我试图从MYSQL下载图像(.png)文件。 有些时候它工作fine.unable找到确切的问题。 它在Jboss服务器上正常工作。抛出一个错误,同时试图在我的本地计算机上运行Apche。java.sql.SQLException:在mysql结果集结束后
请帮我修复错误。 这是我的java代码。
这里是堆栈跟踪输出:
java.sql.SQLException: After end of result set
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1074)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:988)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:974)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:919)
at com.mysql.jdbc.ResultSetImpl.checkRowPos(ResultSetImpl.java:854)
at com.mysql.jdbc.ResultSetImpl.getAsciiStream(ResultSetImpl.java:1275)
at org.apache.tomcat.dbcp.dbcp.DelegatingResultSet.getAsciiStream(DelegatingResultSet.java:253)
at org.apache.tomcat.dbcp.dbcp.DelegatingResultSet.getAsciiStream(DelegatingResultSet.java:253)
at com.ninenexus.model.Signature.getSignatureImage(Signature.java:173)
at com.ninenexus.servlets.SaveMySignature.mySignatureDisplay(SaveMySignature.java:69)
at com.ninenexus.servlets.SaveMySignature.doPost(SaveMySignature.java:35)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:380)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
其中的堆栈跟踪? – 2013-05-07 11:50:31
什么是错误,特别是当它不起作用时?一定要关闭'finally'块中的所有资源。另外,你为什么使用字符来表示二进制数据? – bdkosher 2013-05-07 11:50:55
Marco Forberg.in cath block – 2013-05-07 11:51:50