崩溃发生在Java虚拟机外部,在编辑excel文件时出现本机代码错误
我正在尝试使用崩溃发生在Java虚拟机外部,在编辑excel文件时出现本机代码错误,java,eclipse,excel,runtime-error,apache-poi,Java,Eclipse,Excel,Runtime Error,Apache Poi,我正在尝试使用apachepoi和OPCPackage编辑excel文件,但由于一些奇怪的原因,它对我不起作用。以下是代码片段: File file = new File(basePath, fileName); int currentColNum=0, currentRowNum=0; OPCPackage pkg = null; Workbook wb = null; if(file.exists()) pkg = OPCPackage.open(file); wb = ne
apachepoi
和OPCPackage
编辑excel文件,但由于一些奇怪的原因,它对我不起作用。以下是代码片段:
File file = new File(basePath, fileName);
int currentColNum=0, currentRowNum=0;
OPCPackage pkg = null;
Workbook wb = null;
if(file.exists())
pkg = OPCPackage.open(file);
wb = new XSSFWorkbook(pkg);
else
wb = new XSSFWorkbook();
Sheet sheet = wb.getSheet(sheetName);
if(sheet==null)
sheet = wb.createSheet(sheetName);
else
currentRowNum = lastWrittenRowCol.get(sheetName).getLeft();
for(Entry<?,?> entry : map.entrySet()) {
//some code. This code uses functions like sheet.createRow() etc.
}
FileOutputStream out = new FileOutputStream(file);
System.out.println("before write.out"); //Printed/
wb.write(out);
System.out.println("last statement"); //Not printed.
out.close();
if(pkg!=null)
pkg.close();
这是日志中的内存信息:
/proc/meminfo:
MemTotal: 5855708 kB
MemFree: 1413996 kB
Buffers: 815896 kB
Cached: 1939120 kB
SwapCached: 0 kB
Active: 2339452 kB
Inactive: 1512396 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 5855708 kB
LowFree: 1413872 kB
SwapTotal: 5140792 kB
SwapFree: 5140792 kB
Dirty: 5556 kB
Writeback: 0 kB
AnonPages: 1096860 kB
Mapped: 112944 kB
Slab: 520072 kB
PageTables: 39008 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 8068644 kB
Committed_AS: 2106544 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 51844 kB
VmallocChunk: 34359686179 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
Hugepagesize: 2048 kB
我正在使用Eclipse。程序使用参数
-Xms512m-Xmx2048m
运行。wb.write(out)有一些问题,因为该行之前的语句已打印,但下一行未打印。(我知道我应该使用调试器,但我不知道如何从构建系统将其插入eclipse中)。感谢您的帮助 当XSSF操纵开放XML格式时,编写它需要操纵存档(zip)。。jzlib中有bug
请检查此修复
我希望这能有所帮助 +1我最近也观察到了同样的情况。写入方法出错,并损坏了我的excel文件。@Sankumarsingh是的。我在这件事上浪费了太多时间。希望有人能帮上忙。纯Java代码不应该使JVM崩溃,所以看起来您遇到了JVM错误。你试过向Oracle报告吗?@Gagravarr没有。我不知道这可能是一个bug。@Gagravarr:我观察到在
opcpackage
和workbook factory
的情况下,崩溃发生了,而在fileInputStream
的情况下,崩溃工作正常。我在我的代码和Aman的代码中都观察到了同样的情况。我不知道为什么会这样。
/proc/meminfo:
MemTotal: 5855708 kB
MemFree: 1413996 kB
Buffers: 815896 kB
Cached: 1939120 kB
SwapCached: 0 kB
Active: 2339452 kB
Inactive: 1512396 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 5855708 kB
LowFree: 1413872 kB
SwapTotal: 5140792 kB
SwapFree: 5140792 kB
Dirty: 5556 kB
Writeback: 0 kB
AnonPages: 1096860 kB
Mapped: 112944 kB
Slab: 520072 kB
PageTables: 39008 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 8068644 kB
Committed_AS: 2106544 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 51844 kB
VmallocChunk: 34359686179 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
Hugepagesize: 2048 kB