帮忙看看这个空指针的问题

[安小菜]

错误提示：
严重: Servlet.service() for servlet action threw exception
java.lang.NullPointerException
at app.web.action.Easybuy_userAction.register(Easybuy_userAction.java:47)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
代码片段
public ActionForward register(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
Easybuy_userForm easybuy_userForm = (Easybuy_userForm) form;
第47行 easybuyUserService.registerUser(easybuy_userForm.getUser());
return mapping.findForward("result");
}
我采用的是spring加annoction的注入方式。检查了注入情况。都有注入啊。怎么会有空指针呢
easybuy_userForm采用的是struts来从页面拿东西。调了下 东西有拿过来呀。
麻烦大神们看看是哪里的问题 谢谢

[jumpheightway]

看看form正确否

[安小菜]

[Quote=引用 1 楼 的回复:]

看看form正确否
[/Quote]

form对着滴。debug了下 东西都有过来的

[chkaka]

easybuy_userForm 为null,
可以打印看一下。System.out.println(easybuy_userForm);

[安小菜]

[Quote=引用 3 楼 的回复:]

easybuy_userForm 为null,
可以打印看一下。System.out.println(easybuy_userForm);
[/Quote]


可以打印出来的

[安小菜]

<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
">
<context:annotation-config></context:annotation-config>
<context:component-scan base-package="app.dao,app.service,app.web.action"></context:component-scan>

<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName"
value="oracle.jdbc.driver.OracleDriver">
</property>
<property name="url"
value="jdbc:oracle:thin:@127.0.0.1:1521:orcl">
</property>
<property name="username" value="zhangbo"></property>
<property name="password" value="bobo"></property>
</bean>
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<tx:annotation-driven transaction-manager="txManager" />
</beans>



这个是我的配置

[良才2015]

easybuy_userForm的user是null；