oracle jdbc driver OracleDriver ClassNotFoundException

Question

This is my code for which I am getting error  My classes12 jar has been imported as an external jar   import java io IOException  import java io PrintWriter  import java sql Connection  import java sql DriverManager  import java sql ResultSet  import java sql SQLException  import java sql Statement   import javax servlet ServletException  import javax servlet http HttpServlet  import javax servlet http HttpServletRequest  import javax servlet http HttpServletResponse   public class LoginAction extends HttpServlet   Connection conn  Statement stmt  ResultSet rs  String query    SELECT   FROM v urja login   protected void doPost HttpServletRequest request  HttpServletResponse response  throws ServletException  IOException       PrintWriter out   response getWriter        out println  Hello        String u name   request getParameter  uname        String u pass   request getParameter  upass        out println u name       out println u pass       try          Class forName  oracle jdbc driver OracleDriver            conn   DriverManager getConnection  jdbc oracle thin  localhost 1521 XE   urja   urja            stmt   conn createStatement            rs   stmt executeQuery query        catch SQLException sex           sex printStackTrace          catch  ClassNotFoundException cnf            cnf printStackTrace                Stacktrace   java lang ClassNotFoundException  oracle jdbc driver OracleDriver     at org apache catalina loader WebappClassLoader loadClass WebappClassLoader java 1714      at org apache catalina loader WebappClassLoader loadClass WebappClassLoader java 1559      at java lang ClassLoader loadClassInternal ClassLoader java 320     at java lang Class forName0 Native Method      at java lang Class forName Class java 169      at LoginAction doPost LoginAction java 27      at javax servlet http HttpServlet service HttpServlet java 647      at javax servlet http HttpServlet service HttpServlet java 728      at org apache catalina core ApplicationFilterChain internalDoFilter ApplicationFilterChain java 305      at org apache catalina core ApplicationFilterChain doFilter ApplicationFilterChain java 210      at org apache catalina core StandardWrapperValve invoke StandardWrapperValve java 222      at org apache catalina core StandardContextValve invoke StandardContextValve java 123      at org apache catalina authenticator AuthenticatorBase invoke AuthenticatorBase java 472      at org apache catalina core StandardHostValve invoke StandardHostValve java 171      at org apache catalina valves ErrorReportValve invoke ErrorReportValve java 99      at org apache catalina valves AccessLogValve invoke AccessLogValve java 931      at org apache catalina core StandardEngineValve invoke StandardEngineValve java 118      at org apache catalina connector CoyoteAdapter service CoyoteAdapter java 407      at org apache coyote http11 AbstractHttp11Processor process AbstractHttp11Processor java 1004      at org apache coyote AbstractProtocol AbstractConnectionHandler process AbstractProtocol java 589      at org apache tomcat util net JIoEndpoint SocketProcessor run JIoEndpoint java 310      at java util concurrent ThreadPoolExecutor Worker runTask ThreadPoolExecutor java 886      at java util concurrent ThreadPoolExecutor Worker run ThreadPoolExecutor java 908      at java lang Thread run Thread java 619

User · Answer

You can add a JAR which having above specified class exist e g ojdbc jar which supported by installed java version  also make sure that you have added it into classpath

User · Answer

In Eclipse   When you use JDBC in your servlet  the driver jar must be placed in the WEB-INF lib directory of your project

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1 Right click on your java project   2 Select  RUN AS    3 Select  RUN CONFIGURATIOS       4 Here select your server at left side of the page and then u would see  CLASS PATH  tab at riht side just click on it   5 Here clilck on  USER ENTRIES  and select  ADD EXTERNAL JARS    6 Select  ojdbc14 jar  file   7 Click on Apply   8 Click on Run   9 Finally Restart your server then it would be execute

User · Answer

Class forName  oracle jdbc driver OracleDriver      This line causes ClassNotFoundException  because you haven t placed ojdbc14 jar file in your lib folder of the project  or YOu haven t set the classpath of the required jar

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In Eclipse   rightclick on your application   Run As -  Run configurations -  select your server from type filter text box       Then in Classpath under Bootstrap Entries add your classes12 jar File and Click on Apply  Now  run the file       This worked for me

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Method 1  Download ojdbc jar  add ojdbc6 jar to deployment assembly  Right click on project- properties- select deployment assembly- click on  Add  - select  Archives from File System - browse to the folder where ojdbc6 jar is saved - add the jar- click finish- Apply OK   Method 2   if you want to add ojdbc jar to your maven dependencies you follow this link  http   www mkyong com maven how-to-add-oracle-jdbc-driver-in-your-maven-local-repository         Even if you re using a maven project it is not necessary to add ojdbc to maven dependencies method 2   method 1  adding directly to deployment assembly  works just fine

User · Answer

java lang ClassNotFoundException  oracle jdbc driver OracleDriver  Just add the ojdbc14 jar to your classpath   The following are the steps that are given below to add ojdbc14 jar in eclipse   1  Inside your project  2  Libraries  3  Right click on JRE System Library  4  Build Path  5  Select Configure Build Path  6  Click on Add external JARs     7  C  oraclexe app oracle product 10 2 0 server jdbc lib  8  Here you will get ojdbc14 jar  9  select here  10  open  11  ok  save and run the program you will get output

User · Answer

try to add ojdbc6 jar or other version through the server lib  C  apache-tomcat-7 0 47 lib    Then restart the server in eclipse

[java] oracle.jdbc.driver.OracleDriver ClassNotFoundException

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