JAX-RS的错误

Question

首先，请让我道歉我的英语不好。 因为我是日本人 我问，JAX-RS项目错误。 我导入了以下网站的示例： http : //www.opentone.co.jp/news/release/article04/article0403.html，但是无法执行该项目。

我认为“由于先前的错误，启动上下文失败：严重”是最重要的。 如何解决？

如果可能的话，上述站点请尝试导入以使该项目实际黯然失色。 您可以从附件中下载“添付のファイル”。页面底部附近。

结束了，谢谢。

这是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>Archetype Created Web Application</display-name>

      <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
      </listener>

      <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring/applicationContext.xml</param-value>
      </context-param>

      <servlet>
        <servlet-name>CXFServlet</servlet-name>
        <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
      </servlet>

      <servlet-mapping>
        <servlet-name>CXFServlet</servlet-name>
        <url-pattern>/*</url-pattern>
      </servlet-mapping>
        </web-app>

这是堆栈跟踪

9 23, 2014 5:18:07 午後 org.apache.catalina.core.StandardContext listenerStart
重大: クラス org.springframework.web.context.ContextLoaderListener のリスナインスタンスにコンテキスト初期化イベントを送信中の例外です
org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [jp.sample.jaxrs.service.HelloResource] for bean with name 'helloResource' defined in file [C:\Users\omiz12032\workspace3\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\jax-rs\WEB-INF\classes\jp\sample\jaxrs\service\HelloResource.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: jp/sample/jaxrs/service/HelloResource : Unsupported major.minor version 52.0 (unable to load class jp.sample.jaxrs.service.HelloResource)
    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1264)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:576)
    at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1330)
    at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:896)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:566)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
    at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:282)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:204)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4210)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4709)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:822)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
    at org.apache.catalina.core.StandardService.start(StandardService.java:525)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.UnsupportedClassVersionError: jp/sample/jaxrs/service/HelloResource : Unsupported major.minor version 52.0 (unable to load class jp.sample.jaxrs.service.HelloResource)
    at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2858)
    at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1159)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1647)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
    at org.springframework.util.ClassUtils.forName(ClassUtils.java:257)
    at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:408)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1282)
    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1253)
    ... 24 more

9 23, 2014 5:18:07 午後 org.apache.catalina.core.StandardContext start
重大: Error listenerStart
9 23, 2014 5:18:07 午後 org.apache.catalina.core.StandardContext start
重大: 以前のエラーのためにコンテキストの起動が失敗しました [/jax-rs]
9 23, 2014 5:18:07 午後 org.apache.catalina.core.ApplicationContext log
情報: Closing Spring root WebApplicationContext
9 23, 2014 5:18:07 午後 org.apache.coyote.http11.Http11Protocol start
情報: Coyote HTTP/1.1を http-8080 で起動します
9 23, 2014 5:18:07 午後 org.apache.jk.common.ChannelSocket init
情報: JK: ajp13 listening on /0.0.0.0:8009
9 23, 2014 5:18:07 午後 org.apache.jk.server.JkMain start
情報: Jk running ID=0 time=0/21  config=null
9 23, 2014 5:18:07 午後 org.apache.catalina.startup.Catalina start
情報: Server startup in 4681 ms

这是applicationContext.xml。用于注册Web服务的

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:jaxrs="http://cxf.apache.org/jaxrs"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
    http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd">

  <import resource="classpath:META-INF/cxf/cxf.xml" />

  <context:component-scan base-package="jp.sample.jaxrs" />

  <jaxrs:server id="jaxrsservice" address="/">
      <jaxrs:serviceBeans>
          <ref bean="helloResource" />
      </jaxrs:serviceBeans>
  </jaxrs:server>

  <jaxrs:server id="itemorderresource" address="/">
      <jaxrs:serviceBeans>
          <ref bean="itemOrderResource" />
      </jaxrs:serviceBeans>
  </jaxrs:server>

  <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="jdbc:mysql://localhost/jaxrs" />
    <property name="username" value="jaxrs" />
    <property name="password" value="jaxrs" />
  </bean>

  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="configLocation" value="classpath:mybatis-config.xml" />
    <property name="mapperLocations" value="classpath:mybatis/**/*.xml" />
  </bean>

  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource" />
  </bean>
</beans>

Answer 1

引起原因：java.lang.UnsupportedClassVersionError：jp / sample / jaxrs / service / HelloResource：不支持的major.minor版本52.0（无法加载类jp.sample.jaxrs.service.HelloResource）

基本上，这意味着您使用比服务器新的JDK编译类（可能在开发环境中为1.8，而在tomcat服务器中为1.7）。

尝试在开发环境中将Java编译器级别切换到较低版本。