JSP页面传值给action后出问题，求解答
先上代码：
页面部分：<s:iterator value="dingdans" status="dingdan">
<td class=forumrow height=24><s:property value="dingdanId" /></td>
<td class=forumrowhighlight height=24><s:property value="dingdanShijian"/></td>
<td class=forumrow height=24><s:property value="user.userName"/></td>
<td class=forumrowhighlight height=24><s:property value="user.dianhua"/></td>
<td class=forumrow height=24><s:property value="user.dizhi"/></td>
<td class=forumrowhighlight height=24><s:property value="zongjia"/>元 </td>
<td class=forumrow height=24><s:property value="zhuangtai"/></td>
<s:if test=" zhuangtai == '提交'">
<td class=forumrowhighlight height=24>
<%-- <s:a href='updateDingdan.action?dingdanId="<s:property value="dingdanId" />"'> 处理</s:a> --%>
<form action="updateDingdan.action">
<input type="hidden" name="dingdanId" value="<s:property value="dingdanId" />">
<input type="submit" value="处理">
</form>
</td>
</s:if>
action部分public String updateDingdan() throws Exception {
DingdanDAO dingdanDAO=new DingdanDAO();
if(dingdanDAO.updateDingdan(dingdanId)) {
return SUCCESS;
}else{
return INPUT;
}
}
dao部分public boolean updateDingdan(int dingdanId){
boolean flag=false;
DingdanDAO dingdanDAO=new DingdanDAO();
Dingdan dingdan=dingdanDAO.getDingdanById(dingdanId);
String sql="update dingdan set userId=?,zhuangtai=?,dingdanShijian=?,zongjia=? where dingdanId='"+dingdan.getDingdanId()+"'";
try{
Connection conn=DBConn.getConnection();
PreparedStatement pstmt=conn.prepareStatement(sql);
pstmt.setInt(1, dingdan.getUserId());
pstmt.setString(2, "已处理");
pstmt.setDate(3, new java.sql.Date(dingdan.getDingdanShijian().getTime()));
pstmt.setInt(4, dingdan.getZongjia());
if(pstmt.executeUpdate()>0){
flag=true;
}
pstmt.close();
conn.close();
}catch (Exception e){
e.printStackTrace();
}
return flag;
}
错误为
com.microsoft.sqlserver.jdbc.SQLServerException: 结果集没有当前行。
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:130)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.verifyResultSetHasCurrentRow(SQLServerResultSet.java:314)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.getterGetColumn(SQLServerResultSet.java:1785)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.getValue(SQLServerResultSet.java:1820)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.getValue(SQLServerResultSet.java:1805)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.getInt(SQLServerResultSet.java:2041)
at edu.niit.cn.dao.DingdanDAO.getDingdanById(DingdanDAO.java:77)
at edu.niit.cn.dao.DingdanDAO.updateDingdan(DingdanDAO.java:240)
at edu.niit.cn.action.DingdanAction.updateDingdan(DingdanAction.java:135)
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)
…………………………
java.lang.NullPointerException
at edu.niit.cn.dao.DingdanDAO.updateDingdan(DingdanDAO.java:248)
at edu.niit.cn.action.DingdanAction.updateDingdan(DingdanAction.java:135)
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 com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:453)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:292)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:255)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
……………………
[最优解释]
可以的话，代码发我qq28205968，我帮你看看
[其他解释]
<input type="hidden" name="dingdanId" value="<s:property value="dingdanId" />">
你这里面应该没值，改成value="%{dingdanId}"试试
[其他解释]
如果页面我用上面的注释部分，
<s:a href='updateDingdan.action?dingdanId="<s:property value="dingdanId" />"'> 处理</s:a>传递参数到action，会有
警告: Error setting expression 'dingdanId' with value '[Ljava.lang.String;@112610d'
ognl.MethodFailedException: Method "setDingdanId" failed for object edu.niit.cn.action.DingdanAction@fdfd91 [java.lang.NoSuchMethodException: edu.niit.cn.action.DingdanAction.setDingdanId([Ljava.lang.String;)]
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1292)
Caused by: java.lang.NoSuchMethodException: edu.niit.cn.action.DingdanAction.setDingdanId([Ljava.lang.String;)
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1233)
... 67 more
/-- Encapsulated exception ------------\
java.lang.NoSuchMethodException: edu.niit.cn.action.DingdanAction.setDingdanId([Ljava.lang.String;)
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1233)
at ognl.OgnlRuntime.setMethodValue(OgnlRuntime.java:1481)
等错误，求大神、大虾、大师们帮帮忙啊，急用的！
[其他解释]
空指针，debug跟一下，，貌似服务器也要重启
[其他解释]
大神不行啊，还是那样
[其他解释]
debug的结果为：
Object Property Name Property Value
