springboot 数据库逆向工程

maven所需要依赖

<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.4.6</version>
    <scope>compile</scope>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>6.0.6</version>
</dependency>
<dependency>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-core</artifactId>
    <version>1.3.6</version>
</dependency>

<build>
    <plugins>
        <!-- mybatis-generator自动生成代码插件 -->
        <plugin>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-maven-plugin</artifactId>
            <version>1.3.6</version>
        </plugin>
    </plugins>
<build>

generationConfig.xml

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
    <context id="mybatisGenerator" targetRuntime="MyBatis3" defaultModelType="flat">
        <commentGenerator>
            <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
            <property name="suppressAllComments" value="false" />
        </commentGenerator>
        <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
        <jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver"
                        connectionURL="jdbc:oracle:thin:@ip:1521:gbksl"
                        userId="用户名"
                        password="密码">
        </jdbcConnection>

        <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和
            NUMERIC 类型解析为java.math.BigDecimal -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- targetProject:生成PO类的位置 -->
        <javaModelGenerator targetPackage="com.example.pojo"
                            targetProject="src/main/java/">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
            <!-- 从数据库返回的值被清理前后的空格 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- targetProject:mapper映射文件生成的位置 -->
        <sqlMapGenerator targetPackage="com.example.mapper"
                         targetProject="src/main/java/">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        <!-- targetPackage：mapper接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER"
                             targetPackage="com.example.mapper"
                             targetProject="src/main/java/">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        <!-- 指定数据库表 -->
        <table schema="treatReserverManage" tableName="PATIENT"></table>

        <!-- 有些表的字段需要指定java类型
         <table schema="" tableName="">
            <columnOverride column="" javaType="" />
        </table> -->
    </context>
</generatorConfiguration>

创建generationConfigRun .java文件

package com.example;

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;


import java.io.File;
import java.util.ArrayList;
import java.util.List;

public class generationConfigRun {
    public static void main(String[] args) throws  Exception{
          try{
              generationConfigRun generationConfigRun = new generationConfigRun();
              generationConfigRun.fenerator();
          }catch (Exception e){
               e.printStackTrace();
          }

    }


    public void fenerator() throws  Exception{
        List<String> warn = new ArrayList<String>();
        boolean overariter = true;
        //指定逆向工程配置文件
        File configFile = new File("src/main/java/generationConfig.xml");//generationConfigRun
        ConfigurationParser parser = new ConfigurationParser(warn);
        Configuration config = parser.parseConfiguration(configFile);
        DefaultShellCallback callback = new DefaultShellCallback(overariter);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config,callback,warn);
        myBatisGenerator.generate(null);


    }
}

使用事例

import java.util.List;

@Service
public class TestServiceImpl implements TestService {

    @Autowired
    public PatientMapper patientMapper;

    @Override
    public List<Patient> getAll() {
        PatientExample patientExample = new PatientExample();
        patientExample.createCriteria().andNameIsNotNull();
        List<Patient> list =patientMapper.selectByExample(patientExample);
        System.out.println(list.size());
        return list;
    }
}