我无法找到解决此问题的方法,而且我在Seam论坛上的帖子没有得到答复。我希望有人可以提供帮助。
我是一个与Seam一起工作的菜鸟,所以我确信我只是在做一些愚蠢的事情。任何人都可以给我的任何帮助将不胜感激...我浪费了几个小时而无处可去。我使用jboss工具在eclipse中生成一个seam项目。该工具采用了预先创建的JPA实体并创建了一个基本的webapp。我的第一步是添加一个注册页面,以便我可以创建一些用户并使用数据库身份验证登录(我设置了这个,但是一旦注册页面工作就会测试它)。我使用了seam-booking示例来指导我(基本上将表单内容和附加字段集成到seam-gen应用程序的视图中)。当我测试注册页面时,我得到所有注入字段的NullPointerExceptions。我查看了整个预订示例,仔细查看了示例的网页,并快速阅读了一本书的某些部分,但我看不到哪里需要任何其他配置信息。世界上我做错了什么?请帮忙!!!
我正在使用JBoss Server(社区版)5.1.0GA和Seam 2.2.0GA。
如果您需要的信息比我发布的信息更多,请告诉我。感谢所有提前为您提供帮助!
有状态EJB:
@Stateful
@Scope(EVENT)
@Name("register")
public class RegisterAction implements Register {
@In
private User user;
@PersistenceContext
private EntityManager entityManager;
@In
private FacesMessages facesMessages;
private String verify = null;
private boolean registered = false;
public void registerUser() {
if (user.getPassword().equals(verify)) {
List existing = entityManager
.createQuery(
"select u.userName from User u where u.userName=#{user.userName}")
.getResultList();
if (existing.size() == 0) {
entityManager.persist(user);
facesMessages
.add("Successfully registered as #{user.userName}");
registered = true;
} else {
facesMessages.addToControl("userName",
"Username #{user.userName} already exists");
}
} else {
facesMessages.addToControl("verify", "Re-enter your password");
verify = null;
}
}
public void invalid() {
facesMessages.add("Please try again");
}
public boolean isRegistered() {
return registered;
}
public String getVerify() {
return verify;
}
public void setVerify(String verify) {
this.verify = verify;
}
@Remove
@Destroy
public void destroy() {
}
}
EJB本地接口:
@Local
public interface Register
{
public void registerUser();
public void invalid();
public String getVerify();
public void setVerify(String verify);
public boolean isRegistered();
public void destroy();
}
注册页面的XHTML:
<ui:define name="body">
<rich:panel>
<f:facet name="header">Register</f:facet>
<h:form id="registration">
<fieldset><s:decorate id="firstNameDecorate"
template="layout/edit.xhtml">
<ui:define name="label">First Name:</ui:define>
<h:inputText id="firstName" value="#{user.firstName}"
required="true">
<a:support id="onblur" event="onblur" reRender="firstNameDecorate" />
</h:inputText>
</s:decorate> <s:decorate id="lastNameDecorate" template="layout/edit.xhtml">
<ui:define name="label">Last Name:</ui:define>
<h:inputText id="lastName" value="#{user.lastName}" required="true">
<a:support id="onblur" event="onblur" reRender="lastNameDecorate" />
</h:inputText>
</s:decorate> <s:decorate id="emailDecorate" template="layout/edit.xhtml">
<ui:define name="label">Email:</ui:define>
<h:inputText id="emailAddress" value="#{user.emailAddress}"
required="true">
<a:support id="onblur" event="onblur" reRender="emailDecorate" />
</h:inputText>
</s:decorate> <s:decorate id="usernameDecorate" template="layout/edit.xhtml">
<ui:define name="label">Username:</ui:define>
<h:inputText id="username" value="#{user.userName}" required="true">
<a:support id="onblur" event="onblur" reRender="usernameDecorate" />
</h:inputText>
</s:decorate> <s:decorate id="passwordDecorate" template="layout/edit.xhtml">
<ui:define name="label">Password:</ui:define>
<h:inputSecret id="password" value="#{user.password}"
required="true" />
</s:decorate> <s:decorate id="verifyDecorate" template="layout/edit.xhtml">
<ui:define name="label">Verify Password:</ui:define>
<h:inputSecret id="verify" value="#{register.verify}"
required="true" />
</s:decorate>
<div class="buttonBox"><h:commandButton id="register"
value="Register" action="#{register.registerUser}" />   <s:button
id="cancel" value="Cancel" view="/index.xhtml" /></div>
</fieldset>
</h:form>
</rich:panel>
</ui:define>
</ui:composition>
模板XHTML(注册页面使用此):
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<f:view xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a="http://richfaces.org/a4j"
xmlns:s="http://jboss.com/products/seam/taglib"
