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java - 如何创建动态记录行以使用列表创建 xls 文件

转载 作者:塔克拉玛干 更新时间:2023-11-03 04:22:16 28 4
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从数据库中获取记录后,我在一些列表中添加了数据,并为它们设置了一些 session 变量,以便我可以通过使用 session 的 get(key) 方法以另一种方法访问,我成功地这样做了。现在我想要的是我想通过在行中设置此列表值来创建动态记录,但我无法这样做。它创建文件但没有显示记录。下面是我的代码:

package com.ca.actions;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.struts2.dispatcher.SessionMap;
import org.apache.struts2.interceptor.SessionAware;

import com.ca.database.Database;
import com.ca.pojo.Event;
import com.itextpdf.text.Document;
import com.itextpdf.text.Element;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.Preparable;

public class DataForGeneralReportsAction extends ActionSupport implements
Preparable, SessionAware {
private List<String> eventsGeneral = new ArrayList<String>();
private List<String> companiesGeneral = new ArrayList<String>();
private SessionMap<String, Object> sessionMapGeneral;
List<String> eventIdList = new ArrayList<String>();
List<String> eventNameList = new ArrayList<String>();
List<String> eventVenueList = new ArrayList<String>();
List<String> eventTimeList = new ArrayList<String>();
List<String> companyNameList = new ArrayList<String>();
List<String> totalAmountList = new ArrayList<String>();
List<String> receivedAmountList = new ArrayList<String>();
List<String> balanceAmountList = new ArrayList<String>();
List<String> eventTdsList = new ArrayList<String>();
List<String> paymentDateList = new ArrayList<String>();
List<String> chequeDdList = new ArrayList<String>();

private String eventGeneral = null;
private String companyGeneral = null;
List<Event> dataForGeneralReports;

public List<String> getEventIdList() {
return eventIdList;
}

public void setEventIdList(List<String> eventIdList) {
this.eventIdList = eventIdList;
}

public List<String> getEventNameList() {
return eventNameList;
}

public void setEventNameList(List<String> eventNameList) {
this.eventNameList = eventNameList;
}

public List<String> getEventVenueList() {
return eventVenueList;
}

public void setEventVenueList(List<String> eventVenueList) {
this.eventVenueList = eventVenueList;
}

public List<String> getEventTimeList() {
return eventTimeList;
}

public void setEventTimeList(List<String> eventTimeList) {
this.eventTimeList = eventTimeList;
}

public List<String> getCompanyNameList() {
return companyNameList;
}

public void setCompanyNameList(List<String> companyNameList) {
this.companyNameList = companyNameList;
}

public List<String> getTotalAmountList() {
return totalAmountList;
}

public void setTotalAmountList(List<String> totalAmountList) {
this.totalAmountList = totalAmountList;
}

public List<String> getReceivedAmountList() {
return receivedAmountList;
}

public void setReceivedAmountList(List<String> receivedAmountList) {
this.receivedAmountList = receivedAmountList;
}

public List<String> getBalanceAmountList() {
return balanceAmountList;
}

public void setBalanceAmountList(List<String> balanceAmountList) {
this.balanceAmountList = balanceAmountList;
}

public List<String> getEventTdsList() {
return eventTdsList;
}

public void setEventTdsList(List<String> eventTdsList) {
this.eventTdsList = eventTdsList;
}

public List<String> getPaymentDateList() {
return paymentDateList;
}

public void setPaymentDateList(List<String> paymentDateList) {
this.paymentDateList = paymentDateList;
}

public List<String> getChequeDdList() {
return chequeDdList;
}

public void setChequeDdList(List<String> chequeDdList) {
this.chequeDdList = chequeDdList;
}

public SessionMap<String, Object> getSessionMapGeneral() {
return sessionMapGeneral;
}

public void setSessionMapGeneral(
SessionMap<String, Object> sessionMapGeneral) {
this.sessionMapGeneral = sessionMapGeneral;
}

public String getEventGeneral() {
return eventGeneral;
}

public void setEventGeneral(String eventGeneral) {
this.eventGeneral = eventGeneral;
}

public String getCompanyGeneral() {
return companyGeneral;
}

public void setCompanyGeneral(String companyGeneral) {
this.companyGeneral = companyGeneral;
}

