小编boh*_*ius的帖子

在JBoss 7.1.1上的JavaEE6项目(EJB3,JSF2)中,似乎我们有@ViewScoped bean的内存泄漏.最后一天,我花时间在这个问题调查上.所以我创建了两个页面的简单项目,以保证在第一页离开@ViewScoped bean之后将被释放.

<context-param>  //web.xml
   <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
   <param-value>server</param-value>
</context-param>
<context-param>
   <param-name>javax.faces.PARTIAL_STATE_SAVING</param-name>
   <param-value>false</param-value>
</context-param>

TreeBean.java

@ManagedBean
@ViewScoped
public class TreeBean implements Serializable {
 private TreeNode root;  
 public static AtomicInteger count = new AtomicInteger(0);

@Override
protected void finalize() throws Throwable {
    System.out.println("TreeBean beans count: " + count.decrementAndGet() + " (FINALISATION)");
}


public TreeBean() {  
    super();
    System.out.println("TreeBean beans count: " + count.incrementAndGet() + " (INITIALISATION)");
}  

first.xhtml

  ....
  <h:form id="frm">
        <p:tree
            value="#{treeBean.root}"
            var="node"
            id="tree">
    ....
   <p:commandLink
            action="second.xhtml?faces-redirect=true"
            value="toSecond" />
    ....            

second.xhtml

  ....
  <h:form …