New springboot + mybatis plus project

New springboot + mybatis plus project

First, use idea to create a new SpringBoot

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In this way, a spring boot project is created. Here is the new project structure

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Add mybatis plus and other dependencies to the pom.xml file

<?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 https://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>2.2.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <!--Code generator dependency-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--Template engine dependency-->
        <dependency>
            <groupId>org.freemarker</groupId>
            <artifactId>freemarker</artifactId>
            <version>2.3.29</version>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.3.0</version>
        </dependency>
        <!-- MySQL Driving package -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <!-- MyBatisPlus Driving package -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.1.1</version>
        </dependency>
        <!--  swagger -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.8.0</version>
        </dependency>
        <!--  swagger-ui -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.8.0</version>
        </dependency>

        <!-- Simplified entity class, optional -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <!-- druid Database connection pool -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.9</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

Add project configuration in the application.properties file

#Configure port number
server.port = 8888
#Load driver
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
#Database connection path
spring.datasource.url=jdbc:mysql://localhost:3306/mp?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
#Database user name
spring.datasource.username=root
#Database password
spring.datasource.password=123456
#Data source type (Alibaba)
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
#Configuration log (showing SQL statements executed by mybatis)
logging.level.com.example.demo.mapper=debug

Create a new controller, entity, mapper and service layer

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Load mybatis in the startup class

@SpringBootApplication
// Load mybatis
@MapperScan("com.example.demo.mapper")
public class DemoApplication {
    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }
}

Add code generation class

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/**
 * Code generation class
 */
public class GenMain {
    /**
     * <p>
     * Read console content
     * </p>
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("Please input" + tip + ": ");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotEmpty(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("Please enter the correct" + tip + "!");
    }

    public static void main(String[] args) {
        // Code generator 
        AutoGenerator mpg = new AutoGenerator();

        // Global configuration
        GlobalConfig gc = new GlobalConfig();
        String projectPath = System.getProperty("user.dir");
        gc.setOutputDir(projectPath + "/src/main/java");
        gc.setAuthor("gzh");
        gc.setOpen(true);
        // gc.setSwagger2(true); entity attribute Swagger2 annotation
        mpg.setGlobalConfig(gc);

        // Data source configuration
        DataSourceConfig dsc = new DataSourceConfig();
        // Oracle path
//        dsc.setUrl("jdbc:oracle:thin:@localhost:1521:orcl");
        dsc.setUrl("jdbc:mysql://localhost:3306/mp?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC");
        // dsc.setSchemaName("public");
        dsc.setDriverName("com.mysql.cj.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("123456");
        mpg.setDataSource(dsc);

        // Packet configuration
        PackageConfig pc = new PackageConfig();
        pc.setModuleName(scanner("Module name"));
        pc.setParent("com.example");
        mpg.setPackageInfo(pc);

        // Custom configuration
        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };

        // If the template engine is freemarker
        String templatePath = "/templates/mapper.xml.ftl";
        // If the template engine is velocity
        // String templatePath = "/templates/mapper.xml.vm";

        // Custom output configuration
        List<FileOutConfig> focList = new ArrayList<>();
        // Custom configuration will be output first
        focList.add(new FileOutConfig(templatePath) {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // Customize the output file name. If you set the prefix and suffix for Entity, please note that the name of xml will change accordingly!!
                return projectPath + "/src/main/resources/mapper/" + pc.getModuleName()
                        + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }
        });
        /*
        cfg.setFileCreate(new IFileCreate() {
            @Override
            public boolean isCreate(ConfigBuilder configBuilder, FileType fileType, String filePath) {
                // Determine whether a custom folder needs to be created
                checkDir("Directory created by calling the default method ');
                return false;
            }
        });
        */
        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);

        // Configuration template
        TemplateConfig templateConfig = new TemplateConfig();

        // Configure custom output templates
        //Specify the path of the custom template. Be careful not to bring. ftl/.vm. It will be automatically recognized according to the template engine used
        // templateConfig.setEntity("templates/entity2.java");
        // templateConfig.setService();
        // templateConfig.setController();

        templateConfig.setXml(null);
        mpg.setTemplate(templateConfig);

        // Policy configuration
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
       // strategy.setSuperEntityClass("com.baomidou.ant.common.BaseEntity");
        strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        // Public parent class
       // strategy.setSuperControllerClass("com.baomidou.ant.common.BaseController");
        // Public fields written in the parent class
        strategy.setSuperEntityColumns("id");
        strategy.setInclude(scanner("Table name, multiple comma separated").toUpperCase().split(","));
        strategy.setControllerMappingHyphenStyle(true);
        strategy.setTablePrefix(pc.getModuleName() + "_");
        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }

}

At this point, the project of springboot + mybatis plus is completed.

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Tags: Spring Mybatis MySQL xml

Posted on Wed, 15 Jan 2020 00:05:45 -0500 by squallm1