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标签怎么传递参数啊？

huluhulu88 发布于 2007-08-20 15:37， 1254 次点击

<html:link action="/deleteQuestion.do?questionId=${queslist.questionId} && userId=${queslist.kmsUser.userId}">delete</html:link>

上面的代码为什么不对？急，在线等

为什么会报这样的异常：

HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: For input string: "3 "
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:545)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:486)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


root cause

java.lang.NumberFormatException: For input string: "3 "
java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
java.lang.Integer.parseInt(Integer.java:456)
java.lang.Integer.parseInt(Integer.java:497)
com.yourcompany.struts.action.DeleteQuestionAction.execute(DeleteQuestionAction.java:35)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


note The full stack trace of the root cause is available in the Apache Tomcat/5.5.20 logs.

[此贴子已经被作者于2007-8-20 17:48:34编辑过]

7 回复
#2
huluhulu882007-08-20 17:32

各位大侠们，都来帮帮忙吧，很急啊

会的：帮忙解决一下，万分感激

不会的：增加人气，让别人都进来帮忙，谢谢各位了。
#3
netstriker2007-08-21 09:40

root cause

java.lang.NumberFormatException: For input string: "3 "
java.lang.NumberFormatException.forInputString(NumberFormatException.java:48) //我觉得不是提交有问题,
java.lang.Integer.parseInt(Integer.java:456) //那个错误可能
java.lang.Integer.parseInt(Integer.java:497)
我觉得可能不是个那个link的问题,可能是提交给deleteQuestion.do的时候呀,questionId,userId这两个值你可能要转换
为int 类型,因为上面的错误提示说你的NumberFormatException有问题呀.在deleteQuestion.do里你对于数据操作是int 类型的,但是你提交的时候是一个string类型~,转换一下吧~
#4
huluhulu882007-08-21 10:14

话是这样说没错，我也知道是这个问题，关键是怎么支转换呢？
<html:link action="/deleteQuestion.do?questionId=${queslist.questionId} && userId=${queslist.kmsUser.userId}">delete</html:link>
怎么把红色的部分转换为字串符？程序中有一个ActionForm，有两个字段questionId和userId为什么还是不能转换？
真是晕死？
#5
huluhulu882007-08-21 11:04
问题解决了，
[CODE]<bean:define id="questionId" name="queslist" property="questionId"/>
<bean:define id="userId" name="queslist" property="kmsUser.userId"/>

<%

Map params = new HashMap();
params.put("questionId", questionId);
params.put("userId", userId);
pageContext.setAttribute("parameters", params);
%>[/CODE]
这样就OK了
#6
想你的天空2007-08-21 11:12
<html:link action="/deleteQuestion.do?questionId=<%=queslist.kmsUser.userId>& userId=<%=queslist.kmsUser.userId%>">delete</html:link>


推荐改为
<a href="项目名"+"/deleteQuestion.do?questionId=<%=queslist.kmsUser.userId>& userId=<%=queslist.kmsUser.userId%>">delete</a>
#7
stephen7222007-08-21 12:30
struts标签里怎么还套用${}标签阿？
#8
小轩子2007-08-22 19:08
恩。这个传递参数确实很容易搞混掉。
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