源码包的事情就算了，不过这回我是真的有解决不了的问题要请教大家了...

[pf_miles]

大家应该知道seam里面自带的messages的那个example吧？我运行这个例子的时候是没问题的，在jboss4.2.2GA的
default配置下。
然后我用JBossTools-2.0.0.GA＋eclipse 3.3.1.1建立了一个seam web project, 跟着向导建立的；然
后参考seam2.0的reference:
http://www.redsaga.com/opendoc/Seam2.0/html/tutorial.html#messages
一步一步地做，然后出问题了：
org.jboss.seam.InstantiationException: Could not instantiate Seam
component: manager
at org.jboss.seam.Component.newInstance(Component.java:1970)
at org.jboss.seam.Component.getInstance(Component.java:1873)
at org.jboss.seam.Component.getInstance(Component.java:1840)
at org.jboss.seam.Component.getInstanceFromFactory(Component.java:
1919)
at org.jboss.seam.Component.getInstance(Component.java:1863)
at org.jboss.seam.Component.getInstance(Component.java:1840)
at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:55)
at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:50)
at org.jboss.seam.el.SeamELResolver.resolveBase(SeamELResolver.java:
166)
at org.jboss.seam.el.SeamELResolver.getValue(SeamELResolver.java:53)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
at
com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:
64)
at org.jboss.el.parser.AstIdentifier.getValue(AstIdentifier.java:44)
at org.jboss.el.parser.AstValue.getValue(AstValue.java:63)
at org.jboss.el.parser.AstGreaterThan.getValue(AstGreaterThan.java:
21)
at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:
186)
at
com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:
71)
at
javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:
370)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:880)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:892)
at
com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:
592)
at
org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:
108)
at
org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:
216)
at
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:
106)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:
251)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:
144)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:
290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:
206)
at org.jboss.seam.servlet.SeamFilter
$FilterChainImpl.doFilter(SeamFilter.java:83)
at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:
85)
at org.jboss.seam.servlet.SeamFilter
$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:
64)
at org.jboss.seam.servlet.SeamFilter
$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
at org.jboss.seam.servlet.SeamFilter
$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:
141)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
at org.jboss.seam.servlet.SeamFilter
$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
at org.jboss.seam.servlet.SeamFilter
$FilterChainImpl.doFilter(SeamFilter.java:69)
at
org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:
68)
at org.jboss.seam.servlet.SeamFilter
$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:
235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:
206)
at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:
96)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:
235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:
206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:
230)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:
175)
at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:
179)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:
432)
at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:
84)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:
127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:
102)
at
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:
157)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:
109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:
262)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:
844)
at org.apache.coyote.http11.Http11Protocol
$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:
446)
at java.lang.Thread.run(Thread.java:619)
Caused by: javax.naming.NameNotFoundException: ManagerBean not bound
at org.jnp.server.NamingServer.getBinding(NamingServer.java:529)
at org.jnp.server.NamingServer.getBinding(NamingServer.java:537)
at org.jnp.server.NamingServer.getObject(NamingServer.java:543)
at org.jnp.server.NamingServer.lookup(NamingServer.java:267)
at org.jnp.server.NamingServer.lookup(NamingServer.java:270)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:667)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:627)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at org.jboss.seam.Component.instantiateSessionBean(Component.java:
1287)
at org.jboss.seam.Component.instantiate(Component.java:1273)
at org.jboss.seam.Component.newInstance(Component.java:1966)
... 63 more

我的“manager”就相当于例子里面的“messageManager”， "ManagerBean"就相当于例子里面
的“MessageManagerBean”，只是名字不同而已。

然后我的Scoped Variables：
Request ParametersName Value
None
Request AttributesName Value
ajaxContext org.ajax4jsf.context.AjaxContextImpl@1ad552c
message org.perizone.Messages2.entity.Message@b2fd30
Session AttributesName Value
None
Application AttributesName Value
securityRules org.jboss.seam.drools.RuleBase@10c81a6

