最近做数据导出为Excel，特地比较了一下JXL和POI的性能，顺便记录下二者的用法

先定义一下测试条件

public class TestCondition {

/**

* 生成的记录条数

*/

public static final int RECORD_COUNT = 21000;

/**

* 模板文件

*/

public static final String TEMPLATE_FILE = "E:/MyKernelPlatformWorkspace/Template/query_order.xls";

/**

* JXL生成文件位置

*/

public static final String JXL_TARGET_FILE_NAME = "E:/MyKernelPlatformWorkspace/Template/target/jxl_order.xls";

/**

* POI生成文件位置

*/

public static final String POI_TARGET_FILE_NAME = "E:/MyKernelPlatformWorkspace/Template/target/poi_order.xls";

/**

* JXL临时文件位置

*/

public static final String JXL_TEMP_DIR = "E:/MyKernelPlatformWorkspace/Template/temp";

}

然后在此测试条件下编写JXL和POI的测试类，首先是JXL的

public class JXLExcel {

/**

* 起始行

*/

private static final int start_row = 3;

private WorkbookSettings settings;

private File target;

public JXLExcel() {

this.settings = new WorkbookSettings();

//设定JXL在生成excel文件时使用临时文件

settings.setUseTemporaryFileDuringWrite(true);

settings.setTemporaryFileDuringWriteDirectory(new File(TestCondition.JXL_TEMP_DIR));

this.target = new File(TestCondition.JXL_TARGET_FILE_NAME);

}

public void execute() throws Exception {

// 读入模板文件

Workbook template = Workbook.getWorkbook(new File(TestCondition.TEMPLATE_FILE));

WritableWorkbook worbook = Workbook.createWorkbook(target, template, settings);

// 获取第一个sheet

WritableSheet sheet = worbook.getSheet(0);

Random random = new Random();

// 循环写入数据

for(int i = 0;i < TestCondition.RECORD_COUNT;i++) {

int row = i + start_row;

sheet.insertRow(row);

Label col1 = new Label(0, row, String.valueOf(i + 1));

Label col2 = new Label(1, row, String.valueOf(random.nextLong()));

Label col3 = new Label(2, row, String.valueOf(random.nextLong()));

Label col4 = new Label(3, row, "merchant" + (i +1));

jxl.write.Number col5 = new Number(4, row, random.nextDouble());

jxl.write.Number col6 = new Number(5, row, random.nextDouble());

jxl.write.Number col7 = new Number(6, row, random.nextDouble());

jxl.write.Number col8 = new Number(7, row, random.nextDouble());

Label col9 = new Label(8, row, String.valueOf(random.nextLong()));

Label col10 = new Label(9, row, "PAY");

Label col11 = new Label(10, row, "POS");

Label col12 = new Label(11, row, "2010-09-03 12:45:13");

Label col13 = new Label(12, row, "2010-09-09 12:45:13");

Label col14 = new Label(13, row, "interface" + (i + 1));

Label col15 = new Label(14, row, "18701001830");

Label col16 = new Label(15, row, "ccbc");

Label col17 = new Label(16, row, String.valueOf(random.nextLong()));

Label col18 = new Label(17, row, String.valueOf(random.nextLong()));

jxl.write.Number col19 = new Number(18, row, random.nextDouble());

jxl.write.Number col20 = new Number(19, row, random.nextDouble());

Label col21 = new Label(20, row, "payer" + (i + 1));

Label col22 = new Label(21, row, String.valueOf(random.nextLong()));

Label col23 = new Label(22, row, "192.168.1.1");

Label col24 = new Label(23, row, "192.168.1.1");

sheet.addCell(col1);

sheet.addCell(col2);

sheet.addCell(col3);

sheet.addCell(col4);

sheet.addCell(col5);

sheet.addCell(col6);

sheet.addCell(col7);

sheet.addCell(col8);

sheet.addCell(col9);

sheet.addCell(col10);

sheet.addCell(col11);

sheet.addCell(col12);

sheet.addCell(col13);

sheet.addCell(col14);

sheet.addCell(col15);

sheet.addCell(col16);

sheet.addCell(col17);

sheet.addCell(col18);

sheet.addCell(col19);

sheet.addCell(col20);

sheet.addCell(col21);

sheet.addCell(col22);

sheet.addCell(col23);

sheet.addCell(col24);

}

worbook.write();

worbook.close();

}

}

执行Main函数

public class JXLMain {

/**

* 描述：

* @param args

* @throws Exception

*/

public static void main(String[] args) throws Exception {

long jxlStart = System.currentTimeMillis();

JXLExcel jxl = new JXLExcel();

jxl.execute();

long jxlStop = System.currentTimeMillis();

System.out.println("jxl takes : " + (jxlStop - jxlStart)/1000 + " seconds.");

}

然后是POI的

public class POIExcel {

/**

* 起始行

*/

private static final int start_row = 3;

public void execute() throws Exception {

// 读入模板文件

InputStream is = new FileInputStream(TestCondition.TEMPLATE_FILE);

POIFSFileSystem poifsFileSystem = new POIFSFileSystem(is);

