public static InputStream workbookConvertorStream(SXSSFWorkbook workbook) {
    InputStream in = null;
        //临时缓冲区
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        //创建临时文件
        workbook.write(out);
        byte [] bookByteAry = out.toByteArray();
        in = new ByteArrayInputStream(bookByteAry);
    catch (Exception e){
        e.printStackTrace();
    return in;
                    public static InputStream workbookConvertorStream(SXSSFWorkbook workbook) {    InputStream in = null;    try{        //临时缓冲区        ByteArrayOutputStream out = new ByteArrayOutputStream();      ...
     * @param multipartFile multipartFile
     * @return InputStream
     * @throws IOException IOException
    public static InputStream parseInputStream(MultipartFile multip
				
package com.jd.ibdreport.service.approta;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.
InputStream is = new ByteArrayInputStream(HSSFWorkbook.getBytes());
获取输入流后上传服务器。文件是上传成功，但是文件下载后打开会提示文件已损坏。
正确的解决方法（红色涂改...
				
File test = new File("D:\\test.xlsx");
try {
  XSSFWorkbook wb = new XSSFWorkbook(new FileInputStream(test));
  SXSSFWorkbook workbook = new SXSSFWorkbook(wb);
  Sheet sheet = workbook.getSheetAt(0);
  for (int i = 0; i < 5; i++) {
    Row row = sheet.getRow(i);
    if(row==null){
      System.out.println(i+":null");
} catch (Exception e) {
  e.printStackTrace();
				
上传的excel2007文件,在用poi处理时通过new XSSFWorkbook(inputStream)出错java.lang.NoClassDefFoundError:
 org/apache/commons/collections4/ListValuedMap
可能是缺少collections4的jar
也可能是因为collections4的版本低于4.1
 引入4.1版本即可。

        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        workbook.write(bos);
        byte[] barray = bos.toByteArray();
        InputStream is = new ByteArrayI...
				
ZipOutputStream 转换为 InputStream 的方法：
1. 使用 ByteArrayOutputStream 将 ZipOutputStream 写入到内存中。
2. 将 ByteArrayOutputStream 转换为 ByteArrayInputStream。
3. 使用 ByteArrayInputStream 作为 InputStream 使用。
示例代码：
ZipOutputStream zipOutputStream = new ZipOutputStream(new FileOutputStream("test.zip"));
zipOutputStream.putNextEntry(new ZipEntry("test.txt"));
zipOutputStream.write("Hello World".getBytes());
zipOutputStream.closeEntry();
zipOutputStream.close();
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len;
FileInputStream fileInputStream = new FileInputStream("test.zip");
while ((len = fileInputStream.read(buffer)) > ) {
    byteArrayOutputStream.write(buffer, , len);
fileInputStream.close();
byteArrayOutputStream.close();
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArrayOutputStream.toByteArray());
// 使用 byteArrayInputStream 作为 InputStream 使用
            org.springframework.aop.AopInvocationException: Null return value from advice does not match primiti
            Java 字符串日期转换成另外一种格式
            Java 根据高德地图获取经纬度坐标