上次模仿poi例子写了个拼接XML导出Excel的例子，缺点很多，比如只能导出单sheet页,不支持合并单元格,不能设置行高列宽等，最近趁着有空，稍微修改了下，现在可以导出多个sheet页，支持合并单元格，支持设置行高和列宽，也有些小缺憾，比如，必须在写数据之前确定单元格列宽，注意，本方法不支持Excel 03，代码如下：
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.util.CellReference;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFDataFormat;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import com.bean.ProductBo;
/**
* 1,支持合并单元格
* 2,支持设置列宽
* 3,支持设置行高
* 4,支持多sheet页
* @author 53873039oycg
*/
public class WriteExcel07_ByXML {
public static void main(String[] args) throws Exception {
WriteExcel07_ByXML t = new WriteExcel07_ByXML();
List<String> headList = t.generateExcelHeader();
long start=System.currentTimeMillis();
t.generateExcel(headList, 110000, 50000, "sheet", "f:/saveFile/temp");
System.out.println("本次导出耗时:"+(System.currentTimeMillis()-start)+"毫秒");
}
public void generateExcel(List<String> headList, int totalSize,
int pageSize, String sheetName, String tempFilePath)
throws Exception {
XSSFWorkbook wb = new XSSFWorkbook();
Map<String, XSSFCellStyle> styles = createStyles(wb);
List<String> sheetRefList = new ArrayList<String>();
List<File> sheetFileList = new ArrayList<File>();
int totalSheet = totalSize / pageSize
+ (totalSize % pageSize == 0 ? 0 : 1);
for (int i = 1; i <= totalSheet; i++) {
XSSFSheet sheet = wb.createSheet(sheetName + i);
String sheetRef = sheet.getPackagePart().getPartName().getName();
sheetRefList.add(sheetRef.substring(1));
File tmp = new File(tempFilePath + "/" + (sheetName + i) + ".xml");
sheetFileList.add(tmp);
}
File tmpFile = new File(tempFilePath + "/template2.xlsx");
String resultFile = tempFilePath + "/" + System.currentTimeMillis()
+ ".xlsx";
FileOutputStream os = new FileOutputStream(tmpFile);
wb.write(os);
os.close();
for (int i = 0; i < totalSheet; i++) {
if (i == totalSheet - 1) {
pageSize = totalSize - (totalSheet - 1) * pageSize;
}
List<ProductBo> dataList = generateRandData(pageSize);
Writer fw = new OutputStreamWriter(new FileOutputStream(
sheetFileList.get(i)), "UTF-8");
generateExcelSheet(headList, dataList, fw, styles);
fw.close();
}
FileOutputStream out = new FileOutputStream(resultFile);
substituteAll(tmpFile, sheetFileList, sheetRefList, out);
out.close();
// 删除临时文件
tmpFile.delete();
for (File file : sheetFileList) {
file.delete();
}
}
private void generateExcelSheet(List<String> headList,
List<ProductBo> dataList, Writer out,
Map<String, XSSFCellStyle> styles) throws Exception {
XSSFCellStyle stringStyle = styles.get("cell_string");
XSSFCellStyle longStyle = styles.get("cell_long");
XSSFCellStyle doubleStyle = styles.get("cell_double");
XSSFCellStyle dateStyle = styles.get("cell_date");
Calendar calendar = Calendar.getInstance();
SpreadsheetWriter sw = new SpreadsheetWriter(out);
sw.beginWorkSheet();
sw.beginSetColWidth();
for (int i = 10, len = headList.size() - 2; i < len; i++) {
sw.setColWidthBeforeSheet(i, 13);
}
sw.setColWidthBeforeSheet(headList.size() - 1, 16);
sw.endSetColWidth();
sw.beginSheet();
// 表头
sw.insertRowWithheight(0, headList.size(), 25);
int styleIndex = ((XSSFCellStyle) styles.get("sheet_title")).getIndex();
for (int i = 0, len = headList.size(); i < len; i++) {
sw.createCell(i, headList.get(i), styleIndex);
}
sw.endWithheight();
int cellIndex = 0;
for (int rownum = 1, len = dataList.size() + 1; rownum < len; rownum++) {
cellIndex = 0;
sw.insertRow(rownum);
ProductBo bo = dataList.get(rownum - 1);
Class<?> clz = bo.getClass();
Field[] fields = clz.getDeclaredFields();
Object val = null;
Method fieldMethod = null;
for (int k = 0, len2 = fields.length; k < len2; k++) {
if ("serialVersionUID".equals(fields[k].getName())) {
continue;
}
fieldMethod = (Method) clz.getMethod("get"
+ getMethodName(fields[k].getName()));
fieldMethod.setAccessible(true);// 不进行安全检测
val = fieldMethod.invoke(bo);
String typeName = fields[k].getGenericType().toString();
