java 部署基于 Jersey 的 Restful 服务项目中的 HTTPstatus 500
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HTTPstatus 500 in deploying Jersey based Restful service project
提问by Akina91
I have recently started with Jersey following thistutorial. I have configured the services/package name in web.xml alright, Now the thing is I am getting an javax.servlet.ServletException: Servlet.init() Exception with the following stack trace below:
我最近按照本教程开始使用 Jersey 。我已经在 web.xml 中配置了服务/包名称，现在问题是我得到了一个 javax.servlet.ServletException: Servlet.init() 异常，下面的堆栈跟踪如下：
exception
javax.servlet.ServletException: Servlet.init() for servlet Jersey REST Service threw exception
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
java.lang.Thread.run(Unknown Source)
root cause
com.sun.jersey.spi.inject.Errors$ErrorMessagesException
com.sun.jersey.spi.inject.Errors.processErrorMessages(Errors.java:170)
com.sun.jersey.spi.inject.Errors.postProcess(Errors.java:136)
com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:199)
com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:771)
com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:766)
com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:488)
com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:318)
com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:609)
com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:210)
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:373)
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:556)
javax.servlet.GenericServlet.init(GenericServlet.java:212)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
java.lang.Thread.run(Unknown Source)
Here is my Jes.java Class file:
这是我的 Jes.java 类文件：
package webb;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
@Path("/Jes")
public class Jes {
@GET
@Produces(MediaType.TEXT_PLAIN)
public String sayPlainTextHello() {
return "Hello Jersey";
}
@GET
@Produces(MediaType.TEXT_PLAIN)
public String sayXMLHello() {
return "<?xml version=\"1.0\"?>" + "<hello> Hello Jersey" + "</hello>";
}
// This method is called if HTML is request
@GET
@Produces(MediaType.TEXT_HTML)
public String sayHtmlHello() {
return "<html> " + "<title>" + "Hello Jersey" + "</title>"
+ "<body><h1>" + "Hello Jersey" + "</body></h1>" + "</html> ";
}
public static void main(String[] args) {
}
}
And web.xml
和 web.xml
<?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" id="WebApp_ID" version="2.5">
<display-name>webb</display-name>
<servlet>
<servlet-name>Jersey REST 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>webb</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Jersey REST Service</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
Here is my application setup:
这是我的应用程序设置：
Apache Tomcat 6.0
Jersey-core-1.8.jar
Jersey-bundle-1.8.jar
asm-3.1.jar
JRE7
Windows 64 bit
Apache Tomcat 6.0
Jersey-core-1.8.jar
Jersey-bundle-1.8.jar
asm-3.1.jar
JRE7
Windows 64 位
->I am not able to figure out what is causing this com.sun.jersey.spi.inject.Errors$ErrorMessagesException, answers related to similar problem are welcome.
->我无法弄清楚是什么导致了这个 com.sun.jersey.spi.inject.Errors$ErrorMessagesException，欢迎提供与类似问题相关的答案。
采纳答案by Ori Dar
Not sure it's your problem, every thing seems OK, but the following mapping appear twice:
不确定这是你的问题，一切似乎都很好，但以下映射出现了两次：
@GET
@Produces(MediaType.TEXT_PLAIN)
Your sayXMLHello()should be annotated with @Produces(MediaType.TEXT_XML)instead
你sayXMLHello()应该用@Produces(MediaType.TEXT_XML)而不是注释
