java－excel导出

java excel导出分为两种2003年的格式和2007年的格式。

2003年的xls一个sheet限制65536。

2007年的xlsx限制为1048576。

jxl导入2003

gradle jar包compile group: 'net.sourceforge.jexcelapi', name: 'jxl', version: '2.6.12'

public void writeExcelJXL() {
String path = "/macc/excel/";
String[] titles = {"用户活跃时间","频段","网点名称","下行速率(kbps)","MAC","上线时间","丢包率(‰)","信号强度","SN","时延(ms)","上下行速率(kbps)","上行速率(kbps)","用户ip","下行流量(byte)","上行流量(byte)","上下行流量(byte)"};
List<String> titleList = Arrays.asList(titles);
File file = new File(path);
if(!file.exists())
file.mkdirs();

// 以下开始输出到EXCEL
try {
/** **********创建工作簿************ */
OutputStream os = new FileOutputStream(path + "test.xls");
WritableWorkbook workbook = Workbook.createWorkbook(os);

/** **********创建工作表************ */

WritableSheet sheet = workbook.createSheet("Sheet1", 0);

/** **********设置纵横打印（默认为纵打）、打印纸***************** */
jxl.SheetSettings sheetset = sheet.getSettings();
sheetset.setProtected(false);

/** ************设置单元格字体************** */
WritableFont NormalFont = new WritableFont(WritableFont.ARIAL, 10);

/** ************以下设置三种单元格样式，灵活备用************ */
// 用于标题居中
WritableCellFormat wcf_center = new WritableCellFormat(NormalFont);
wcf_center.setBorder(Border.NONE, BorderLineStyle.THIN); // 线条
wcf_center.setVerticalAlignment(VerticalAlignment.CENTRE); // 文字垂直对齐
wcf_center.setAlignment(Alignment.CENTRE); // 文字水平对齐
wcf_center.setWrap(false); // 文字是否换行

/** ***************以下是EXCEL第一行列标题********************* */
for (int i = 0; i < titleList.size(); i++) {
sheet.addCell(new Label(i, 0,titleList.get(i),wcf_center));
}
/** ***************以下是EXCEL正文数据********************* */
int i=1;
List<CurrentUser> listContent = mongo.findAll(CurrentUser.class);
for(CurrentUser obj:listContent){
for (int j = 0; j < titleList.size(); j++) {
Object va = obj.getMac();
if(va != null)
sheet.addCell(new Label(j, i,va.toString(),wcf_center));
}
i++;
}
/** **********将以上缓存中的内容写到EXCEL文件中******** */
workbook.write();
/** *********关闭文件************* */
workbook.close();
System.out.println("finished");
} catch (Exception e) {
e.printStackTrace();
}
}

poi导入2007

compile group: 'org.apache.poi', name: 'poi', version: '3.14'

compile group: 'org.apache.poi', name: 'poi-ooxml', version: '3.14'

private void create2007Excel() {
String path = "/macc/excel/";
String[] titles = {"用户活跃时间","频段","网点名称","下行速率(kbps)","MAC","上线时间","丢包率(‰)","信号强度","SN","时延(ms)","上下行速率(kbps)","上行速率(kbps)","用户ip","下行流量(byte)","上行流量(byte)","上下行流量(byte)"};
List<String> titleList = Arrays.asList(titles);
File file = new File(path);
if(!file.exists())
file.mkdirs();
XSSFWorkbook workbook = new XSSFWorkbook();
try (OutputStream os = new FileOutputStream(path + "test.xlsx")) {
/** **********创建工作簿************ */
XSSFSheet sheet = workbook.createSheet();
/** ***************以下是EXCEL第一行列标题********************* */
XSSFRow titleRow = sheet.createRow(0);
for (int i = 0; i < titleList.size(); i++) {
XSSFCell cell = titleRow.createCell(i);
cell.setCellValue(titleList.get(i));
}
/** ***************以下是EXCEL正文数据********************* */
int i=1;
List<CurrentUser> listContent = mongo.findAll(CurrentUser.class);
int rowNum = 1;
for(CurrentUser obj:listContent){
XSSFRow row = sheet.createRow(rowNum);
rowNum ++;
for (int j = 0; j < titleList.size(); j++) {
Object va = obj.getMac();
if(va != null)
row.createCell(j).setCellValue(va.toString());
}
i++;
}
workbook.write(os);
} catch (Exception e) {
e.printStackTrace();
}

System.out.println("创建成功 office 2007 excel");
}