I am trying to create a web service using axis2.
I have created it.
I am following the below steps for getting the wsdl info.
Right click Project -> Run on server -> Next.
No class found error is coming. Is any jar file is required.
Please guide me how to resolve this.
Error: java.lang.NoClassDefFoundError: org/apache/ws/commons/schema/utils/NamespaceMap at org.apache.axis2.deployment.util.Utils.fillAxisService(Utils.java:437) at org.apache.axis2.deployment.ServiceBuilder.populateService(ServiceBuilder.java:396) at org.apache.axis2.deployment.repository.util.ArchiveReader.buildServiceGroup(ArchiveReader.java:109) at org.apache.axis2.deployment.repository.util.ArchiveReader.processServiceGroup(ArchiveReader.java:232) at org.apache.axis2.deployment.ServiceDeployer.deploy(ServiceDeployer.java:154) at
You can download and include the XmlSchema jar in the lib folder of your dynamic web project /WebContent/WEB_INF folder.
But, this will only solve the problem temporarily. On creating WS client the XMLSchema jar will not get included. So check the compatibility of the version of your server with axis2 version (like Tomcat 6 created problem with axis2 1.7 but works fine with axis2 1.5.2).
On successful compatibility the XMLSchema jar will get included in the respective folder automatically.
You can correct your issue by referencing the XmlSchema jar in the lib folder. You can find the latest version of the jar file in the link below.
http://www.java2s.com/Code/Jar/x/DownloadXmlSchema142jar.htm
I'm creating a webApp in eclipse using tomcat & hibernate (for mysql). Ive unit tested by code and I am able to connect to the db and pull data, but I'm running into issues when trying it from the web app.
From the exception it looks like it isnt able to get to the hibernate.cfg.xml, but I've tried placing the file in the src folder, WEB-INF/lib & WEB-INF/classes but I still get the same error.
The line of code that it's failing on is:
Configuration configuration = new Configuration();
I would really really appreciate any help!
ClassPath References:
Project References:
Stacktrace:
java.lang.ExceptionInInitializerError
org.hibernate.cfg.Configuration.reset(Configuration.java:324)
org.hibernate.cfg.Configuration.<init>(Configuration.java:289)
org.hibernate.cfg.Configuration.<init>(Configuration.java:293)
root cause
java.lang.NullPointerException
org.hibernate.internal.util.ConfigHelper.getResourceAsStream(ConfigHelper.java:170)
org.hibernate.cfg.Environment.<clinit>(Environment.java:221)
org.hibernate.cfg.Configuration.reset(Configuration.java:324)
org.hibernate.cfg.Configuration.<init>(Configuration.java:289)
org.hibernate.cfg.Configuration.<init>(Configuration.java:293)
SOLUTION
Thanks to #Engineer, I was able to solve this by removing the jars from WEF-INF/lib & from the class path of the run configuration. Then I added them back using the "Deployment Assembly" menu in eclipse. I also have my project references here.
From Ranga Reddy:
Problem: Because of adding the jars in user library class path.
Solution: Instead of adding the jar files using User Library add the jars using classpath.
Trying to set up a new project, and running into a weird issue. I made a new app context file named backend-context.xml, I've added spring-context as a dependency, and am trying to add namespaces through the bean config file, but it's showing as 1 error, with no explaination.
If I browse into problem explorer, it states the following error:
'Unable to load schema mappings from location [META-INF/spring.schemas]'
If I browse through the Maven Dependencies I can see this file located under the spring-beans jar.
If anyone has ideas on how to fix this, that'd be awesome!
Thanks!
Ended up being caused by a local maven jar being corrupt. Found this out by uploading the code to github and trying on a different computer which worked like a charm. So, cleaned out my local repository from all spring jars and redownloaded.
I need to connect MySQL datasource to a jsp page through eclipse. I need to add, delete and read data from tables. I am using Eclipse Helios, Tomcat Apache 7 and Struts 2. I found some related page How should I connect to JDBC database / datasource in a servlet based application? but i dont know how to use public Database().What do i import. Also pls tell me some simple procedure to add and access data from tables.
You need to learn JDBC first - http://download.oracle.com/javase/tutorial/jdbc/index.html - and then you need to add the appropriate Java MySQL driver to your application so that the JDBC connection creation string can locate it.
Start with the tutorial.
Edit: A very good JDBC-based database exploration program is the DBVisualizer - http://www.dbvis.com/ - where the free version can help you getting started as well as help you investigate database contents and an easy SQL editor for getting the selects right.
You have to download mysql server and MySqlWonkbench for better UI. https://dev.mysql.com/downloads/workbench/
You have to add mysql.jar file to run mysql on your eclipse.
https://dev.mysql.com/downloads/connector/j/5.1.html
Add jar file to your eclipse project
Rightclick on your project --> properties --> java Build path --> add external jar --> select your mysql jar from your pc.
refer this video
https://www.youtube.com/watch?v=5vzCjvUwMXg
refer this code for login/signup fusing jsp + mysql
https://github.com/Aksh0369/log_sin_jsp-MySql
There is a VERY similar question to mine but in my case I don't have any duplicate jars in my build path, so the solution does not work for me. I've searched google for a couple of hours now, but none of the solutions I've found there actually resolve my issue. I'm creating a web site with some database connectivity for a homework. I'm using a MySQL database, developing in Eclipse and running on Windows.
I keep getting java.lang.ClassNotFoundException: com.mysql.jdbc.Driver with the following code:
import java.sql.*;
//...
public void someMethodInMyServlet(PrintWriter out)
{
Connection connection = null;
PreparedStatement query = null;
try {
out.println("Create the driver instance.<br>");
Class.forName("com.mysql.jdbc.Driver").newInstance();
out.println("Get the connection.<br>");
connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "secret");
query = connection.prepareStatement( "SELECT * FROM customers");
//...
