Java SpringMVC项目导出excel多种类对应工具类整理（util）

上一章介绍如何导入excel进系统处理成MAP集合（详情请看上提供的链接），这次我又整理了一下如何快速导出excel的工具。

1.导出无表头excel
文件单个工作表(sheet)，【fileName是标题名，titleList是列名，list就是列的内容了】

/**
* 导出无表头excel 文件单个工作表(sheet)
*
* @param fileName
* @param titleList
* @param list
* @param response
*/
public static void exportNoHeadExcel(String fileName, String[] titleList,
List list, HttpServletResponse response) {
SimpleDateFormat df = new java.text.SimpleDateFormat("yyyyMMdd");
String todayStr = df.format(new Date());
OutputStream os = null;
try {
os = response.getOutputStream();
String localFileName = fileName;
fileName = java.net.URLEncoder.encode(fileName, "UTF-8");// 处理中文文件名的问题
fileName = new String(fileName.getBytes("UTF-8"), "GBK");// 处理中文文件名的问题
response.setContentType("application/vnd.ms-excel;");
response.setHeader("Content-disposition", "attachment; filename=\""
+ fileName + "_" + todayStr + ".xls\"");
// 开始写入excel
// 字段字体
jxl.write.WritableFont wfc1 = new jxl.write.WritableFont(
WritableFont.COURIER, 10, WritableFont.NO_BOLD, true);
jxl.write.WritableCellFormat wcfFC1 = new jxl.write.WritableCellFormat(
wfc1);
wcfFC1.setAlignment(jxl.format.Alignment.CENTRE);
wcfFC1.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
// 结果字体
jxl.write.WritableCellFormat wcfFC2 = new jxl.write.WritableCellFormat();
wcfFC2.setAlignment(jxl.format.Alignment.CENTRE);
wcfFC2.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
WritableWorkbook wbook = Workbook.createWorkbook(os);
// 写sheet名称
WritableSheet wsheet = wbook.createSheet(localFileName, 0);
for (int m = 0; m < titleList.length; m++) {
wsheet.setColumnView(m, 30);
}
// 加入字段名
for (int n = 0; n < titleList.length; n++) {
wsheet.addCell(new jxl.write.Label(n, 0, titleList
, wcfFC1));
}
// 写入流中
int row = 0;
for (int r = 0; r < list.size(); r++) {
Object[] obj = (Object[]) list.get(r);
for (int x = 0; x < titleList.length; x++) {
wsheet.addCell(new jxl.write.Label(x, row + 1,
obj[x] == null ? " " : obj[x].toString(), wcfFC1));
}
row++;
if (row % 60000 == 0) {
row = 0;
// 写sheet名称
wsheet = wbook.createSheet(localFileName, 0);
for (int m = 0; m < titleList.length; m++) {
wsheet.setColumnView(m, 30);
}
// 加入字段名
for (int n = 0; n < titleList.length; n++) {
wsheet.addCell(new jxl.write.Label(n, 0, titleList
,
wcfFC1));
}
}
}
wbook.write();
wbook.close();
os.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (os == null) {
Log.info("os is null");
} else {
try {
os.close();
os = null;
} catch (IOException e) {
e.printStackTrace();
}
}
}
}

2.首先导出无表头excel 文件带多个工作表(sheet)，【sheetList存放的就是Map包含fileName是标题名，titleList是列名，list就是列的内容】

/**
* 导出无表头excel文件
*
* @param fileName
* @param titleList
* @param list
* @param response
*/
public static void exportNoHeadExcel(List<Map<String,Object>> sheetList, HttpServletResponse response) {
SimpleDateFormat df = new java.text.SimpleDateFormat("yyyyMMdd");
String todayStr = df.format(new Date());
OutputStream os = null;
try {
os = response.getOutputStream();
WritableWorkbook wbook = Workbook.createWorkbook(os);
for(int i=0;i<sheetList.size();i++){
Map<String,Object> map=sheetList.get(i);
String fileName=(String) map.get("fileName");
String[] titleList=(String[]) map.get("titleList");
List list=(List) map.get("list");
String localFileName = fileName;
fileName = java.net.URLEncoder.encode(fileName, "UTF-8");// 处理中文文件名的问题
fileName = new String(fileName.getBytes("UTF-8"), "GBK");// 处理中文文件名的问题
response.setContentType("application/vnd.ms-excel;");
response.setHeader("Content-disposition", "attachment; filename=\""
+ fileName + "_" + todayStr + ".xls\"");
// 开始写入excel
// 字段字体
jxl.write.WritableFont wfc1 = new jxl.write.WritableFont(
WritableFont.COURIER, 10, WritableFont.NO_BOLD, true);
jxl.write.WritableCellFormat wcfFC1 = new jxl.write.WritableCellFormat(
wfc1);
wcfFC1.setAlignment(jxl.format.Alignment.CENTRE);
wcfFC1.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
// 结果字体
jxl.write.WritableCellFormat wcfFC2 = new jxl.write.WritableCellFormat();
wcfFC2.setAlignment(jxl.format.Alignment.CENTRE);
wcfFC2.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
// 写sheet名称
WritableSheet wsheet = wbook.createSheet(localFileName,i);
for (int m = 0; m < titleList.length; m++) {
wsheet.setColumnView(m, 30);
}
// 加入字段名
for (int n = 0; n < titleList.length; n++) {
wsheet.addCell(new jxl.write.Label(n, 0, titleList
, wcfFC1));
}
// 写入流中
int row = 0;
for (int r = 0; r < list.size(); r++) {
Object[] obj = (Object[]) list.get(r);
for (int x = 0; x < titleList.length; x++) {
wsheet.addCell(new jxl.write.Label(x, row + 1,
obj[x] == null ? " " : obj[x].toString(), wcfFC1));
}
row++;
if (row % 60000 == 0) {
row = 0;
// 写sheet名称
wsheet = wbook.createSheet(localFileName, 0);
for (int m = 0; m < titleList.length; m++) {
wsheet.setColumnView(m, 30);
}
// 加入字段名
for (int n = 0; n < titleList.length; n++) {
wsheet.addCell(new jxl.write.Label(n, 0, titleList
,
wcfFC1));
}
}
}
}
wbook.write();
wbook.close();
os.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (os == null) {
Log.info("os is null");
} else {
try {
os.close();
os = null;
} catch (IOException e) {
e.printStackTrace();
}
}
}
}

