ViewScoped bean being initialized multiple times with includeViewParams="true"

huangapple
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英文:

ViewScoped bean being initialized multiple times with includeViewParams="true"

问题

我目前正在将一个使用JSF开发的Web应用程序从Wildfly 26迁移到Wildfly 28。所有的代码都已重构为jakarta.*，并且我在使用ViewScoped bean时遇到了一些奇怪的行为。

在包含<h:link ... includeViewParams="true"/>的页面上，相应的后台bean会被多次初始化。

页面Bean

  1. package mypackage;
  3. import java.io.Serializable;
  5. import jakarta.annotation.PostConstruct;
  6. import jakarta.faces.view.ViewScoped;
  7. import jakarta.inject.Named;
  9. @Named
  10. @ViewScoped
  11. public class PageOne implements Serializable {
  13. 	private static final long serialVersionUID = 1L;
  15. 	private String page = null;
  17. 	private String search = null;
  19. 	@PostConstruct
  20. 	private void init() {
  21. 		System.out.println("Page One PostConstruct");
  22. 	}
  24. 	public String getValue() {
  25. 		return "pageTwo";
  26. 	}
  28. 	public String getPage() {
  29. 		return page;
  30. 	}
  32. 	public void setPage(String page) {
  33. 		this.page = page;
  34. 	}
  36. 	public String getSearch() {
  37. 		return search;
  38. 	}
  40. 	public void setSearch(String search) {
  41. 		this.search = search;
  42. 	}
  44. }

页面One XHTML

  1. <!DOCTYPE html>
  2. <html xmlns="http://www.w3.org/1999/xhtml"
  3. 	xmlns:f="jakarta.faces.core"
  4. 	xmlns:ui="jakarta.faces.facelets"
  5. 	xmlns:h="jakarta.faces.html"
  6. 	xmlns:a="jakarta.faces.passthrough">
  8. 	<f:metadata>
  9. 		<f:viewParam name="page" value="#{pageOne.page}" />
  10. 		<f:viewParam name="search" value="#{pageOne.search}" />
  11. 	</f:metadata>
  13. 	<body>
  14. 		<main>
  15. 			<div>
  16. 				<h:link value="#{pageOne.value}" outcome="pageTwo?faces-redirect=true" includeViewParams="true" />
  17. 			</div>
  18. 		</main>
  19. 	</body>
  20. </html>

页面Two XHTML

  1. <!DOCTYPE html>
  2. <html xmlns="http://www.w3.org/1999/xhtml"
  3. 	xmlns:f="jakarta.faces.core"
  4. 	xmlns:ui="jakarta.faces.facelets"
  5. 	xmlns:h="jakarta.faces.html"
  6. 	xmlns:a="jakarta.faces.passthrough">
  8. 	<f:metadata>
  9. 		<f:viewParam name="page" value="#{pageOne.page}" />
  10. 		<f:viewParam name="search" value="#{pageOne.search}" />
  11. 	</f:metadata>
  13. 	<body>
  14. 		<main>
  15. 			<div>Page Two</div>
  16. 		</main>
  17. 	</body>
  18. </html>

当访问页面One时，页面bean会被多次实例化。

相同的代码在Wildfly 26上按预期工作（只创建一个实例）。

即使使用@org.omnifaces.cdi.ViewScoped注解，问题仍然存在。

是否有人曾经遇到类似的问题？

感谢您的帮助！

英文:

I'm currently migrating an web application developed in JSF from Wildfly 26 to Wildfly28.
All the code was refactored to jakarta.* and I'm experiencing some strange behaviour with ViewScoped beans.

On pages containing &lt;h:link ... includeViewParams=&quot;true&quot;/&gt; the corresponding backing bean is being initialized multiple times.