if (typeName.endsWith("int") || typeName.endsWith("nteger")) {
sw.createCell(cellIndex, (Integer) val,
longStyle.getIndex());
} else if (typeName.endsWith("ong")) {
sw.createCell(cellIndex, (Long) val, longStyle.getIndex());
} else if (typeName.endsWith("ouble")) {
sw.createCell(cellIndex, (Double) val,
doubleStyle.getIndex());
} else if (typeName.endsWith("util.Date")) {
calendar.setTime((java.util.Date) val);
sw.createCell(cellIndex, calendar, dateStyle.getIndex());
} else if (typeName.endsWith("sql.Date")) {
calendar.setTime((java.sql.Date) val);
sw.createCell(cellIndex, calendar, dateStyle.getIndex());
} else {
sw.createCell(cellIndex, val.toString(),
stringStyle.getIndex());
}
cellIndex++;
}
sw.endRow();
if (rownum % 2000 == 0) {
out.flush();
}
}
sw.endSheet();
// 合并单元格
sw.beginMergerCell();
for (int i = 0, len = dataList.size() + 1; i < len; i++) {
sw.setMergeCell(i, 8, i, 9);
}
sw.endMergerCell();
sw.endWorkSheet();
}
// 表头
private List<String> generateExcelHeader() {
List<String> headList = new ArrayList<String>();
headList.add("编号");
headList.add("省");
headList.add("市");
headList.add("产品编码");
headList.add("产品品牌");
headList.add("产品型号");
headList.add("产品成本");
headList.add("优惠价");
headList.add("当日销售数量");
headList.add("当日销售小计");
headList.add("本周销售数量");
headList.add("本周销售小计");
headList.add("本月销售数量");
headList.add("本月销售小计");
headList.add("是否结算");
headList.add("统计时间");
return headList;
}
private List<ProductBo> generateRandData(int num) {
List<ProductBo> list = new ArrayList<ProductBo>(num * 3 / 2);
for (int i = 1; i < num + 1; i++) {
double price = new Random().nextInt(3000);
ProductBo pb = new ProductBo(10000 + i, "北京", "北京", 2000 + i,
"测试_S72" + i, "测试机型" + i, price,
new Random().nextInt(5000), new Random().nextInt(30), price
* new Random().nextInt(30),
new Random().nextInt(100), price
* new Random().nextInt(100),
new Random().nextInt(300), price
* new Random().nextInt(300), "是", new Date());
list.add(pb);
}
return list;
}
// 创建Excel样式
private static Map<String, XSSFCellStyle> createStyles(XSSFWorkbook wb) {
Map<String, XSSFCellStyle> stylesMap = new HashMap<String, XSSFCellStyle>();
XSSFDataFormat fmt = wb.createDataFormat();
XSSFCellStyle style = wb.createCellStyle();
style.setAlignment(XSSFCellStyle.ALIGN_CENTER);
style.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);
stylesMap.put("cell_string", style);
XSSFCellStyle style2 = wb.createCellStyle();
style2.setDataFormat(fmt.getFormat("0"));
style2.setAlignment(XSSFCellStyle.ALIGN_CENTER);
style2.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);
stylesMap.put("cell_long", style2);
XSSFCellStyle style3 = wb.createCellStyle();
style3.setDataFormat(fmt.getFormat("0.00"));
style3.setAlignment(XSSFCellStyle.ALIGN_CENTER);
style3.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);
stylesMap.put("cell_double", style3);
XSSFCellStyle style4 = wb.createCellStyle();
style4.setDataFormat(fmt.getFormat("yyyy-MM-dd"));
style4.setAlignment(XSSFCellStyle.ALIGN_CENTER);
style4.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);
stylesMap.put("cell_date", style4);
XSSFCellStyle style5 = wb.createCellStyle();
style5.setFillForegroundColor(IndexedColors.AQUA.getIndex());
style5.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);
style5.setAlignment(XSSFCellStyle.ALIGN_CENTER);
style5.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);
stylesMap.put("sheet_title", style5);
return stylesMap;
}
// 首字母大写
private String getMethodName(String fildeName) throws Exception {
byte[] items = fildeName.getBytes();
items[0] = (byte) ((char) items[0] - 'a' + 'A');
return new String(items);
}
// 打包压缩
private void substituteAll(File zipfile, List<File> tmpfileList,
List<String> entryList, OutputStream out) throws IOException {
ZipFile zip = new ZipFile(zipfile);
ZipOutputStream zos = new ZipOutputStream(out);