public List<Event> getDataForGeneralReports() {
return dataForGeneralReports;
}

public void setDataForGeneralReports(List<Event> dataForGeneralReports) {
this.dataForGeneralReports = dataForGeneralReports;
}

public List<String> getEventsGeneral() {
return eventsGeneral;
}

public void setEventsGeneral(List<String> eventsGeneral) {
this.eventsGeneral = eventsGeneral;
}

public List<String> getCompaniesGeneral() {
return companiesGeneral;
}

public void setCompaniesGeneral(List<String> companiesGeneral) {
this.companiesGeneral = companiesGeneral;
}

public DataForGeneralReportsAction() {
// TODO Auto-generated constructor stub
}

@Override
public void prepare() throws Exception {
// TODO Auto-generated method stub
Connection con = null;
try {
con = new Database().Get_Connection();

// load companies
PreparedStatement ps = con
.prepareStatement("SELECT DISTINCT company_name FROM event");
ResultSet rs = ps.executeQuery();
while (rs.next()) {
companiesGeneral.add(rs.getString("company_name"));
}

// load events
ps = con.prepareStatement("SELECT DISTINCT event_name FROM event");
rs = ps.executeQuery();
while (rs.next()) {
eventsGeneral.add(rs.getString("event_name"));
}

} catch (Exception e) {
e.printStackTrace();
} finally {
con.close();
}

}

@Override
public String execute() throws Exception {

Connection con = null;
try {
con = new Database().Get_Connection();

// load the table. The first time the table is loaded completely
String sql = "SELECT EVENT_ID, EVENT_NAME, COMPANY_NAME,EVENT_VENUE,TOTAL_AMOUNT,RECEIVED_AMOUNT,EVENT_TDS,BALANCE_AMOUNT,CHEQUE_DD_NO,"
+ "date_format(PAYMENT_DATE,'%d/%m/%Y') as dateAsPayment,EVENT_TIME "
+ "FROM event";
String where = "";

// if instead this action has been called from the JSP page,
// the result is filtered on event and company:
if (eventGeneral != null && companyGeneral != null) {
where = " WHERE event_name = ? AND company_name = ?";
}

// load companies
PreparedStatement ps = con.prepareStatement(sql + where);
if (where.length() > 0) {
ps.setString(1, eventGeneral);
ps.setString(2, companyGeneral);
}
dataForGeneralReports = new ArrayList<Event>();
ResultSet rs = ps.executeQuery();
int i, j = 0;
while (rs.next()) {

dataForGeneralReports.add(new Event(rs.getString("EVENT_ID"),
rs.getString("EVENT_NAME"), rs
.getString("COMPANY_NAME"), rs
.getString("EVENT_VENUE"), rs
.getString("EVENT_TIME"), rs
.getString("TOTAL_AMOUNT"), rs
.getString("RECEIVED_AMOUNT"), rs
.getString("CHEQUE_DD_NO"), rs
.getString("dateAsPayment"), rs
.getString("BALANCE_AMOUNT"), rs
.getString("EVENT_TDS")));

eventIdList.add(rs.getString("EVENT_ID"));
eventNameList.add(rs.getString("EVENT_NAME"));
companyNameList.add(rs.getString("COMPANY_NAME"));
eventVenueList.add(rs.getString("EVENT_VENUE"));
eventTimeList.add(rs.getString("EVENT_TIME"));
totalAmountList.add(rs.getString("TOTAL_AMOUNT"));
receivedAmountList.add(rs.getString("RECEIVED_AMOUNT"));
chequeDdList.add(rs.getString("CHEQUE_DD_NO"));
paymentDateList.add(rs.getString("dateAsPayment"));
eventTdsList.add(rs.getString("EVENT_TDS"));
balanceAmountList.add(rs.getString("BALANCE_AMOUNT"));

