Question

我正在尝试上传文件并使用PrimeFaces 3.5从选择框传递一个参数。

这是我的表格：

<h:form id="idAssessmentsUploadForm" enctype="multipart/form-data">

    <h:panelGrid cellspacing="10" styleClass="standard-panel" columns="2" id="idAssessmentsUploadPanelGrid">

        <h:outputText value="#{msg['application.assessmentsUploadRequest.loader']}"/>
        <p:selectOneMenu id="idLoader"
                         style="width: 230px;"
                         required="true"
                         value="#{configurationBean.loaderName}">

            <f:selectItems value="#{configurationBean.loaders}"/>

        </p:selectOneMenu>

    </h:panelGrid>

    <p:fileUpload fileUploadListener="#{configurationAction.processConfigurationUpload}"
                  allowTypes="/(\.|\/)(gif|jpe?g|png)$/"
                  update="messages"
                  mode="advanced"/>

</h:form>

ConfiguratioBean只是一个JSF @ViewScoped bean，它包含loaderName的getter和setter。

我的ConfigurationAction bean：

@ManagedBean(name = Beans.CONFIGURATION_ACTION)
@ViewScoped
public class ConfigurationAction extends BaseAction {

    public void processConfigurationUpload(FileUploadEvent event) {

        ConfigurationBean configurationBean = getBean(Beans.CONFIGURATION_BEAN);

        UploadedFile file = event.getFile();

        addInfoMessage("Upload Successful");
    }

}

我在点击上传时收到该文件，但loaderName中的参数null始终为configurationBean。如果我尝试将文件上传切换到简单模式，请将文件作为值放在configurationBean中，并有一个命令按钮来上传单个文件，然后它正在运行。但我需要上传advanced。所以问题是如果PrimeFaces文件上传表格处于高级模式，如何将参数传递给支持bean？

Answer 1

使用remoteCommand。例如：

<h:form id="idAssessmentsUploadForm" enctype="multipart/form-data">

    <h:panelGrid cellspacing="10" styleClass="standard-panel" columns="2" id="idAssessmentsUploadPanelGrid">

        <h:outputText value="#{msg['application.assessmentsUploadRequest.loader']}"/>
        <p:selectOneMenu id="idLoader"
                         style="width: 230px;"
                         value="#{configurationBean.loaderName}"
                         required="true">

            <f:selectItems value="#{configurationBean.loaders}"/>

        </p:selectOneMenu>

    </h:panelGrid>

    <p:fileUpload fileUploadListener="#{configurationAction.processConfigurationUpload}"
                  allowTypes="/(\.|\/)(gif|jpe?g|png)$/"
                  required="true"
                  onstart="loadProperty()"
                  update="messages"
                  mode="advanced"/>

    <p:remoteCommand name="loadProperty">
        <f:setPropertyActionListener for="idLoader"
                                     value="#{configurationBean.loaderName}"
                                     target="#{configurationBean.loaderName}"/>
    </p:remoteCommand>

</h:form>

未经测试但应该有效。

使用PrimeFaces文件上传将值传递给辅助bean

1 个答案: