Within SpringSource Tool Suite I created a standard google app engine project. I added Jersey for REST support. The development server starts up fine, but when I try to GET a URL (e.g. http://localhost:8888/sibibjersey/api) I'm simply getting a 404. I suppose this is a simple configuration issue, but the solutions seems to hide away from me....
Here the main files:
web.xml looks like this.
<?xml version="1.0" encoding="utf-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<init-param>
<param-name>com.sun.jersey.config.feature.DisableWADL</param-name>
<param-value>true</param-value>
</init-param>
<servlet>
<servlet-name>Jersey Web Application</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>com.sibib.main</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Jersey Web Application</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
I tried variations of the url-pattern like /* and /rest/*, but none seemed to work.
The only Java class in com.sibib.main is InfoResource.java:
package com.sibib.main;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
#Path("/api")
public class InfoResource {
#GET
public String info() {
return "Hello Jersey on Google App Engine";
}
}
I tried adding #Path to the info function, but no effect. When I start the server and navigate e.g. to http://localhost:8888/sibibjersey/api I'm simply getting a 404.
Loading http://localhost:8888 loads the index.html in the war folder.
These are the lib referenced in the project:
activation-1.1.1.jar
appengine-api-1.0-sdk-1.6.1.jar
appengine-api-labs-1.6.1.jar
appengine-jsr107cache-1.6.1.jar
asm-3.3.1.jar
datanucleus-appengine-1.0.10.final.jar
datanucleus-core-1.1.5.jar
datanucleus-jpa-1.1.5.jar
geronimo-jpa_3.0_spec-1.1.1.jar
geronimo-jta_1.1_spec-1.1.1.jar
google_sql.jar
jackson-core-asl-1.9.2.jar
jackson-jaxrs-1.9.2.jar
jackson-mapper-asl-1.9.2.jar
jaxb-api-2.2.4.jar
jaxb-impl-2.2.4-1.jar
jdo2-api-2.3-eb.jar
jersey-bundle-1.11.jar
jersey-client-1.11.jar
jersey-core-1.11.jar
jersey-json-1.11.jar
jersey-server-1.11.jar
jettison-1.1.jar
jsr107cache-1.1.jar
persistence-api-1.0.2.jar
stax-api-1.0-2.jar
Any hint is greatly appreciated!
Thanks!
Can you try removing sibibjersey from the context path, just try with http: //localhost:8888/api
In my local, I have not seen Google App Engine's application having project path along with http: //localhost:8888
I followed http://tugdualgrall.blogspot.com/2010/02/create-and-deploy-jax-rs-rest-service.html and it worked for me without any issues.
Related
When trying to configure jax rs in intellij I get this error:
java.lang.ClassNotFoundException: org.glassfish.jersey.servlet.ServletContainer
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1945)
My webconfig looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<servlet>
<servlet-name>Rest</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>com.umbrella.server.api</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Rest</servlet-name>
<url-pattern>/api/*</url-pattern>
</servlet-mapping>
</web-app>
I manually downloaded the entire jersey pack from the official jersey website. Which should contain all the dependencies.
The weird thing is that whenever I create a class that derives from the ServletContainer it doesn't give any errors.
I found the anwser with the help of Eugen Covaci.
In the Intellij project settings there is a tab called problems. When clicking solve on the problems listed there it started working again.
Another issue was that the jar files were located in web/WEB_INF/libs/api instead of the correct folder (web/WEB_INF/lib)
I am following a simple webservice tutorial and can't seem to interact with the Java code. I suspect my web.xml has an error but I'm not sure. There are no obvious errors and the index.jsp is server without any problems.
So, when I'm running it on the server, it opens index.jsp and I then try the following urls, but I'm getting 'HTTP 404 Errors'
http://localhost:8080/RestApi/ - works, shows html page
http://localhost:8080/RestApi/rest - http 404 error
http://localhost:8080/RestApi/rest/hello - http 404 error
http://localhost:8080/RestApi/rest/hello/somevalue - http 404 error
Here is what i have
Dynamic web project with jersey libs imported.
A note on this - I got an error for class not found and saw that I had to use Glassfish.org... instead of the com.sun one, don't know why, but there ya go.
My web.xml is as follows. No errors.
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>RestApi</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<display-name>Rest Web Services App by me</display-name>
<servlet>
<servlet-name>exampleServlet</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>com.rest.example</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>exampleServlet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
My java class is as follows. No errors.
package com.rest.example;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Response;
#Path("/hello")
public class HelloWorld {
#GET
#Path("/{param}")
public Response getMsg(#PathParam("param") String msg){
String output = "Welcome to the world of Rest : "+msg;
return Response.status(200).entity(output).build();
}
}
You are using the old Jersey 1.x property
com.sun.jersey.config.property.packages
For Jersey 2.x it should be
jersey.config.server.provider.packages
As a general rule, anything where you see com.sun.jersey is for Jersey 1.x and org.glassfish.jersey is for 2.x.
try:
http://localhost:8080/rest/RestApi/hello
check my case
the rule seems like this: /{url-pattern}/{project}/{path}
I run my case with jetty
another example
the above issue can occur due to following reasons :
First check the name of your application deployed in the webapps folder of the tomcat, whether it is matching your url or not that is giving 404.But in the above case, as it is showing the welcome page, then it is not the concern here.
