问题描述
我正在使用Jersey 2.x
和tomcat 8
来开发我的第一个RESTful Api,但是当我尝试使用我的资源时,会不断出现404错误.
I'm working on my first RESTful Api with Jersey 2.x
and tomcat 8
but when I try to acceed to my Resources I keep getting a 404 errors.
这是我的 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">
<servlet>
<servlet-name>com.pj.api.application.Application</servlet-name>
</servlet>
<servlet-mapping>
<servlet-name>com.pj.api.application.Application</servlet-name>
<url-pattern>/api/*</url-pattern>
</servlet-mapping>
</web-app>
我的应用类:
@ApplicationPath ("api")
public class Application extends ResourceConfig {
public Application () {
packages ("com.pj.api.resources");
}
}
我的资源类:
@Path ("value=/users")
public class UserResources extends ResourcesImpl {
private UserDao user = new UserDao ();
@Override
public List<Data> getList () {
return user.getList ();
}
@GET
@Path ("value=/test")
public String Test () {
return "{'a':'hey'}";
}
@Override
public Data get (String id) {
return user.get (id);
}
@Override
public void post (Data data) {
user.post (data);
}
@Override
public void put (Data data) {
user.put (data);
}
@Override
public void delete(Data data) {
user.delete (data);
}
}
在Tomcat上部署项目并通过URL进入服务时:http://localhost:8080/PJ/api/users/test
它给我404错误和Cannot cast org.glassfish.jersey.servlet.init.JerseyServletContainerInitializer to javax.servlet.ServletContainerInitializer
When deploying the project on Tomcat, and acceeding to the Service through the URL : http://localhost:8080/PJ/api/users/test
it gives me a 404 error and Cannot cast org.glassfish.jersey.servlet.init.JerseyServletContainerInitializer to javax.servlet.ServletContainerInitializer
p.s :我不使用Maven
p.s : I do NOT use Maven
这里可能是什么问题?谢谢.
What could be the problem here ? Thank you.
推荐答案
这当然看起来像是类路径问题.您的服务器运行时是否包括一些默认的Jax-rs库?当尝试在包含jax-rs 1.1库的服务器上部署基于Jersey 2.4的应用程序时,我遇到了类似的问题,因此我不得不在Jersey 1.18上重建应用程序.在Eclipse中检查服务器运行时是否有任何现有库
This certainly looks like a classpath issue. Does your server runtime include some default Jax-rs libraries? I faced a similar issue when trying to deploy my app built on Jersey 2.4 on a server that included jax-rs 1.1 libraries, so I had to rebuild my app on Jersey 1.18. Check your server runtime in Eclipse for any existing libraries
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