JSP mysql on linux

< pre>
when i am trying to connect to mysql database through JSP page in LINUX
i am getting the following error:
<b>com.mysql.jdbc.Driver not found in gnu.gcj.runtime.SystemClassLoader<b>
</pre>

Have you put the mysql driver in the common/lib folder?

Similar Messages

JSP + MYSQL question: input form value into a SQL table

Hello,
I am writing some JSP code to read input information from a input form to write this information into a SQL field.
My problems are:
- how can i pass the input form information to other jsp file ? (like Getproperty of something like this)
- how can i move the content of any input information into a variable ? I mean something like this:
String a1;
username.value.of.the.input.field.in.forum_jsp = a1.in.addmessage_jsp;and then:
int rowsAffected = stmt.executeUpdate("INSERT INTO forummessages (messagecode, " + " usercode, " + " messagedate, " + " message) VALUES(6,3,06/07/2007,'" + a1 + "')");------
The SQL table looks like this:
stmt.executeUpdate("CREATE TABLE forummessages (messagecode int AUTO_INCREMENT PRIMARY KEY, usercode int, messagedate date, message char(255) not null)");My codes are:
forum.jsp - this one should pass the input information to addmessage.jsp
<%@ page contentType="text/html; charset=iso-8859-2" %>
<%@ page import="java.sql.*" %>
<%
Connection con = null;
Statement stmt = null;
try {
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost:3306/mysql";
con = DriverManager.getConnection(url,"root", "");
stmt = con.createStatement();
String sql = "SELECT * FROM forummessages,users,bmwecode WHERE (forummessages.usercode=users.usercode) AND (users.bmwcode=bmwecode.bmwcode)";
ResultSet rs = stmt.executeQuery(sql);
%>
<html>
<head>
<title>JSP + MYSQL Teszt</title>
</head>
<body>
<a href="forum.jsp">Forum / Uj hozzaszolas</a>
<a href="userlist.jsp">Felhasznalok kilistazasa</a>
<a href="adduser.jsp">Felhasznalo hozzadasa</a>
<a href="deletemessage.jsp">Hozzaszolas torlese</a>
<br><br>
<form action="addmessage.jsp" method=post">
Felhasznalo:
<input type="text" name="username">
<br><br>
Hozzaszolas:
<input type="text" name="message">
<br><br>
<input type="submit" value="Uj hozzaszolas">
<br><br>
<table border="0">
<tr>
<th>messagecode</th>
<th>user</th>
<th>car type</th>
<th>message</th>
</tr>
<%
while(rs.next()){
%>
<tr>
<td><%=rs.getInt("messagecode") %></td>
<td><%=rs.getString("username") %></td>
<td><%=rs.getString("bmwtype") %></td>
<td><%=rs.getString("message") %></td>
</tr>
<%
} // end while
%>
</table>
</body>
</html>
<%
} catch (Exception e) {
out.println("<font color=red><h3>Error:</h3></font>" + e);
e.printStackTrace();
} finally {
try {
    if (stmt!=null) {
      stmt.close();
    if (con!=null) {
      con.close();
} catch (Exception e) {
    e.printStackTrace();
%> ----
addmessage.jsp
<%@ page contentType="text/html; charset=iso-8859-2" %>
<%@ page import="java.sql.*" %>
<%
Connection con = null;
Statement stmt = null;
try {
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost:3306/mysql";
con = DriverManager.getConnection(url,"root", "");
stmt = con.createStatement();
int rowsAffected = stmt.executeUpdate("INSERT INTO forummessages (messagecode, " + " usercode, " + " messagedate, " + " message) VALUES(6,3,06/07/2007,'" + a1 + "')");
} catch (Exception e) {
out.println("<font color=red><h3>Hiba:</h3></font>" + e);
e.printStackTrace();
} finally {
try {
    if (stmt!=null) {
      stmt.close();
    if (con!=null) {
      con.close();
} catch (Exception e) {
    e.printStackTrace();
%>
<a href="forum.jsp">Forum / Uj hozzaszolas</a>
<a href="userlist.jsp">Felhasznalok kilistazasa</a>
<a href="adduser.jsp">Felhasznalo hozzadasa</a>
<a href="deletemessage.jsp">Hozzaszolas torlese</a>
<br><br>---
Thank you for your help in advance.

