Java 我已将useSSL设置为false，但仍收到警告

我正在设置一个没有Hibernate.xml的Hibernate项目

因此，我将Hibernate配置为：

public class HibernateUtil {

    private static SessionFactory sessionFactory;

    static {
            try {
                  Class.forName("com.mysql.jdbc.Driver");
                } catch (ClassNotFoundException e) {
                  e.printStackTrace();
                }

                Configuration cnf = new Configuration();

                // Properties
                cnf.setProperty("hibernate.connection.driver_class", "com.mysql.jdbc.Driver");
                cnf.setProperty("hibernate.connection.url", "jdbc:mysql://localhost:3306/test_db?useSSL=false‌​");
                cnf.setProperty("hibernate.connection.username", "root");     
                cnf.setProperty("hibernate.connection.password", "root");
                cnf.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
                cnf.setProperty("hibernate.hbm2ddl.auto", "update");
                cnf.setProperty("hibernate.show_sql", "true");
                cnf.setProperty(" hibernate.connection.pool_size", "1");

                StandardServiceRegistryBuilder builder = new StandardServiceRegistryBuilder().applySettings(cnf.getProperties());
                sessionFactory = cnf.buildSessionFactory(builder.build());
        // Class mappings
    }

    public static SessionFactory getSessionFactory(){
        return sessionFactory;
    }
}

当我执行Hibernate日志时，这一行：

INFO:HHH10001005:在URL[jdbc:mysql://localhost:3306/test_db?useSSL=false‌​]

执行后，我得到以下异常：

Exception in thread "main" java.lang.ExceptionInInitializerError
at core.Tester.main(Tester.java:10)
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:271)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:233)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:242)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:83)
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:418)
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:87)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:691)
at database.HibernateUtil.<clinit>(HibernateUtil.java:34)
... 1 more
Caused by: org.hibernate.exception.JDBCConnectionException: Error calling Driver#connect
at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator$1$1.convert(BasicConnectionCreator.java:105)
at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.convertSqlException(BasicConnectionCreator.java:123)
at org.hibernate.engine.jdbc.connections.internal.DriverConnectionCreator.makeConnection(DriverConnectionCreator.java:41)
at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.createConnection(BasicConnectionCreator.java:58)
at org.hibernate.engine.jdbc.connections.internal.PooledConnections.addConnections(PooledConnections.java:123)
at org.hibernate.engine.jdbc.connections.internal.PooledConnections.<init>(PooledConnections.java:42)
at org.hibernate.engine.jdbc.connections.internal.PooledConnections.<init>(PooledConnections.java:20)
at org.hibernate.engine.jdbc.connections.internal.PooledConnections$Builder.build(PooledConnections.java:161)
at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildPool(DriverManagerConnectionProviderImpl.java:109)
at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:72)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:242)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:145)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:259)
... 14 more
Caused by: java.sql.SQLException: The connection property 'useSSL' only accepts values of the form: 'true', 'false', 'yes' or 'no'. The value 'false‌​' is not in this set.
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:964)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:897)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:886)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:860)
at com.mysql.jdbc.ConnectionPropertiesImpl$ConnectionProperty.validateStringValues(ConnectionPropertiesImpl.java:314)
at com.mysql.jdbc.ConnectionPropertiesImpl$BooleanConnectionProperty.initializeFrom(ConnectionPropertiesImpl.java:91)
at com.mysql.jdbc.ConnectionPropertiesImpl$ConnectionProperty.initializeFrom(ConnectionPropertiesImpl.java:216)
at com.mysql.jdbc.ConnectionPropertiesImpl.initializeProperties(ConnectionPropertiesImpl.java:2503)
at com.mysql.jdbc.ConnectionImpl.initializeDriverProperties(ConnectionImpl.java:3153)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:774)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:400)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330)
at org.hibernate.engine.jdbc.connections.internal.DriverConnectionCreator.makeConnection(DriverConnectionCreator.java:38)
... 29 more

