[英]What is the correct request parameter for map proprerty inside an object in Struts Action?
Consider the following AnswerAction
:考虑以下
AnswerAction
:
public class AnswerAction extends CommonAction implements SessionAware {
private CaseNumbering caseNumbering;
(...)
}
And FormCaseNumbering
和
FormCaseNumbering
public class FormCaseNumbering implements CaseNumbering {
private Duplicable innermostElement;
Map<Duplicable, Integer> caseNumbersOfDuplicableFormElements = new HashMap<>();
(...)
}
and DuplicableFormElement
和
DuplicableFormElement
public class DuplicableFormElement implements Duplicable {
protected int id;
protected boolean duplicable;
}
In a Struts2 application where beans are injected via spring:在通过 spring 注入 bean 的 Struts2 应用程序中:
<bean id="caseNumbering" scope="prototype"
class="model.FormCaseNumbering">
<property name="innermostElement" ref="duplicableFormElement"></property>
</bean>
<bean id="answerAction" class="actions.AnswerAction" scope="prototype" autowire="byName">
<property name="caseNumbering" ref="caseNumbering"/>
</bean>
Question:题:
How can you send a request parameter that populates the action with a caseNumbering containing a Map element with key duplicableElement.id=6
and value Integer=1
?您如何发送请求参数,该参数使用 caseNumbering 填充操作,该 caseNumbering 包含键为 duplicableElement.id
duplicableElement.id=6
且值为Integer=1
的 Map 元素?
My attempts:我的尝试:
Since the caseNumbering
element is being injected via spring, I have no problem populating innermostElement
, eg this works:由于
caseNumbering
元素是通过 spring 注入的,我没有问题填充innermostElement
,例如这有效:
(MockHttpServletRequest)request.setParameter("caseNumbering.innermostElement.id","9");
However the following:但是以下内容:
(MockHttpServletRequest)request.setParameter("caseNumbering.caseNumbersOfDuplicableFormElements[6]","1");
will fail with:将失败:
Invalid field value for field "caseNumbering.caseNumbersOfDuplicableFormElements[6]".
字段“caseNumbering.caseNumbersOfDuplicableFormElements[6]”的字段值无效。
I have also tried adding an AnswerAction-conversion.properties with the following, with no luck:我还尝试使用以下内容添加 AnswerAction-conversion.properties ,但没有运气:
Key_caseNumbering.caseNumbersOfDuplicableFormElements=model.DuplicableFormElement
KeyProperty_caseNumbering.caseNumbersOfDuplicableFormElements=id
Element_caseNumbering.caseNumbersOfDuplicableFormElements=java.lang.Integer
CreateIfNull_caseNumbering.caseNumbersOfDuplicableFormElements=true
Is this possible in Struts2 (without needing to create a custom converter)?这在 Struts2 中是否可行(无需创建自定义转换器)?
This is a similar question: What is the correct request parameter for map proprerty inside an object in Struts Action?这是一个类似的问题: Struts Action 中对象内的映射属性的正确请求参数是什么?
And the answer, which can be found in struts2' mailing list , is still valid.并且可以在 struts2 的邮件列表中找到的答案仍然有效。
In short - there is a limitation in struts2 to handle this type of map and a custom converter is needed.简而言之 - 在 struts2 中处理这种类型的地图有一个限制,并且需要一个自定义转换器。
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