Jsf 2 PrimeFaces从Lazyloading数据表导出数据
我想导出一个在报告生成期间具有LazyLoad数据模型的数据表（带分页） 问题： 当我导出时，报表将从数据库逐页生成，然后导出到Excel/PDF，这会占用更多的时间。我希望通过跳过数据集的逐页生成，在单个数据库访问中获得它 我正在生成代码片段，如下所示： JSF:Jsf 2 PrimeFaces从Lazyloading数据表导出数据,jsf-2,primefaces,datatable,lazy-loading,data-export,Jsf 2,Primefaces,Datatable,Lazy Loading,Data Export,我想导出一个在报告生成期间具有LazyLoad数据模型的数据表（带分页） 问题： 当我导出时，报表将从数据库逐页生成，然后导出到Excel/PDF，这会占用更多的时间。我希望通过跳过数据集的逐页生成，在单个数据库访问中获得它 我正在生成代码片段，如下所示： JSF: <p:dataTable id="dTable" var="dev" value="#{ReportAction.lazyModel}" styleClass ="table_paginator" rowKey="#{
<p:dataTable id="dTable" var="dev" value="#{ReportAction.lazyModel}"
styleClass ="table_paginator" rowKey="#{device.macAddress}" paginatorPosition="bottom"
paginator="true" rowsPerPageTemplate="10,20,30" rows="10" lazy="true"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
emptyMessage="Select appropriate conditions and click 'Generate Report'">
<f:facet name="header">
<h:commandLink actionListener="#{ReportAction.doExport}">
<p:graphicImage value="../../../resources/images/excel.png"
alt="XLS" style="float:right;width:32px;height:32px" />
<p:dataExporter type="xls" target="dTable" fileName="#{ReportAction.fileName}"
preProcessor="#{ReportAction.preProcess}"
postProcessor="#{ReportAction.postProcessXLS}" />
</h:commandLink>
</f:facet>
<!-- All the columns in Data Table -->
</p:dataTable>
public class ReportAction {
private ConfigurationReportDataModel mediumConfigModel;
private List<FieldReportModel> configModelList;
private String fileName;
private LazyDataModel<ConfigurationReportModel> lazyModel;
private boolean export;
public ReportAction() {
configModelList = new ArrayList<ConfigurationReportModel>();
export = false;
mediumConfigModel = new ReportDataModel();
}
public void generateFieldReport() {
lazyFieldModel = new ConfigurationReportDataModel(day, fromDate,
location,store,engineer, status, toDate, export);
}
public void preProcess(Object document) {
export = true;
log.info("preProcess::Lazy model : Page Sizing");
if(lazyFieldModel != null) {
lazyFieldModel.setPageSize(1000000);
}
log.info("preProcess::Export All Details");
mediumConfigModel.setExport(true);
}
public void postProcessXLS(Object document) {
HSSFWorkbook wb = (HSSFWorkbook) document;
HSSFSheet sheet = wb.getSheetAt(0);
HSSFRow header = sheet.getRow(0);
HSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setFillForegroundColor(HSSFColor.GREEN.index);
cellStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
for (int i = 0; i < header.getPhysicalNumberOfCells(); i++) {
HSSFCell cell = header.getCell(i);
cell.setCellValue(cell.getStringCellValue().toUpperCase());
cell.setCellStyle(cellStyle);
sheet.autoSizeColumn(i);
}
export = false;
mediumConfigModel.setExport(false);
}
public List<ConfigurationReportModel> getConfigModelList() {
return configModelList;
}
public void setConfigModelList(
ArrayList<ConfigurationReportModel> configModelList) {
this.configModelList = configModelList;
}
public String getFileName() {
SimpleDateFormat formatter = new SimpleDateFormat("ddMMyyyy_HHmmss");
fileName = "Config_Report_".concat(formatter.format(new Date()));
return fileName;
}
public void setMediumConfigModel(
ConfigurationReportDataModel mediumConfigModel) {
this.mediumConfigModel = mediumConfigModel;
}
public void setConfigModelList(
List<ConfigurationReportModel> configModelList) {
this.configModelList = configModelList;
}
public LazyDataModel<ConfigurationReportModel> getLazyFieldModel() {
log.info("##########getLazyFieldModel###########");
if(export) {
log.info("getLazyFieldModel::Will get Exported........");
lazyFieldModel = new ConfigurationReportDataModel(day, fromDate,
location, store, engineer, status, toDate, true);
lazyFieldModel.load(1, 1000000000, null, null, null);
}
return lazyFieldModel;
}
public void setLazyFieldModel(
LazyDataModel<ConfigurationReportModel> lazyFieldModel) {
this.lazyFieldModel = lazyFieldModel;
}
}
public class ConfigurationReportDataModel extends
LazyDataModel<ConfigurationReportModel> {
private List<ConfigurationReportModel> configReport;
private boolean export;