Enumeration en = zip.entries();
while (en.hasMoreElements()) {
ZipEntry ze = (ZipEntry) en.nextElement();
if (!entryList.contains(ze.getName())) {
zos.putNextEntry(new ZipEntry(ze.getName()));
InputStream is = zip.getInputStream(ze);
copyStream(is, zos);
is.close();
}
}
InputStream is = null;
for (int i = 0, len = entryList.size(); i < len; i++) {
zos.putNextEntry(new ZipEntry(entryList.get(i)));
is = new FileInputStream(tmpfileList.get(i));
copyStream(is, zos);
is.close();
}
zos.close();
zip.close();
}
private static void copyStream(InputStream in, OutputStream out)
throws IOException {
byte[] chunk = new byte[1024*10];
int count;
while ((count = in.read(chunk)) >= 0)
out.write(chunk, 0, count);
}
public int getTrueColumnNum(String address) {
address = address.replaceAll("[^a-zA-Z]", "").toLowerCase();
char[] adds = address.toCharArray();
int base = 1;
int total = 0;
for (int i = adds.length - 1; i >= 0; i--) {
total += (adds[i] - 'a' + 1) * base;
base = 26 * base;
}
return total;
}
public static class SpreadsheetWriter {
private final Writer _out;
private int _rownum;
public SpreadsheetWriter(Writer out) {
this._out = out;
}
public void beginWorkSheet() throws IOException {
this._out
.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?><worksheet xmlns=\"http://schemas.openxmlformats.org/spreadsheetml/2006/main\">");
}
public void beginSheet() throws IOException {
this._out.write("<sheetData>\n");
}
public void endSheet() throws IOException {
this._out.write("</sheetData>");
// 合并单元格
}
public void endWorkSheet() throws IOException {
this._out.write("</worksheet>");
}
//插入行 不带高度
public void insertRow(int rownum) throws IOException {
this._out.write("<row r=\"" + (rownum + 1) + "\">\n");
this._rownum = rownum;
}
public void endRow() throws IOException {
this._out.write("</row>\n");
}
//插入行且设置高度
public void insertRowWithheight(int rownum, int columnNum, double height)
throws IOException {
this._out.write("<row r=\"" + (rownum + 1) + "\" spans=\"1:"
+ columnNum + "\" ht=\"" + height
+ "\" customHeight=\"1\">\n");
this._rownum = rownum;
}
public void endWithheight() throws IOException {
this._out.write("</row>\n");
}
public void beginSetColWidth() throws IOException {
this._out.write("<cols>\n");
}
// 设置列宽 下标从0开始
public void setColWidthBeforeSheet(int columnIndex, double columnWidth)
throws IOException {
this._out.write("<col min=\"" + (columnIndex + 1) + "\" max=\""
+ (columnIndex + 1) + "\" width=\"" + columnWidth
+ "\" customWidth=\"1\"/>\n");
}
public void endSetColWidth() throws IOException {
this._out.write("</cols>\n");
}
public void beginMergerCell() throws IOException {
this._out.write("<mergeCells>\n");
}
public void endMergerCell() throws IOException {
this._out.write("</mergeCells>\n");
}
// 合并单元格 下标从0开始
public void setMergeCell(int beginColumn, int beginCell, int endColumn,
int endCell) throws IOException {
this._out.write("<mergeCell ref=\"" + getExcelName(beginCell + 1)
+ (beginColumn + 1) + ":" + getExcelName(endCell + 1)
+ (endColumn + 1) + "\"/>\n");// 列行:列行
}
public void createCell(int columnIndex, String value, int styleIndex)
throws IOException {
String ref = new CellReference(this._rownum, columnIndex)
.formatAsString();
this._out.write("<c r=\"" + ref + "\" t=\"inlineStr\"");
if (styleIndex != -1)
this._out.write(" s=\"" + styleIndex + "\"");
this._out.write(">");
this._out.write("<is><t>" + value + "</t></is>");
this._out.write("</c>");
}
public void createCell(int columnIndex, String value)
throws IOException {
createCell(columnIndex, value, -1);
}
public void createCell(int columnIndex, double value, int styleIndex)
throws IOException {
String ref = new CellReference(this._rownum, columnIndex)
.formatAsString();
this._out.write("<c r=\"" + ref + "\" t=\"n\"");
if (styleIndex != -1)
this._out.write(" s=\"" + styleIndex + "\"");