3.导出excel文件带标题【fileName是标题名，titleList是列名，list就是列的内容了】

/**
* 导出excel 文件  带标题
*
* @param fileName
* @param titleList
* @param list
* @param response
*/
public static void exportWithHeadExcel(String fileName, String[] titleList,
List list, HttpServletResponse response) {
Date now = new Date();
SimpleDateFormat dateformat = new java.text.SimpleDateFormat(
"yyyy年MM月dd日HH时mm分");
SimpleDateFormat df = new java.text.SimpleDateFormat("yyyyMMdd");
String todayStr = df.format(new Date());
String today = dateformat.format(now);
OutputStream os = null;
try {
os = response.getOutputStream();
String localFileName = fileName;
fileName = java.net.URLEncoder.encode(fileName, "UTF-8");// 处理中文文件名的问题
fileName = new String(fileName.getBytes("UTF-8"), "GBK");// 处理中文文件名的问题
response.setContentType("application/vnd.ms-excel;");
response.setHeader("Content-disposition", "attachment; filename=\""
+ fileName + "_" + todayStr + ".xls\"");
// 开始写入excel
// 加标题
// 标题字体
jxl.write.WritableFont wfc = new jxl.write.WritableFont(
WritableFont.COURIER, 18, WritableFont.NO_BOLD, false);
jxl.write.WritableCellFormat wcfFC = new jxl.write.WritableCellFormat(
wfc);
wcfFC.setAlignment(jxl.format.Alignment.CENTRE);
wcfFC.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
// 字段字体
jxl.write.WritableFont wfc1 = new jxl.write.WritableFont(
WritableFont.COURIER, 10, WritableFont.NO_BOLD, false);
jxl.write.WritableCellFormat wcfFC1 = new jxl.write.WritableCellFormat(
wfc1);
wcfFC1.setAlignment(jxl.format.Alignment.CENTRE);
wcfFC1.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
// 结果字体
jxl.write.WritableCellFormat wcfFC2 = new jxl.write.WritableCellFormat();
wcfFC2.setAlignment(jxl.format.Alignment.CENTRE);
wcfFC2.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
WritableWorkbook wbook = Workbook.createWorkbook(os);
// 写sheet名称
WritableSheet wsheet = wbook.createSheet(localFileName, 0);
int i = 3;
for (int m = 0; m < titleList.length; m++) {
wsheet.setColumnView(m, 30);
}
// 加入字段名
for (int n = 0; n < titleList.length; n++) {
wsheet.addCell(new jxl.write.Label(n, 3, titleList
, wcfFC1));
}
// 加入标题
wsheet.mergeCells(0, 0, i - 1, 0);
wsheet.addCell(new Label(0, 0, localFileName, wcfFC));
// 加入打印时间
wsheet.addCell(new Label(i - 2, 1, "打印日期:"));
wsheet.addCell(new Label(i - 1, 1, today));
// 写入流中
int row = 0;
for (int r = 0; r < list.size(); r++) {
Object[] obj = (Object[]) list.get(r);
for (int x = 0; x < titleList.length; x++) {
wsheet.addCell(new jxl.write.Label(x, row + 4,
obj[x] == null ? " " : obj[x].toString(), wcfFC1));
}
row++;
if (row % 60000 == 0) {
row = 0;
// 写sheet名称
wsheet = wbook.createSheet(localFileName, 0);
i = 3;
for (int m = 0; m < titleList.length; m++) {
wsheet.setColumnView(m, 30);
}
// 加入字段名
for (int n = 0; n < titleList.length; n++) {
wsheet.addCell(new jxl.write.Label(n, 3, titleList
,
wcfFC1));
}
// 加入标题
wsheet.mergeCells(0, 0, i - 1, 0);
wsheet.addCell(new Label(0, 0, localFileName, wcfFC));
// 加入打印时间
wsheet.addCell(new Label(i - 2, 1, "打印日期:"));
wsheet.addCell(new Label(i - 1, 1, today));
}
}
wbook.write();
wbook.close();
os.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (os == null) {
Log.info("os is null");
} else {
try {
os.close();
os = null;
} catch (IOException e) {
e.printStackTrace();
}
}
}
}

目前大概整理了这3个，以后用到还会整理更新，今天就先到在这里吧..待续...

....谢谢阅读!