public ConfigurationReportDataModel() {
this.export = false;
}
public List<ConfigurationReportModel> load(int first, int pageSize,
String sortField, SortOrder sortOrder, Map<String, String> filters) {
UIClient client = new UIClient();
ReportData data = null;
// ///////////////////
if(export) {
log.info("Do Export....");
first = 1;
pageSize = 1000000000;
}
deviceList = new ArrayList<DeviceGlobal>();
// Retrieves data from Database with the number of record (page size)
data = client.generateFieldReport(first, pageSize,
Integer.parseInt(location), Integer.parseInt(store),
engineer, getTimeToBeginningOfDay(), getTimeToEndofDay(),
status);
log.info("Obtained data : " + data);
if (data != null) {
log.info("Got devices : " + data.getRecords().size());
deviceList = (ArrayList<DeviceGlobal>) data.getRecords();
// ///////////////////
int record = first + 1;
ConfigurationReportModel storeModel = null;
DeviceGlobal deviceGlobal = null;
configReport = new ArrayList<ConfigurationReportModel>();
for (Iterator<DeviceGlobal> iterator = deviceList.iterator(); iterator
.hasNext();) {
deviceGlobal = (DeviceGlobal) iterator.next();
storeModel = new ConfigurationReportModel(deviceGlobal,
record++);
configReport.add(storeModel);
}
log.info("Total Config Report : " + configReport.size());
// rowCount
int dataSize = data.getReportCount();
this.setRowCount(dataSize);
log.info("Report Count: " + data.getReportCount());
if(export) {
return configReport;
}
else {
// paginate
if (dataSize > pageSize) {
try {
return configReport;
} catch (IndexOutOfBoundsException e) {
return configReport;
}
} else {
return configReport;
}
}
} else {
log.info("Got no devices");
deviceList = new ArrayList<DeviceGlobal>();
configReport = new ArrayList<ConfigurationReportModel>();
this.setRowCount(0);
return configReport;
}
}
}
公共类ReportAction{
私有配置报告数据模型mediumConfigModel；
私有列表配置模型列表；
私有字符串文件名；
私人LazyDataModel lazyModel；
私人布尔输出；
公共报告行动（）{
configModelList=新的ArrayList（）；
导出=假；
mediumConfigModel=新的ReportDataModel（）；
}
public void generateFieldReport（）{
lazyFieldModel=新配置报告数据模型（日期，起始日期，
位置、商店、工程师、状态、日期、出口）；
}
公共作废预处理（对象文档）{
导出=真；
info（“预处理：：惰性模型：页面大小”）；
如果（lazyFieldModel！=null）{
lazyFieldModel.setPageSize（1000000）；
}
log.info（“预处理：：导出所有详细信息”）；
mediumConfigModel.setExport（true）；
}
公共无效后处理XLS（对象文档）{
HSSF工作手册wb=（HSSF工作手册）文件；
HSSFSheet sheet=wb.getSheetAt（0）；
HSSFRow标题=sheet.getRow（0）；
HSSFCellStyle cellStyle=wb.createCellStyle（）；
cellStyle.setFillForegroundColor（HSSFColor.GREEN.index）；
cellStyle.setFillPattern（HSSFCellStyle.SOLID\u前景）；
对于（int i=0；ipublic class ReportAction {
private ConfigurationReportDataModel mediumConfigModel;
private List<FieldReportModel> configModelList;
private String fileName;
private LazyDataModel<ConfigurationReportModel> lazyModel;
private boolean export;
public ReportAction() {
configModelList = new ArrayList<ConfigurationReportModel>();
export = false;
mediumConfigModel = new ReportDataModel();
}
public void generateFieldReport() {
lazyFieldModel = new ConfigurationReportDataModel(day, fromDate,
location,store,engineer, status, toDate, export);
}
public void preProcess(Object document) {
export = true;
log.info("preProcess::Lazy model : Page Sizing");
if(lazyFieldModel != null) {
lazyFieldModel.setPageSize(1000000);
}
log.info("preProcess::Export All Details");
mediumConfigModel.setExport(true);
}
public void postProcessXLS(Object document) {
HSSFWorkbook wb = (HSSFWorkbook) document;
HSSFSheet sheet = wb.getSheetAt(0);
HSSFRow header = sheet.getRow(0);
HSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setFillForegroundColor(HSSFColor.GREEN.index);
cellStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
for (int i = 0; i < header.getPhysicalNumberOfCells(); i++) {
HSSFCell cell = header.getCell(i);
cell.setCellValue(cell.getStringCellValue().toUpperCase());
cell.setCellStyle(cellStyle);
sheet.autoSizeColumn(i);
}
export = false;
mediumConfigModel.setExport(false);
}
public List<ConfigurationReportModel> getConfigModelList() {
return configModelList;
}
public void setConfigModelList(
ArrayList<ConfigurationReportModel> configModelList) {
this.configModelList = configModelList;