}
sessionMapGeneral.put("eventIdPdf", eventIdList);
sessionMapGeneral.put("eventNamePdf", eventNameList);
sessionMapGeneral.put("companyNamePdf", companyNameList);
sessionMapGeneral.put("eventVenuePdf", eventVenueList);
sessionMapGeneral.put("eventTimePdf", eventTimeList);
sessionMapGeneral.put("totalAmountPdf", totalAmountList);
sessionMapGeneral.put("receivedAmountPdf", receivedAmountList);
sessionMapGeneral.put("chequeDdPdf", chequeDdList);
sessionMapGeneral.put("paymentDatePdf", paymentDateList);
sessionMapGeneral.put("eventTdsPdf", eventTdsList);
sessionMapGeneral.put("balanceAmountPdf", balanceAmountList);

} catch (Exception e) {
e.printStackTrace();
} finally {
con.close();
}

return SUCCESS;

}

public String generatePdfGeneral() throws Exception {

System.out.println(sessionMapGeneral.get("eventIdPdf"));
Document document = new Document(PageSize.A4_LANDSCAPE, 50, 50, 50, 50);
float[] columnWidths = { 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 };

PdfWriter writer = PdfWriter.getInstance(document,
new FileOutputStream("D:\\GeneralReports.pdf"));
PdfPTable table = new PdfPTable(11);
table.setSpacingBefore(25);
table.setWidthPercentage(100);
table.setSpacingAfter(25);
table.setWidths(columnWidths);
PdfPCell c1 = new PdfPCell(new Phrase("Event ID "));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);

c1 = new PdfPCell(new Phrase("Event Name "));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);

c1 = new PdfPCell(new Phrase("Event Time"));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);

c1 = new PdfPCell(new Phrase("Event Venue"));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);
c1 = new PdfPCell(new Phrase("Company Name"));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);
c1 = new PdfPCell(new Phrase("Total Amount"));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);
c1 = new PdfPCell(new Phrase("Received Amount"));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);
c1 = new PdfPCell(new Phrase("Cheque/DD Number"));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);
c1 = new PdfPCell(new Phrase("Payment Date"));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);
c1 = new PdfPCell(new Phrase("Event TDS"));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);
c1 = new PdfPCell(new Phrase("Balance Amount"));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);

table.setHeaderRows(1);
PdfPCell cell = new PdfPCell();
List<String> list = (List<String>) sessionMapGeneral.get("eventIdPdf");
for (String item : list) {
cell.addElement(new Paragraph(item));
}
PdfPCell cell1 = new PdfPCell();
List<String> list1 = (List<String>) sessionMapGeneral
.get("eventNamePdf");
for (String item : list1) {
cell1.addElement(new Paragraph(item));
}
table.addCell(cell1);
PdfPCell cell2 = new PdfPCell();
List<String> list2 = (List<String>) sessionMapGeneral
.get("eventTimePdf");
for (String item : list2) {
cell2.addElement(new Paragraph(item));
}
table.addCell(cell2);
PdfPCell cell3 = new PdfPCell();
List<String> list3 = (List<String>) sessionMapGeneral
.get("eventVenuePdf");
for (String item : list1) {
cell3.addElement(new Paragraph(item));
}

table.addCell(cell3);
PdfPCell cell4 = new PdfPCell();
List<String> list4 = (List<String>) sessionMapGeneral.get("eventIdPdf");
for (String item : list4) {
cell4.addElement(new Paragraph(item));
}

table.addCell(cell4);
PdfPCell cell5 = new PdfPCell();
List<String> list5 = (List<String>) sessionMapGeneral
.get("companyNamePdf");
for (String item : list5) {
cell5.addElement(new Paragraph(item));
}

table.addCell(cell5);
PdfPCell cell6 = new PdfPCell();
List<String> list6 = (List<String>) sessionMapGeneral
.get("totalAmountPdf");
for (String item : list6) {
cell6.addElement(new Paragraph(item));
}

table.addCell(cell6);
PdfPCell cell7 = new PdfPCell();
List<String> list7 = (List<String>) sessionMapGeneral
.get("receivedAmountPdf");
for (String item : list7) {
cell7.addElement(new Paragraph(item));
}

table.addCell(cell7);
PdfPCell cell8 = new PdfPCell();
List<String> list8 = (List<String>) sessionMapGeneral
.get("chequeDdPdf");
for (String item : list8) {
cell8.addElement(new Paragraph(item));
}

table.addCell(cell8);
PdfPCell cell9 = new PdfPCell();
List<String> list9 = (List<String>) sessionMapGeneral
.get("paymentDatePdf");
for (String item : list9) {
cell9.addElement(new Paragraph(item));
}

