mybatis.generator配上最新的mysql 8.0.11的一些坑

淩亂°似流年 2022-05-17 02:16 136阅读 0赞

一、简介

> ![Image 1][]
> 
> mybatis-geneator是一款mybatis自动代码生成工具，可以通过配置，自动生成Entity、mapper和xml文件。

二、配置（配置的话  按着我这个来配置吧 ！  ）

在pom文件的<build>下的<plugins>添加以下配置

<plugin>
    	<groupId>org.mybatis.generator</groupId>
    	<artifactId>mybatis-generator-maven-plugin</artifactId>
    	<version>1.3.5</version>
    	<configuration>
    		    <configurationFile>
                        
    		    </configurationFile>
    		    <verbose>true</verbose>
    		    <overwrite>true</overwrite>
    	</configuration>
    	<dependencies>
    		<dependency>
    		    <groupId>mysql</groupId>
    		    <artifactId>mysql-connector-java</artifactId>
    		    <version>8.0.11</version>
    		</dependency>
    	</dependencies>
    </plugin>

再在resources下创建generatorConfig.xml

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配置的信息如下

<?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="default" targetRuntime="MyBatis3">
    
            
            <commentGenerator>
                <property name="suppressDate" value="true" />
                
                <property name="suppressAllComments" value="true" />
            </commentGenerator>
    
            
            <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
                            connectionURL="jdbc:mysql://localhost:3306/ajyl_medical_model?serverTimezone=UTC"
                            userId="root"
                            password="123456">
            </jdbcConnection>
    
            
            <javaTypeResolver>
                
                
                
                <property name="forceBigDecimals" value="false" />
            </javaTypeResolver>
    
            
            
            <javaModelGenerator targetPackage="com.ajyl.modules.asset.entity"
                                targetProject="src/main/java">
                
                <property name="enableSubPackages" value="false" />
                
                <property name="constructorBased" value="true" />
                
                <property name="trimStrings" value="true" />
                
                <property name="immutable" value="false" />
            </javaModelGenerator>
    
            
            <sqlMapGenerator targetPackage="mapper"
                             targetProject="src/main/resource">
                
                <property name="enableSubPackages" value="false" />
            </sqlMapGenerator>
    
            
            <javaClientGenerator type="XMLMAPPER"
                                 targetPackage="com.ajyl.modules.asset.dao" targetProject="src/main/java">
                
                <property name="enableSubPackages" value="false" />
            </javaClientGenerator>
    
            <table tableName="asset_product_feedback" domainObjectName="AssetProductFeedback"
                   enableCountByExample="false" enableUpdateByExample="false"
                   enableDeleteByExample="false" enableSelectByExample="false"
                   selectByExampleQueryId="false">
            </table>
        </context>
    </generatorConfiguration>

（复制走改改就好！  ）

这里提一下要注意的地方啊！

> 因为用的是mysql-8.0.11
> 
> 所以配置有所不同  
> 
> 相信你们用8.0.11启动项目连接数据库的时候就遇到过了
> 
> ***主要就是新版本有新特性，首先，最新官方支持将com.mysql.jdbc.Driver改为com.mysql.cj.jdbc.Driver，此外mysql8.0是不需要建立ssl连接的，你需要显示关闭，即url中的useSSL=false；最后你需要设置CST，CST可视为美国、澳大利亚、古巴或中国的标准时间。serverTimezone是设置时区的，大家可以查一下相关资料了解一下哦！。***

![70 1][]

这样一配置 就成功了  现在我们来测试一下  吧！

在右侧打开maven面板在Plugin下打开Mybatis-generator下的mybatis-generator:fenerate

右键Run它！

![70 2][]

配置没错就会一路启动成功   entity mapper xml都已经生成好了

![70 3][]

看看生成的文件

![70 4][]

已经成功了  ！！！（点个赞吧！）

再来说说    遇到的一些问题吧！

![70 5][]

报错的代码

[INFO] ------------------------------------------------------------------------
    [INFO] BUILD FAILURE
    [INFO] ------------------------------------------------------------------------
    [INFO] Total time: 2.581 s
    [INFO] Finished at: 2018-08-05T11:51:49+08:00
    [INFO] ------------------------------------------------------------------------
    [ERROR] Failed to execute goal org.mybatis.generator:mybatis-generator-maven-plugin:1.3.5:generate (default-cli) on project smart-campus: The server time zone value 'ÖÐ¹ú±ê×¼Ê±¼ä' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support. -> [Help 1]
    [ERROR] 
    [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
    [ERROR] Re-run Maven using the -X switch to enable full debug logging.
    [ERROR] 
    [ERROR] For more information about the errors and possible solutions, please read the following articles:
    [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
    
    Process finished with exit code 1

拉到后面看报 to use a more specifc time zone value if you want to utilize time zone support. ->

说没有给他使用时区   请给他设置一个具体的时区值

我们就得在connectionURL的配置上加        ?serverTimezone=UTC

![70 6][]

加上就可以解决了

OVER  安排

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