请各位高手帮忙了

Question

报告什么错误吗？到数据库insert就可以了呀

Answer 1

报的什么错？？
update回去就好了！

Answer 2

点保存后页面已经错了
<tr> <td>预约日期: <input type="text" name="date" size="25" value=" <%= appointment.getDate()%> "> </td> </tr>中value=" <%= appointment.getDate()%>的值好像也是错的""都不变色.并且这样写后就不能显示修改资料页面
不知道怎么回事呢

Answer 3

数据库中没有修改到啊
---------->APP0001
2008-5-15 12:20:43 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.jsp.alertappointment_jsp._jspService(org.apache.jsp.alertappointment_jsp:75)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)

Answer 4

java.lang.NullPointerException //空指针错误
String appointmentid=request.getParameter("appointmentid");
//这个判断一下是不是空吧

Answer 5

没有值
把<jsp:useBean id="alertappointment" class="javabean.ooojavabean" scope="page"/> 
改成
<jsp:useBean id="alertappointment" class="javabean.ooojavabean" scope="session"/> 

Answer 6

有值啊
System.out.println("---------->"+appointmentid); 这一句可以在控制台打出来
下面的就没有值了

Answer 7

Appointment appointment=alertappointment.getAppointmentInfo("appointmentid"); 
这句话是干什么的?是不是应该改成Appointment appointment=alertappointment.getAppointmentInfo(appointmentid); 你这个页面是只是显示内容的吧?
ModifyAppointment_do.jsp
要看这个页面,这个页面决定了是否能保存成功.

Answer 8

type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]将截断字符串或二进制数据。
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:848)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
org.apache.jsp.ModifyAppointment_005fdo_jsp._jspService(org.apache.jsp.ModifyAppointment_005fdo_jsp:89)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)还是不行啊
不知道怎么回事

Answer 9

发表于：2008-05-15 15:31:0410楼 得分:0 这句话是干什么的?是不是应该改成 Appointment appointment=alertappointment.getAppointmentInfo(appointmentid);  你这个页面是只是显示内容的吧? 
ModifyAppointment_do.jsp 
要看这个页面,这个页面决定了是否能保存成功. 就是这个意思 
这个 Appointment appointment=alertappointment.getAppointmentInfo("appointmentid");  是为了得到指定id的信息

Answer 10

 点保存后页面已经错了 
<tr>  <td>预约日期:  <input type="text" name="date" size="25" value="  <%= appointment.getDate()%> ">  </td>  </tr>中value="  <%= appointment.getDate()%>的值好像也是错的""都不变色.并且这样写后就不能显示修改资料页面 
不知道怎么回事呢

Answer 11

啊，不好意思发错了<input type="text" name="date" size="25" value="  <%= appointment.getDate()%> ">  没有结束标签所以不变色改<input type="text" name="date" size="25" value="  <%= appointment.getDate()%>" /> 别的看不出来哪还有错

Answer 12

好像不是哦
这怎么会有 <input type="text" name="date" size="25" value="   <%= appointment.getDate()%>" />  
/?

Answer 13

Appointment appointment=alertappointment.getAppointmentInfo("appointmentid"); 你要清楚哦,这里的值是"appointmentid",而不是你从前面传过来的appointmentid哦.表示查询id的为"appointmentid"信息,应该没有吧.而应该是传过来的参数信息了.String appointmentid=request.getParameter("appointmentid"); //取得参数
Appointment appointment=alertappointment.getAppointmentInfo(appointmentid); //把参数传进去.
将截断字符串或二进制数据。 这表示某个列的值过大了.