Page Bean

  1. package mypackage;
  3. import java.io.Serializable;
  5. import jakarta.annotation.PostConstruct;
  6. import jakarta.faces.view.ViewScoped;
  7. import jakarta.inject.Named;
  9. @Named
  10. @ViewScoped
  11. public class PageOne implements Serializable {
  13. 	private static final long serialVersionUID = 1L;
  15. 	private String page = null;
  17. 	private String search = null;
  19. 	@PostConstruct
  20. 	private void init() {
  21. 		System.out.println(&quot;Page One PostConstruct&quot;);
  22. 	}
  24. 	public String getValue() {
  25. 		return &quot;pageTwo&quot;;
  26. 	}
  28. 	public String getPage() {
  29. 		return page;
  30. 	}
  32. 	public void setPage(String page) {
  33. 		this.page = page;
  34. 	}
  36. 	public String getSearch() {
  37. 		return search;
  38. 	}
  40. 	public void setSearch(String search) {
  41. 		this.search = search;
  42. 	}
  44. }

Page One XHTML

  1. &lt;!DOCTYPE html&gt;
  2. &lt;html 	xmlns=&quot;http://www.w3.org/1999/xhtml&quot;
  3. 		xmlns:f=&quot;jakarta.faces.core&quot;
  4. 		xmlns:ui=&quot;jakarta.faces.facelets&quot;
  5. 		xmlns:h=&quot;jakarta.faces.html&quot;
  6. 		xmlns:a=&quot;jakarta.faces.passthrough&quot;&gt;
  8. 	&lt;f:metadata&gt;
  9. 		&lt;f:viewParam name=&quot;page&quot; value=&quot;#{pageOne.page}&quot; /&gt;
  10. 		&lt;f:viewParam name=&quot;search&quot; value=&quot;#{pageOne.search}&quot; /&gt;
  11. 	&lt;/f:metadata&gt;
  13. 	&lt;body&gt;
  14. 		&lt;main&gt;
  15. 			&lt;div&gt;
  16. 				&lt;h:link value=&quot;#{pageOne.value}&quot; outcome=&quot;pageTwo?faces-redirect=true&quot; includeViewParams=&quot;true&quot; /&gt;
  17. 			&lt;/div&gt;
  18. 		&lt;/main&gt;
  19. 	&lt;/body&gt;
  20. &lt;/html&gt;

Page Two XHTML

  1. &lt;!DOCTYPE html&gt;
  2. &lt;html 	xmlns=&quot;http://www.w3.org/1999/xhtml&quot;
  3. 		xmlns:f=&quot;jakarta.faces.core&quot;
  4. 		xmlns:ui=&quot;jakarta.faces.facelets&quot;
  5. 		xmlns:h=&quot;jakarta.faces.html&quot;
  6. 		xmlns:a=&quot;jakarta.faces.passthrough&quot;&gt;
  8. 	&lt;f:metadata&gt;
  9. 		&lt;f:viewParam name=&quot;page&quot; value=&quot;#{pageOne.page}&quot; /&gt;
  10. 		&lt;f:viewParam name=&quot;search&quot; value=&quot;#{pageOne.search}&quot; /&gt;
  11. 	&lt;/f:metadata&gt;
  13. 	&lt;body&gt;
  14. 		&lt;main&gt;
  15. 			&lt;div&gt;Page Two&lt;/div&gt;
  16. 		&lt;/main&gt;
  17. 	&lt;/body&gt;
  18. &lt;/html&gt;

When accessing page one, the page bean is instanciated multiple times.

The same code works as expected on Wildfly 26 (only one instance is created).

Even using @org.omnifaces.cdi.ViewScoped annotation, the issue remains.

Has anyone ever had a similar issue?

Thanks for your help!

答案1

得分: 0

Mojarra 4.0.3上的问题已解决。

在将Mojarra从4.0.2更新到4.0.3后，成功在Wildfly 29.0.0 Final上进行了测试。

https://github.com/eclipse-ee4j/mojarra/issues/5290

英文:

Issue fixed on Mojarra 4.0.3

Tested successfully on Wildfly 29.0.0 Final after updating Mojarra from 4.0.2 to 4.0.3

https://github.com/eclipse-ee4j/mojarra/issues/5290

huangapple
  • 本文由 发表于 2023年5月30日 00:28:46
  • 转载请务必保留本文链接：https://go.coder-hub.com/76358930.html
  • cdi
  • jsf
  • mojarra
  • omnifaces
  • wildfly
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