Granny's Programming Pearls
"inside of every large program is a small program struggling to get out"
JavaRanch.com/granny.jsp
Win a copy of Python Continuous Integration and Delivery this week in the Python forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Liutauras Vilda
  • Bear Bibeault
  • Paul Clapham
  • Jeanne Boyarsky
Sheriffs:
  • Devaka Cooray
  • Junilu Lacar
  • Tim Cooke
Saloon Keepers:
  • Tim Moores
  • Ron McLeod
  • Tim Holloway
  • Claude Moore
  • Stephan van Hulst
Bartenders:
  • Winston Gutkowski
  • Carey Brown
  • Frits Walraven

java.sql.SQLException: Before start of result set  RSS feed

 
Greenhorn
Posts: 12
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hello All,

I am creating a simple servlet, which is retrieving a value from the database. i am using eclipse IDE.

Here is the code.


Getting an error:



java.sql.SQLException: Before start of result set
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:910)
at com.mysql.jdbc.ResultSet.checkRowPos(ResultSet.java:692)
at com.mysql.jdbc.ResultSet.getStringInternal(ResultSet.java:5476)
at com.mysql.jdbc.ResultSet.getString(ResultSet.java:5420)
at Ex.doGet(Ex.java:39)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)


I do not understand, where i am wrong. Name of database, table, fileds are all right.
No typing error.

Please any help me with this thing.

 
Marshal
Posts: 63386
205
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Have you called next() before using the ResultSet? Try this Java™ Tutorials Page for more details.
 
Campbell Ritchie
Marshal
Posts: 63386
205
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Is the code throwing the Exception actually quoted here; it says at doGet but I can't seem to find doGet in your quoted code?
 
Rax Wer
Greenhorn
Posts: 12
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

Campbell Ritchie wrote:Is the code throwing the Exception actually quoted here; it says at doGet but I can't seem to find doGet in your quoted code?



Yes it is the same error, no doubt in that.
 
Rax Wer
Greenhorn
Posts: 12
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Thanks for replying....

Campbell Ritchie wrote:Have you called next() before using the ResultSet? Try this Java™ Tutorials Page for more details.




I am a beginner to this, can you please write the thing you are actually suggesting. So that it can be Corrected properly..
 
Bartender
Posts: 2651
18
C++ Linux Netbeans IDE
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
(As Campbell Ritchie says)

The exception hapended in Ex.doGet
You posted the code of Ex.doPost

[edit: mistyped name]
 
Rax Wer
Greenhorn
Posts: 12
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hello Everyone..
I am not using doGet method at all. Posted the same code i sun and the error produced.. Thats why i am not getting the thing that if doPost is used there, why m getting

Error:
at Ex.doGet(Ex.java:39)

Also there no such errorneous code on line 39.
 
Jan Cumps
Bartender
Posts: 2651
18
C++ Linux Netbeans IDE
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Can you check if the Ex class executed by your servlet container is compiled from the Ex class code that you show us?
 
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!