SELECT DISTINCT
hou.name
,poh.segment1 po_num
,pol.line_num po_line_num
,poh.currency_code
--,trunc(poh.creation_date) po_creation_date
,pol.cancel_flag
,msi.segment1 item_num
,pol.unit_price
,round(cost.item_cost,5)
,round((&p_rate * pol.unit_price),5) "CONVERSION"
,(cost.item_cost - round((&p_rate * pol.unit_price),5)) difference
,pov.vendor_name
FROM
po.po_headers_all poh
,po.po_lines_all pol
,po.po_vendors pov
,hr.hr_all_organization_units hou
,inv.mtl_system_items_b msi
,bom.cst_item_costs cost
WHERE
poh.po_header_id = pol.po_header_id
and pov.vendor_id = poh.vendor_id
and poh.org_id = hou.organization_id
and hou.organization_id = :p_operating_unit
and poh.currency_code = :p_currency
and poh.creation_date between :po_creation_date_from and :po_creation_date_to
and poh.type_lookup_code = 'BLANKET'
and msi.inventory_item_id = pol.item_id
and cost.INVENTORY_ITEM_ID = pol.ITEM_ID
--and (cost.item_cost - pol.unit_price) <> 0
and (cost.item_cost - round((&p_rate * pol.unit_price),5)) <> 0
and cost.organization_id = 1
and msi.organization_id = 1
and cost.cost_type_id = 3 --- Pending cost type
and nvl(upper (pol.closed_code),'OPEN') not in('CANCELLED', 'CLOSED', 'FINALLY CLOSED', 'REJECTED')
and nvl(upper (poh.closed_code),'OPEN') not in('CANCELLED', 'CLOSED', 'FINALLY CLOSED', 'REJECTED')
and nvl(pol.cancel_flag, 'N') = 'N'
and &p_rate user parameter
I want this p_rate to be passed as a user parameter.

JSP - MYSQL HELP

HI,
Im trying to create a JSP which connects to a mysql database.
I have downloaded all the connectivity drivers and dont know what to do from this stage.
I have heard people talking about tomcat and apache but was wondering if i need them?
Im new to all this connectivity bit so this is why i need help!!
If anyone has any good links to some good jsp/mysql tutorials, please share!!!
Thanks a lot

You need a servlet/JSP engine, to start. You can't write or deploy a JSP without a servlet/JSP engine. Apache Tomcat is a good one to start with. It's free and robust:
http://jakarta.apache.org/tomcat
Here's a tutorial to get you started with servlets/JSP:
http://www.apl.jhu.edu/~hall/java/Servlet-Tutorial/
Do a Google search or look at the Sun tutorials if you want more. - MOD

JSP MYSQL ERROR moving in resultset

Hi I am new to jsp & mysql .
I am trying to fetch data in a multiple select list box in my jsp page from a table in mysql . It fetches the first value and then exception is generated as no data found while there is data in the table . The same data in the table is fetched when i fetch in a dynamic table . I observed that i am having problems in fetching data only in list box . Please help me. It is a part of my project.
Thanks

Hi
The code was generated my macromedia dreamweaver but still i'll writing it below:
<select name="select" size="1" multiple>
<%
while (Recordset1_hasData) {
%>
<option value="<%=((Recordset1.getObject("overridetype")!=null)?Recordset1.getObject("overridetype"):"")%>"><%=((Recordset1.getObject("overridetype")!=null)?Recordset1.getObject("overridetype"):"")%></option>
<%
Recordset1_hasData = Recordset1.next();
Recordset1.close();
Recordset1 = StatementRecordset1.executeQuery();
Recordset1_hasData = Recordset1.next();
Recordset1_isEmpty = !Recordset1_hasData;
%>
</select>

JSP/MYSQL Hosting

Hey all,
Im looking to host a JSP/MYSQL site. Please tell me a hosting provider. also are there any providers in India that you know of . would really help if tis the same country.
after looking through a lot of sites i have shortlisted.
http://www.eatj.com and http://4java.ca tell me if there is anything in the same budget range. Are there anybody who is availing these services. please give your comments on the same
Thanks
Ritesh

google myjavaserver
it's free, but slow and space limited...

