藤井树441 2022-03-29 16:20 采纳率: 93.8%
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已结题

Unknown database 'mybatis' maven

问题遇到的现象和发生背景

使用maven链接sql

问题相关代码，请勿粘贴截图

logback.iml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <!--
        CONSOLE ：表示当前的日志信息是可以输出到控制台的。
    -->
    <appender name="Console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>[%level] %blue(%d{HH:mm:ss.SSS}) %cyan([%thread]) %boldGreen(%logger{15}) - %msg %n</pattern>
        </encoder>
    </appender>

    <logger name="com.yang" level="DEBUG" additivity="false">
        <appender-ref ref="Console"/>
    </logger>


    <!--

      level:用来设置打印级别，大小写无关：TRACE, DEBUG, INFO, WARN, ERROR, ALL 和 OFF
     ， 默认debug
      <root>可以包含零个或多个<appender-ref>元素，标识这个输出位置将会被本日志级别控制。
      -->
    <root level="DEBUG">
        <appender-ref ref="Console"/>
    </root>
</configuration>

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

    <typeAliases>
        <package name="com.yang.jopo"/>
    </typeAliases>

    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql:///mybatis?useSSL=false"/>
                <property name="username" value="root"/>
                <property name="password" value="1234"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper resource="tb_brandMapper.xml"/>
    </mappers>
</configuration>

tb_brandMapper.xml


<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="test">
    <select id="selectAll" resultType="com.yang.jopo.tb_brand">
        select * from per;
    </select>
</mapper>
运行结果及报错内容
D:\idea\jdk\bin\java.exe "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.3.1\lib\idea_rt.jar=55067:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.3.1\bin" -Dfile.encoding=UTF-8 -classpath D:\maven2-sql\target\classes;C:\Users\86176\.m2\repository\org\mybatis\mybatis\3.5.9\mybatis-3.5.9.jar;C:\Users\86176\.m2\repository\mysql\mysql-connector-java\5.1.32\mysql-connector-java-5.1.32.jar;C:\Users\86176\.m2\repository\org\slf4j\slf4j-api\1.7.20\slf4j-api-1.7.20.jar;C:\Users\86176\.m2\repository\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;C:\Users\86176\.m2\repository\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar com.yang.mybatis
[DEBUG] 16:15:04.284 [main] o.a.i.l.LogFactory - Logging initialized using 'class org.apache.ibatis.logging.slf4j.Slf4jImpl' adapter. 
[DEBUG] 16:15:04.300 [main] o.a.i.io.VFS - Class not found: org.jboss.vfs.VFS 
[DEBUG] 16:15:04.300 [main] o.a.i.i.JBoss6VFS - JBoss 6 VFS API is not available in this environment. 
[DEBUG] 16:15:04.300 [main] o.a.i.io.VFS - Class not found: org.jboss.vfs.VirtualFile 
[DEBUG] 16:15:04.300 [main] o.a.i.io.VFS - VFS implementation org.apache.ibatis.io.JBoss6VFS is not valid in this environment. 
[DEBUG] 16:15:04.300 [main] o.a.i.io.VFS - Using VFS adapter org.apache.ibatis.io.DefaultVFS 
[DEBUG] 16:15:04.300 [main] o.a.i.i.DefaultVFS - Find JAR URL: file:/D:/maven2-sql/target/classes/com/yang/jopo 
[DEBUG] 16:15:04.300 [main] o.a.i.i.DefaultVFS - Not a JAR: file:/D:/maven2-sql/target/classes/com/yang/jopo 
[DEBUG] 16:15:04.335 [main] o.a.i.i.DefaultVFS - Reader entry: tb_brand.class 
[DEBUG] 16:15:04.350 [main] o.a.i.i.DefaultVFS - Listing file:/D:/maven2-sql/target/classes/com/yang/jopo 
[DEBUG] 16:15:04.350 [main] o.a.i.i.DefaultVFS - Find JAR URL: file:/D:/maven2-sql/target/classes/com/yang/jopo/tb_brand.class 
[DEBUG] 16:15:04.351 [main] o.a.i.i.DefaultVFS - Not a JAR: file:/D:/maven2-sql/target/classes/com/yang/jopo/tb_brand.class 
[DEBUG] 16:15:04.352 [main] o.a.i.i.DefaultVFS - Reader entry: ����   7 @ 
[DEBUG] 16:15:04.355 [main] o.a.i.i.ResolverUtil - Checking to see if class com.yang.jopo.tb_brand matches criteria [is assignable to Object] 
[DEBUG] 16:15:04.402 [main] o.a.i.d.p.PooledDataSource - PooledDataSource forcefully closed/removed all connections. 
[DEBUG] 16:15:04.402 [main] o.a.i.d.p.PooledDataSource - PooledDataSource forcefully closed/removed all connections. 
[DEBUG] 16:15:04.402 [main] o.a.i.d.p.PooledDataSource - PooledDataSource forcefully closed/removed all connections. 
[DEBUG] 16:15:04.402 [main] o.a.i.d.p.PooledDataSource - PooledDataSource forcefully closed/removed all connections. 
[DEBUG] 16:15:04.468 [main] o.a.i.t.j.JdbcTransaction - Opening JDBC Connection 
Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: 
### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'mybatis'
### The error may exist in tb_brandMapper.xml
### The error may involve test.selectAll
### The error occurred while executing a query
### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'mybatis'
    at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:153)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:145)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:135)
    at com.yang.mybatis.main(mybatis.java:23)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'mybatis'
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:408)
    at com.mysql.jdbc.Util.getInstance(Util.java:383)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1062)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4208)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4140)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925)
    at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1747)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1287)
    at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2494)
    at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2527)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2309)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:408)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:419)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:344)
    at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:677)
    at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:189)
    at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:224)
    at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:219)
    at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.getConnection(UnpooledDataSource.java:95)
    at org.apache.ibatis.datasource.pooled.PooledDataSource.popConnection(PooledDataSource.java:432)
    at org.apache.ibatis.datasource.pooled.PooledDataSource.getConnection(PooledDataSource.java:89)
    at org.apache.ibatis.transaction.jdbc.JdbcTransaction.openConnection(JdbcTransaction.java:139)
    at org.apache.ibatis.transaction.jdbc.JdbcTransaction.getConnection(JdbcTransaction.java:61)
    at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:337)
    at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:86)
    at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62)
    at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:325)
    at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:89)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:151)
    ... 4 more

Process finished with exit code 1
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3条回答 默认 最新

  • 我是个老六 2022-03-29 16:35
    关注

    哥哥你咋又发一遍，上次已经说了你问题所在了呀

    img


    你的url明显写的有问题啊

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
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问题事件

  • 系统已结题 4月20日
  • 已采纳回答 4月12日
  • 创建了问题 3月29日

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