jeecg3.6.5生成代码后的多选框出错，请指教问题在哪？
jeecg3.6.5使用online表单开发，设置了多选框，功能测试正常，可以显示该多选框。可是，使用生成的代码运行时，就会出错，
多选框<t:dictSelect field="signDepart" type="checkbox" dictTable="t_s_depart" dictField="departname" dictText="departname"hasLabel="false"title="签收部门"></t:dictSelect>
如果把上面的type="checkbox"，改成type="list"列表框，就不出错。
请指教问题在哪？
以下列出出错信息：
2016-08-18 14:22:08.667:WARN::/yunyongManage/zDispatchCommandController.do
java.lang.NullPointerException
at org.jeecgframework.tag.core.easyui.DictSelectTag.checkbox(DictSelectTag.java:274)
at org.jeecgframework.tag.core.easyui.DictSelectTag.end(DictSelectTag.java:117)
at org.jeecgframework.tag.core.easyui.DictSelectTag.doEndTag(DictSelectTag.java:85)
at org.apache.jsp.webpage.com.jeecg.zdispatchcommand.zDispatchCommand_002dadd_jsp._jspx_meth_t_dictSelect_1(org.apache.jsp.webpage.com.jeecg.zdispatchcommand.zDispatchCommand_002dadd_jsp:560)
at org.apache.jsp.webpage.com.jeecg.zdispatchcommand.zDispatchCommand_002dadd_jsp._jspService(org.apache.jsp.webpage.com.jeecg.zdispatchcommand.zDispatchCommand_002dadd_jsp:339)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:470)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:364)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:327)
at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:126)
at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:209)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:267)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1221)
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1005)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:952)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
at org.jeecgframework.core.aop.GZipFilter.doFilter(GZipFilter.java:90)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:140)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:150)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
问题补充：版本为jeecg3.6.5maven版
多选框<t:dictSelect field="signDepart" type="checkbox" dictTable="t_s_depart" dictField="departname" dictText="departname"hasLabel="false"title="签收部门"></t:dictSelect>
如果把上面的type="checkbox"，改成type="radio"，或type="select"，或type="list"时，都正常不出错。
只有type="checkbox"时出错。 已经自己解决。解决办法如下：
在DictSelectTag.java文件中checkbox(String name, String code, StringBuffer sb)方法定义的首行插入如下代码：
if(this.defaultVal==null){
this.defaultVal="";
} 已收录
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