Java 内存外异常
我在运行进程时遇到堆空间错误。我的代码如下。请验证它并尽快给我解决方案Java 内存外异常,java,memory,apache-poi,core,Java,Memory,Apache Poi,Core,我在运行进程时遇到堆空间错误。我的代码如下。请验证它并尽快给我解决方案 public static void Read_File(String Filename) throws IOException { FileInputStream myInput = null; myInput = new FileInputStream(Filename); POIFSFileSystem myFileSystem = new POIFSFileSystem(my
public static void Read_File(String Filename)
throws IOException {
FileInputStream myInput = null;
myInput = new FileInputStream(Filename);
POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput);
HSSFWorkbook myWorkBook = new HSSFWorkbook(myFileSystem);
HSSFSheet mySheet = myWorkBook.getSheetAt(0);
int RowCount = 0;
for (Row row : mySheet) {
if (RowCount >= 1) {
Cell Eincell = row.getCell(0);
Cell Namecell = row.getCell(1);
Cell InCareofNamecell = row.getCell(2);
Cell Addresscell = row.getCell(3);
Cell Citycell = row.getCell(4);
Cell Statecell = row.getCell(5);
Cell ZipCodecell = row.getCell(6);
Cell GroupExemptionNumbercell = row.getCell(7);
Cell SubsectionCodecell = row.getCell(8);
Cell AffiliationCodecell = row.getCell(9);
Cell ClassificationCodecell = row.getCell(10);
Cell RulingDatecell = row.getCell(11);
Cell DeductibilityCodecell = row.getCell(12);
Cell FoundationCodcell = row.getCell(13);
Cell ActivityCodecell = row.getCell(14);
Cell OrganizationCodecell = row.getCell(15);
Cell ExemptOrganizationStatusCodecell = row.getCell(16);
Cell AdvancedRulingExpirationDatecell = row.getCell(17);
Cell TaxPeriodcell = row.getCell(18);
Cell AssetCodecell = row.getCell(19);
Cell IncomeCodecell = row.getCell(20);
Cell FilingRequirementCodecell = row.getCell(21);
Cell PFFilingRequirementCodecell = row.getCell(22);
Cell Blankcell = row.getCell(23);
Cell AccountingPeriodcell = row.getCell(24);
Cell AssetAmountcell = row.getCell(25);
Cell IncomeAmountcell = row.getCell(26);
Cell NegativeSigncell = row.getCell(27);
Cell Form90RevenueAmountcell = row.getCell(28);
Cell NegativeSign1cell = row.getCell(29);
Cell NTEECodecell = row.getCell(30);
Cell SortorSecondaryNamecell = row.getCell(31);
if (Eincell == null) {
Einvalue = 0;
} else {
try {
String ass = String.valueOf(Eincell.getStringCellValue());
Einvalue = Integer.parseInt(ass);
} catch (Exception ex) {
Einvalue = 0;
}
}
if (Namecell == null) {
namevalue = "0";
} else {
try {
namevalue = Namecell.getStringCellValue();
} catch (Exception ex1) {
namevalue = "0";
}
}
if (InCareofNamecell == null) {
incarevalue = "0";
} else {
try {
incarevalue = InCareofNamecell.getStringCellValue();
} catch (Exception ex1) {
incarevalue = "0";
}
}
if (Addresscell == null) {
addressvalue = "0";
} else {
try {
addressvalue = Addresscell.getStringCellValue();
} catch (Exception ex1) {
addressvalue = "0";
}
}
if (Citycell == null) {
cityvalue = "0";
} else {
try {
cityvalue = Citycell.getStringCellValue();
} catch (Exception ex1) {
cityvalue = "0";
}
}
if (Statecell == null) {
Statevalue = "0";
} else {
try {
Statevalue = Statecell.getStringCellValue();
} catch (Exception ex1) {
Statevalue = "0";
}
}
if (ZipCodecell == null) {
zipvalue = "0";
} else {
try {
zipvalue = ZipCodecell.getStringCellValue();
