关于mybatis-plus可以看文档：https://mp.baomidou.com
集成过程中有一些注意的问题，特在这里总结一下：
一、依赖
1、在总pom中加入依赖
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<java.version>1.8</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.encoding>UTF-8</maven.compiler.encoding>
<mybatisplus.version>3.0.7.1</mybatisplus.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>${mybatisplus.version}</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus</artifactId>
<version>${mybatisplus.version}</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
<version>${mybatisplus.version}</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.5</version>
</dependency>
</dependencies>
</dependencyManagement>
2、在业务模块加入依赖
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<scope>provided</scope>
</dependency>
<!--spring boot tomcat（默认可以不用配置，但当需要把当前web应用布置到外部servlet容器时就需要配置，并将scope配置为provided）-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<!--连接池-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</dependency>
</dependencies>
二、在application.yml里加入mybatis-plus的配置
mybatis-plus:
mapper-locations: classpath:mybatisplus/.xml
typeAliasesPackage: 你的包名.*.entity
注意:这两个路径为你自动生成代码时候设置的路径
第一个是mapper的xml所在的路径
第二个是你生成的实体所在的路径
三、配置mybatis的数据源
1、@MapperScan("你的包名.*.mapper");
配置MYSQL数据源的时候在MapperScan里配置扫描的mapper所在的包名
2、配置SessionFactory
这个地方出问题我一直找了好久，我原来用的mybatis的SessionFactoryBean，发现一直执行错误，报错如下
Invalid bound statement (not found)
最后翻代码后发现，这个地方需要使用mybatis-plus的SessionFactoryBean，官方文档并没有写这个
这个SessionFactoryBean的类名是：MybatisSqlSessionFactoryBean
四、自动生成代码
public class MysqlGenerator {
/**
* <p>
* 读取控制台内容
* </p>
*/
public static String scanner(String tip) {
Scanner scanner = new Scanner(System.in);
StringBuilder help = new StringBuilder();
help.append("请输入" + tip + "：");
System.out.println(help.toString());
if (scanner.hasNext()) {
String ipt = scanner.next();
if (StringUtils.isNotEmpty(ipt)) {
return ipt;
}
}
throw new MybatisPlusException("请输入正确的" + tip + "！");
}
/**
* RUN THIS
*/
public static void main(String[] args) {
// 代码生成器
AutoGenerator mpg = new AutoGenerator();
// 全局配置
GlobalConfig gc = new GlobalConfig();
String projectPath = System.getProperty("user.dir");
gc.setOutputDir(projectPath + "/config-core/src/main/java");
gc.setAuthor("liangfawen");
gc.setOpen(false);
mpg.setGlobalConfig(gc);
// 数据源配置
DataSourceConfig dsc = new DataSourceConfig();
dsc.setUrl("jdbc:mysql://...");//这里是你连接MYSQL的URL
// dsc.setSchemaName("public");
dsc.setDriverName("com.mysql.cj.jdbc.Driver");
dsc.setUsername("root");
dsc.setPassword("XXXXX");//你数据库的密码
mpg.setDataSource(dsc);
// 包配置
PackageConfig pc = new PackageConfig();
pc.setModuleName(scanner("模块名"));
pc.setParent("com.jd.jr.jwd.rule.config.core.autodao");
mpg.setPackageInfo(pc);
// 自定义配置
InjectionConfig cfg = new InjectionConfig() {
@Override
public void initMap() {
// to do nothing
}
};
List<FileOutConfig> focList = new ArrayList<>();
focList.add(new FileOutConfig("/templates/mapper.xml.ftl") {
@Override
public String outputFile(TableInfo tableInfo) {
// 这里定义了mapper的xml生成的路径，生成的名字你自己也可以修改
return projectPath + "/config-core/src/main/resources/mybatisplus/"//
+ tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
}
});
cfg.setFileOutConfigList(focList);
mpg.setCfg(cfg);
mpg.setTemplate(new TemplateConfig().setXml(null));
// 策略配置
StrategyConfig strategy = new StrategyConfig();
strategy.setNaming(NamingStrategy.underline_to_camel);
strategy.setColumnNaming(NamingStrategy.underline_to_camel);
strategy.setEntityLombokModel(true);
strategy.setInclude(scanner("表名"));
strategy.setSuperEntityColumns("id");
strategy.setControllerMappingHyphenStyle(true);
strategy.setTablePrefix(pc.getModuleName() + "_");
mpg.setStrategy(strategy);
// 选择 freemarker 引擎需要指定如下加，注意 pom 依赖必须有！
mpg.setTemplateEngine(new FreemarkerTemplateEngine());
mpg.execute();
}
执行main方法就能自动生成代码
我本来不想在这里生成controller,想生成在其他模块，但我看了配置的代码，并没有支持这个配置
以上就完成了mybatis-plus的配置，亲测可以使用。
