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| Problem inserting data into database Hi, I am trying to make a simple jsp program which eneters data eneterd by user in an html form called main.html. This is the code for main.html [code] <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <TITLE> Benthic_query </TITLE> </HEAD> <BODY> <form METHOD = POST ACTION="dataConnection.jsp"> Enter the name of the new table: <input type = text name = table_name size= 30> <br> Enter the number of the table: <input type = text name=table_number size=10> <p> <input type = Submit> </BODY> </HTML> And here is the code for dataConnection: [code] <%@ page import="java.sql.*" %> <%@ page import="javax.servlet.*" %> <%@ page import="javax.servlet.http.*" %> <% Connection conn = null; try { String query = "insert into benthic_query values('"+name+"', '"+number+"')"; String userName = "root"; String password = "abc"; String url = "jdbc:mysql://localhost/test"; String name= request.getParameter("table_name"); String number = request.getParameter("table_number"); Class.forName ("com.mysql.jdbc.Driver").newInstance(); //Loading the driver conn = DriverManager.getConnection(url, userName, password); //connect the appropriate driver to the database System.out.println("Connection opened successfully"); Statement stmt = conn.createStatement (); //Statement object sends the SQL statement to the DBMS stmt.executeUpdate ("query"); //executeQuery will return back some rows, executeUpdate does not return any rows stmt.close(); System.out.println("Connection opened successfully"); } catch (Exception e) { System.err.println("Cannot connect to the database"); } finally { if(conn != null) { try { conn.close(); System.out.println("Database connection closed successfully"); } catch (Exception e) { } } } // response.sendRedirect("success.htm"); %> <html> <body> <p> <a href = "thanks.html">CONTINUE </a> </p> </html> </body> And I am getting the following error as soon as I hit the submit button in main.html exception org.apache.jasper.JasperException: Unable to compile class for JSP An error occurred at line: 7 in the jsp file: /sjagwani/dataConnection.jsp Generated servlet error:C:\Jakarta\jakarta-tomcat-5.0.28\work\Catalina\localhost\_\org\apache\jsp\sjagwani\dataConnection_jsp.java:58: cannot find symbol symbol : variable name location: class org.apache.jsp.sjagwani.dataConnection_jsp String query = "insert into benthic_query values('"+name+"', '"+number+"')"; ^An error occurred at line: 7 in the jsp file: /sjagwani/dataConnection.jspGenerated servlet error:C:\Jakarta\jakarta-tomcat-5.0.28\work\Catalina\localhost\_\org\apache\jsp\sjagwani\dataConnection_jsp.java:58: cannot find symbol symbol : variable number location: class org.apache.jsp.sjagwani.dataConnection_jsp String query = "insert into benthic_query values('"+name+"', '"+number+"')"; ^2errors org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84) org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332) org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:412) org.apache.jasper.compiler.Compiler.compile(Compiler.java:472) org.apache.jasper.compiler.Compiler.compile(Compiler.java:451) org.apache.jasper.compiler.Compiler.compile(Compiler.java:439) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) javax.servlet.http.HttpServlet.service(HttpServlet.java:802)Can someone please tell me where am I going worng.Thanks, |
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| Re: Problem inserting data into database Hi Did you find out the solution about how to enter the integer or datetime values from HTML form data??? If yes then please let me know what you did!!! thanks |
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| Re: Problem inserting data into database Hi It shows that the variables number and name are undefined,So place the String name= request.getParameter("table_name"); String number = request.getParameter("table_number"); before String query = "insert into benthic_query values('"+name+"', '"+number+"')"; Regards, |
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| Re: Problem inserting data into database Any idea about inserting DateTime format from form feils which is a string to an ORALCLE Database?? |
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| Re: Problem inserting data into database You do I hope realise that it's very bad practice to do such things in a JSP? Send the form submit to a servlet and do it there, then send the result of that operation back to a JSP for display. |
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