爲什麼404在一個簡單的JAX-RS servlet中？

現在我已經把頭撞在牆上了。我只是試圖獲得一個簡單的示例JAX-RS servlet的工作。我正在使用Eclipse（火星）。我可以將它構建並表面部署在Tomcat上（Tomcat愉快地開始），但是我得到了一個我期望得到響應的404。爲什麼404在一個簡單的JAX-RS servlet中？

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"> 
    <display-name>radio16-webservice</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> 
    <servlet> 
    <servlet-name>Testme</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.testme</param-value> 
     </init-param> 
    <load-on-startup>1</load-on-startup> 
    </servlet> 
    <servlet-mapping> 
    <servlet-name>TestMe</servlet-name> 
    <url-pattern>/*</url-pattern> 
    </servlet-mapping> 
</web-app>

Testme.java：

package com.testme; 

//import javax.ws.rs.Consumes; 
import javax.ws.rs.GET; 
//import javax.ws.rs.PUT; 
import javax.ws.rs.Path; 
import javax.ws.rs.Produces; 
import javax.ws.rs.core.Context; 
import javax.ws.rs.core.UriInfo; 

@Path("testRoot") 
public class Tester { 
    @Context 
    private UriInfo context; 

    public Tester() {} 

    @GET 
    @Path("testme") 
    @Produces("text/html") 
    public String TestMe() { 
     return "<html lang=\"en\"><body><h1>Hello, World!!</h1></body></html>"; 
    } 
}

這裏是Tomcat的輸出：

May 02, 2016 3:22:52 PM org.apache.tomcat.util.digester.SetPropertiesRule begin 
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:radio16-webservice' did not find a matching property. 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: Server version:  Apache Tomcat/8.0.33 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: Server built:   Mar 18 2016 20:31:49 UTC 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: Server number:   8.0.33.0 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: OS Name:    Linux 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: OS Version:   3.19.0-30-generic 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: Architecture:   amd64 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: Java Home:    /opt/jdk/jdk1.8.0_65/jre 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: JVM Version:   1.8.0_65-b17 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: JVM Vendor:   Oracle Corporation 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: CATALINA_BASE:   /fast/git/testme/.metadata/.plugins/org.eclipse.wst.server.core/tmp0 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: CATALINA_HOME:   /fast/apache-tomcat-8.0.33 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: Command line argument: -Dcatalina.base=/fast/git/testme/.metadata/.plugins/org.eclipse.wst.server.core/tmp0 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: Command line argument: -Dcatalina.home=/fast/apache-tomcat-8.0.33 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: Command line argument: -Dwtp.deploy=/fast/git/testme/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: Command line argument: -Djava.endorsed.dirs=/fast/apache-tomcat-8.0.33/endorsed 
May 02, 2016 3:22:52 PM org.apache.catalina.startup.VersionLoggerListener log 
INFO: Command line argument: -Dfile.encoding=UTF-8 
May 02, 2016 3:22:52 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent 
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib 
May 02, 2016 3:22:53 PM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["http-nio-8080"] 
May 02, 2016 3:22:53 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector 
INFO: Using a shared selector for servlet write/read 
May 02, 2016 3:22:53 PM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["ajp-nio-8009"] 
May 02, 2016 3:22:53 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector 
INFO: Using a shared selector for servlet write/read 
May 02, 2016 3:22:53 PM org.apache.catalina.startup.Catalina load 
INFO: Initialization processed in 1778 ms 
May 02, 2016 3:22:53 PM org.apache.catalina.core.StandardService startInternal 
INFO: Starting service Catalina 
May 02, 2016 3:22:53 PM org.apache.catalina.core.StandardEngine startInternal 
INFO: Starting Servlet Engine: Apache Tomcat/8.0.33 
May 02, 2016 3:22:55 PM org.apache.jasper.servlet.TldScanner scanJars 
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. 
May 02, 2016 3:22:56 PM org.apache.coyote.AbstractProtocol start 
INFO: Starting ProtocolHandler ["http-nio-8080"] 
May 02, 2016 3:22:56 PM org.apache.coyote.AbstractProtocol start 
INFO: Starting ProtocolHandler ["ajp-nio-8009"] 
May 02, 2016 3:22:56 PM org.apache.catalina.startup.Catalina start 
INFO: Server startup in 3358 ms

要http://localhost/testRoot/testme/導致404如何解決？

來源

2016-05-02 rivenmyst137

你在javax.ws.rs.core.Application中註冊了你的資源類（Tester）嗎？ – suenda

FWIW，我從來沒有解決過這個問題。我懷疑這個問題是一個nitind突出的問題，也就是說它已經部署到了某個環境中，但我不知道這個環境是什麼。我基本上結束了tomcat的手動和手動部署內置的.war文件在我的eclipse項目（使用tomcat網絡管理界面）。 – rivenmyst137

Eclipse不會將您的Web應用程序部署爲Tomcat服務器的「ROOT」，除非您採取一些步驟來完成。嘗試http://localhost/radio16-webservice/testRoot/testme/。

來源

2016-05-03 02:07:29 nitind

爲什麼404在一個簡單的JAX-RS servlet中？

回答

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