我最近在用Maven做一个Javaweb项目，但是今天碰到了一个问题，我复制了报错信息百度搜索，上csdn,stackoverflow,等网站都没有找到解决的方法，我感觉是数据库的问题，但是我尝试过用JDBC来操作数据库，可以正常连接。
数据库账号密码我确认过没有错误，我是跟着视频学的，刚刚接触java不久，希望能够得到大神的帮助，感激不尽
全部报错信息如下：
java.lang.NullPointerException
at java.util.Properties$LineReader.readLine(Properties.java:434)
at java.util.Properties.load0(Properties.java:353)
at java.util.Properties.load(Properties.java:341)
at cn.itcast.travel.util.JDBCUtils.<clinit>(JDBCUtils.java:31)
at cn.itcast.travel.dao.impl.UserDaoImpl.<init>(UserDaoImpl.java:10)
at cn.itcast.travel.service.impl.UserServiceImpl.<init>(UserServiceImpl.java:9)
at cn.itcast.travel.web.servlet.RegistUserServlet.doPost(RegistUserServlet.java:35)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
六月 21, 2019 10:40:52 下午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [cn.itcast.travel.web.servlet.RegistUserServlet] in context with path [/travel] threw exception
java.lang.IllegalArgumentException: Property 'dataSource' is required
at org.springframework.jdbc.support.JdbcAccessor.afterPropertiesSet(JdbcAccessor.java:135)
at org.springframework.jdbc.core.JdbcTemplate.<init>(JdbcTemplate.java:169)
at cn.itcast.travel.dao.impl.UserDaoImpl.<init>(UserDaoImpl.java:10)
at cn.itcast.travel.service.impl.UserServiceImpl.<init>(UserServiceImpl.java:9)
at cn.itcast.travel.web.servlet.RegistUserServlet.doPost(RegistUserServlet.java:35)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
各位，我把项目上传到了百度云，里面的代码我都已经写好了，只要启动项目，在注册页面上填写注册信息，点击提交，控制台就会报错。数据库的代码就在项目的travel.sql文件中，
感兴趣有时间的可以帮忙看一下我代码究竟那里出错了，不感兴趣的可以忽略这段话，如果不是实在没有头绪，我也不会做伸手党，这已经是第二天了，今天在解决不了，就要跳过项目学框架了。谢谢各位啦
链接：https://pan.baidu.com/s/1KImj8iaxV9xy-cv5ri0LXg
提取码：fzwk
复制这段内容后打开百度网盘手机App，操作更方便哦
只有报错改不了，前一个是说空指针异常，你前后端联调看下从前端传回的数据是不是空的，后一个说你数据源没有，dataSource是不是没有搞
dataSource应该没有配置，需要有类似这样的applicationContext.xml（不了解原理的可以先网上查询下相关资源）配置加载jdbc链接，配置可能类似如下，
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
</bean>
value是从配置文件获取的值，可以写死值比如,value="${jdbc.driver}" 可以改成value="com.mysql.jdbc.Driver"，其他类似
bug都修复了，一个是配置文件没有读取到，找办法读取到配置文件就可以dataSource异常了，解决一个是我自己提交数据的时候，没有把日期写上，出现了数据库类型不匹配
你好，我也遇到了同样的问题，请问你解决了吗，求教，万分感谢