由于菠菜杀大赔小BC网站源码出售dsluntan.com，QQ3393756370在数据库表反向生成过程中呢，需要通过jpa自动生成表，并且这个表必须有注释…废话不多说，直接亮配置…
1.首先这是我的pom.xml配置咯，说明下，只通过jpa生成，下面的lombok，mybatis-plus，generator这三个可以不要(也可以保留)，这三个是我测试工程用到的…真正需要的是：jpa,jdbc,mysql
<?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>
<groupId>com.orange.verify</groupId>
<artifactId>builder</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>builder</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.7</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.40</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.0.6</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.18</version>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
2.接下来是我的application.properties配置咯…数据库名称自行更改
spring.jpa.show-sql=true
spring.datasource.url=jdbc:mysql://localhost:3306/com_orange_verify_db?characterEncoding=UTF-8
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.jpa.properties.hibernate.hbm2ddl.auto=update
spring.jpa.properties.hibernate.show_sql=false
3.启动类扫描你要生成到数据的实体
@SpringBootApplication
@EntityScan(basePackages={"com.orange.verify.entity"})
public class BuilderApplication {
public static void main(String[] args) {
SpringApplication.run(BuilderApplication.class, args);
}
}
4.实体编辑
package com.orange.verify.entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import java.io.Serializable;
@Entity
@Table(name = "test")
@org.hibernate.annotations.Table(appliesTo = "test",comment="我会有表注释的哟...")
public class Test implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@Column(nullable = false,columnDefinition = "varchar(100) default '' comment '我是字段注释...'")
private String id;
@Column(nullable = false,columnDefinition = "int(2) comment '我是年龄注释...'")
private Integer age;
}
配置完这些，直接启动项目，就可以生成到数据库了…接下来讲讲在这个过程中学习到的东西了…
上面大家会发现了，有两个@Table，第一个@table是jpa自带的，第二个是hibernate的，必须结合使用才能生成表注释…
经过测试，如果把jpa的@table删除，生成，是无反应的（无效的）…
然后呢，在测试过程中呢，发现…直接注解到属性上面，然后不用写get set也能生成…