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jsf 表单验证

2016-02-16 14:04 471 查看

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
>
<h:body>

<h1>JSF 2 validateRequired example</h1>

<h:form>

<h:panelGrid columns="3">

Enter your password :

<h:inputSecret id="password" value="#{user.password}"
size="20" required="true" validator="#{user.validate}"
label="Password" />

<h:message for="password" style="color:red" />

Enter your password again :

<h:inputSecret id="confPassword" value="#{user.confPassword}"
size="20" required="true" validator="#{user.validate}"
label="Confirm Password">
<f:validateRequired />
</h:inputSecret>

<h:message for="confPassword" style="color:red" />

</h:panelGrid>

<h:commandButton value="Submit" action="result" />

</h:form>

</h:body>
</html>

import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.ValidatorException;

@ManagedBean(name = "user")
@SessionScoped
public class UserBean {
String password;
String confPassword;

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}

public String getConfPassword() {
return confPassword;
}

public void setConfPassword(String confPassword) {
this.confPassword = confPassword;
}

public void validate(FacesContext context, UIComponent component, Object obj)
throws ValidatorException {
String password = (String) obj;

if (password.length() < 6) {
FacesMessage message = new FacesMessage(
FacesMessage.SEVERITY_ERROR, "字符长度小于6", "字符长度不得小于6");
throw new ValidatorException(message);
}
if (!password.matches(".+[0-9]+")) {
FacesMessage message = new FacesMessage(
FacesMessage.SEVERITY_ERROR, "密码必须包括字符与数字", "密码必须是字符加数字所组成");
throw new ValidatorException(message);
}
}
}

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