我是Java的新手，我一直试图在Tomcat 8.0上使用Jersey 2.23创建一个Rest服务。
我已经阅读了许多其他相同的文章，并相应地进行了更改，但仍然遇到相同的错误。
网址：http://localhost:8080/RestCalculator/api/GetStarted
这是我的服务
package com.restcalculator;
import java.util.Date;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.io.InputStream;
@Path("/")
public class RestfulCalculator
{
@GET
@Produces(MediaType.TEXT_PLAIN)
@Path("/GetStarted")
public Response GetStarted()
{
String output = "RestfulCalculator Service is Running. Ping @" + new Date().toString();
return Response.status(200).entity(output).build();
}
}
我的POM.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>RestCalculator</groupId>
<artifactId>RestCalculator</artifactId>
<version>0.0.1</version>
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>asm</groupId>
<artifactId>asm-all</artifactId>
<version>3.3.1</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-bundle</artifactId>
<version>1.14</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20090211</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
</project>
和我的web.xml
<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>RestCalculator</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>Jersey Rest Calculator Service</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.restcalculator</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Rest Calculator</servlet-name>
<url-pattern>/api/*</url-pattern>
</servlet-mapping>
</web-app>
我已经按照Jersey 2.23更新了servlet类名称。请告诉我我做错了什么。
编辑2：
固定的servlet名称，Tomcat服务器正在运行，并且index.html正在加载。
我现在收到此错误。似乎更相关，bt我无法理解问题。
Sep 09, 2016 5:01:08 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.
Sep 09, 2016 5:01:08 PM org.apache.catalina.core.ApplicationContext log
INFO: Marking servlet Jersey Rest Calculator Service as unavailable
Sep 09, 2016 5:01:08 PM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet [Jersey Rest Calculator Service] in web application [/RestCalculator] threw load() exception
java.lang.ClassNotFoundException: org.glassfish.jersey.servlet.ServletContainer
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1333)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1167)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:518)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:499)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:118)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1091)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1027)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5038)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5348)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1407)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1397)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
这是我的第一个项目，但我还无法运行任何东西。请帮忙。
最佳答案
该网址应为
网址：http://localhost:8080/GetStarted
，如果您想访问GetStarted（）方法。
除此之外，您还需要对代码进行如下调整：
package com.restcalculator;
import java.util.Date;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.io.InputStream;
@Path("/RestCalculator/api")
public class RestfulCalculator
{
...
}
这样您就可以使用相同的网址：
网址：
http://localhost:8080/RestCalculator/api/GetStarted