JSP + MySQL + Linux + Tomcat4.1 Chinese display problem

Hello all!
I have a problem to use JSP to display Chinese which is read from MySQL database. It works well under Windows XP. But when I move the code to Linux. The Chinese can't be displayed any more.
The only way to display Chinese correctly is to remove <%@ page contentType="text/html; charset=Big5" %>. This requires to set the browser encoding manually every time, which is not what I want.
I am not sure if I need store the Chinese as Big5 or other unicode in MySQL. Right now, I just insert it into database directly without specifying the characters set.
I have been searching for solutions for quite a while and can't get the answer. Please help me to conquer this problem!
Below is the simplified version of my code:
<html>
<head>
<%@ page contentType="text/html; charset=Big5" %>
<%@ page import="java.util.*" %>
<%@ page import="java.sql.*" %>
<%@ page import="ConnectionPool.*" %>
<%@ page session="true" %>
</head>
<body>
<table>
<%
ServletContext context = getServletContext();
ConnectionPool connectionPool = (ConnectionPool)context.getAttribute("ConnectionPool");
Connection connection = connectionPool.getConnection();
Statement statement = connection.createStatement();
String sqlCmd = "SELECT chinese_word FROM word";
String chinese_word;
ResultSet rs = statement.executeQuery(sqlCmd);
while (rs.next())
     chinese_word = rs.getString("chinese_word ");
     out.println("<tr><td>" + chinese_word );
     out.println("</td></tr>");
connectionPool.free(connection);
%>
</table>
</body>
</html>
Thanks a bunch,
Sophie

hi
i am india so no much command on chiness, but, as a solution process , i suggest this
in jsp, response is the default object, so, whereever u want chiness char, use
response.setContentType("text/html; charset=Big5");
and again swith to normal english mode
hope it proceeds...
pranav

JSP with MYSQL on linux and windows2k

I am using a linux box as a web server with tomcat and mysql. I aslo have a mirror on a Win2k machine running the same environment.
I have a jsp file that uses a bean to update the database and it works on the win2k environment but not linux.
In windows I see error messages in the tomcat console, how do I see these message on linux?
Thank you,
Paul.

Did you check ALL of the files?
There are files named "localhost_log.TODAYSDATE.txt", there are files named "catalina_log.TODAYSDATE.txt", and there's a file called "catalina.out".
"catalina.out" appears to contain information very similar to the DOS output screen on the Windows platform.
If those files don't have what you're looking for, then you'll have to get help from someone with more expertise than myself!

