.配置策略模式
    StrategyConfig strategyConfig = new StrategyConfig();
      //驼峰命名
      strategyConfig.setCapitalMode(true)
        //驼峰命名
         .setNaming(NamingStrategy.underline_to_camel)
          /**
            * 指定数据库表,如果不指定,就会生成数据库中的全部表
            */
            .setInclude("sys_user");

注意:这是模板生成,如果想要更进一步提升,可以自己写一个生成器,不用太原始,比如你想生成数据库的某个表,他是如何获取的等,到你真正的去探索就会发现很有意思!

例如:1.获取数据库中的某个表:

select table_name, table_comment, create_time, update_time from
information_schema.tableswhere table_name NOT LIKE 'qrtz_%'
and table_name NOT LIKE 'gen_%' and table_schema = (select database())
and table_name='sys_notice'

2.获取数据库中的所有表:

select table_name,table_comment,create_time,update_time from 
information_schema.tables where table_schema = (select database())

3.获取数据表中的字段:

select column_name,column_type from information_schema.columns
 where table_schema = (select database()) and table_name = 'sys_user'
	 	order by ordinal_position

声明:生成器简单入门,充当笔记,造轮子。

标签:代码生成,java,String,final,有手,static,table,public,PublicConstants
来源: https://blog.csdn.net/qq_44697754/article/details/115773733