1.pom.xml
<?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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.16</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
<version>3.1.0</version>
</dependency>
<!-- 模板引擎 -->
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-engine-core</artifactId>
<version>2.1</version>
</dependency>
<!--用於編譯jsp-->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/webapp</directory>
</resource>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>11</source>
<target>11</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
2.根據數據庫表自動生成代碼
執行CodeGenerator類中main方法後,會在E://MP_CODE目錄下生成對應的文件,將文件拷貝到項目目錄中即可。
package com.example.mp;
import com.baomidou.mybatisplus.annotation.FieldFill;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.extension.incrementer.OracleKeyGenerator;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.po.TableFill;
import com.baomidou.mybatisplus.generator.config.rules.DateType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import java.util.ArrayList;
import java.util.List;
public class CodeGenerator {
//指定文件保存地址
private static final String out_dir = "E://MP_CODE";
//作者
private static final String author = "renhaoxiang";
//模塊名
private static final String module_name = "sys";
//數據庫 表名
private static final String table_name = "test";
//數據庫 ID 主鍵策略
private static final IdType id_type = IdType.AUTO;
//表對應的基類名,注意首字母大寫
private static final String entity_name = "Test";
public static void main(String[] args) {
// 代碼生成器
AutoGenerator mpg = new AutoGenerator();
// 全局配置
GlobalConfig gc = new GlobalConfig();
//獲取項目主路徑
//String projectPath = System.getProperty("user.dir") + "/src/main/java";
//java文件路徑 projectPath
gc.setOutputDir(out_dir);
//是否覆蓋文件
gc.setFileOverride(true);
//是否開啓 activeRecord 模式,實體類只需繼承 Model 類,即可直接調用相關方法,實現基本 CRUD 操作
//User user = new User(); user.insert();
//gc.setActiveRecord(true);
//文件創建人
gc.setAuthor(author);
//是否打開輸出目錄GlobalConfiguration
gc.setOpen(false);
//實體類名
gc.setEntityName(entity_name);
//Controller類文件 %s會自動填充表實體屬性
gc.setControllerName(entity_name+"Controller");
//Service接口類文件名
gc.setServiceName(entity_name+"Service");
//Service接口實現類文件名
gc.setServiceImplName(entity_name+"ServiceImpl");
//Mapper類文件名
gc.setMapperName(entity_name+"Mapper");
//XML SQL配置文件名
gc.setXmlName(entity_name+"Mapper");
//XML ResultMap
gc.setBaseResultMap(true);
//XML columList
gc.setBaseColumnList(true);
//XML 二級緩存
gc.setEnableCache(false);
//自定義ID類型
gc.setIdType(id_type);
mpg.setGlobalConfig(gc);
// 數據源配置
DataSourceConfig dsc = new DataSourceConfig();
dsc.setUrl("jdbc:mysql://localhost:3306/test?useSSL=false&useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true");
// dsc.setSchemaName("public");
dsc.setDriverName("com.mysql.jdbc.Driver");
dsc.setUsername("root");
dsc.setPassword("root");
mpg.setDataSource(dsc);
// 包配置
PackageConfig pc = new PackageConfig();
//包名 默認com.baomidou
pc.setParent("com.example.demo.core");
//自定義模塊名 默認null
pc.setModuleName(module_name);
//自定義實體類包名
pc.setEntity("entity");
//自定義控制器包名,默認 controller
pc.setController("controller");
//自定義Service接口類包名
pc.setService("service");
//自定義Service接口實現類包名
pc.setServiceImpl("service.impl");
//自定義Mapper類包名
pc.setMapper("mapper");
//自定義xml sql配置文件類包名
pc.setXml("mapper.xml");
mpg.setPackageInfo(pc);
// 策略配置
StrategyConfig strategy = new StrategyConfig();
//全局大寫命名 默認false
//strategy.setCapitalMode(true);
//數據庫表名映射到實體的命名策略
strategy.setNaming(NamingStrategy.underline_to_camel);
//數據庫表字段映射到實體的命名策略, 未指定按照 naming 執行
strategy.setColumnNaming(NamingStrategy.underline_to_camel);
//【實體】是否爲lombok模型(默認 false),需要lombok包支持
strategy.setEntityLombokModel(true);
//【實體】是否爲構建者模型(默認 false)
//public User setName(String name) {this.name = name; return this;}
strategy.setEntityBuilderModel(true);
//【實體】是否生成字段常量(默認 false)
//public static final String ID = "test_id";
//strategy.setEntityColumnConstant(true);
//生成 @RestController 控制器
strategy.setRestControllerStyle(false);
//需要生成的表,多個使用英文逗號分割,允許正則表達式
strategy.setInclude(table_name);
//排除生成的表
//strategy.setExclude("");
//駝峯轉連字符
strategy.setControllerMappingHyphenStyle(true);
//自定義實體,公共字段
//strategy.setSuperEntityColumns("id");
//表前綴
//strategy.setTablePrefix(pc.getModuleName() + "_");
//Boolean類型字段是否移除is前綴處理
strategy.setEntityBooleanColumnRemoveIsPrefix(true);
//自定義需要填充的字段
//如 每張表都有一個創建時間、修改時間
//而且這基本上就是通用的了,新增時,創建時間和修改時間同時修改
//修改時,修改時間會修改,
//雖然像Mysql數據庫有自動更新幾隻,但像ORACLE的數據庫就沒有了,
//使用公共字段填充功能,就可以實現,自動按場景更新了。
/*List<TableFill> tableFillList = new ArrayList<TableFill>(){
{
add(new TableFill("create_time", FieldFill.INSERT));
add(new TableFill("modified_time", FieldFill.INSERT_UPDATE));
}
};
strategy.setTableFillList(tableFillList);*/
//自定義實體類父類
//strategy.setSuperEntityClass("com.baomidou.demo.common.base.BsBaseEntity");
//自定義 controller 父類
//strategy.setSuperControllerClass("com.baomidou.demo.TestController");
//自定義 service 父類
//strategy.setSuperServiceClass("com.baomidou.demo.common.base.BsBaseService");
//自定義 service 實現類父類
//strategy.setSuperServiceImplClass("com.baomidou.demo.common.base.BsBaseServiceImpl");
//自定義 mapper 父類
//strategy.setSuperMapperClass("com.baomidou.demo.common.base.BsBaseMapper");
mpg.setStrategy(strategy);
// 執行生成
mpg.execute();
}
}
3.注意事項
(1)將原生SqlSessionFactoryBean更換爲Mybatis-plus的MybatisSqlSessionFactoryBean
<bean id="sqlSessionFactory" name="sqlSessionFactoryName"
class="com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="typeAliasesPackage" value="com.example.demo.core.*" />
<property name="configLocation" value="classpath:spring/mybatis-config.xml"/>
<property name="mapperLocations" value="classpath*:com/example/demo/core/**/mapper/xml/*.xml" />
</bean>
(2)代碼中使用了lombok,如果要調用實體類的getter、setter方法,需要手動添加,或者安裝lombok的插件。