Java with MYSQL in Linux

i am using JSP in Linux Platform. when i connected to mysql with mysql driver for odbc by using the following code,
import java.sql.*;
public class TestMysql
public static void main(String args[]) {
try {
          Connection con;
          String connStr = "jdbc:mysql://localhost/test?user=root&password=mysql";
          Class.forName( "com.mysql.jdbc.Driver" ).newInstance();
          System.out.println("OK");
          con = DriverManager.getConnection( connStr );
          System.out.println("Again OK");
catch( Exception x )
x.printStackTrace();
i got the following exception
OK
java.sql.SQLException: Error during query: Unexpected Exception: java.io.CharConversionException message given: null
Nested Stack Trace:
** BEGIN NESTED EXCEPTION **
java.io.CharConversionException
STACKTRACE:
java.io.CharConversionException
at gnu.gcj.convert.Input_iconv.read(char[], int, int) (/usr/lib/libgcj.so.5.0.0)
at java.lang.String.init(byte[], int, int, java.lang.String) (/usr/lib/libgcj.so.5.0.0)
at java.lang.String.String(byte[], int, int, java.lang.String) (/usr/lib/libgcj.so.5.0.0)
at com.mysql.jdbc.SingleByteCharsetConverter.SingleByteCharsetConverter(java.lang.String) (Unknown Source)
at com.mysql.jdbc.SingleByteCharsetConverter.initCharset(java.lang.String) (Unknown Source)
at com.mysql.jdbc.SingleByteCharsetConverter.getInstance(java.lang.String, com.mysql.jdbc.Connection) (Unknown Source)
at com.mysql.jdbc.Connection.getCharsetConverter(java.lang.String) (Unknown Source)
at com.mysql.jdbc.StringUtils.getBytes(java.lang.String, java.lang.String, java.lang.String, boolean, com.mysql.jdbc.Connection) (Unknown Source)
at com.mysql.jdbc.Buffer.writeStringNoNull(java.lang.String, java.lang.String, java.lang.String, boolean, com.mysql.jdbc.Connection) (Unknown Source)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(com.mysql.jdbc.Statement, java.lang.String, java.lang.String, com.mysql.jdbc.Buffer, int, com.mysql.jdbc.Connection, int, int, boolean, java.lang.String, boolean) (Unknown Source)
at com.mysql.jdbc.Connection.execSQL(com.mysql.jdbc.Statement, java.lang.String, int, com.mysql.jdbc.Buffer, int, int, boolean, java.lang.String, boolean, boolean) (Unknown Source)
at com.mysql.jdbc.Connection.configureClientCharacterSet() (Unknown Source)
at com.mysql.jdbc.Connection.initializePropsFromServer() (Unknown Source)
at com.mysql.jdbc.Connection.createNewIO(boolean) (Unknown Source)
at com.mysql.jdbc.Connection.Connection(java.lang.String, int, java.util.Properties, java.lang.String, java.lang.String) (Unknown Source)
at com.mysql.jdbc.NonRegisteringDriver.connect(java.lang.String, java.util.Properties) (Unknown Source)
at java.sql.DriverManager.getConnection(java.lang.String, java.util.Properties) (/usr/lib/libgcj.so.5.0.0)
at java.sql.DriverManager.getConnection(java.lang.String) (/usr/lib/libgcj.so.5.0.0)
at TestMysql.main(java.lang.String[]) (Unknown Source)
** END NESTED EXCEPTION **
at com.mysql.jdbc.Connection.execSQL(com.mysql.jdbc.Statement, java.lang.String, int, com.mysql.jdbc.Buffer, int, int, boolean, java.lang.String, boolean, boolean) (Unknown Source)
at com.mysql.jdbc.Connection.configureClientCharacterSet() (Unknown Source)
at com.mysql.jdbc.Connection.initializePropsFromServer() (Unknown Source)
at com.mysql.jdbc.Connection.createNewIO(boolean) (Unknown Source)
at com.mysql.jdbc.Connection.Connection(java.lang.String, int, java.util.Properties, java.lang.String, java.lang.String) (Unknown Source)
at com.mysql.jdbc.NonRegisteringDriver.connect(java.lang.String, java.util.Properties) (Unknown Source)
at java.sql.DriverManager.getConnection(java.lang.String, java.util.Properties) (/usr/lib/libgcj.so.5.0.0)
at java.sql.DriverManager.getConnection(java.lang.String) (/usr/lib/libgcj.so.5.0.0)
at TestMysql.main(java.lang.String[]) (Unknown Source)
i have the database, hello.
The same code works well in Windows, But in Linux, the above exception.
By using the username root and password mysql , i can connect to mysql directly from the mysql prompt.
Pls help me..
I have already put the query 'access denied problem in Mysql' some day before. from the reply, i made some changes in user table(ie. set the password for [email protected].).After this change, this new Exception came..
The structure of my mysql.user table is
#     host                         user          password
1     localhost                    root          68d4f47c49a579c9
2     localhost.localdomain          root          68d4f47c49a579c9
3     localhost.localdomain
4     localhost
Pls help me.
Edited by: SUMESHBABU_R on Sep 30, 2007 11:36 PM

Well, at least the trace tells me that this issue is to be tracked back to the core of the MySQL JDBC driver and the Linux's implementation of JVM. It might be worth the effort to post this issue at their website/forum/issuetracker. It might also be worth the effort to tryout the newer MySQL JDBC driver 5.1, as it is written specific for JDK 6.0 (while MySQL JDBC driver 5.0 is targeted at JDK 5.0).

JSP - MySQL - MS Access

I have a set of tables in MS Access database and MySQL database.
My jsp application is running with the help of Apache/Tomcat in Linux box.
I've the MM.MySQL Driver to integrate MySQL with my application.
my problem is to know how to communicate jsp with MS Access here.
I don't know how to connect jsp to MS Access in Linux.
I searched for solution and finally got an idea of using MyODBC api.
I need to import data from MS Access to MySQL using MyODBC on Linux.
Can anyone help me on how to install,configure MyODBC and import data.
or please pass any reference url.
or
please suggest me any solution for this.
Thanks
Senthil

Thats what I meant. If both (Access and MySQL) both run on Windows there should be no problem. But if MySQL is on Linux and Access is on Windows it could be.
How about setting up Mysql on Windows, going the way magnoli supposed and after that using mysqldump to export zo linux.