} catch (Exception e)
{
out.println(e.toString()+"<br>");
}
}
//...
When I run the above code I get the following output:
Create the driver instance.
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
It doesn't get past the Class.forName... line and I can't figure out why! Here is what I did:
Download mysql-connector.
Put it in my MySQL folder C:\Program Files\MySQL\mysql-connector-java-5.1.12\mysql-connector-java-5.1.12-bin.jar.
Opened the project properties in Eclipse.
Add External Jar to my Build Path and I selected mysql-connector-java-5.1.12-bin.jar.
Every time I attempt to use the servlet I get the same error regardless if I have the jar in there or if I don't. Could you help me figure this out?
As for every "3rd-party" library in flavor of a JAR file which is to be used by the webapp, just copy/drop the physical JAR file in webapp's /WEB-INF/lib. It will then be available in webapp's default classpath. Also, Eclipse is smart enough to notice that. No need to hassle with buildpath. However, make sure to remove all unnecessary references you added before, else it might collide.
An alternative is to install it in the server itself by dropping the physical JAR file in server's own /lib folder. This is required when you're using server-provided JDBC connection pool data source which in turn needs the MySQL JDBC driver.
See also:
How to add JAR libraries to WAR project without facing java.lang.ClassNotFoundException? Classpath vs Build Path vs /WEB-INF/lib
How should I connect to JDBC database / datasource in a servlet based application?
Where do I have to place the JDBC driver for Tomcat's connection pool?
JDBC CLASSPATH Not Working
Since you are running it in servlet, you need to have the jar accessible by the servlet container. You either include the connector as part of your application war or put it as part of the servlet container's extended library and datasource management stuff, if it has one. The second part is totally depend on the container that you have.
The others are right about making the driver JAR available to your servlet container. My comment was meant to suggest that you verify from the command line whether the driver itself is intact.
Rather than an empty main(), try something like this, adapted from the included documentation:
public class LoadDriver {
public static void main(String[] args) throws Exception {
Class.forName("com.mysql.jdbc.Driver");
}
}
On my platform, I'd do this:
$ ls mysql-connector-java-5.1.12-bin.jar
mysql-connector-java-5.1.12-bin.jar
$ javac LoadDriver.java
$ java -cp mysql-connector-java-5.1.12-bin.jar:. LoadDriver
On your platform, you need to use ; as the path separator, as discussed here and here.
Place mysql-connector-java-5.1.6-bin.jar to the \Apache Tomcat 6.0.18\lib folder. Your problem will be solved.
What you should not do do (especially when working on a shared project)
Ok, after had the same issue and after reading some answers here and other places. it seems that putting external lib into WEB-INF/lib is not that good idea as it pollute webapp/JRE libs with server-specific libraries - for more information check this answer"
Another solution that i do NOT recommend is: to copy it into tomcat/lib folder. although this may work, it will be hard to manage dependency for a shared(git for example) project.
Good solution 1
Create vendor folder. put there all your external lib. then, map this folder as dependency to your project. in eclipse you need to
add your folder to the build path
Project Properties -> Java build path
Libraries -> add external lib or any other solution to add your files/folder
add your build path to deployment Assembly (reference)
Project Properties -> Deployment Assembly
Add -> Java Build Path Entries
You should now see the list of libraries on your build path that you can specify for inclusion into your finished WAR.
Select the ones you want and hit Finish.
Good solution 2
Use maven (or any alternative) to manage project dependency
Just follow these steps:
1) Install eclipse
2) Import Apache to eclipse
3) Install mysql
4) Download mysqlconnector/J
5) Unzip the zipped file navigate through it until you get the bin file in it. Then place all files that are present in the folder containing bin to C:\Program Files\mysql\mysql server5.1/
then give the same path as the address while defining the driver in eclipse.
That's all very easy guys.
If the problem still persists,
Put the-
mysql-connector-java-5.0.8-bin jar in a place inside your Tomcat->lib->folder (No matter where you've installed your Tomcat). And change your environmental variable (Done by clicking Properties of Mycomputer -Advanced system settings- Environmental variables-And set a new variable name & variable values as the place where your lib file resides.Dont forget to enter a ; at the end of the path)
If still problem persists
Try downloading commons-collections-2.0.jar (http://www.docjar.com/jar_detail/commons-collections-2.0.jar.html) and paste the jar in the same place where your mysql jar resides (ie) inside Tomcat-lib.
Clean your project-Stop your server- Finally try to run.
Many times I have been facing this problem, I have experienced ClassNotFoundException.
if jar is not at physical location.
So make sure .jar file(mysql connector) in the physical location of WEB-INF lib folder. and
make sure restarting Tomcat by using shutdown command in cmd.
it should work.
The only solution worked for me is putting the .jar file under WEB-INF/lib . Hope this will help.
assuming your project is maven based, add it to your POM:
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.26</version>
</dependency>
Save > Build > and test connection again. It works! Your actual mysql java connector version may vary.
Put mysql-connector-java-5.1.38-bin.jar to the C:\Program Files\Apache Software Foundation\Tomcat 7.0\lib folder.by doing this program with execute
My issue was a little different. Instead of jdbc:oracle:thin:#server:port/service i had it as server:port/service.
Missing was jdbc:oracle:thin:# in url attribute in GlobalNamingResources.Resource. But I overlooked tomcat exception's
java.sql.SQLException: Cannot create JDBC driver of class 'oracle.jdbc.driver.OracleDriver' for connect URL 'server:port/service'
for this error:
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
you need to:
Import java.sql.*;
Import com.mysql.jdbc.Driver;
even if its not used till app running.