我正在尝试通过带有 Struts 2 操作的表单设置一个简单的 bean。我对这个框架很陌生，我看不出我错过了什么......
豆子FormBean：
public class FormBean {
private String login="";
private String password="";
public String getLogin() {
return login;
}
public void setLogin(String login) {
this.login = login;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
行动FormAction：
public class FormAction extends ActionSupport {
private FormBean form;
@Override
public String execute() throws Exception {
return SUCCESS;
}
public FormBean getForm() {
return form;
}
public void setForm(FormBean form) {
this.form = form;
}
}
表格index.jsp：
<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
</head>
<body>
<s:form action="login.action" method="post">
<s:textfield name="form.login" label="User" size="20" />
<s:password name="form.password" label="Password" size="20" />
<s:submit method="execute" value="Login" align="center" />
</s:form>
</body>
</html>
结果Welcome.jsp：
<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
</head>
<body>
<h2>Welcome <s:property value="form.login" /></h2>
<p><s:property value="form.password" /></p>
</body>
</html>
当我提交表单时，我的数据没有显示，我得到了这个例外：
Unexpected Exception caught setting 'login' on 'class tuto.form.FormAction: Error setting expression 'login' with value ['test', ]
Error setting expression 'login' with value ['test', ] - [unknown location]
at com.opensymphony.xwork2.ognl.OgnlValueStack.handleRuntimeException(OgnlValueStack.java:197)
[...]
Caused by: No object in the CompoundRoot has a publicly accessible property named 'login' (no setter could be found). - [unknown location]
at com.opensymphony.xwork2.ognl.accessor.CompoundRootAccessor.setProperty(CompoundRootAccessor.java:106)
[...]