FacesValidator 不工作
FacesValidator is not working
您好,我在通过单独的验证器实例验证 html 组件时遇到了问题。
永远不会调用验证! SYSO 永远不会写到控制台!
我已经尝试过重新部署、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);
}
}
}
人脸-config.xml:
<?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>
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>
glassfish-web.xml:
<?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(内部版本 1)
- Eclipse Jee Neon.1 版本 (4.6.1) 内部版本号:20160913-0900
- JSF 2.2.14 2016 年 11 月 15 日发布(最初是 2.1)
- JAVA_VERSION="1.8.0_102" OS_NAME="Windows" OS_VERSION="5.2"
OS_ARCH="amd64"
- Maven 3(我认为)
- Java 来自 http://www.oracle.com/technetwork/java/javaee/downloads/index.html
的 EE 7u2
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 开发东西完全陌生,所以我不知道为什么这不起作用,因为几个例子已经这样建议了。有人可以给我一个答案或任何想法为什么这不起作用吗?
注意:我是 运行 使用 Glassfish 工具的 Eclipse 服务器
当我自己找到答案时,下面的代码不会抛出运行时错误,只是一个编译器警告:
<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()}" />
这已经解决了我的问题,找到并调用了 EqualsValidator!
在 "Process Validations" 阶段分别应用 Renders 和 Validators。
有些渲染是隐式的:
- 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。因此,如果您有一个 bean 属性 "int" 和一个绑定此 属性 的值输入,并且您在其上放了一个字母,并提交了该值,则会自动应用隐式 javax.faces.Integer并抛出异常。此时此刻,如果您在该输入上有一个验证器,它永远不会被调用。
例如:
<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>
您好,我在通过单独的验证器实例验证 html 组件时遇到了问题。
永远不会调用验证! SYSO 永远不会写到控制台!
我已经尝试过重新部署、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);
}
}
}
人脸-config.xml:
<?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>
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>
glassfish-web.xml:
<?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(内部版本 1)
- Eclipse Jee Neon.1 版本 (4.6.1) 内部版本号:20160913-0900
- JSF 2.2.14 2016 年 11 月 15 日发布(最初是 2.1)
- JAVA_VERSION="1.8.0_102" OS_NAME="Windows" OS_VERSION="5.2" OS_ARCH="amd64"
- Maven 3(我认为)
- Java 来自 http://www.oracle.com/technetwork/java/javaee/downloads/index.html 的 EE 7u2
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 开发东西完全陌生,所以我不知道为什么这不起作用,因为几个例子已经这样建议了。有人可以给我一个答案或任何想法为什么这不起作用吗?
注意:我是 运行 使用 Glassfish 工具的 Eclipse 服务器
当我自己找到答案时,下面的代码不会抛出运行时错误,只是一个编译器警告:
<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()}" />
这已经解决了我的问题,找到并调用了 EqualsValidator!
在 "Process Validations" 阶段分别应用 Renders 和 Validators。
有些渲染是隐式的:
- 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。因此,如果您有一个 bean 属性 "int" 和一个绑定此 属性 的值输入,并且您在其上放了一个字母,并提交了该值,则会自动应用隐式 javax.faces.Integer并抛出异常。此时此刻,如果您在该输入上有一个验证器,它永远不会被调用。
例如:
<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>