关于代码生成器，目的是为了生成项目基本骨架，基本都是对各种构造器(Builder)的构建。包括
-
DataSourceConfig.Builder数据库相关配置 -
GlobalConfig.Builder全局配置，包括作者、是否开启Swagger、生成文件目录等
-
PackageConfig.Builder包配置，选择父包名、模块名、实体\mapper\service等包名、mapper.xml输出路径。
-
TemplateConfig.Builder模板配置，自由选择禁用\启用哪些模块(默认全部启用)
-
InjectionConfig.Builder注入配置，比如说生成木块记录日志，可以启用这个。
-
StrategyConfig.Builder
策略配置，需要生成代码对应表名、entuty\mapper\service....策略配置 -
templateEngine
需要选择的模板引擎。
代码(静态)
首先创建一个SpringBoot的项目，为了方便后期拓展创建了一个父工程，统一管理公共包。
依赖
<properties>
<java.version>1.8</java.version>
<springboot.version>2.6.6</springboot.version>
<spring-boot-starter-web.version>2.6.6</spring-boot-starter-web.version>
<spring-boot-starter-test.version>2.6.6</spring-boot-starter-test.version>
<spring-boot-starter-freemarker.version>2.6.6</spring-boot-starter-freemarker.version>
<mysql.version>8.0.28</mysql.version>
<druid.version>1.2.8</druid.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<lombok.version>1.18.12</lombok.version>
<mybatis-plus.spring.boot.version>3.5.1</mybatis-plus.spring.boot.version>
<mybatis-plus-generator.version>3.5.2</mybatis-plus-generator.version>
<swagger.version>1.6.5</swagger.version>
<log4j.version>1.2.17</log4j.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<version>${springboot.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>${spring-boot-starter-web.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>${spring-boot-starter-test.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!-- 这里使用druid相关配置需要用到log4j -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>${druid.version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>${mybatis-plus.spring.boot.version}</version>
</dependency>
<!-- 代码生成依赖 -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
<version>${mybatis-plus-generator.version}</version>
</dependency>
<!-- 模板引擎 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
<version>${spring-boot-starter-freemarker.version}</version>
</dependency>
<!-- swagger api生成 -->
<dependency>
<groupId>io.swagger</groupId>
<artifactId>swagger-annotations</artifactId>
<version>${swagger.version}</version>
</dependency>
</dependencies>
配置
spring:
datasource:
name: myBlog
url: jdbc:mysql://localhost:3306/mybatis_plus?serverTimezone=UTC&useUnicode=true&characterEncoding=utf8&characterSetResults=utf8&useSSL=false
username: root
password: 123456
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
druid:
initialSize: 1
minIdle: 1
maxActive: 20
maxWait: 60000
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
validationQuery: select 'x'
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: false
maxOpenPreparedStatements: 20
#开启StatFilter
filter:
stat:
enabled: true
log-slow-sql: true
slow-sql-millis: 1000
#开启Slf4jFilter
slf4j:
enabled: true
data-source-log-enabled: false
connection-log-enabled: false
statement-log-enabled: false
result-set-log-enabled: false
#开启WallFilter
wall:
enabled: true
log-violation: true
throw-exception: false
config:
delete-where-none-check: true
#开启Web
web-stat-filter:
enabled: true
exclusions: /druid/*,*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico
url-pattern: /*
stat-view-servlet:
enabled: true
login-username: admin
login-password: 123456
#mybatisplus 日志配置
mybatis-plus:
configuration:
log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
map-underscore-to-camel-case: true
# cache-enabled: true
global-config:
db-config:
#logic-delete-field: flag # 全局逻辑删除的实体字段名(since 3.3.0,配置后可以忽略不配置步骤2)
logic-delete-value: 1 # 逻辑已删除值(默认为 1)
logic-not-delete-value: 0 # 逻辑未删除值(默认为 0)
mapper-locations: mapper/*.xml
type-aliases-package: com.roily.entity
type-handlers-package: com.roily.typeHandler
type-enums-package: com.roily.enums
具体看注释，有些用不到，比如druid的相关。
生成器
数据库相关枚举类，也可以写一个properties，用Property解析读取。
@Getter
public enum DbProperties {
URL("url", "jdbc:mysql://localhost:3306/mybatis_plus?useUnicode=true&charactEncoding=utf8&useSSL=true&serverTimezone=GMT%2B8"),
USER("user", "root"),
PASSWORD("pass", "123456");
private String property;
private String value;
DbProperties(String prop, String value) {
this.property = prop;
this.value = value;
}
}
数据库配置也可以写一个properties，放在静态代码块执行。
配置放在public，能读取到就行。
class CodeMake {
static {
InputStream in = ClassLoader.getSystemResourceAsStream("public/db.properties");
Properties prop = new Properties();
try {
prop.load(in);
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(prop);
}
}
代码生成器（静态）
class CodeMake {
public static void main(String[] args) {
DataSourceConfig.Builder dataSourceConfigBuilder =
new DataSourceConfig.Builder(
DbProperties.URL.getValue(),
DbProperties.USER.getValue(),
DbProperties.PASSWORD.getValue());
//配置 entity service xml impl 等文件输出路径
Map<OutputFile, String> outputFileStringMap =
Collections.singletonMap(OutputFile.xml, "mp-01\src\main\resources\mapper");
FastAutoGenerator
.create(dataSourceConfigBuilder)
//.create(DbProperties.URL.getValue(),DbProperties.PASSWORD.getValue(),DbProperties.USER.getValue())
.globalConfig(builder -> {
builder.author("roilyFish") // 设置作者
.dateType(DateType.TIME_PACK)//实体日期属性类型
.commentDate("yyyy-MM-dd")
.enableSwagger() // 开启 swagger 模式
.fileOverride() // 覆盖已生成文件
.disableOpenDir()//生成文件后、不要打开目录
.outputDir("mp-01\src\main\java"); // 指定输出目录
})
//包路径配置
.packageConfig(builder -> {
builder
.parent("com.roily.mp01") // 设置父包名 会影响package
.moduleName("backstage") // 设置父包模块名
.entity("entity")//实体类包名
.service("service")//service包名
.serviceImpl("service.impl")//impl包名
.mapper("mapper")//mapper接口包名
.controller("controller")//controller包名
.other("other")
//.xml("mp-01\src\main\resources\mapper")//mapper.xml 输出路径
//以上配置都基于父包路径
.pathInfo(outputFileStringMap); // 设置mapperXml生成路径
})
//模板配置
.templateConfig(builder -> {
builder
//.disable()//禁用所有模板
//.disable(TemplateType.ENTITY)//禁用模板 不生成Entity
.entity("/templates/entity.java")
//.service("/templates/service.java")
//.serviceImpl("/templates/serviceImpl.java")
//.mapper("/templates/mapper.java")
////.mapperXml("/templates/mapper.xml")
//.controller("/templates/controller.java")
.build();
})
.injectionConfig(builder -> {
builder
.beforeOutputFile((tableInfo, objectMap) -> {
System.out.println("tableInfo: " + tableInfo.getEntityName() + " objectMap: " + objectMap.size());
System.out.println(objectMap);
}
)
.customMap(Collections.singletonMap("test", "baomidou"))
//.customFile(Collections.singletonMap("test.txt", "/templates/entity.vm"))
.build();
})
.strategyConfig(builder -> {
builder.addInclude("user")// 设置需要生成的表名
.addTablePrefix("t_", "c_") // 设置过滤表前缀
.addTableSuffix("_info")// 设置过滤表后缀
//.addFieldPrefix("") // 设置过滤字段前缀
//.addFieldSuffix("") // 设置过滤字段后缀
.entityBuilder()
//.disableSerialVersionUID()//禁用生成serialVersionUID
.enableLombok()//允许启用lombok 没有get set 简洁
.enableRemoveIsPrefix()//允许去除bollean类型is前缀
.enableTableFieldAnnotation()// 开启生成实体时,生成字段注解 即 @TableField
.enableActiveRecord()//ActiveRecord 模式 crud更简洁
//.versionColumnName("version")//设置乐观锁字段
.versionPropertyName("version")//设置乐观锁属性
//.logicDeleteColumnName("deleted")//逻辑删除字段
.logicDeletePropertyName("deleted")//逻辑删除属性
.naming(NamingStrategy.underline_to_camel)//数据库名 驼峰命名
.columnNaming(NamingStrategy.underline_to_camel)//数据库字段 驼峰命名
//.addSuperEntityColumns("id")
//.addIgnoreColumns("deleted")//忽略字段
.addTableFills(new Column("create_time", FieldFill.INSERT), new Column("update_time", FieldFill.INSERT_UPDATE))
.idType(IdType.AUTO)//主键生成策略
.fileOverride()//覆盖已有文件
//.formatFileName("%s")
.build()
.controllerBuilder()
//.superClass(BaseController.class)//设置父类
.enableRestStyle()//@RestController
//.formatFileName("%sAction")//格式化文件名称
.build()
.serviceBuilder()
//.superServiceClass()//父类
.formatServiceFileName("%sService")
.formatServiceImplFileName("%sServiceImpl")
.build()
.mapperBuilder()
//.superClass()//父类
//.enableMapperAnnotation()//开启@Mapper 一般都会的配置扫描包
.enableBaseResultMap()
//.formatMapperFileName("%sMapper")
//.formatXmlFileName("%sMapper")
.build();
})
.templateEngine(new FreemarkerTemplateEngine()) // 使用Freemarker引擎模板，默认的是Velocity引擎模板
.execute();
}
}
其实静态的有了，动态交互的应该也可以出来。
