4
我在Struts 2中探索註釋。我嘗試使用@RequiredFieldValidator
的簡單驗證沒有發生,表單提交空字段。我無法弄清楚,有人可以幫助我。Struts 2驗證使用註釋
我的JSP頁面:
<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
</head>
<body>
<h2>Struts 2 - Login Application</h2>
<s:actionerror />
<s:fielderror />
<s:form action="login" method="post" namespace="/" >
<s:textfield name="username" key="label.username" size="20" />
<s:password name="password" key="label.password" size="20" />
<s:submit />
</s:form>
</body>
</html>
我的動作類:
@Namespace("/")
@Results({
@Result(name="success", location="/Welcome.jsp"),
@Result(name="error", location="/Login.jsp")
})
public class LoginAction extends ActionSupport implements ValidationAware {
/**
*
*/
private static final long serialVersionUID = 5271055255991498361L;
private String username;
private String password;
public String execute() {
if (this.username.equals("admin")
&& this.password.equals("admin123")) {
return "success";
} else {
return "error";
}
}
@RequiredFieldValidator(message = "The name is required")
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
@RequiredFieldValidator(message = "The password is required")
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
它的工作原理,但爲什麼@RequiredFieldValidator不工作? – wolverine
@ user1448660它可以用來驗證其他非'String'類型的值。轉換後,它檢查'null'。請刷新頁面,因爲您可能看不到最後的更改。 –