Check the url pattern mention in the web.xml as it must be the same as in the url you are hitting.
<url-pattern>/rest/*</url-pattern>
Third thing to check is that the path defined in the rest class with #Path annotation.
Check the web.xml for following entries if you are using jersey jars 2.x as suggested above by #Paul Samsotha
<servlet>
<servlet-name>Jersey RESTful Application</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>com.pizzeria</param-value>
</init-param>
</servlet>
There may be a possibility to get this error when your server has been up without any errors but the context of your application hasn't. You can check it in the logs.For further information please refer this Link ---> 404 error due to SEVERE: Context [/example] startup failed due to previous errors
I tried a lot of differents configurations following some other posts, but anything worked. I'm trying to run this simple tutorial(http://www.vogella.com/tutorials/REST/article.html) but i'm still having the message: "The requested resource is not available". Anyone?
Running on Eclipse Kepler, Tomcat 7 and MAC OS 10.8.5.
I tried this configuration for the web.xml, but didn't work too (reference: Running Jersey project (Rest web service) to tomcat)
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>Hello</display-name>
<servlet>
<servlet-name>ServletAdaptor</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>ServletAdaptor</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
and those are the jars in the last try:
asm-3.3.1.jar
jersey-bundle-1.12.jar
jersey-server-1.12.jar
jersey-servlet-1.12.jar
jsr311-api-1.0.jar
tried the following urls:
http://localhost:8080/Hello/
http://localhost:8080/de.vogella.jersey.first/rest/hello
You mapped the rest request to the path <url-pattern>/rest/*</url-pattern> so your request should be something like http://localhost:8080/rest/Hello/
I wrote a very simple example using Jersey.
I downloaded the latest jar files from the jersey website into lib folder in WEB-INF.
My class and web.xml are below.
When I provide URL localhost:8080/SimpleJersey/rest/test I get 404 error (not found).
However when I use Maven, it works.
I use Eclipse Kepler, Glassfish 4 server and Java 7.
What am I doing wrong in the non-Maven version?
Thanks.
Class:
package com.simplejersey;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
#Path("/test")
public class MyResources
{
#GET
#Produces("text/plain")
public String getIt()
{
return "Hello there!";
}
}
Web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>SimpleJersey</display-name>
<servlet>
<servlet-name>jersey-servlet</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>com.simplejersey</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>jersey-servlet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
I found the solution in this post by Michal Gajdos: Jersey REST Web Service, Tomcat, Eclipse and 404's
The issue is (quoting from the abovementioned post):
Jersey 2.0 does not recognize init-param with name com.sun.jersey.config.property.packages (web.xml). Try to change it to jersey.config.server.provider.packages as described in ServerProperties.PROVIDER_PACKAGES (link)."
Be carefeul when you copy web.xml from websites that show older solutions or versions (like I did). Jersey is being updated too...
I am testing a very simple REST server with Jersey and Servlet 3.0 implementation on Tomcat 7.0. I have programmed a simple PoJo:
package toplevel;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
#Path("/pojo")
public class PoJo {
#GET
#Produces("text/plain")
public String hello() {
return "Hello, World";
}
}
I have put the following in the WEB-INF/web.xml file (running on Servlet 3.0):
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name>RestTest</display-name>
<servlet>
<servlet-name>toplevel.PoJo</servlet-name>
</servlet>
<servlet-mapping>
<servlet-name>toplevel.PoJo</servlet-name>
<url-pattern>/pojo</url-pattern>
</servlet-mapping>
</web-app>
When I deploy, I get a HTTP Status 500 response. This seems to me that the webserver is recognizing that something should be served from /pojo, but that the corresponding class PoJo is not found. The jersey specific jars (version 1.17) are in the WEB-INF/lib dir:
activation-1.1.1.jar jersey-client-1.17.jar junit-4.9.jar
asm-3.3.1.jar jersey-core-1.17.jar persistence-api-1.0.2.jar
jaxb-api-2.2.4.jar jersey-server-1.17.jar stax-api-1.0-2.jar
jaxb-impl-2.2.4-1.jar jsr311-api-1.1.1.jar
Does anyone recognize this ?
You need to tell Jersey where to find your REST resource. Your web.xml should look something like this:
<servlet>
<servlet-name>Service</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>toplevel</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Service</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
Adding jersey-servlet:1.17.jar took care of that problem for me.