java 如何将表单输入值传递给 Action (struts 1)
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How can I pass form input value to an Action (struts 1)
提问by Oscar MV
I'm new using struts.
我是使用 struts 的新手。
I need to pass the form value to an action when I submit the form. I want to use input tagno html:text.
当我提交表单时，我需要将表单值传递给一个操作。我想使用没有 html:text 的输入标签。
How to do it?
怎么做？
This is my code:
这是我的代码：
form in JSP:
JSP中的表格：
<form class="form-horizontal" action="address.do" method="post">
Name: <input type="text" class="form-control" name="name"><br>
City <input type="text" class="form-control" name="city"><br>
Country: <input type="text" class="form-control" name="country"><br>
<button class="btn btn-success" type="submit">Submit</button>
</form>
struts-config.xml:
struts-config.xml:
<form-beans>
<form-bean name="myFrom" type="com.form.MyForm"/>
</form-beans>
<global-forwards>
<forward name="pagAddress" path="/address.do"/>
</global-forwards>
<action-mappings>
<action path="/address"
type="com.action.MainAction"
name="myForm"
scope="request"
input="/addressInput.jsp"
validate="true">
<forward name="success" path="/addressInput.jsp"/>
</action>
</action-mappings>
ActionForm:
动作形式：
public class MyForm extends ActionForm{
private static final long serialVersionUID = -XXXXXXXXXXXXXXXXXXXX;
private String name = "";
private String city = "";
private String country = "";
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
@Override
public void reset(ActionMapping mapping, HttpServletRequest request) {
this.name = null;
this.city = null;
this.country = null;
super.reset(mapping, request);
}
}
Action:
行动：
public class MainAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
if(getErrors(request) == null ||getErrors(request).size() == 0)
return mapping.findForward("success");
else
return mapping.getInputForward();
}
}
采纳答案by Martin Carney
To access form values in a Struts 1 action, you need to cast ActionForm formto the type of form that the page uses, in your case MyForm. Then you can access its getters like normal. For example:
要在 Struts 1 操作中访问表单值，您需要转换ActionForm form为页面使用的表单类型，在您的情况下为MyForm. 然后你可以像往常一样访问它的吸气剂。例如：
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
MyForm theForm = (MyForm) form;
String name = theForm.getName();
if (name == null || "".equals(name)) {
// error case; name is required
// do something
}
if(getErrors(request) == null ||getErrors(request).size() == 0)
return mapping.findForward("success");
else
return mapping.getInputForward();
}
If the problem you're having is getting the values out of MyForminto the JSP page, and you truly cannot use taglibs*, then you canget the form like this:
如果您遇到的问题是越来越值出MyForm到JSP页面，你真的不能使用标签库*，那么你就可以得到这样的形式：
<%
MyForm theForm = (MyForm) session.getAttribute("MyForm");
%>
Then insert it into the page like this:
然后像这样插入到页面中：
<form class="form-horizontal" action="address.do" method="post">
Name: <input type="text" value="<%= theForm.getName() %>" class="form-control" name="name"><br>
City <input type="text" value="<%= theForm.getCity() %>" class="form-control" name="city"><br>
Country: <input type="text" value="<%= theForm.getCountry() %>" class="form-control" name="country"><br>
<button class="btn btn-success" type="submit">Submit</button>
</form>
BUTyou probably canuse taglibs and just don't know how to add css classes to them. In the taglibs, styleClassrenders to classin the output html. Try this:
但是您可能可以使用 taglibs，只是不知道如何向它们添加 css 类。在标签库中，在输出 html 中styleClass呈现class。试试这个：
<html:form styleClass="form-horizontal" action="address.do" method="post">
Name: <html:text styleClass="form-control" name="name" /><br>
City <html:text styleClass="form-control" name="city" /><br>
Country: <html:text styleClass="form-control" name="country" /><br>
<button class="btn btn-success" type="submit">Submit</button>
</html:form>