Rep-1247 error when starting jsp file on linux

I have a rather frustrating problem on our production servers...
We are trying to start jsp files on a linux report server (10Gr2).
The command is displayed below
[2007/10/8 10:57:59:853] Info 50132 (EngineImpl:setCommandLine): Get command line: baseUrl=http://xxxxx:7777/reports/rwservlet/getfile/ userid=reporting@SHARED_BE USER_AGENT=Java/1.5.0_07 SERVER_NAME=xxxxxxxxx jobname="/opt/ogreports/catalog/SMC/BE-Shared/xxxx.jsp" destpath="/var/data/og/dashboard/van/sgs/001/reports/xx" getFilestr=/no> imagekey=reports9i par_end_date="01-10-2007" desname=xxxxxxxxxxx.pdf REMOTE_ADDR=127.0.0.1 SERVER_PROTOCOL=HTTP/1.1 authid=RWUser par_start_date="01-09-2007" destype=rcpfile REMOTE_HOST=127.0.0.1 SERVER_PORT=7777 CONTENT_TYPE=application/x-www-form-urlencoded report="/opt/ogreports/catalog/SMC/BE-Shared/xxx.jsp" expiredays=0 baseimageurl=http://xxxxx:7777/reports/rwservlet/getfile/HW/YX+JkD0HSAcVLzaSGilrWNAn36ufghgStsvQqfNFC7w== schedule="00:00 Oct 08, 2007" scphost="lion" desformat=pdf SCRIPT_NAME=/rwservlet par_id_project="1750"
The after paramform does some major data manipulations, writing to temporary tables (on commit preserve rows), that are used in queries from the reports.
This seems to go allright. The setup of all queries, program units etc passes as well. But when the report has to start formatting, I get a "1247 Program Unit not compiled" error message. This is an excerpt from the engine trace
[2007/10/8 11:40:40:243] Debug 50103 (EngineImpl:getCacheData): Start
[2007/10/8 11:40:40:243] Debug 50103 (EngineImpl:getCacheData): m_jobId = 9182
[2007/10/8 11:40:40:244] Debug 50103 (EngineImpl:getCacheData): Quit
[2007/10/8 11:40:40:534] Error 50103 (C Engine): 10:40:40 ERR REP-1247: Report contains uncompiled PL/SQL.
[2007/10/8 11:40:40:535] Error 50103 (rwfdt:rwfdtprint): 10:40:40 ERR Error occurred sending Job output to cache
[2007/10/8 11:40:40:536] Error 50103 (rwfdt:rwfdtfl_FreeDistList): running
[2007/10/8 11:40:40:536] Error 50103 (rwfdt:rwfdtfl_FreeDistList): quit
[2007/10/8 11:40:40:580] Debug 50103 (EngineImpl:run): CRunReport returns: 1247
[2007/10/8 11:40:40:608] Debug 50103 (EngineImpl:run): Quit
[2007/10/8 11:40:40:699] Exception 1247 (): Report contains uncompiled PL/SQL.
oracle.reports.RWException: IDL:oracle/reports/RWException:1.0
at oracle.reports.engine.EngineImpl.run(EngineImpl.java:447)
at oracle.reports.engine._EngineClassImplBase._invoke(_EngineClassImplBase.java:90)
at com.sun.corba.se.internal.corba.ServerDelegate.dispatch(ServerDelegate.java:353)
at com.sun.corba.se.internal.iiop.ORB.process(ORB.java:280)
at com.sun.corba.se.internal.iiop.RequestProcessor.process(RequestProcessor.java:81)
at com.sun.corba.se.internal.orbutil.ThreadPool$PooledThread.run(ThreadPool.java:106)
I know that 1247 normally covers up another error, but I don't seem to get it....
Funny thing is, when copying the jsp's to another reports server, they do run (on the same DB).
Message was edited by:
user599601

