Question

您好我在通过单独的Validator实例验证html组件时出现问题。

永远不会调用验证！ SYSO从未写入控制台！

我已经尝试重新部署，更新项目，清理并重新启动，重新安装glassfish工具，重新安装glassfish，重新安装eclipse。

这是我的项目设置：

registration.xhtml：

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:f="http://xmlns.jcp.org/jsf/core"
    xmlns:h="http://xmlns.jcp.org/jsf/html"
    xmlns:c="http://java.sun.com/jsp/jstl/core"
    xmlns:p="http://xmlns.jcp.org/jsf/passthrough"
    xmlns:jsf="http://xmlns.jcp.org/jsf">
<h:head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
    <title>Registration</title>
    <h:outputStylesheet library="css" name="stylesheet.css" target="head" />
    <h:outputScript library="js" name="jquery-3.1.1.min.js" target="head" />
    <h:outputScript library="js" name="jquery-ui-1.12.1.min.js"
        target="head" />
</h:head>
<h:body>
        <h:form prependId="false">              
        <h:inputSecret id="password" binding="#{localPasswordComponent}"  p:placeholder="Password"
                value="#{registrationBean.password}" required="true"
                requiredMessage="Please enter password"
                validatorMessage="Please enter at least 8 characters">
                <f:validateLength minimum="8" />
            </h:inputSecret>
            <h:message for="password" style="color:red" tooltip="true" showSummary="true" showDetail="true"/>
            <br />

            <h:inputSecret id="confirmPassword" p:placeholder="Confirm Password"
                required="#{not empty localPasswordComponent.value}"
                requiredMessage="Please confirm password"
                validatorMessage="Passwords are not equal">
                <f:validator validatorId="equalsValidator" />
                <f:attribute name="equalsValue" value="#{localPasswordComponent.value}" />
            </h:inputSecret>
            <h:message for="confirmPassword" tooltip="true" showSummary="true" showDetail="true"/>
            <br />
            <input jsf:id="submit" name="submit" value="Register" type="submit">
                <f:ajax render="@all" listener="#{registrationBean.register}" />
            </input>
        <br />
        </h:form>
    </h:body>
</html>

EqualsValidator.java：

package de.somepackage.validator;

import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.FacesValidator;
import javax.faces.validator.Validator;
import javax.faces.validator.ValidatorException;

@FacesValidator(value="equalsValidator")
public class EqualsValidator implements Validator {

    @Override
    public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
        System.out.println("Wow this is called!!!!!!!!!!!!!");
        Object otherValue = component.getAttributes().get("equalsValue");

        if (value == null || otherValue == null) {
            return; // Let required="true" handle.
        }

        if (!value.equals(otherValue)) {
            FacesMessage msg =
                    new FacesMessage("Values are not equal.");
            msg.setSeverity(FacesMessage.SEVERITY_ERROR);
            throw new ValidatorException(msg);
        }
    }

}

面-config.xml中：

<?xml version='1.0' encoding='UTF-8'?>

<faces-config version="2.1"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_1.xsd">

</faces-config>

的web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://xmlns.jcp.org/xml/ns/javaee"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
    id="PeeDeeWebFrontend" version="3.1">
    <display-name>PeeDee</display-name>
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>${webapp.projectStage}</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.PARTIAL_STATE_SAVING</param-name>
        <param-value>${webapp.partialStateSaving}</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
        <param-value>${webapp.stateSavingMethod}</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.VALIDATE_EMPTY_FIELDS</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL</param-name>
        <param-value>true</param-value>
    </context-param>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>/web/*</url-pattern>
    </servlet-mapping>
    <welcome-file-list>
        <welcome-file>web/index.xhtml</welcome-file>
    </welcome-file-list>
</web-app>

的glassfish-web.xml中：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glassfish-web-app PUBLIC "-//GlassFish.org//DTD GlassFish Application Server 3.1 Servlet 3.0//EN" "http://glassfish.org/dtds/glassfish-web-app_3_0-1.dtd">
<glassfish-web-app>
    <context-root>/PeeDeeWebFrontend</context-root>
    <class-loader delegate="true"/>
      <jsp-config>
        <property name="keepgenerated" value="true"></property>
      </jsp-config> 
</glassfish-web-app>

版本：

GlassFish Server开源版4.1.1（版本1）
Eclipse Jee Neon.1版本（4.6.1）构建ID：20160913-0900
JSF 2.2.14 2016年11月15日发布（最初为2.1）
JAVA_VERSION =＆＃34; 1.8.0_102＆＃34; OS_NAME =＆＃34;视窗＆＃34; OS_VERSION =＆＃34; 5.2＆＃34; OS_ARCH =＆＃34; AMD64＆＃34;
Maven 3（我想）
http://www.oracle.com/technetwork/java/javaee/downloads/index.html

我使用Java EE 7u2安装来配置我的项目。

由于我对这个JSF，Glassfish，JSP和其他Web开发内容完全不熟悉，我没有任何线索，为什么这不起作用，因为有几个例子表明它是这样的。有人可以给我一个答案或任何想法，为什么这不起作用？

注意：我使用Glassfish工具在Eclipse中运行服务器

Answer 1

我自己找到了答案，以下代码发生了不抛出运行时错误，只是编译器警告：

<input jsf:id="submit" name="submit" value="Register" type="submit">
    <f:ajax render="@all" listener="#{registrationBean.register}" />
</input>

将其更改为：

<h:commandButton value="Submit" action="#{registrationBean.register()}" />

这解决了我的问题，找到并调用了EqualsValidator！

Answer 2

在＆＃34;流程验证＆＃34;阶段分别应用Renders和Validators。

有一些隐含的渲染：

javax.faces.Boolean
javax.faces.Byte
javax.faces.Character
javax.faces.Short
javax.faces.Integer
javax.faces.Long
javax.faces.Float
javax.faces.Double
javax.faces.BigDecimal
javax.faces.BigInteger

这意味着它们会自动应用于字段。所以如果你有一个bean属性＆＃34; int＆＃34;和一个绑定此属性的值输入，并在其上添加一个字母，并提交该值，隐式javax.faces.Integer会自动应用并抛出异常。在这一刻，如果你在该输入上有一个验证器，那么它将永远不会被调用。

例：

<form jsf:id="id_form">
   <input jsf:id="id_input" type="text" value="#{bean.intValue}">
      <f:validator validatorId="someValidator"/>
   </input>
   <input jsf:id=id_submit type="submit" jsf:action="#{bean.someAction}"/>
</form>

FacesValidator无效

2 个答案: