MySQL JDBC驱动程序无法使用连字符创建架构

我有一个应用程序，其架构为每个租户架构。但当tentant名称包含连字符时，模式创建失败。 数据源创建：

HikariDataSource ds = new HikariDataSource();
ds.setUsername(username);
ds.setPassword(password);
ds.setJdbcUrl("jdbc:mysql://localhost:3306/tenant-test");
ds.setDriverClassName("com.mysql.cj.jdbc.Driver");
ds.addDataSourceProperty( "allowMultiQueries" , "true" );
ds.addDataSourceProperty( "autoReconnect" , "true" );
ds.addDataSourceProperty( "characterEncoding" , "UTF-8" );
ds.addDataSourceProperty( "useUnicode" , "true" );
ds.addDataSourceProperty( "createDatabaseIfNotExist" , "true" );
ds.getConnection(); // exception thrown here

有什么我必须设置的属性吗？当模式存在时，一切正常。此外，还成功创建了不带连字符的架构。基于堆栈跟踪，它看起来像是mysql jdbc驱动程序中的一个问题

异常堆栈跟踪：

Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:455) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:136) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:369) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:198) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:467) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:541) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.2.0.jar:na]
    at org.flywaydb.core.internal.jdbc.JdbcUtils.openConnection(JdbcUtils.java:56) ~[flyway-core-5.2.4.jar:na]
    ... 54 common frames omitted
Caused by: com.mysql.cj.exceptions.CJException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-test' at line 1
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_144]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_144]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_144]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_144]
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:129) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:816) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:741) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:671) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeProtocol.changeDatabase(NativeProtocol.java:543) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeAuthenticationProvider.proceedHandshakeWithPluggableAuthentication(NativeAuthenticationProvider.java:706) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeAuthenticationProvider.connect(NativeAuthenticationProvider.java:202) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeProtocol.connect(NativeProtocol.java:1449) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.NativeSession.connect(NativeSession.java:165) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ~[mysql-connector-java-8.0.14.jar:8.0.14]

在MySQL中，破折号（连字符）字符不是不带引号的标识符中允许的字符

MySQL参考手册中记录了标识符规则：

---

若要使用连字符，必须对标识符加引号。通常我们使用反勾号字符，例如

 SELECT `foo` FROM `bar` 

---

如果sql_模式包括ANSI_引号，我们可以使用双引号来转义标识符

---

MySQL报告普遍存在的错误1064。将在堆栈跟踪中报告：

Caused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:905) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:830) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:455) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:136) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:369) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:198) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:467) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:541) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.2.0.jar:na]
    at org.flywaydb.core.internal.jdbc.JdbcUtils.openConnection(JdbcUtils.java:56) ~[flyway-core-5.2.4.jar:na]
    ... 54 common frames omitted
Caused by: com.mysql.cj.exceptions.CJException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-test' at line 1
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_144]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_144]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_144]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_144]
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:129) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:816) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:741) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:671) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeProtocol.changeDatabase(NativeProtocol.java:543) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeAuthenticationProvider.proceedHandshakeWithPluggableAuthentication(NativeAuthenticationProvider.java:706) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeAuthenticationProvider.connect(NativeAuthenticationProvider.java:202) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.protocol.a.NativeProtocol.connect(NativeProtocol.java:1449) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.NativeSession.connect(NativeSession.java:165) ~[mysql-connector-java-8.0.14.jar:8.0.14]
    at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:849) ~[mysql-connector-java-8.0.14.jar:8.0.14]

您的SQL语法有错误；检查与您的MySQL服务器版本对应的手册，以了解第1行中使用近'-test'的正确语法

---

我知道我可以使用反勾号使用sql命令在名称中使用连字符创建db。但在我的例子中，db是由mysql驱动程序创建的（createDatabaseIfNotExist为true），而且驱动程序似乎没有使用backticks。我在问是否有任何属性可以告诉驱动程序使用backticks，或者这是一个bug。@Michal:所以如果你已经知道所有这些事情。。。那么，为什么您没有尝试在JDBCURL中引用/转义数据库名称呢？我尝试过，但不起作用。。。ds.setJdbcUrl（“jdbc:mysql://localhost:3306/ +URLEncoder.encode（“

tenant test

”，“UTF-8”）；导致找不到任何数据库（即使没有连字符）。此异常：com.mysql.cj.exceptions.CJException:未知数据库“`

tenant

`”，我认为这是一个错误。“-我同意。我在上没有找到任何点击率，所以你可能想在那里报告这个问题。顺便说一句，我直接用mysql-connector-java-8.0.16中的

com.mysql.cj.jdbc.MysqlDataSource

复制了这个问题。jar@GordThompson