Text的包导错了 不是:import com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider.Text; 而是:import org.apache.hadoop.io.Text;…

运行mapreduce遇到的错: Java.lang.ClassCastException: classcom.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$Text atjava.lang.Class.asSubclass(Unknown Source) atorg.apache.Hadoop.mapred.JobConf.getOutputKeyComparator(JobConf.java:774) atorg.ap…

报错信息详细: Error: java.io.IOException: Initialization of all the collectors failed. Error in last collector was:java.lang.ClassCastException: class com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$Text at org.apache.hadoop.mapred.MapTask.…

java.lang.ClassCastException: com.sun.proxy.$Proxy32 cannot be cast to com.bkc.bpmp.core.cache.MemcachedManager at com.bkc.bpmp.common.utils.CacheUtils.<clinit>(CacheUtils.java:11) at com.bkc.bpmp.modules.sys.controller.MainController.showCache(Main…

1 严重: Servlet /N002-1.0 threw load() exception 2 java.lang.ClassCastException: com.sun.proxy.$Proxy27 cannot be cast to com.bbk.n002.service.QuestionService 3 at com.bbk.n002.servlet.CreateTaskQueueServlet.init(CreateTaskQueueServlet.java:28) 4 at ja…

java.lang.ClassCastException: com.sun.proxy.$Proxy53 cannot be cast to cn.service.impl.WorkinggServiceImpl at cn.service.impl.WorkinggServiceImpl.getWorkinggService(WorkinggServiceImpl.java:64) at cn.servlet.WorkingServlet.doGet(WorkingServlet.java:3…

java.lang.ClassCastException: com.sun.proxy.$Proxy* cannot be cast to***问题解决方案 临床表现: 病例: 定义代理类: @Transactional @Repository public UserDaoImpl implements UserDao extends BaseDaoImpl{ /*没有实现任何接口*/ } 获取代理类: ApplicationContext ctx = new ClassPathXmlAppli…

代码如下: final Connection conn=pool.remove(0); //利用动态代理改造close方法 Connection proxy= (Connection) Proxy.newProxyInstance(conn.getClass().getClassLoader(), conn.getClass().getInterfaces(), new InvocationHandler() { @Override public Object invoke(Object pro…

异常: Exception in thread "main" java.lang.ClassCastException: com.sun.proxy.$Proxy2 cannot be cast to com.pro.service.impl.UserServiceImpl at com.pro.test.TestSpring.main(TestSpring.java:12) 一.抛异常的工程 定义Service层接口 package com.pro.service; /** * 用户…

这个异常是在开发Spring案例时遇到的. 贴一下完整异常信息: Exception in thread "main" java.lang.ClassCastException: com.sun.proxy.$Proxy4 cannot be cast to com.edu.aop.ArithmeticCalculatorImpl at com.edu.aop.Main.main(Main.java:11) 原因:Spring AOP是实现AOP的一种技术,是采用“动态代理技术”实现的…