this._out.write(">");
this._out.write("<v>" + value + "</v>");
this._out.write("</c>");
}
public void createCell(int columnIndex, double value)
throws IOException {
createCell(columnIndex, value, -1);
}
public void createCell(int columnIndex, Calendar value, int styleIndex)
throws IOException {
createCell(columnIndex, DateUtil.getExcelDate(value, false),
styleIndex);
}
//10 进制转26进制
private String getExcelName(int i) {
char[] allChar = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".toCharArray();
StringBuilder sb = new StringBuilder();
while (i > 0) {
sb.append(allChar[i % 26 - 1]);
i /= 26;
}
return sb.reverse().toString();
}
}
}
Bean如下：
import java.util.Date;
public class ProductBo {
private long id;
private String provinceName;
private String cityName;
private long productNo;
private String brandName;
private String productName;
private double costPrice;
private double salePrice;
private long todayNum;
private double todayTotal;
private long weekNum;
private double weekTotal;
private long monthNum;
private double monthTotal;
private String isSale;
private Date doneDate;
public ProductBo(long id, String provinceName, String cityName,
long productNo, String brandName, String productName,
double costPrice, double salePrice, long todayNum,
double todayTotal, long weekNum, double weekTotal, long monthNum,
double monthTotal, String isSale, Date doneDate) {
super();
this.id = id;
this.provinceName = provinceName;
this.cityName = cityName;
this.productNo = productNo;
this.brandName = brandName;
this.productName = productName;
this.costPrice = costPrice;
this.salePrice = salePrice;
this.todayNum = todayNum;
this.todayTotal = todayTotal;
this.weekNum = weekNum;
this.weekTotal = weekTotal;
this.monthNum = monthNum;
this.monthTotal = monthTotal;
this.isSale = isSale;
this.doneDate = doneDate;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getProvinceName() {
return provinceName;
}
public void setProvinceName(String provinceName) {
this.provinceName = provinceName;
}
public String getCityName() {
return cityName;
}
public void setCityName(String cityName) {
this.cityName = cityName;
}
public long getProductNo() {
return productNo;
}
public void setProductNo(long productNo) {
this.productNo = productNo;
}
public String getBrandName() {
return brandName;
}
public void setBrandName(String brandName) {
this.brandName = brandName;
}
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
public double getCostPrice() {
return costPrice;
}
public void setCostPrice(double costPrice) {
this.costPrice = costPrice;
}
public double getSalePrice() {
return salePrice;
}
public void setSalePrice(double salePrice) {
this.salePrice = salePrice;
}
public long getTodayNum() {
return todayNum;
}
public void setTodayNum(long todayNum) {
this.todayNum = todayNum;
}
public double getTodayTotal() {
return todayTotal;
}
public void setTodayTotal(double todayTotal) {
this.todayTotal = todayTotal;
}
public long getWeekNum() {
return weekNum;
}
public void setWeekNum(long weekNum) {
this.weekNum = weekNum;
}
public double getWeekTotal() {
return weekTotal;
}
public void setWeekTotal(double weekTotal) {
this.weekTotal = weekTotal;
}
public long getMonthNum() {
return monthNum;
}
public void setMonthNum(long monthNum) {
this.monthNum = monthNum;
}
public double getMonthTotal() {
return monthTotal;
}
public void setMonthTotal(double monthTotal) {
this.monthTotal = monthTotal;
}
public String getIsSale() {
return isSale;
}
public void setIsSale(String isSale) {
this.isSale = isSale;
}
public Date getDoneDate() {
return doneDate;
}
public void setDoneDate(Date doneDate) {
this.doneDate = doneDate;
}
}
结果为：
如需更高级的功能，请自行编写代码，方法如下:
在Excel中设置自己想要的效果，把Excel后缀名修改为.zip,解压，在解压文件夹找到xl/worksheets文件夹，其中的sheet.xml就是Excel的数据。如下所示：
本文系原创，请尊重本人的劳动成果，转载请注明原处，谢谢。
全文完。
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