HSSFWorkbook workbook = new HSSFWorkbook(poifsFileSystem);

// 获取第一个sheet

HSSFSheet sheet = workbook.getSheetAt(0);

Random random = new Random();

// 将模板的最后两行移动

sheet.shiftRows(3, 4, TestCondition.RECORD_COUNT);

OutputStream os = new FileOutputStream(

TestCondition.POI_TARGET_FILE_NAME);

// 循环写入数据

for (int i = 0; i < TestCondition.RECORD_COUNT; i++) {

int rowNum = i + start_row;

HSSFRow row = sheet.createRow(rowNum);

HSSFCell cell1 = row.createCell(0);

cell1.setCellValue(i + 1);

HSSFCell cell2 = row.createCell(1);

cell2.setCellValue(String.valueOf(random.nextLong()));

HSSFCell cell3 = row.createCell(2);

cell3.setCellValue(String.valueOf(random.nextLong()));

HSSFCell cell4 = row.createCell(3);

cell4.setCellValue("merchant" + (i +1));

HSSFCell cell5 = row.createCell(4);

cell5.setCellValue(random.nextDouble());

HSSFCell cell6 = row.createCell(5);

cell6.setCellValue(random.nextDouble());

HSSFCell cell7 = row.createCell(6);

cell7.setCellValue(random.nextDouble());

HSSFCell cell8 = row.createCell(7);

cell8.setCellValue(random.nextDouble());

HSSFCell cell9 = row.createCell(8);

cell9.setCellValue(String.valueOf(random.nextLong()));

HSSFCell cell10 = row.createCell(9);

cell10.setCellValue("PAY");

HSSFCell cell11 = row.createCell(10);

cell11.setCellValue("POS");

HSSFCell cell12 = row.createCell(11);

cell12.setCellValue(new Date());

HSSFCell cell13 = row.createCell(12);

cell13.setCellValue(new Date());

HSSFCell cell14 = row.createCell(13);

cell14.setCellValue("interface" + (i + 1));

HSSFCell cell15 = row.createCell(14);

cell15.setCellValue("18701001830");

HSSFCell cell16 = row.createCell(15);

cell16.setCellValue("ccbc");

HSSFCell cell17 = row.createCell(16);

cell17.setCellValue(String.valueOf(random.nextLong()));

HSSFCell cell18 = row.createCell(17);

cell18.setCellValue(String.valueOf(random.nextLong()));

HSSFCell cell19 = row.createCell(18);

cell19.setCellValue(random.nextDouble());

HSSFCell cell20 = row.createCell(19);

cell20.setCellValue(random.nextDouble());

HSSFCell cell21 = row.createCell(20);

cell21.setCellValue("payer" + (i + 1));

HSSFCell cell22 = row.createCell(21);

cell22.setCellValue(String.valueOf(random.nextLong()));

HSSFCell cell23 = row.createCell(22);

cell23.setCellValue("192.168.1.1");

HSSFCell cell24 = row.createCell(23);

cell24.setCellValue("192.168.1.1");

}

workbook.write(os);

os.close();

}

执行Main函数

public class POIMain {

/**

* 描述：

* @param args

* @throws Exception

*/

public static void main(String[] args) throws Exception {

long jxlStart = System.currentTimeMillis();

POIExcel poi = new POIExcel();

poi.execute();

long jxlStop = System.currentTimeMillis();

System.out.println("poi takes : " + (jxlStop - jxlStart)/1000 + " seconds.");

}

}

经过测试发现，在默认的JVM内存下，24列数据，POI在15000行以上就会发生out of memory异常，而jxl到21000以上才会发生异常，jxl使用时急着开启使用临时文件，可以有效地提高导出性能。

另外POI支持excel2003和2007，而jxl只支持excel2003。

分享到：

2012-04-13 18:51

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评论

3 楼

18335864773

2017-06-06

使用POI、JXL直接生成Excel，很容易就造成内存溢出了。即使不溢出，由于代码执行耗时太久也会长时间阻塞web页面，导致web系统并发访问性能急剧下降。

一个PageOffice软件，本质上也是在客户端生成Excel表格的，但是这个产品提供的是服务器端的编程对象，接口很简单，调用起来比js舒服多了，通过对这个产品提供的服务器端Excel操作对象编程，客户端就能在用户需要Excel表格的时候实时生成，也同时解决了文件的在线预览和打印问题。PageOffice肯定是对Excel的接口做过深度优化的，填充上万行数据也能瞬间完成，还支持赋值公式、单元格样式和文本样式的设置，所以在此与大家分享一下，有兴趣可以去PageOffice的官网下载一个试用版测试。

2 楼

18335864773

2017-06-06

使用POI、JXL直接生成Excel，很容易就造成内存溢出了。即使不溢出，由于代码执行耗时太久也会长时间阻塞web页面，导致web系统并发访问性能急剧下降。

1 楼

安静听歌

2015-08-04

我想请问一下，jxl 开启临时文件怎么用啊，我的报：系统找不到指定的路径。我看过了的，temp文件我也试过手动创建，，，都是不行，，，