I have a rather frustrating problem on our production servers...
We are trying to start jsp files on a linux report server (10Gr2).
The command is displayed below
[2007/10/8 10:57:59:853] Info 50132 (EngineImpl:setCommandLine): Get command line: baseUrl=http://xxxxx:7777/reports/rwservlet/getfile/ userid=reporting@SHARED_BE USER_AGENT=Java/1.5.0_07 SERVER_NAME=xxxxxxxxx jobname="/opt/ogreports/catalog/SMC/BE-Shared/xxxx.jsp" destpath="/var/data/og/dashboard/van/sgs/001/reports/xx" getFilestr=/no> imagekey=reports9i par_end_date="01-10-2007" desname=xxxxxxxxxxx.pdf REMOTE_ADDR=127.0.0.1 SERVER_PROTOCOL=HTTP/1.1 authid=RWUser par_start_date="01-09-2007" destype=rcpfile REMOTE_HOST=127.0.0.1 SERVER_PORT=7777 CONTENT_TYPE=application/x-www-form-urlencoded report="/opt/ogreports/catalog/SMC/BE-Shared/xxx.jsp" expiredays=0 baseimageurl=http://xxxxx:7777/reports/rwservlet/getfile/HW/YX+JkD0HSAcVLzaSGilrWNAn36ufghgStsvQqfNFC7w== schedule="00:00 Oct 08, 2007" scphost="lion" desformat=pdf SCRIPT_NAME=/rwservlet par_id_project="1750"
The after paramform does some major data manipulations, writing to temporary tables (on commit preserve rows), that are used in queries from the reports.
This seems to go allright. The setup of all queries, program units etc passes as well. But when the report has to start formatting, I get a "1247 Program Unit not compiled" error message. This is an excerpt from the engine trace
[2007/10/8 11:40:40:243] Debug 50103 (EngineImpl:getCacheData): Start
[2007/10/8 11:40:40:243] Debug 50103 (EngineImpl:getCacheData): m_jobId = 9182
[2007/10/8 11:40:40:244] Debug 50103 (EngineImpl:getCacheData): Quit
[2007/10/8 11:40:40:534] Error 50103 (C Engine): 10:40:40 ERR REP-1247: Report contains uncompiled PL/SQL.
[2007/10/8 11:40:40:535] Error 50103 (rwfdt:rwfdtprint): 10:40:40 ERR Error occurred sending Job output to cache
[2007/10/8 11:40:40:536] Error 50103 (rwfdt:rwfdtfl_FreeDistList): running
[2007/10/8 11:40:40:536] Error 50103 (rwfdt:rwfdtfl_FreeDistList): quit
[2007/10/8 11:40:40:580] Debug 50103 (EngineImpl:run): CRunReport returns: 1247
[2007/10/8 11:40:40:608] Debug 50103 (EngineImpl:run): Quit
[2007/10/8 11:40:40:699] Exception 1247 (): Report contains uncompiled PL/SQL.
oracle.reports.RWException: IDL:oracle/reports/RWException:1.0
at oracle.reports.engine.EngineImpl.run(EngineImpl.java:447)
at oracle.reports.engine._EngineClassImplBase._invoke(_EngineClassImplBase.java:90)
at com.sun.corba.se.internal.corba.ServerDelegate.dispatch(ServerDelegate.java:353)
at com.sun.corba.se.internal.iiop.ORB.process(ORB.java:280)
at com.sun.corba.se.internal.iiop.RequestProcessor.process(RequestProcessor.java:81)
at com.sun.corba.se.internal.orbutil.ThreadPool$PooledThread.run(ThreadPool.java:106)
I know that 1247 normally covers up another error, but I don't seem to get it....
Funny thing is, when copying the jsp's to another reports server, they do run (on the same DB).
Message was edited by:
user599601

I have setup JSP & MySQL but how can i Connect it to eche other ?

I feel sory by asking this qustion but i tried very enough
100 mile start from 1 mile ^_^
I have tested JSP files by http://localhost:8080/test.jsp
and it works very will
also i have already installd MySQL and i can create databases and tables by http://localhost/phpMyAdmin
so what i have to do else to connect JSP to MySQL ? , ( if nothing )
how can i test that MySQL Connected with JSP, so that i can display data from database ?
Best Regards
JMalik

