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以下代碼顯示如何創(chuàng)建自定義驗(yàn)證消息。
下面的代碼來(lái)自UserBean.java。
package cn.w3cschool.common; import java.io.Serializable; import java.sql.Date; import javax.faces.bean.ManagedBean; import javax.faces.bean.SessionScoped; @ManagedBean(name="user") @SessionScoped public class UserBean implements Serializable{ String username; Date dob; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public Date getDob() { return dob; } public void setDob(Date dob) { this.dob = dob; } }
以下代碼來(lái)自demo.xhtml。
<?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> <h:form> <h:panelGrid columns="3"> Enter your username : <h:inputText id="username" value="#{user.username}" size="20" required="true" label="Username"> <f:validateLength minimum="5" maximum="10" /> </h:inputText> <h:message for="username" style="color:red" /> Enter your DOB : <h:inputText id="dob" value="#{user.dob}" size="20" required="true" label="Date of Birth"> <f:convertDateTime /> </h:inputText> <h:message for="dob" style="color:red" /> </h:panelGrid> <h:commandButton value="Submit" action="result" /> </h:form> </h:body> </html>
以下代碼來(lái)自MyMessage.properties。
javax.faces.converter.DateTimeConverter.DATE={2}: ""{0}"" could not be understood as a date. javax.faces.converter.DateTimeConverter.DATE_detail=Invalid date format. javax.faces.validator.LengthValidator.MINIMUM=Minimum length of ""{0}"" is required.
以下代碼來(lái)自result.xhtml。
?下載 Custom-Validation-Error-Message.zip
將生成的WAR文件從目標(biāo)文件夾復(fù)制到Tomcat部署文件夾,并運(yùn)行Tomcat-Install-folder/bin/startup.bat。
Tomcat完成啟動(dòng)后,在瀏覽器地址欄中鍵入以下URL。
http://localhost:8080/simple-webapp/demo.xhtml
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