线程“main”java.lang.ExceptionInInitializeError中的异常 位于core.Tester.main（Tester.java:10） 原因：org.hibernate.service.spi.ServiceException:无法创建请求的服务[org.hibernate.engine.jdbc.env.spi.jdbc环境] 位于org.hibernate.service.internal.AbstractServiceRegistryImpl.createService（AbstractServiceRegistryImpl.java:271） 位于org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpl.java:233） 位于org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:210） 位于org.hibernate.engine.jdbc.internal.jdbcservicesiml.configure（jdbcservicesiml.java:51） 位于org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService（StandardServiceRegistryImpl.java:94） 位于org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpl.java:242） 位于org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:210） 位于org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes（MetadataBuildingProcess.java:352） 位于org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete（MetadataBuildingProcess.java:111） 位于org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build（MetadataBuildingProcess.java:83） 位于org.hibernate.boot.internal.MetadataBuilderImpl.build（MetadataBuilderImpl.java:418） 位于org.hibernate.boot.internal.MetadataBuilderImpl.build（MetadataBuilderImpl.java:87） 位于org.hibernate.cfg.Configuration.buildSessionFactory（Configuration.java:691） 位于database.HibernateUtil.（HibernateUtil.java:34） …还有一个 原因：org.hibernate.exception.JDBCConnectionException:调用驱动程序#connect时出错 位于org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator$1$1.convert（BasicConnectionCreator.java:105） 位于org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.convertSqlException（BasicConnectionCreator.java:123） 位于org.hibernate.engine.jdbc.connections.internal.DriverConnectionCreator.makeConnection（DriverConnectionCreator.java:41） 位于org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.createConnection（BasicConnectionCreator.java:58） 位于org.hibernate.engine.jdbc.connections.internal.PooledConnections.addConnections（PooledConnections.java:123） 位于org.hibernate.engine.jdbc.connections.internal.PooledConnections.（PooledConnections.java:42） 位于org.hibernate.engine.jdbc.connections.internal.PooledConnections.（PooledConnections.java:20） 位于org.hibernate.engine.jdbc.connections.internal.PooledConnections$Builder.build（PooledConnections.java:161） 位于org.hibernate.engine.jdbc.connections.internal.DriverManager连接ProviderImpl.buildPool（DriverManager连接ProviderImpl.java:109） 位于org.hibernate.engine.jdbc.connections.internal.DriverManager连接ProviderImpl.configure（DriverManager连接ProviderImpl.java:72） 位于org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService（StandardServiceRegistryImpl.java:94） 位于org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpl.java:242） 位于org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:210） 位于org.hibernate.engine.jdbc.env.internal.jdbconvironmentinitiator.buildJdbcConnectionAccess（jdbconvironmentinitiator.java:145） 位于org.hibernate.engine.jdbc.env.internal.jdbconvironmentinitiator.initiateService（jdbconvironmentinitiator.java:66） 位于org.hibernate.engine.jdbc.env.internal.jdbconvironmentinitiator.initiateService（jdbconvironmentinitiator.java:35） 位于org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService（StandardServiceRegistryImpl.java:88） 位于org.hibernate.service.internal.AbstractServiceRegistryImpl.createService（AbstractServiceRegistryImpl.java:259） …还有14个 原因：java.sql.SQLException:连接属性“useSSL”只接受形式为“true”、“false”、“yes”或“no”的值。值为“false”‌​' 不在这一组。 位于com.mysql.jdbc.SQLError.createSQLException（SQLError.java:964） 位于com.mysql.jdbc.SQLError.createSQLException（SQLError.java:897） 位于com.mysql.jdbc.SQLError.createSQLException（SQLError.java:886） 位于com.mysql.jdbc.SQLError.createSQLException（SQLError.java:860） 位于com.mysql.jdbc.ConnectionPropertiesImpl$ConnectionProperty.validateStringValues（ConnectionPropertiesImpl.java:314） 在com.mysql.jdbc.ConnectionPropertiesImpl$BooleanConnectionProperty.initializeFrom（ConnectionPropertiesImpl.java:91） 在com.mysql.jdbc.ConnectionPropertiesImpl$ConnectionProperty.initializeFrom上（ConnectionPropertiesImpl.java:216） 位于com.mysql.jdbc.ConnectionPropertiesImpl.initializeProperties（ConnectionPropertiesImpl.java:2503） 位于com.mysql.jdbc.ConnectionImpl.initializeDriverProperties（ConnectionImpl.java:3153） 位于com.mysql.jdbc.ConnectionImpl（ConnectionImpl.java:774） 位于com.mysql.jdbc.JDBC4Connection（JDBC4Connection.java:47） 位于sun.reflect.NativeConstructorAccessorImpl.newInstance0（本机方法） 位于sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:62） 在sun.reflect.DelegatingConstructorAccessorImpl.newInstance（DelegatingConstructorAccessorImpl.java:45） 位于java.lang.reflect.Constructor.newInstance（Constructor.java:423） 位于com.mysql.jdbc.Util.HandleneInstance（Util.java:425） 位于com.mysql.jdbc.ConnectionImpl.getInstance（ConnectionImpl.java:400） 位于com.mysql.jdbc.NonRegisteringDriver.connect（NonRegisteringDriver.java:330） 位于org.hibernate.engine.jdbc.connections.internal.driverconnect