以下是我的要求-
在这里，我有一个p:panelGrid可以添加和删除表格行的。网格包含一些p:inputText和各种其他 PrimeFaces 组件以及p:fileUpload每行中的一个组件。组件p:fileUpload设置了mode="advanced" auto="true"属性，上传成功后自动上传文件并隐藏自身。
整体p:panelGrid在@ViewScoped，因此工作正常。我保留了p:fileUpload组件，@RequestScoped因为对于每个上传请求，它都必须上传文件，但是在添加新行之后，以前的状态不再保留。所以p:fileUpload在前面的行中也开始可见。那是我不想要的。我需要为它编写任何自定义范围吗？下面是视图-|
<h:form>
<p:panel id="agentForm" header="#{msg.AGENTS_INFORMATION}"
style="overflow:auto; margin-bottom: 2px">
<div align="center" style="margin-top: 20px; margin-bottom: 2px">
<ui:repeat value="#{agent.scenarioList}" var="c">
<p:panelGrid>
<p:row>
<p:column>
<p:inputText id="ipaddress" value="#{c.machineIpAddress}"
style="width:90%">
<p:watermark for="ipaddress" value="#{msg.MACHINE_IP_ADDRESS}" />
</p:inputText>
</p:column>
<p:column>
<p:inputText id="username" value="#{c.machineUsername}"
style="width:90%">
<p:watermark for="username" value="#{msg.MACHINE_USERNAME}" />
</p:inputText>
</p:column>
<p:column>
<p:password id="passwd" value="#{c.machinePassword}">
<p:watermark for="passwd" value="#{msg.MACHINE_PASSWORD}" />
</p:password>
</p:column>
<p:column id="fileUpload">
<p:fileUpload rendered="#{!fileUploadController.hidden}"
label="Upload Script" style="font-size: 100% !important;"
showButtons="false"
fileUploadListener="#{fileUploadController.upload}"
mode="advanced" auto="true" sizeLimit="100000"
allowTypes="/(\.|\/)(py|txt)$/"
update="fileUpload, outPanel, :message" />
<p:outputPanel id="outPanel">
<!-- Below outputLabel will be linked to uploaded file, so that User can see the file -->
<p:outputLabel style="cursor: pointer" value="View uploded Script"
label="View Script" rendered="#{fileUploadController.hidden}" />
</p:outputPanel>
</p:column>
<p:column>
<p:inputText id="testname" value="#{c.testName}"
style="width:90%">
<p:watermark for="testname" value="#{msg.TEST_NAME}" />
</p:inputText>
</p:column>
<p:column>
<p:spinner id="threads" value="#{c.threads}" min="1" max="500"
size="8">
<p:tooltip for="threads" value="#{msg.TEST_NAME}"
showEffect="slide" hideEffect="slide" />
</p:spinner>
</p:column>
<p:column>
<p:selectBooleanCheckbox id="chkSelected" value="#{c.selected}">
<p:tooltip for="chkSelected" value="#{msg.CHECKBOX}"
showEffect="slide" hideEffect="slide" />
</p:selectBooleanCheckbox>
</p:column>
</p:row>
</p:panelGrid>
</ui:repeat>
<p:toolbar style="margin-top: 10px;">
<p:toolbarGroup align="right">
<p:commandButton value="#{msg.ADD_IT}"
update=":message, agentForm"
actionListener="#{agent.addComponent()}" />
<p:commandButton value="#{msg.DELETE_IT}"
update=":message, agentForm"
actionListener="#{agent.deleteComponent()}" />
</p:toolbarGroup>
</p:toolbar>
</div>
</p:panel>
</h:form>
我的托管 bean@ViewScoped看起来像这样-
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
import org.ravij.performance.model.Scenario;
@ManagedBean(name = "agent")
@ViewScoped
public class AgentInfo implements Serializable {
private static final long serialVersionUID = 1L;
List<Scenario> scenarioList;
@PostConstruct
public void initBean() {
this.scenarioList = new ArrayList<Scenario>();
this.scenarioList.add(new Scenario());
}
public void addComponent() {
if (this.scenarioList != null) {
this.scenarioList.add(new Scenario());
} else {
this.initBean();
}
}
public void deleteComponent() {
List<Scenario> itemsToDelete = new ArrayList<Scenario>();
if (this.scenarioList != null) {
for (Scenario b : this.scenarioList) {
if (b.isSelected()) {
itemsToDelete.add(b);
}
}
this.scenarioList.removeAll(itemsToDelete);
}
}
public List<Scenario> getScenarioList() {
return scenarioList;
}
public void setScenarioList(List<Scenario> scenarioList) {
this.scenarioList = scenarioList;
}
}
Scenario 对象包含一行的所有信息。下面是代码-
package org.ravij.performance.model;
import java.io.Serializable;
public class Scenario implements Serializable {
private String machineIpAddress;
private String machineUsername;
private String machinePassword;
private String uploadedFilePath;
private String testName;
private int threads = 1;
private boolean selected = false;
//Below are the getters and setter w.r.t all the above variables
//I am not putting it, to make the code short
}
托管 beanFileUploadController位于@RequestScoped