问答详情
源自:2-4 Mybatis自动生成器使用方式

无法连接数据库

[ERROR] Failed to execute goal org.mybatis.generator:mybatis-generator-maven-plugin:1.3.5:generate (default-cli) on project miaosha: Communications link failure

提问者:幕布斯6739812 2019-01-23 17:37

个回答

  • 龙虾三少
    2019-01-23 23:22:48
    已采纳

    查看下jdbc连接串的配置,mysql maven的版本是5.1的,用mysql 6的server就会有问题

  • 许安强
    2020-10-05 22:21:45

    请问能出一个mysql8的配置吗,我也报的这个问题,不知道哪的问题了,jdbc.driver都替换了


    1、这是我的mybatis-generator.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="DB2Tables"    targetRuntime="MyBatis3">
            <commentGenerator>
                <property name="suppressDate" value="true"/>
                <property name="suppressAllComments" value="true"/>
            </commentGenerator>
            <!--数据库链接地址账号密码-->
            <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/miaosha?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;serverTimezone=GMT&amp;nullCatalogMeansCurrent=true"
                            userId="root" password="123456">
            </jdbcConnection>
            <javaTypeResolver>
                <property name="forceBigDecimals" value="false"/>
            </javaTypeResolver>
            <!--生成DataObject类存放位置-->
            <javaModelGenerator targetPackage="com.miaoshaoproject.dataobject"
                                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="mapping"
                             targetProject="src/main/resources">
                <property name="enableSubPackages" value="true" />
            </sqlMapGenerator>
            <!--生成DAO类型的文件-->
            <javaClientGenerator targetPackage="com.miaoshaoproject.dao"
                                 targetProject="src/main/java"
                                 type="XMLMAPPER">
                <property name="enableSubPackages" value="false" />
            </javaClientGenerator>
            <!--生成对应表及类名-->
            <!--<table tableName="user_info" domainObjectName="UserDO" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>-->
            <table tableName="user_info" domainObjectName="UserDO"></table>
            <table tableName="user_password" domainObjectName="UserPasswordDO"></table>
        </context>
    </generatorConfiguration>

    2、这是我的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.miaoshaoproject</groupId>
      <artifactId>miaoshao</artifactId>
      <version>1.0-SNAPSHOT</version>
    
      <name>miaoshao</name>
      <!-- FIXME change it to the project's website -->
      <url>http://www.example.com</url>
    
      <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
      </parent>
    
      <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
      </properties>
    
      <dependencies>
        <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    
        <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>8.0.11</version>
        </dependency>
    
        <dependency>
          <groupId>com.alibaba</groupId>
          <artifactId>druid</artifactId>
          <version>1.1.3</version>
        </dependency>
    
        <dependency>
          <groupId>org.mybatis.spring.boot</groupId>
          <artifactId>mybatis-spring-boot-starter</artifactId>
          <version>1.3.1</version>
        </dependency>
    
        <dependency>
          <groupId>org.mybatis.generator</groupId>
          <artifactId>mybatis-generator-core</artifactId>
          <version>1.3.5</version>
        </dependency>
    
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.11</version>
          <scope>test</scope>
        </dependency>
      </dependencies>
    
      <build>
        <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
          <plugins>
            <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
            <plugin>
              <artifactId>maven-clean-plugin</artifactId>
              <version>3.1.0</version>
            </plugin>
            <!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
            <plugin>
              <artifactId>maven-resources-plugin</artifactId>
              <version>3.0.2</version>
            </plugin>
            <plugin>
              <artifactId>maven-compiler-plugin</artifactId>
              <version>3.8.0</version>
            </plugin>
            <plugin>
              <artifactId>maven-surefire-plugin</artifactId>
              <version>2.22.1</version>
            </plugin>
            <plugin>
              <artifactId>maven-jar-plugin</artifactId>
              <version>3.0.2</version>
            </plugin>
            <plugin>
              <artifactId>maven-install-plugin</artifactId>
              <version>2.5.2</version>
            </plugin>
            <plugin>
              <artifactId>maven-deploy-plugin</artifactId>
              <version>2.8.2</version>
            </plugin>
            <!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
            <plugin>
              <artifactId>maven-site-plugin</artifactId>
              <version>3.7.1</version>
            </plugin>
            <plugin>
              <artifactId>maven-project-info-reports-plugin</artifactId>
              <version>3.0.0</version>
            </plugin>
    
            <plugin>
              <groupId>org.mybatis.generator</groupId>
              <artifactId>mybatis-generator-maven-plugin</artifactId>
              <version>1.3.5</version>
              <dependencies>
                <dependency>
                  <groupId>org.mybatis.generator</groupId>
                  <artifactId>mybatis-generator-core</artifactId>
                  <version>1.3.5</version>
                </dependency>
                <dependency>
                  <groupId>mysql</groupId>
                  <artifactId>mysql-connector-java</artifactId>
                  <version>8.0.11</version>
                </dependency>
              </dependencies>
              <executions>
                <execution>
                  <id>mybatis generator</id>
                  <phase>package</phase>
                  <goals>
                    <goal>generate</goal>
                  </goals>
                </execution>
              </executions>
              <configuration>
                <!-- 允许移动生成的文件-->
                <verbose>true</verbose>
                <!--不允许覆盖文件-->
                <overwrite>true</overwrite>
                <configurationFile>src/main/resources/mybatis-generator.xml</configurationFile>
              </configuration>
            </plugin>
    
          </plugins>
        </pluginManagement>
        <plugins>
          <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
              <source>8</source>
              <target>8</target>
            </configuration>
          </plugin>
        </plugins>
    
      </build>
    </project>