原文链接:https://www.cnblogs.com/miketwais/articles/mybatisgenerate_oracle.html
SpringBoot+Mybatis+mybatis generate+oracle配置方法记录，以便不时之需。
1.创建springboot项目，参见以前的文章。
File -> New -> Project -> Spring Initalizr
Next ->填写Project Metadata，其中Type选择Maven Project
Next ->按需选择依赖，如Web-Web，SQL-MyBatis
Next -> Finish
2.配置oracle和mybatis
看看配置好的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>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.6.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-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>12.1.0.1.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!-- mybatis generator 自动生成代码插件 -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<dependencies>
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>12.1.0.1.0</version>
</dependency>
</dependencies>
<configuration>
<overwrite>true</overwrite>
</configuration>
</plugin>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<configurationFile>${basedir}/src/main/resources/generatorConfig.xml</configurationFile>
<overwrite>true</overwrite>
<verbose>true</verbose>
</configuration>
</plugin>
</plugins>
</build>
</project>
看看application.properties
spring.datasource.driverClassName=oracle.jdbc.driver.OracleDriver spring.datasource.url=jdbc:oracle:thin:@//101.210.212.244:1521/XE spring.datasource.username=UNI_CARD spring.datasource.password=UNI_CARD #spring.datasource.driver-class-name=com.mysql.jdbc.Driver #mybatis.config-location=classpath:mybatis-config.xml mybatis.typeAliasesPackage=com.example.demo.model mybatis.mapper-locations=classpath:mybatis.mapping/*.xml
看看generatorConfig.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="oraclegenerator" targetRuntime="MyBatis3Simple">
<commentGenerator>
<property name="suppressDate" value="true"/>
<!-- 是否去除自动生成的注释 true：是 ： false:否 -->
<property name="suppressAllComments" value="true"/>
</commentGenerator>
<jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver"
connectionURL="jdbc:oracle:thin:@101.210.212.244:1521:XE"
userId="UNI_CARD"
password="UNI_CARD"/>
<javaModelGenerator targetPackage="com.example.demo.model" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<!--生成映射文件存放位置-->
<sqlMapGenerator targetPackage="mybatis.mapping" targetProject="src/main/resources">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>
<javaClientGenerator targetPackage="com.example.demo.mapper" type="XMLMAPPER" targetProject="src/main/java">
<!-- 在targetPackage的基础上，根据数据库的schema再生成一层package，最终生成的类放在这个package下，默认为false -->
<property name="enableSubPackages" value="true"/>
</javaClientGenerator>
<table tableName="ACCESS_TYPE" domainObjectName="ACCESS_TYPE"/>
</context>
</generatorConfiguration>
关键点就是上面的几个配置文件，然后需要建立相应的文件夹，必须对应好才不会出错！！！
关于在maven中引用oracle，因为orcale收费不允许maven引用，需要下载到本地仓库使用，具体方法参见：https://www.cnblogs.com/cnsevennight/p/6586801.html
到此就配置完成。
3.使用mybatis-generate生成相应的mapper.xml,mapper文件及实体类。
双击即可。
注意：
常见问题应答：
报错：Table configuration with catalog null错误
解决方法：需要去掉generatorConfig.xml中<table>标签中的schema属性,MySQL则不需要去掉。