SpringBoot基於IDEA+MySQL 整合MyBatis Generator（避免踩坑！！！）

SpringBoot基於IDEA+MySQL 整合MyBatis Generator

這裏是正文

1. pom.xml中添加plugin標籤

<plugin>
     <groupId>org.mybatis.generator</groupId>
     <artifactId>mybatis-generator-maven-plugin</artifactId>
     <version>1.3.2</version>
     <configuration>
         <configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
         <verbose>true</verbose>
         <overwrite>true</overwrite>
      </configuration>
      <dependencies>
          <dependency>
              <groupId>mysql</groupId>
              <artifactId>mysql-connector-java</artifactId>
              <version>8.0.18</version>
          </dependency>
      </dependencies>
</plugin>

注意：插件中添加數據庫驅動，配置generatorConfig.xml的文件位置

分割線

2. generatorConfig.xml中注意jdbcConnection標籤的配置

<jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
    connectionURL="jdbc:mysql://localhost:3306/answerserverTimezone=UTC&amp;characterEncoding=utf-8"
       userId="root"
       password="admin">
     <property name="nullCatalogMeansCurrent" value="true"/>
</jdbcConnection>

注意：connectionURL中的&請用&代替，mysql不支持schema,爲了避免重名錶，請添加nullCatalogMeansCurrent屬性，添加nullCatalogMeansCurrent屬性，添加nullCatalogMeansCurrent屬性，重要的事情說三遍！！！。

以下是項目的原pom文件與generatorConfig.xml文件

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 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>2.2.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.answer.question</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>answerquestion</name>
    <description>answerquestion</description>

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

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>com.squareup.okhttp3</groupId>
            <artifactId>okhttp</artifactId>
            <version>4.2.2</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.62</version>
        </dependency>
        <!--添加MySql依賴-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.1</version>
        </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.18.10</version>
                <scope>provided</scope>
            </dependency>
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>5.1.2</version>
        </dependency>
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-autoconfigure</artifactId>
            <version>1.2.5</version>
        </dependency>

        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.5</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.2</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.2</version>
                <configuration>
                    <configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
                    <verbose>true</verbose>
                    <overwrite>true</overwrite>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <!--<scope>runtime</scope>-->
                        <version>8.0.18</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>
</project>

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="MysqlTable" targetRuntime="MyBatis3">
    <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
        connectionURL="jdbc:mysql://localhost:3306/answer?serverTimezone=UTC&amp;characterEncoding=utf-8"
        userId="root"
        password="admin">
      <property name="nullCatalogMeansCurrent" value="true"/>
    </jdbcConnection>

    <javaTypeResolver >
      <property name="forceBigDecimals" value="false" />
    </javaTypeResolver>

    <javaModelGenerator targetPackage="com.answer.question.model" targetProject="src\main\java">
      <property name="enableSubPackages" value="true" />
      <property name="trimStrings" value="true" />
    </javaModelGenerator>

    <sqlMapGenerator targetPackage="mapper"  targetProject="src\main\resources">
      <property name="enableSubPackages" value="true" />
    </sqlMapGenerator>

    <javaClientGenerator type="XMLMAPPER" targetPackage="com.answer.question.model"  targetProject="src\main\java">
      <property name="enableSubPackages" value="true" />
    </javaClientGenerator>

    <table schema="answer" tableName="user" domainObjectName="User" >
<!--      <generatedKey column="ID" sqlStatement="DB2" identity="true" />-->
<!--      <columnOverride column="DATE_FIELD" property="startDate" />-->
<!--      <ignoreColumn column="FRED" />-->
<!--      <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" />-->
    </table>

  </context>
</generatorConfiguration>