}
public String getFileName() {
SimpleDateFormat formatter = new SimpleDateFormat("ddMMyyyy_HHmmss");
fileName = "Config_Report_".concat(formatter.format(new Date()));
return fileName;
}
public void setMediumConfigModel(
ConfigurationReportDataModel mediumConfigModel) {
this.mediumConfigModel = mediumConfigModel;
}
public void setConfigModelList(
List<ConfigurationReportModel> configModelList) {
this.configModelList = configModelList;
}
public LazyDataModel<ConfigurationReportModel> getLazyFieldModel() {
log.info("##########getLazyFieldModel###########");
if(export) {
log.info("getLazyFieldModel::Will get Exported........");
lazyFieldModel = new ConfigurationReportDataModel(day, fromDate,
location, store, engineer, status, toDate, true);
lazyFieldModel.load(1, 1000000000, null, null, null);
}
return lazyFieldModel;
}
public void setLazyFieldModel(
LazyDataModel<ConfigurationReportModel> lazyFieldModel) {
this.lazyFieldModel = lazyFieldModel;
}
}
public class ConfigurationReportDataModel extends
LazyDataModel<ConfigurationReportModel> {
private List<ConfigurationReportModel> configReport;
private boolean export;
public ConfigurationReportDataModel() {
this.export = false;
}
public List<ConfigurationReportModel> load(int first, int pageSize,
String sortField, SortOrder sortOrder, Map<String, String> filters) {
UIClient client = new UIClient();
ReportData data = null;
// ///////////////////
if(export) {
log.info("Do Export....");
first = 1;
pageSize = 1000000000;
}
deviceList = new ArrayList<DeviceGlobal>();
// Retrieves data from Database with the number of record (page size)
data = client.generateFieldReport(first, pageSize,
Integer.parseInt(location), Integer.parseInt(store),
engineer, getTimeToBeginningOfDay(), getTimeToEndofDay(),
status);
log.info("Obtained data : " + data);
if (data != null) {
log.info("Got devices : " + data.getRecords().size());
deviceList = (ArrayList<DeviceGlobal>) data.getRecords();
// ///////////////////
int record = first + 1;
ConfigurationReportModel storeModel = null;
DeviceGlobal deviceGlobal = null;
configReport = new ArrayList<ConfigurationReportModel>();
for (Iterator<DeviceGlobal> iterator = deviceList.iterator(); iterator
.hasNext();) {
deviceGlobal = (DeviceGlobal) iterator.next();
storeModel = new ConfigurationReportModel(deviceGlobal,
record++);
configReport.add(storeModel);
}
log.info("Total Config Report : " + configReport.size());
// rowCount
int dataSize = data.getReportCount();
this.setRowCount(dataSize);
log.info("Report Count: " + data.getReportCount());
if(export) {
return configReport;
}
else {
// paginate
if (dataSize > pageSize) {
try {
return configReport;
} catch (IndexOutOfBoundsException e) {
return configReport;
}
} else {
return configReport;
}
}
} else {
log.info("Got no devices");
deviceList = new ArrayList<DeviceGlobal>();
configReport = new ArrayList<ConfigurationReportModel>();
this.setRowCount(0);
return configReport;
}
}
}
公共类配置ReportDataModel扩展
懒散数据模型{
私有列表报告；
私人布尔输出；
公共配置ReportDataModel（）{
this.export=false；
}
公共列表加载（int-first，int-pageSize，
字符串排序字段、排序器排序器、映射过滤器）{
UIClient=新UIClient（）；
ReportData数据=null；
// ///////////////////
国际单项体育联合会（出口）{
log.info（“执行导出…”）；
第一个=1；
页面大小=100000000；
}
deviceList=新的ArrayList（）；
//从数据库中检索具有记录数（页面大小）的数据
data=client.generateFieldReport（第一个，页面大小，
Integer.parseInt（位置），Integer.parseInt（存储），
工程师，getTimeToBeginingOfDay（），getTimeToEndofDay（），
地位）；
日志信息（“获得的数据：+数据”）；
如果（数据！=null）{
log.info（“获取设备：+data.getRecords（）.size（））；
deviceList=（ArrayList）data.getRecords（）；
// ///////////////////
int记录=first+1；
ConfigurationReportModel storeModel=null；
DeviceGlobal DeviceGlobal=null；
configReport=新的ArrayList（）；
for（迭代器迭代器=deviceList.Iterator（）；迭代器
.hasNext（）；）{
deviceGlobal=（deviceGlobal）迭代器.next（）；
storeModel=新配置报告模型（deviceGlobal，
记录++）；
configReport.add（storeModel）；
}
log.info（“总配置报告：+configReport.size（））；
//行数
int dataSize=data.getReportCount（）；
此.setRowCount（数据大小）；
log.info（“报告计数：+data.getReportCount（））；
国际单项体育联合会（出口）{
返回报告；
}
否则{
//分页
如果（数据大小>页面大小）{
试一试{
返回报告；
}catch（IndexOutOfBoundsException e）{
返回报告；
}
}否则{
返回报告；
}
}
}否则{
瞧