} catch (Exception ex1) {
zipvalue = "0";
}
}
if (GroupExemptionNumbercell == null) {
groupvalue = 0;
} else {
try {
groupvalue = (int) GroupExemptionNumbercell.getNumericCellValue();
} catch (Exception ex) {
groupvalue = 0;
}
}
if (SubsectionCodecell == null) {
SubsectionCodevalue = 0;
} else {
try {
SubsectionCodevalue = (int) SubsectionCodecell.getNumericCellValue();
} catch (Exception ex) {
SubsectionCodevalue = 0;
}
}
if (AffiliationCodecell == null) {
AffiliationCodevalue = 0;
} else {
try {
AffiliationCodevalue = (int) AffiliationCodecell.getNumericCellValue();
} catch (Exception ex) {
AffiliationCodevalue = 0;
}
}
if (ClassificationCodecell == null) {
ClassificationCodevalue = 0;
} else {
try {
ClassificationCodevalue = (int) ClassificationCodecell.getNumericCellValue();
} catch (Exception ex) {
ClassificationCodevalue = 0;
}
}
if (RulingDatecell == null) {
RulingDatevalue = 0;
} else {
try {
RulingDatevalue = (int) RulingDatecell.getNumericCellValue();
} catch (Exception ex) {
RulingDatevalue = 0;
}
}
if (DeductibilityCodecell == null) {
DeductibilityCodevalue = 0;
} else {
try {
DeductibilityCodevalue = (int) DeductibilityCodecell.getNumericCellValue();
} catch (Exception ex) {
DeductibilityCodevalue = 0;
}
}
if (FoundationCodcell == null) {
Foundationcodevalue = 0;
} else {
try {
Foundationcodevalue = (int) FoundationCodcell.getNumericCellValue();
} catch (Exception ex) {
Foundationcodevalue = 0;
}
}
if (ActivityCodecell == null) {
ActivityCodevalue = 0;
} else {
try {
ActivityCodevalue = (int) ActivityCodecell.getNumericCellValue();
} catch (Exception ex) {
ActivityCodevalue = 0;
}
}
if (OrganizationCodecell == null) {
OrganizationCodevalue = 0;
} else {
try {
OrganizationCodevalue = (int) OrganizationCodecell.getNumericCellValue();
} catch (Exception ex) {
OrganizationCodevalue = 0;
}
}
if (ExemptOrganizationStatusCodecell == null) {
ExemptOrganizationStatusCodevalue = 0;
} else {
try {
ExemptOrganizationStatusCodevalue = (int) ExemptOrganizationStatusCodecell.getNumericCellValue();
} catch (Exception ex) {
ExemptOrganizationStatusCodevalue = 0;
}
}
if (AdvancedRulingExpirationDatecell == null) {
AdvancedRulingExpirationDatevalue = 0;
} else {
try {
AdvancedRulingExpirationDatevalue = (int) AdvancedRulingExpirationDatecell.getNumericCellValue();
} catch (Exception ex) {
AdvancedRulingExpirationDatevalue = 0;
}
}
if (TaxPeriodcell == null) {
TaxPeriodvalue = 0;
} else {
try {
TaxPeriodvalue = (int) TaxPeriodcell.getNumericCellValue();
} catch (Exception ex) {
TaxPeriodvalue = 0;
}
}
if (AssetCodecell == null) {
AssetCodevalue = 0;
} else {
try {
AssetCodevalue = (int) AssetCodecell.getNumericCellValue();
} catch (Exception ex) {
AssetCodevalue = 0;
}
}
if (IncomeCodecell == null) {
IncomeCodevalue = 0;
} else {
try {
IncomeCodevalue = (int) IncomeCodecell.getNumericCellValue();
} catch (Exception ex) {
IncomeCodevalue = 0;
}
}
if (FilingRequirementCodecell == null) {
FilingRequirementCode = 0;
} else {
try {
FilingRequirementCode = (int) FilingRequirementCodecell.getNumericCellValue();
} catch (Exception ex) {
FilingRequirementCode = 0;
}
}
