javax.naming.NamingException：名称未绑定到上下文

Question

我的监听器代码如下

package org.javaimplant.newsfeed.Init;

import javax.naming.Context;

import javax.naming.InitialContext;

import javax.naming.NameClassPair;

import javax.naming.NamingEnumeration;

import javax.servlet.ServletContext;

import javax.servlet.ServletContextEvent;

import javax.servlet.ServletContextListener;

import javax.sql.DataSource;

import org.apache.log4j.Logger;

import org.javaimplant.newsfeed.Servlets.DataSourceServlet;

import org.javaimplant.newsfeed.data.DataAccessObject;

public class Init implements ServletContextListener {

    private Logger logger=Logger.getLogger(this.getClass());

    public void contextInitialized(ServletContextEvent sce) 

    {

        ServletContext servletContext = sce.getServletContext();

        try {

        contextInitialized2(servletContext);

        }

        catch (Exception e)

        {

        logger.error("Initialization failed.", e);

        throw new RuntimeException(e);

        }

        logger.debug("Initialization succeeded.");  

    }

    private void contextInitialized2(ServletContext servletContext)

    throws Exception 

    {

        InitialContext enc = new InitialContext();

        NamingEnumeration<NameClassPair> list = enc.list("java:comp/env/datasource");

        while (list.hasMore())

        {

          System.out.println(list.next().getName());

        }

        Context compContext = (Context) enc.lookup("java:comp/env");

        DataSource dataSource = (DataSource) compContext.lookup("datasource");

//      DataAccessObject.setDatasource(dataSource);

        DataSourceServlet.setDataSource(dataSource);

    }

    public void contextDestroyed(ServletContextEvent sce) {

        // TODO Auto-generated method stub

    }

}

运行代码时出现以下错误。我不知道为什么我的应用程序无法从 xml 文件中读取上下文。请帮忙

javax.naming.NamingException：名称未绑定到 org.javaimplant.newsfeed.Init.Init.contextInitialized(Init.java:29) 处的上下文

Answer 1

好的，所以 Eclipse 在工作区中维护自己独立的服务器配置，您必须在那里进行更改