可以看到，我的entityBean都被正确地放到request scope里面了，但我的stateful sessionBean却没有，我的
sessionBean实现的代码：

@Stateful
@Name("manager")
@Scope(ScopeType.SESSION)
public class ManagerBean implements Serializable, Manager {

private static final long serialVersionUID = 3540863204015110619L;

@In
FacesMessages facesMessages;

@DataModel
private List<Message> messageList;

@DataModelSelection
@Out(required = false)
private Message message;

@PersistenceContext(type = PersistenceContextType.EXTENDED)
private EntityManager em;

@Factory("messageList")
@SuppressWarnings("all")
public void findMessages() {
messageList = em.createQuery("from Message msg order by
msg.dateTime desc").getResultList();
}

public void select() {
if (this.message != null) {
this.message.setRead(true);
}
}

public void delete() {
if (message != null) {
messageList.remove(message);
em.remove(message);
message = null;
}
}

// add additional action methods
@Remove
@Destroy
public void destroy() {
}

}

可以说跟例子没什么区别。

这是我的sessionBean的local interface:

@Local
public interface MessageManager
{
public void findMessages();
public void select();
public void delete();
public void destroy();
}

这是我的components.xml:

<?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:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation=
"http://jboss.com/products/seam/core
http://jboss.com/products/seam/core-2.0.xsd
http://jboss.com/products/seam/persistence
http://jboss.com/products/seam/persistence-2.0.xsd
http://jboss.com/products/seam/drools
http://jboss.com/products/seam/drools-2.0.xsd
http://jboss.com/products/seam/bpm
http://jboss.com/products/seam/bpm-2.0.xsd
http://jboss.com/products/seam/security
http://jboss.com/products/seam/security-2.0.xsd
http://jboss.com/products/seam/mail
http://jboss.com/products/seam/mail-2.0.xsd
http://jboss.com/products/seam/components
http://jboss.com/products/seam/components-2.0.xsd">

<core:init debug="true" jndi-pattern="@jndiPattern@"/>

<core:manager concurrent-request-timeout="500"
conversation-timeout="120000"
conversation-id-parameter="cid"/>

<persistence:managed-persistence-context name="entityManager"
auto-create="true"
persistence-unit-jndi-name="java:/
Messages2EntityManagerFactory"/>

<drools:rule-base name="securityRules">
<drools:rule-files>
<value>/security.drl</value>
</drools:rule-files>
</drools:rule-base>

<security:identity security-rules="#{securityRules}" authenticate-
method="#{authenticator.authenticate}" remember-me="true"/>

<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="2525" username="test"
password="test" />

<!-- For use with jBPM pageflow or process management -->
<!--
<bpm:jbpm>
<bpm:process-definitions></bpm:process-definitions>
<bpm:pageflow-definitions></bpm:pageflow-definitions>
</bpm:jbpm>
-->

</components>


最最开始的那个例子我也做过，那个registration的例子，是用的statelessSessionBean,一点问题都没有，很顺利。可是一
旦用到stateful 的sessionBean,就报上面的错误......
把我整晕了，我翻了网上好多文章了，还是没有解决，迫不得已发帖请教，各位大虾初学seam的时候应该也遇到过吧？请指点一二！

[pf_miles]

问题了结了，搞了半天是数据源配置文件XX－ds.xml没有copy到deploy下造成的...
服了..看来还得多多了解一下jboss配置的东西啊。那玩意儿虽然天天开发都在用，但很少去注意它的配置阿...
seam涉及的东西真多，不是一下子就能拿得起来的...

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>
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> Request ParametersName Value
> None
> Request AttributesName Value
> ajaxContext org.ajax4jsf.context.AjaxContextImpl@1ad552c
> message org.perizone.Messages2.entity.Message@b2fd30
> Session AttributesName Value
> None
> Application AttributesName Value
> securityRules org.jboss.seam.drools.RuleBase@10c81a6
>

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> sessionBeanʵ�ֵĴ��룺

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> public void delete();
> public void destroy();
> }
>

> �����ҵ�components.xml:

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