if (PFFilingRequirementCodecell == null) {
PFFilingRequirementCodevalue = 0;
} else {
try {
PFFilingRequirementCodevalue = (int) PFFilingRequirementCodecell.getNumericCellValue();
} catch (Exception ex) {
PFFilingRequirementCodevalue = 0;
}
}
try {
Blankvalue = Blankcell.getStringCellValue();
} catch (Exception ex) {
Blankvalue = "0";
}
try {
AccountingPeriodvalue = (int) AccountingPeriodcell.getNumericCellValue();
} catch (Exception ex) {
AccountingPeriodvalue = 0;
}
try {
AssetAmountvalue = AssetAmountcell.getNumericCellValue();
} catch (Exception ex) {
AssetAmountvalue = 0.0D;
}
try {
IncomeAmountvalue = IncomeAmountcell.getNumericCellValue();
} catch (Exception ex) {
IncomeAmountvalue = 0.0D;
}
try {
navigaresign = NegativeSigncell.getStringCellValue();
} catch (Exception ex) {
navigaresign = "0";
}
try {
Form990RevenueAmountvalue = Form90RevenueAmountcell.getNumericCellValue();
} catch (Exception ex) {
Form990RevenueAmountvalue = 0.0D;
}
try {
navigaresign1_value = NegativeSign1cell.getStringCellValue();
} catch (Exception ex) {
navigaresign1_value = "0";
}
try {
NTEE_Code_value = NTEECodecell.getStringCellValue();
} catch (Exception ex) {
NTEE_Code_value = "0";
}
try {
SortorSecondaryName_value = SortorSecondaryNamecell.getStringCellValue();
} catch (Exception ex) {
SortorSecondaryName_value = "0";
}
try {
YearValue = String.valueOf(TaxPeriodvalue).substring(0, 4).trim();
} catch (Exception ex) {
YearValue = "0";
}
try {
RangeValue = Math.ceil(Form990RevenueAmountvalue);
} catch (Exception ex) {
RangeValue = 0.0D;
}
if (RangeValue < 1000000.0D) {
ResultRange = "Less than $1 Million";
} else if ((RangeValue > 1000000.0D) && (RangeValue < 9999999.0D)) {
ResultRange = " $1-9.99 Million";
} else if ((RangeValue > 10000000.0D) && (RangeValue < 24999999.0D)) {
ResultRange = " $10-24.99 Million";
} else if ((RangeValue > 25000000.0D) && (RangeValue < 49999999.0D)) {
ResultRange = " $25-49.99 Million";
} else if ((RangeValue > 50000000.0D) && (RangeValue < 74999999.0D)) {
ResultRange = " $50-74.99 Million";
} else if ((RangeValue > 100000000.0D) && (RangeValue < 124999999.0D)) {
ResultRange = " $100-124.99 Million";
} else if ((RangeValue > 125000000.0D) && (RangeValue < 149999999.0D)) {
ResultRange = " $125-149.99 Million";
} else if ((RangeValue > 150000000.0D) && (RangeValue < 199999999.0D)) {
ResultRange = " $150-199.99 Million";
} else if ((RangeValue > 200000000.0D) && (RangeValue < 249999999.0D)) {
ResultRange = " $200-249.99 Million";
} else if ((RangeValue > 250000000.0D) && (RangeValue < 299999999.0D)) {
ResultRange = " $250-299.99 Million";
} else if ((RangeValue > 300000000.0D) && (RangeValue < 349999999.0D)) {
ResultRange = " $300-349.99 Million";
} else if ((RangeValue > 350000000.0D) && (RangeValue < 399999999.0D)) {
ResultRange = " $350-399.99 Million";
} else if ((RangeValue > 400000000.0D) && (RangeValue < 449999999.0D)) {
ResultRange = " $400-449.99 Million";
} else if ((RangeValue > 450000000.0D) && (RangeValue < 499999999.0D)) {
ResultRange = " $450-499.99 Million";
} else if ((RangeValue > 500000000.0D) && (RangeValue < 549999999.0D)) {