create a java bean, which is just similar to a java class and put the database connection there so you wouldn't have to include that code in all you jsps everytime you connect to the database
this is for DbConnection.java
package connection;
import java.sql.*;
import java.io.*;
public class DBConnection
     private Connection con;
     public DBConnection()
          try
              Class.forName("com.mysql.jdbc.Driver");
              con = DriverManager.getConnection("jdbc:mysql://localhost/yourfolder?user=yourusername&password=yourpassword");
        catch (Exception e)
             e.printStackTrace();
     public Connection getConnection()
          return con;
     public void close()
          try
               con.close();
          catch(Exception e)
               e.printStackTrace();
}in another bean/class which connects to your database,
say for example this is SelectUsers.java
public String[] selectActiveUsers(int id) throws Exception, SQLException
     try
               con = new DBConnection().getConnection();
               Statement stmt = con.createStatement();
               String ins = "<your select statement>";
                        stmt.executeUpdate(ins);
                        con.close();
               stmt.close();
         catch (SQLException se)
                System.out.println("SQL Exception: " + se.getMessage() + "not connected");
                se.printStackTrace(System.out);
     }and in your jsp, instantiate the class
users.jsp
SelectUsers su = new SelectUsers();
String[] users = su.selectActiveUsers(1);got it?
Message was edited by:
shuini

JSP & MySQL

Hi!
I am Pranay. I want to connect my JSP with MySQL. Will you please help me? I want the detail-code and pre-coding instructions.....
General Informations:
1. JDK 1.5.0
2. Apache Tomcat 4.1
3. MySQL Server 5.0
4. MySQL Connector/J 5.0.4
5. JAVA_CLASSPATH
C:\Program Files\Java\jdk1.5.0\bin
6. CLASSPATH
C:\Program Files\mysql-connector-java-5.0.4
Plz consider that I have a table in my MySQL database name tab1 which has fields: name,roll,date_of_birth.
Thanx...

The error you are getting looks like a network (socket) error rather than a JDBC or MySQL problem. The error indicates that a connection cannot be negotiated from Tomcat to MySQL. Are you sure MySQL is running on your laptop? Try to telnet to the MySQL port:
(on windows, from the command prompt)
C:\>telnet localhost 3306
If this connects (the command promt screen should clear) then the problem is elsewhere, but my bet is you won't be able to connect this way either.
If you cannot connect using telnet:
1. Verify that MySQL is running on your laptop
2. Verify that it's listening on port 3306
3. Check that you don't have any local firewall apps blocking this traffic
4. Verify that you don't have any manual host configurations which mean "localhost" points somewhere else (unlikely)
If you CAN connect using telnet:
1. Verify that your connection string is correct as per the MySQL JDBC Driver documentation
2. Verify that your authentication credentials are correct (don't think it's this)
Now... for a few supplimentary notes:
You appear to be using the connection.isClosed() method to test whether you have a connection. This serves no purpose in the context you are using it as it's just a boolean which gets set when close() is called on the connection. ergo you could quite easily have a broken connection which returns "false" on an isClosed() call.
Also, it is (strictly speaking) considered a better architecture to limit your JSP code to "display logic" only. This means it is usually void of any business logic or database-related code. You should really look at something like the MVC architecture (model-view-controller). This will save you a lot of headaches in the long run. If nothing else, debugging JSPs can be a real nightmare. I recommend you look at the Struts project (Apache Jakarta). It has become the defacto standard implementation of MVC.
Good luck :)

Problem: JSP, MySQL, UTF-8

Hello!
I use Netbeans 6.5, MySQL 5.0.67, Apache Tomcat 6.0.18, MySQL Connector J 5.1.6 to write simple web database application in JSP. Now I have problem with encoding of non-latin character strings returned from database.
Database was created by query:
CREATE DATABASE mydb DEFAULT CHARACTER SET = utf8Resource was defined in context.xml as follows:
    <Resource name="jdbc/ipdbDatasource"
        auth="Container"
        type="javax.sql.DataSource"
        driverClassName="com.mysql.jdbc.Driver"
        url="jdbc:mysql://localhost:3306/ipdb_10?autoReconnect=true&characterSetResults=UTF-8"
        username="root"
        password=""
        maxActive="100"
        maxIdle="30"
        maxWait="10000"/>Test page source is:
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<sql:query var="rooms" dataSource="jdbc/ipdbDatasource" >
    SELECT address, descr FROM room
</sql:query>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <h1>Тестовая страница</h1>
        <c:forEach var="room" items="${rooms.rows}">
            <p>${room.address}</p>
        </c:forEach>
    </body>
</html>Page header <h1> content is OK, but ${room.address} appears in wrong encoding. What can cause this problem?

