数据库方言: Unable to build EntityManagerFactory

出现如此错误

解决方法

基本上都是与数据库有关，看看数据库是不是启动了

看看是不是数据库方言写错了

在此列出

 

RDBMS 方言 

DB2 org.hibernate.dialect.DB2Dialect

DB2 AS/400 org.hibernate.dialect.DB2400Dialect

DB2 OS390 org.hibernate.dialect.DB2390Dialect

PostgreSQL org.hibernate.dialect.PostgreSQLDialect

MySQL org.hibernate.dialect.MySQLDialect

MySQL with InnoDB org.hibernate.dialect.MySQLInnoDBDialect

MySQL with MyISAM org.hibernate.dialect.MySQLMyISAMDialect

Oracle (any version) org.hibernate.dialect.OracleDialect

Oracle 9i/10g org.hibernate.dialect.Oracle9Dialect

Sybase org.hibernate.dialect.SybaseDialect

Sybase Anywhere org.hibernate.dialect.SybaseAnywhereDialect

Microsoft SQL Server org.hibernate.dialect.SQLServerDialect

SAP DB org.hibernate.dialect.SAPDBDialect

Informix org.hibernate.dialect.InformixDialect

HypersonicSQL org.hibernate.dialect.HSQLDialect

Ingres org.hibernate.dialect.IngresDialect

Progress org.hibernate.dialect.ProgressDialect

Mckoi SQL org.hibernate.dialect.MckoiDialect

Interbase org.hibernate.dialect.InterbaseDialect

Pointbase org.hibernate.dialect.PointbaseDialect

FrontBase org.hibernate.dialect.FrontbaseDialect

Firebird org.hibernate.dialect.FirebirdDialect