table.addCell(cell9);
PdfPCell cell10 = new PdfPCell();
List<String> list10 = (List<String>) sessionMapGeneral
.get("eventTdsPdf");
for (String item : list10) {
cell10.addElement(new Paragraph(item));
}

table.addCell(cell10);
PdfPCell cell11 = new PdfPCell();
List<String> list11 = (List<String>) sessionMapGeneral
.get("balanceAmountPdf");
for (String item : list11) {
cell11.addElement(new Paragraph(item));
}

table.addCell(cell11);

document.open();
document.add(table);
document.close();
return "success";

}

public String generateGeneralXls() throws Exception {
try {
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.createSheet("FirstSheet");
HSSFRow rowhead = sheet.createRow((short) 0);
rowhead.createCell(0).setCellValue("Event ID");
rowhead.createCell(1).setCellValue("Event Name");
rowhead.createCell(2).setCellValue("Event Time");
rowhead.createCell(3).setCellValue("Event Venue");
rowhead.createCell(4).setCellValue("Company Name");
rowhead.createCell(5).setCellValue("Total Amount");
rowhead.createCell(6).setCellValue("Received Amount");
rowhead.createCell(7).setCellValue("Payment Date");
rowhead.createCell(8).setCellValue("Cheque/DD No.");
rowhead.createCell(9).setCellValue("Event TDS");
rowhead.createCell(10).setCellValue("Balance Amount");
FileOutputStream fileOut;

fileOut = new FileOutputStream("D:\\Samplmgjkm.xls");

// HSSFRow row1 = sheet.createRow((short) 1);
System.out.println(sessionMapGeneral.size());
for (int i = 1; i <= sessionMapGeneral.size(); i++) {
HSSFRow row1 = sheet.createRow((short) i);
row1.createCell(i-1).setCellValue(
sessionMapGeneral.get("eventIdPdf").toString());

row1.createCell(i).setCellValue(
sessionMapGeneral.get("eventNamePdf").toString());

}


/*
* row1.createCell(1).setCellValue(
* sessionMapGeneral.get("eventNamePdf").toString());
* row1.createCell(1).setCellValue(
* sessionMapGeneral.get("eventNamePdf").toString());
* row1.createCell(1).setCellValue(
* sessionMapGeneral.get("eventNamePdf").toString());
* row1.createCell(1).setCellValue(
* sessionMapGeneral.get("eventNamePdf").toString());
* row1.createCell(1).setCellValue(
* sessionMapGeneral.get("eventNamePdf").toString());
* row1.createCell(1).setCellValue(
* sessionMapGeneral.get("eventNamePdf").toString());
* row1.createCell(1).setCellValue(
* sessionMapGeneral.get("eventNamePdf").toString());
* row1.createCell(1).setCellValue(
* sessionMapGeneral.get("eventNamePdf").toString());
* row1.createCell(1).setCellValue(
* sessionMapGeneral.get("eventNamePdf").toString());
*/

workbook.write(fileOut);
fileOut.close();

} catch (Exception e) {
e.printStackTrace();
}
return "success";
}

@Override
public void setSession(Map<String, Object> map) {
// TODO Auto-generated method stub
sessionMapGeneral = (SessionMap) map;
}

}

我编辑了我的代码,在其中我得到了字符串形式的结果,但所有记录都显示在单个单元格中。我想要新单元格中的每条记录。我附上了它的外观图片。 enter image description here没有错误显示。请帮我解决我的问题。

最佳答案

试试这个:

FileOutputStream fileOut;
fileOut = new FileOutputStream("D:\\Samplmgjkm.xls");

int nextRow = 1;

while(rs.next()){
HSSFRow r = sheet.getRow(nextRow);
if (r == null) {
r = sheet.createRow(nextRow);
}

HSSFCell c = r.getCell(1, Row.CREATE_NULL_AS_BLANK);
c.setCellValue(rs.getString(1));

HSSFCell c2 = r.getCell(2, Row.CREATE_NULL_AS_BLANK);
c2.setCellValue(rs.getString(2));

nextRow++;
}

关于java - 如何创建动态记录行以使用列表创建 xls 文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37502950/

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