I would suggest that you start by looking a jdbc only. JSP is not JDBC. XML is not JDBC.
Moreover the ONLY way to determine what is actually being extracted from the database in a text value is to print the characters as integers. If you attempt to display them using ANYTHING (System.out, swing, xml, file io) then they will be mapped. And mapped data is not the same as what you got from the database.

[b][u]JSP/mySQL CREATE DATABASE problem[/u][/b]

I am trying to create a mySQL DB through JSP program (query).
The Query :
stmt.executeUpdate("CREATE DATABASE employee;");
is not working. PLEASE HELP ME.................
The program is as follows.
try
Connection con =null;
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
con=DriverManager.getConnection("jdbc:mysql://localhost:3306/bedrock","Dude","");
System.out.println("Connection Established");
try {
System.out.println("Entered Try Block");
stmt=con.createStatement();
stmt.executeUpdate("CREATE DATABASE employee;");
System.out.println("Query Executed");
catch(Exception e){
System.out.println("Entered Catch Block");
System.out.println("Query Skipped");
catch (SQLException ex)
while (ex != null){
System.out.println("sql exception"+ex);
ex = ex.getNextException ();
Message was edited by:
sam_john

con=DriverManager.getConnection("jdbc:mysql://localhost:3306/bedrock","Dude","");
Access denied for user: '[email protected]' (Using password: NO)
You must provide a password for your connection.
Your code should have been as follows:
con=DriverManager.getConnection("jdbc:mysql://localhost:3306/bedrock","Dude","YOUR_PASSWORD_HERE");Anyway, to create a database or a table in a db server like MySQL, you must have the good privileges to.
Go to <MySQL_INSTALL_DIR>/Docs/ directory, you'll find there the MySQL manual.chm. Take a look at the the Tutorial section.
In order to know how to use jdbc Connector/J, take a look at the documentation shipped with: /mysql-connector-java-X.X.X/docs/connector-j.html
Here a typical code:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
public class TestMySQL {
     public static void main(String[] args) {
          Connection con = null;
          Statement stmt = null;
          try {
               Class.forName("org.gjt.mm.mysql.Driver").newInstance();
               con = DriverManager.getConnection("jdbc:mysql://localhost:3306/bedrock", "Dude", "YOUR_PASSWORD_HERE");////// put the right password here
               System.out.println("Connection Established");
               System.out.println("Entered Try Block");
               stmt = con.createStatement();
               stmt.executeUpdate("CREATE DATABASE employee");
               System.out.println("Query Executed");
          } catch (Exception e) {
               e.printStackTrace();
          } finally {
               if (stmt != null) {
                    try {
                         stmt.close();
                    } catch (Exception e) {
               if (con != null) {
                    try {
                         con.close();
                    } catch (Exception e) {
}Hope That Helps

JSP Mysql Connection Problem

Hi Friend,
I am facing some problem in connecting mysql with jsp .
When I try and connect to mysql with the following connection string
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/testdhiraj?user=root&password=dh");
Statement statement     = con.createStatement();
I get an error :
java.sql.SQLException: Communication link failure: Bad handshake
I don't know what is wrong,
as I had tested mysql using telnet and it connects and executes sql nicely.
Waiting for ur reply,
Dhiraj Agrawal
mail to : [email protected]

Hi,
You need to make sure that , you have given correct database name, user id and password in the connection url. and also check the jdbc driver is loaded properly. If your mysql is running in the standard port, you need not give the port as 3306.
Here is the example :
import java.sql.*;
     Notice, do not import org.gjt.mm.mysql.*
or you will have problems!
public class XampleClass
public static void main(String[] Args)
try {
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
catch (Exception e) {
System.err.println("exception while loading
driver.");
e.printStackTrace();
try {
Connection C = DriverManager.getConnection(
"jdbc:mysql://localhost/test?user=myuser&password=mypwddb");
// Do something with the Connection
catch (SQLException e) {
System.out.println("Exception: " + e);
This is the format for conenction url :
jdbc:mysql://[hostname][:port]/dbname[?param1=value1][&param2=value2]...
Hope this helps you.
Thanks,
Senthil_Slash

JSP mysql on linux

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