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java - Netbeans错误: Schema doesnt exist

转载 作者：行者123 更新时间：2023-12-02 09:46:49 28 4
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所以我试图通过一个简单的jsp页面在netbeans的java应用程序中访问我的底层数据库:

<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<sql:query var="rslt" dataSource="jdbc/cart">
   select isbn, title, quantity, price from dbsample.books
</sql:query>
<html>
<head>
     <title>JDBC Connection Test</title>
 </head>
 <body>
    <h1>Available books:</h1>
    <c:forEach var="book" items="${rslt.rows}">
        <b>Isbn:</b> ${book.isbn}<br/>
        <b>Title:</b> ${book.title}<br/>
        <b>Price:</b> $${book.price}<br/>
        <b>In stock:</b> ${book.quantity}<br/>
        <br/>
    </c:forEach>
 </body>
</html>

但我收到此错误:

select isbn, title, quantity, price from dbsample.books : Schema 'DBSAMPLE' does not exist

这是堆栈跟踪:

javax.servlet.ServletException: select isbn, title, quantity, price from dbsample.books : Schema 'DBSAMPLE' does not exist at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:951) at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:886) at org.apache.jsp.testPage_jsp._jspService(testPage_jsp.java:80) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:411) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:473) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:377) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:875) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:739) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:575) at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:546) at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:428) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:378) at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:630) at com.sun.faces.application.view.JspViewHandlingStrategy.executePageToBuildView(JspViewHandlingStrategy.java:363) at com.sun.faces.application.view.JspViewHandlingStrategy.buildView(JspViewHandlingStrategy.java:153) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:99) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188) at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191) at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168) at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189) at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288) at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206) at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136) at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114) at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838) at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113) at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115) at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55) at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135) at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564) at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544) at java.lang.Thread.run(Thread.java:724) Caused by: java.sql.SQLSyntaxErrorException: Schema 'DBSAMPLE' does not exist at org.apache.derby.client.am.SQLExceptionFactory40.getSQLException(Unknown Source) at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source) at org.apache.derby.client.am.Connection.prepareStatement(Unknown Source) at com.sun.gjc.spi.base.ConnectionHolder.prepareStatement(ConnectionHolder.java:586) at com.sun.gjc.spi.jdbc40.ConnectionWrapper40.prepareCachedStatement(ConnectionWrapper40.java:255) at com.sun.gjc.spi.jdbc40.ConnectionWrapper40.prepareCachedStatement(ConnectionWrapper40.java:52) at com.sun.gjc.spi.ManagedConnectionImpl.prepareCachedStatement(ManagedConnectionImpl.java:992) at com.sun.gjc.spi.jdbc40.ConnectionWrapper40.prepareStatement(ConnectionWrapper40.java:173) at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.doEndTag(QueryTagSupport.java:255) at org.apache.jsp.testPage_jsp._jspx_meth_sql_query_0(testPage_jsp.java:119) at org.apache.jsp.testPage_jsp._jspService(testPage_jsp.java:60) ... 47 more Caused by: org.apache.derby.client.am.SqlException: Schema 'DBSAMPLE' does not exist at org.apache.derby.client.am.Statement.completeSqlca(Unknown Source) at org.apache.derby.client.net.NetStatementReply.parsePrepareError(Unknown Source) at org.apache.derby.client.net.NetStatementReply.parsePRPSQLSTTreply(Unknown Source) at org.apache.derby.client.net.NetStatementReply.readPrepareDescribeOutput(Unknown Source) at org.apache.derby.client.net.StatementReply.readPrepareDescribeOutput(Unknown Source) at org.apache.derby.client.net.NetStatement.readPrepareDescribeOutput_(Unknown Source) at org.apache.derby.client.am.Statement.readPrepareDescribeOutput(Unknown Source) at org.apache.derby.client.am.PreparedStatement.readPrepareDescribeInputOutput(Unknown Source) at org.apache.derby.client.am.PreparedStatement.flowPrepareDescribeInputOutput(Unknown Source) at org.apache.derby.client.am.PreparedStatement.prepare(Unknown Source) at org.apache.derby.client.am.Connection.prepareStatementX(Unknown Source) ... 56 more

现在我已经检查了我的 web.xml。据我所知，部署描述符是正确的。我已经检查了我的数据源，根据我的 persistance.xml，它似乎是正确的，我对数据库池进行了 ping 操作，它也成功了。我的架构名为 dbsample，并有一个名为 books 的表。

所以我不明白为什么它对我的 DBSAMPLE 说不存在。任何帮助将不胜感激。

编辑＃1在数据库中执行sql命令时它工作得很好。 enter image description here

最佳答案

虽然我回答这个问题可能有点晚了，但我遇到了同样的问题并解决了它。

问题是我没有在 persistnece.xml 中设置 JDBC 资源。我将其添加到我的 persistence.xml 中:

<jta-data-source>jdbc/resourcename</jta-data-source>

将 jdbc/resourcename 更改为您的 JDBC 资源!

关于java - Netbeans错误: Schema doesnt exist，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20593924/

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