我正在使用primefaces数据表来显示数据列表。我希望我的用户能够选择多行，然后对所选行代表的数据执行操作。一切正常，直到执行操作后发现无法解决选择。
以下是我的xhtml页面
<h:form enctype="multipart/form-data" id="upload">
<primefaces-p:panel closable="false" collapsed="false" header="Excel Contact Uploader" id="pnlupload" rendered="true" toggleable="false" visible="true" widgetVar="pnlupload">
<primefaces-p:growl id="msg" showDetail="true" life="3000" showSummary="true">
</primefaces-p:growl>
<primefaces-p:fileUpload auto="true"
allowTypes="/(\.|\/)(xls)$/"
sizeLimit="1024000"
mode="advanced"
multiple="true" invalidFileMessage="Invalid file type" invalidSizeMessage="File too large" dragDropSupport="true" fileUploadListener="#{excelFileController.handleFileUpload}" showButtons="true" update="msg, tblcontacts
" required="false"/>
<br />
<br />
<primefaces-p:scrollPanel rendered="true" style="height:200px;">
<primefaces-p:dataTable emptyMessage="No Contacts Uploaded" id="tblcontacts" rendered="true" rows="8"
value="#{excelFileController.contacts}" var="contact" style="width:50pc;">
<primefaces-p:column style="width:18px" headerText="Select">
<h:selectBooleanCheckbox value="#{contact.selected}" />
</primefaces-p:column>
<primefaces-p:column headerText="File Name">
#{contact.groupName}
</primefaces-p:column>
<primefaces-p:column headerText="Number of Contacts">
#{contact.numberofentries}
</primefaces-p:column>
<primefaces-p:column>
<h:button outcome="blkedit?faces-redirect=true" rendered="true" value="Edit">
<f:param name="contact" value="#{contact.contactId}"/>
</h:button>
</primefaces-p:column>
</primefaces-p:dataTable>
</primefaces-p:scrollPanel>
<br />
</primefaces-p:panel>
<h:commandButton value="Delete" id="btndelete" action="#{excelFileController.removeContact}" immediate="true" disabled="false" rendered="true"/>
<h:message for="btndelete" />
</h:form>
下面是我的支持豆
@Named
@ViewAccessScoped
public class ExcelFileController implements Serializable, IFileController {
/**
*
*/
private static final long serialVersionUID = -8117258104485487921L;
@Inject
PhoneNumberFormatter formatter;
@Inject
@Authenticated
UserProfile profile;
public PhoneNumberFormatter getFormatter() {
return formatter;
}
public void setFormatter(PhoneNumberFormatter formatter) {
this.formatter = formatter;
}
@EJB
BulkContactDeleter deleter;
@Inject
Logger logger;
@Inject
@CurrentContext
FacesContext context;
@Inject
BulkSMSContactListProducer listProducer;
@Inject
ConfigurationListProducer producer;
private BulkSMSContacts[] contactsSelected;
private List<BulkSMSContacts> contacts;
public BulkSMSContacts[] getContactsSelected() {
return contactsSelected;
}
public void setContactsSelected(BulkSMSContacts[] contactsSelected) {
this.contactsSelected = contactsSelected;
}
/*
* public BulkContactDataModel getContactDataModel() { return
* contactDataModel; }
*/
@PostConstruct
public void init() {
logger.log(Level.INFO, "Entering excel file controller");
/*
* contactDataModel = new BulkContactDataModel(
* listProducer.getBulkSMSContacts());
*/
this.contacts = listProducer.getBulkSMSContacts();
}
@Override
public String removeContact() {
int contactsdeleted = 0;
if (this.contacts != null) {
/*
* for (BulkSMSContacts contacts : contactsSelected) { if (contacts
* != null) { deleter.deleteContact(contacts); contactsdeleted += 1;
* }
*/
for (BulkSMSContacts c : contacts) {
if (c.isSelected()) {
deleter.deleteContact(c);
contactsdeleted += 1;
}
}
contacts = listProducer.getBulkSMSContacts();
logger.log(Level.INFO, "Deleted " + contactsdeleted + " Contacts");
context.addMessage(null, new FacesMessage(
FacesMessage.SEVERITY_INFO, "Success", contactsdeleted
+ " entries where deleted successfully"));
} else {
context.addMessage(null, new FacesMessage(
FacesMessage.SEVERITY_ERROR, "Error",
"No contact file was selected!"));
}
return null;
}
public List<BulkSMSContacts> getContacts() {
return contacts;
}
public void setContacts(List<BulkSMSContacts> contacts) {
this.contacts = contacts;
}
}
下面是我的模型定义
@Entity
public class BulkSMSContacts implements Serializable {
private static final long serialVersionUID = -6444763251149211384L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@XmlAttribute
private long contactId;
@XmlElement
@NotNull(message = "message.validator.notnull")
@Size(min = 9, max = Integer.MAX_VALUE, message = "message.validator.size")
@Column(nullable = false, length = Integer.MAX_VALUE, unique = false)
@Basic(fetch = FetchType.EAGER)
private String contacts;
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "Id", nullable = false)
@XmlElement(type = SMSAccount.class)
private SMSAccount account;
@NotNull(message = "message.validator.notnull")
@Size(min = 2, max = 100, message = "message.validator.size")
@Column(length = 100, nullable = false, unique = false)
@XmlElement
private String groupName;
@Column(nullable = true)
private int numberofentries = 0;
@javax.persistence.Transient
private boolean selected;
//getters and setters
问题在于单击删除按钮时（尽管调用了removeContact（）方法。所有行的计算结果均为未选中）。
我也尝试过使用primefaces展示方法，但仍然是示例问题。
请问我做错什么了吗？
最佳答案
我不明白为什么要在实体类中设置选择属性。
尝试这样做
设置数据模型：
public class BulkSMSContactsDataModel extends ListDataModel<BulkSMSContacts> implements SelectableDataModel<BulkSMSContacts> {
public BulkSMSContactsDataModel() {
}
public BulkSMSContactsDataModel(List<BulkSMSContacts> data) {
super(data);
}
@Override
public BulkSMSContacts getRowData(String rowKey) {
List<BulkSMSContacts> contacts = (List<BulkSMSContacts>) new yourDao.getListOfBulkSMSContacts(); //yourDAO :BulkSMSContactsSelector i guess
for(BulkSMSContacts c : contacts) {
if(String.valueOf(c.getContactId()).equals(rowKey))
return c;
}
return null;
}
@Override
public Object getRowKey(BulkSMSContacts obj) {
return String.valueOf(obj.getContactId());
}
}
配置你的bean：
public class ExcelFileController implements Serializable, IFileController {
private BulkSMSContacts[] contactsSelected;
private List<BulkSMSContacts> contacts;
private BulkSMSContacts[] selectedcontacts;
private BulkSMSContactsDataModel contactsList;
public ExcelFileController() {
contactsList = new BulkSMSContactsDataModel(contacts);
}
// getters and setters
// the rest of your code
}
配置你的xhtml
<p:dataTable emptyMessage="No Contacts Uploaded" id="tblcontacts" rendered="true" rows="8" value="#{excelFileController.contactsList}" var="contact" style="width:50pc;" selection="#{excelFileController.selectedcontacts}">
<p:column selectionMode="multiple" style="width:20px" />
<p:column headerText="File Name">
#{contact.groupName}
</p:column>
<p:column headerText="Number of Contacts">
#{contact.numberofentries}
</p:column>
<!-- the rest -->
更新您的用户界面。
使用p代替primefaces -p可以更轻松地阅读您的代码。 :)