JSF 2登录用户之间的托管bean并发访问

时间：2016-08-29 17:50:11

标签： spring jsf jsf-2 managed-bean

展示我的问题的基本示例：

  1. 两个用户A和B从不同的浏览器连接到JSF Web应用程序，欢迎页面显示他们的文档和搜索面板。
  2. 他们都希望使用单词或句子搜索文档。
  3. （例如）A想要搜索单词＆＃34; sheet＆＃34;而且B想要搜索“＃34; virus＆＃34;”这个词。
  4. 他们在表格输入中写下这个单词并同时提交表格。
  5. A得到她的搜索结果，而B突然得到也与A相同的结果，并且他没有键入＆＃34; sheet＆＃34;。< / LI>

    这是我的managedBean：

    @ManagedBean
@RequestScoped
public class DocumentController implements Serializable {

private String motSearch= null;
private boolean searching = false;
private boolean rechercheStructure = true;
private DocumentDao dao; //Dependency injection with Spring

public void onload(Utilisateur user)
{
    if(!searching)
    {
        motSearch = null;

        documentsListForConnectedUser(user);
    }
    else{
        search(user);
    }
}

public void search(Utilisateur user)
{
    documentsListForConnectedUser(user);// getting documents list from database

    searching = true;

    List<Document> list = new ArrayList<>();
    list.addAll(user.getDocuments());

    user.setDocuments(new ArrayList<>());

    //...

    if(motSearch != null && !motSearch.isEmpty())
    {
        LOGGER.info("motSearch : "+motSearch.toLowerCase());

        List<Document> docs = user.getDocuments();

        for(Document doc : list)
        {
            if(!docs.contains(doc) && (doc.getNom().toLowerCase().contains(motSearch.toLowerCase()) ||
                    doc.getDescription().toLowerCase().contains(motSearch.toLowerCase()) ||
                    doc.getTheme().toLowerCase().contains(motSearch.toLowerCase()) ||
                    doc.getKeywords().contains(motSearch.toLowerCase())))
            {
                docs.add(doc);
            }
        }

        docs = filter(docs);

        if(docs.size() == 0)
        {
            user.setDocuments(null);
        }
    }
    else
    {
        user.setDocuments(list);
    }

}
}

    JSF页面ListeDocuments.xhtml：

    <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
  xmlns:h="http://xmlns.jcp.org/jsf/html"
  xmlns:f="http://xmlns.jcp.org/jsf/core"
  xmlns:p="http://primefaces.org/ui">
<h:head>
<f:metadata>
    <f:viewParam name="searching" value="#{documentController.searching}" />
    <f:viewParam name="structure" value="#{documentController.rechercheStructure}"/>
    <f:viewParam name="q" value="#{documentController.motSearch}"/>
    <f:viewAction action="#{documentController.onload(user)}"/>
</f:metadata>
</h:head>

<h:body>
<h:form id="myForm" prependId="false" >
        <h:inputHidden value="true" id="searching"/>

        <div class="center">
            <h:selectOneRadio converter="javax.faces.Boolean"
                              value="#{documentController.rechercheStructure}" onchange="check()" id="structure">
                <f:selectItem itemLabel="Recherche structurée" itemValue="true" />
                <f:selectItem itemLabel="Recherche plein texte" itemValue="false" />
            </h:selectOneRadio>
        </div>

        <div class="row">
            <div class="input-field col s12 m7 l8">
                <p:inputTextarea styleClass="materialize-textarea" id="q" value="#{documentController.motSearch}"/>
                <label for="q">Mot/phrase à chercher</label>
            </div>
        </div>

        <p:commandButton styleClass="btn blue-grey" update=":table"
                         type="submit" value="Chercher"
                         action="ListeDocuments?faces-redirect=true&amp;includeViewParams=true" />
</h:form>

<p:dataTable id="table" tableStyleClass="hoverable striped" rows="10" paginator="true"
             value="#{user.documents}" var="doc"
             paginatorPosition="bottom" paginatorAlwaysVisible="false" styleClass="borderless">

    <!--Columns-->

</p:dataTable>

</h:body>

</html>

    我的web.xml：

    <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
                         http://xmlns.jcp.org/xml/ns/javaee/web-app_3_0.xsd"
     id="WebApp_ID" version="3.0">

<welcome-file-list>
    <welcome-file>index.xhtml</welcome-file>
</welcome-file-list>

<session-config>
    <tracking-mode>COOKIE</tracking-mode>
</session-config>

<filter>
    <filter-name>PrimeFaces FileUpload Filter</filter-name>
    <filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
</filter>

<filter-mapping>
    <filter-name>PrimeFaces FileUpload Filter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
</filter-mapping>

<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>/faces/*</url-pattern>
</servlet-mapping>

<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.faces</url-pattern>
</servlet-mapping>

<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.xhtml</url-pattern>
</servlet-mapping>

<error-page>
    <error-code>404</error-code>
    <location>/404.html</location>
</error-page>

<error-page>
<error-code>500</error-code>
<location>/serverError.xhtml</location>
</error-page>

<error-page>
    <exception-type>java.lang.Exception</exception-type>
    <location>/serverError.xhtml</location>
</error-page>

<!-- Add Support for Spring -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>WEB-INF/applicationContext.xml</param-value>
</context-param>

<listener>
    <listener-class>
        org.springframework.web.context.ContextLoaderListener
    </listener-class>
</listener>

<listener>
    <listener-class>
        org.springframework.web.context.request.RequestContextListener
    </listener-class>
</listener>

<context-param>
    <param-name>primefaces.THEME</param-name>
    <param-value>none</param-value>
</context-param>

<context-param>
    <param-name>javax.faces.FACELETS_SKIP_COMMENTS</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>

<context-param>
    <param-name>javax.faces.PROJECT_STAGE</param-name>
    <param-value>Development</param-value>
</context-param>

</web-app>

    faces-config.xml文件：

    <?xml version='1.0' encoding='UTF-8'?>
<faces-config version="2.2" xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_2.xsd">

<application>
    <el-resolver>
        org.springframework.web.jsf.el.SpringBeanFacesELResolver
    </el-resolver>
</application>

    PS ：我正在使用：

    1. Mojarra 2.2.9 JSF实施。
    2. 带有Servlet 3.0的Apache Tomcat 7服务器。
    3. Spring但我只使用它来注入DAOs等接口实现。
    4. Hibernate 4 / JPA as ORM。
    5. 由于我需要将Omnifaces 2.4库用于其转换器，因此我不得不整合CDI（weld-servlet-2.3.5 final）并创建一个空的beans.xml（来自BalusC博客的指南），我不在我的managedBeans中使用其任何注释。
    6. 我使用的唯一注释是来自@ManagedBean的{​​{1}}和@xxxxScoped，有时是javax.faces.bean。
    7. 最后是Primefaces 6.0

      8. 感谢任何帮助！

0 个答案:

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