contentType="text/html">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>MyApp</title>
<link rel="shortcut icon" href="#{request.contextPath}/favicon.ico"/>
<a:loadStyle src="resource:///stylesheet/theme.xcss"/>
<a:loadStyle src="/stylesheet/theme.css"/>
<ui:insert name="head"/>
</head>
<body>
<ui:include src="menu.xhtml">
<ui:param name="projectName" value="MyApp"/>
</ui:include>
<div class="body">
<h:messages id="messages" globalOnly="true" styleClass="message"
errorClass="errormsg" infoClass="infomsg" warnClass="warnmsg"
rendered="#{showGlobalMessages != 'false'}"/>
<ui:insert name="body"/>
</div>
<div class="footer">
<p>Powered by <a href="http://seamframework.org">Seam</a> #{org.jboss.seam.version} and <a href="http://www.jboss.org/jbossrichfaces">RichFaces</a>. Generated by seam-gen.</p>
<s:fragment rendered="#{init.debug}">
<a:log hotkey="D"/>
<p style="margin-top: -0.5em;">
Conversation: id = #{conversation.id}, #{conversation.longRunning ? 'long running' : 'temporary'}#{conversation.nested ? ', nested, parent id = '.concat(conversation.parentId) : ''}
#{' - '}
Ajax4jsf Log (Ctrl+Shift+D)
#{' - '}
<s:link id="debugConsole" view="/debug.xhtml" value="Debug console" target="debugConsole"/>
#{' - '}
<s:link id="resetSession" view="/home.xhtml" action="#{org.jboss.seam.web.session.invalidate}" propagation="none" value="Terminate session"/>
</p>
</s:fragment>
</div>
</body>
</html>
</f:view>
Seam Components.xml文件:
<?xml version="1.0" encoding="UTF-8"?>
<components xmlns="http://jboss.com/products/seam/components"
xmlns:core="http://jboss.com/products/seam/core"
xmlns:persistence="http://jboss.com/products/seam/persistence"
xmlns:drools="http://jboss.com/products/seam/drools"
xmlns:bpm="http://jboss.com/products/seam/bpm"
xmlns:security="http://jboss.com/products/seam/security"
xmlns:mail="http://jboss.com/products/seam/mail"
xmlns:web="http://jboss.com/products/seam/web"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation=
"http://jboss.com/products/seam/core http://jboss.com/products/seam/core-2.2.xsd
http://jboss.com/products/seam/persistence http://jboss.com/products/seam/persistence-2.2.xsd
http://jboss.com/products/seam/drools http://jboss.com/products/seam/drools-2.2.xsd
http://jboss.com/products/seam/bpm http://jboss.com/products/seam/bpm-2.2.xsd
http://jboss.com/products/seam/security http://jboss.com/products/seam/security-2.2.xsd
http://jboss.com/products/seam/mail http://jboss.com/products/seam/mail-2.2.xsd
http://jboss.com/products/seam/web http://jboss.com/products/seam/web-2.2.xsd
http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.2.xsd">
<core:init debug="true" jndi-pattern="@jndiPattern@"/>
<core:manager concurrent-request-timeout="500"
conversation-timeout="120000"
conversation-id-parameter="cid"
parent-conversation-id-parameter="pid"/>
<!-- Make sure this URL pattern is the same as that used by the Faces Servlet -->
<web:hot-deploy-filter url-pattern="*.seam"/>
<persistence:managed-persistence-context name="entityManager" auto-create="true"
persistence-unit-jndi-name="java:/MyAppEntityManagerFactory"/>
<drools:rule-base name="securityRules">
<drools:rule-files>
<value>/security.drl</value>
</drools:rule-files>
</drools:rule-base>
<security:rule-based-permission-resolver security-rules="#{securityRules}"/>
<security:identity-manager identity-store="#{jpaIdentityStore}" />
<security:jpa-identity-store
entity-manager="#{entityManager}" user-class="my.app.path.dao.profiles.User"
role-class="my.app.path.dao.profiles.Role" />
<event type="org.jboss.seam.security.notLoggedIn">
<action execute="#{redirect.captureCurrentView}"/>
</event>
<event type="org.jboss.seam.security.loginSuccessful">
<action execute="#{redirect.returnToCapturedView}"/>
</event>
<mail:mail-session host="localhost" port="25"/>
</components>
答案 0 :(得分:4)
快速回答,因为我匆忙:
首先解决Seam问题,“User”是一个将自动创建的Seam组件,还是有工厂方法来创建一个?用@In注释一个字段只是所需字符的一半,你仍然需要提供该值的另一端。
从更大的角度来看:
看看你是否可以获得“Seam in Action”的副本,它很好地解释了基础知识。