edu.niit.cn.vo.Dingdan dingdanId 1
userId 0
zongjia 21
zhuangtai 提交
user edu.niit.cn.vo.User@7e9bed
dingdanShijian 2012-11-20
dingdanFs [edu.niit.cn.vo.DingdanF@2f0bd7, edu.niit.cn.vo.DingdanF@b25680, edu.niit.cn.vo.DingdanF@4d2125]
edu.niit.cn.action.DingdanAction texts null
errorMessages []
dingdanId 0
dingdanByUserId success
dingdanById success
locale zh_CN
actionMessages []
dingdans []
actionErrors []
errors {}
fieldErrors {}
session There is no read method for session
allDingdan success
container There is no read method for container
userId 0
request There is no read method for request
dingdan null
com.opensymphony.xwork2.DefaultTextProvider texts null
[其他解释]
对了，还有部分代码：
public Dingdan getDingdanById(int dingdanId) {
Dingdan dingdan = new Dingdan();
List dingdanFs =new ArrayList();
String sql = "select dingdan.dingdanId,dingdan.zhuangtai,dingdan.dingdanShijian,dingdan.zongjia," +
"[user].userId,[user].userName,[user].email,[user].dianhua,[user].dizhi"+
" from dingdan,[user]" +
"where dingdan.userId=[user].userId and dingdan.dingdanId=? ";
try {
Connection connection = DBConn.getConnection();
PreparedStatement pstmt = connection.prepareStatement(sql);
pstmt.setInt(1, dingdanId);
ResultSet rs = pstmt.executeQuery();
if(rs.next()){
User user=new User();
DingdanFDAO dingdanFDAO=new DingdanFDAO();
dingdan.setDingdanId(rs.getInt("dingdanId"));
dingdan.setZhuangtai(rs.getString("zhuangtai"));
dingdan.setDingdanShijian(rs.getDate("dingdanShijian"));
dingdan.setZongjia(rs.getInt("zongjia"));
dingdan.setDingdanFs(dingdanFDAO.getDingdanFById(rs.getInt(dingdanId)));
user.setUserId(rs.getInt("userId"));
user.setUserName(rs.getString("userName"));
user.setDianhua(rs.getString("dianhua"));
user.setEmail(rs.getString("email"));
user.setDizhi(rs.getString("dizhi"));
dingdan.setUser(user);
}
rs.close();
pstmt.close();
connection.close();
} catch (Exception e) {
e.printStackTrace();
}
return dingdan;
}
[其他解释]
dingdanId类型不统一，是int还是string
[其他解释]
我设置的是int类型，get/set方法都是int，会不会从页面传到action变为String类型了啊，那怎么解决啊
------其他解决方案--------------------
错误提示指向的是dingdan.setDingdanId(rs.getInt("dingdanId"));这一行
[其他解释]
Dingdan这个类里面的dingdanId是什么类型的？
[其他解释]
<s:a href='updateDingdan.action?dingdanId="<s:property value="dingdanId" />"'>
这句话里dingdanid是string类型的，改成下面试试
<s:a href='updateDingdan.action?dingdanId=<s:property value="dingdanId" />'>
[其他解释]
楼主请确定一下你的包含dingdan属性在这个类中的set,get方法是否没写错。仔细对照。报异常说没有这个方法。。也就是说页面dingdan的值想注值过去，但是报反射异常了。即检查dingdan是否为空的。如果它为空，后面的一些列错就可以理解了。
[其他解释]
我定义的是int类型的
[其他解释]
试了，不行，还是报错
警告: Error setting expression 'dingdanId' with value '[Ljava.lang.String;@d6be89'
ognl.MethodFailedException: Method "setDingdanId" failed for object edu.niit.cn.action.DingdanAction@ec2a72 [java.lang.NoSuchMethodException: edu.niit.cn.action.DingdanAction.setDingdanId([Ljava.lang.String;)]
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1292)
at ognl.OgnlRuntime.setMethodValue(OgnlRuntime.java:1481)
at ognl.ObjectPropertyAccessor.setPossibleProperty(ObjectPropertyAccessor.java:85)
at ognl.ObjectPropertyAccessor.setProperty(ObjectPropertyAccessor.java:162)
at com.opensymphony.xwork2.ognl.accessor.ObjectAccessor.setProperty(ObjectAccessor.java:27)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2318)
at com.opensymphony.xwork2.ognl.accessor.CompoundRootAccessor.setProperty(CompoundRootAccessor.java:77)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2318)
at ognl.ASTProperty.setValueBody(ASTProperty.java:127)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220)
at ognl.SimpleNode.setValue(SimpleNode.java:301)
at ognl.Ognl.setValue(Ognl.java:737)
[其他解释]
检查了，没写错，订单也不为空啊，信息也都显示在页面上啊，只是我通过上述方法将dingdanId传给action时就出错了
[其他解释]
怎么转啊，求指教啊
[其他解释]
<s:a href='updateDingdan.action?dingdanId="<s:property value="dingdanId" />"'> 处理</s:a>
这里dingdanId赋值后不是int型了，转成int类型再传给action
[其他解释]
问题就是怎么把dingdanId的值赋给新定义的变量啊，然后在把他传给action
[其他解释]
实在不行就定义一个int型的java变量把值赋给这个变量将这个值传给action
[其他解释]
这句放进去直接就提示有错
[其他解释]
试下
<td class=forumrowhighlight height=24>
<% int id=Integer.valueOf(<s:property value="dingdanId" />);
%>
<s:a href='updateDingdan.action?dingdanId=<%=id%>'> 处理</s:a>
</td>
行不行
[其他解释]
是少了if(rs.next()){ 这句的原因，但现在他报： 不支持从 datetime 到 INTEGER 的转换。的错
指向user.setUserId(rs.getInt("userId"));这一行，这有什么情况
[其他解释]
如果有空指针的时候，你看一下你的action里面是否对要接收的字段设置了getter()和setter()方法。
[其他解释]
问题终于解决了