如何传递Map< ObjectA,List< ObjectB>>.行动在Struts 2中 [英] How to pass a Map<ObjectA, List<ObjectB>> to action in Struts 2
问题描述
我有一个事件对象,里面有一个Map<ObjectA, List<ObjectB>>
,ObjectA
是标签,而list<ObjectB>
是表行.使用以下代码,我可以正确显示表,但是当我将表单提交给Action
类时,该映射在事件内部为null
.
I have a event object, inside there is a Map<ObjectA, List<ObjectB>>
, the ObjectA
is the label, and the list<ObjectB>
are table rows. With following code, I can display the tables correctly, but when I submit the form to Action
class, the map is null
inside the event.
<s:iterator value="event.planMap" var="map" >
<h4>Plan Type: <s:property value='key' /></h4>
<table id="plan">
<s:iterator value="value" status="stat" var="detail" >
<tr>
<td><input type="text" id="name" name="event.planMap['%{#map.key}'][%{#stat.index}].name" value="<s:property value='name'/>"/></td>
<td><input type="text" id="text" name="event.planMap['%{#map.key}'][%{#stat.index}].text" value="<s:property value='text'/>"/></td>
<td><input type="text" id="contact" name="event.planMap['%{#map.key}'][%{#stat.index}].contact" value="<s:property value='contact'/>"/></td>
</tr>
</s:iterator>
</table>
</s:iterator>
@Andrea&罗马,所以我修改了代码.显示表是正确的,但是出现错误,它进入了结果"输入.如果删除planMap
,则操作成功.所以至少我知道错误是planMap
.修改后的代码是:
@Andrea & Roman, So I modified the code. displaying the table is correct, but I got error and it went to Result input. If I remove the planMap
, the action goes to success. So at least I know the error are the planMap
. The modified code is:
public Event {
private Map<Object_A, Object_B> planMap;
public Map<Object_A, Object_B> getPlanMap {
return this.planMap;
}
public void setPlanMap(Map<Object_A, Object_B> planMap) {
this.planMap = planMap;
}
}
Object_B
定义:
the Object_B
definition:
public Object_B {
private List<Object_C> details;
public List<Object_C> getDetials() {
return this.details;
}
public void setDetails(List<Object_C> details) {
this.details = details;
}
}
JSP代码是:
<s:iterator value="event.planMap" status="mStat" >
<h4>Plan Type: <s:property value='key' /></h4>
<table id="plan">
<s:iterator value="value.details" status="stat">
<tr>
<td><input type="text" id="name" name="event.planMap['% {#mStat.index}'].details[%{#stat.index}].name" value="<s:property value='name'/>"/></td>
<td><input type="text" id="text" name="event.planMap['%{#mStat.index}'].details[%{#stat.index}].text" value="<s:property value='text'/>"/></td>
<td><input type="text" id="contact" name="event.planMap['%{#mStat.index}'].details[%{#stat.index}].contact" value="<s:property value='contact'/>"/></td>
</tr>
</s:iterator>
</table>
</s:iterator>
推荐答案
在进行以下更改后,它使其正常运行.
I made it work after the following change.
<s:iterator value="event.planMap" status="mStat" >
<h4>Plan Type: <s:property value='key' /></h4>
<table id="plan">
<s:iterator value="value.details" status="stat">
<tr>
<td><s:textfield id="name" name="event.planMap['%{key}'].details[%{#stat.index}].name" /></td>
<td><s:textfield id="text" name="event.planMap['%{key}'].details[%{#stat.index}].text" /></td>
<td><s:textfield id="contact" name="event.planMap['%{key}].details[%{#stat.index}].contact" /></td>
</tr>
</s:iterator>
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