学步园

org.hibernate.MappingException: No Dialect mapping for JDBC type: -1
	at org.hibernate.dialect.TypeNames.get(TypeNames.java:56)
	at org.hibernate.dialect.TypeNames.get(TypeNames.java:81)
	at org.hibernate.dialect.Dialect.getHibernateTypeName(Dialect.java:369)
	at org.hibernate.loader.custom.CustomLoader$Metadata.getHibernateType(CustomLoader.java:559)
	at org.hibernate.loader.custom.CustomLoader$ScalarResultColumnProcessor.performDiscovery(CustomLoader.java:485)
	at org.hibernate.loader.custom.CustomLoader.autoDiscoverTypes(CustomLoader.java:501)
	at org.hibernate.loader.Loader.getResultSet(Loader.java:1796)
	at org.hibernate.loader.Loader.doQuery(Loader.java:674)
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
	at org.hibernate.loader.Loader.doList(Loader.java:2220)
	at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
	at org.hibernate.loader.Loader.list(Loader.java:2099)
	at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:289)
	at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1695)
	at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:142)
	at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:152)
	at com.cnic.dao.UserDAO.isExists(UserDAO.java:47)
	at com.cnic.struts.action.LogonAction.execute(LogonAction.java:57)
	at org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:106)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
	at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:866)
	at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:716)
	at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1498)
	at java.lang.Thread.run(Thread.java:619)

今天遇到了一个问题，现在把调用栈贴出来。

有一个原因是因为hibernate不支持mySQL中的text数据类型，我把mySQL中的所有的text数据类型都改成varchar类型，然后就运行正常了。

希望我的解决方法对大家有帮助！