ResultRange = " $500-549.99 Million";
} else if ((RangeValue > 550000000.0D) && (RangeValue < 599999999.0D)) {
ResultRange = " $550-599.99 Million";
} else if ((RangeValue > 600000000.0D) && (RangeValue < 649999999.0D)) {
ResultRange = "$600-649.99 Million";
} else if ((RangeValue > 650000000.0D) && (RangeValue < 699999999.0D)) {
ResultRange = " $650-699.99 Million";
} else if ((RangeValue > 700000000.0D) && (RangeValue < 749999999.0D)) {
ResultRange = "$700-749.99 Million";
} else if ((RangeValue > 750000000.0D) && (RangeValue < 799999999.0D)) {
ResultRange = "$750-799.99 Million";
} else if ((RangeValue > 800000000.0D) && (RangeValue < 899999999.0D)) {
ResultRange = "$800-899.99 Million";
} else if ((RangeValue > 900000000.0D) && (RangeValue < 999999999.0D)) {
ResultRange = "$900-999.99";
} else if ((RangeValue > 1000000000.0D) && (RangeValue < 4999999999.0D)) {
ResultRange = "$1-4.99 Billion";
} else if ((RangeValue > 5000000000.0D) && (RangeValue < 14999999999.0D)) {
ResultRange = "$5-14.99 Billion";
} else if ((RangeValue > 15000000000.0D) && (RangeValue < 24999999999.0D)) {
ResultRange = "$15-24.99 Billion";
} else if ((RangeValue > 25000000000.0D) && (RangeValue < 49999999999.0D)) {
ResultRange = "$25-49.99 Billion";
} else if ((RangeValue > 50000000000.0D) && (RangeValue < 74999999999.0D)) {
ResultRange = "$50-74.99 Billion";
} else if ((RangeValue > 75000000000.0D) && (RangeValue < 99999999999.0D)) {
ResultRange = "$75-99.99 Billion";
} else if ((RangeValue > 100000000000.0D) && (RangeValue < 149999999999.0D)) {
ResultRange = "$100-149.99 Billion";
} else if ((RangeValue > 150000000000.0D) && (RangeValue < 199999999999.0D)) {
ResultRange = "$150-199.99 Billion";
} else if ((RangeValue > 200000000000.0D) && (RangeValue < 249999999999.0D)) {
ResultRange = "$200-249.99 Billion";
} else if ((RangeValue > 250000000000.0D) && (RangeValue < 299999999999.0D)) {
ResultRange = " $250-299.99 Billion";
} else if ((RangeValue > 300000000000.0D) && (RangeValue < 349999999999.0D)) {
ResultRange = " $300-349.99 Billion";
} else if ((RangeValue > 350000000000.0D) && (RangeValue < 399999999999.0D)) {
ResultRange = " $350-399.99 Billion";
} else if ((RangeValue > 400000000000.0D) && (RangeValue < 449999999999.0D)) {
ResultRange = " $400-449.99 Billion";
} else if ((RangeValue > 450000000000.0D) && (RangeValue < 499999999999.0D)) {
ResultRange = " $450-499.99 Billion";
} else if (RangeValue > 500000000000.0D) {
ResultRange = " $500 Billion +";
}
table.addRow(new Object[]{Integer.valueOf(Einvalue), namevalue, incarevalue, addressvalue, cityvalue, Statevalue, zipvalue, Integer.valueOf(groupvalue), Integer.valueOf(SubsectionCodevalue), Integer.valueOf(AffiliationCodevalue), Integer.valueOf(ClassificationCodevalue), Integer.valueOf(RulingDatevalue), Integer.valueOf(DeductibilityCodevalue), Integer.valueOf(Foundationcodevalue), Integer.valueOf(ActivityCodevalue), Integer.valueOf(OrganizationCodevalue), Integer.valueOf(ExemptOrganizationStatusCodevalue), Integer.valueOf(AdvancedRulingExpirationDatevalue), Integer.valueOf(TaxPeriodvalue), Integer.valueOf(AssetCodevalue), Integer.valueOf(IncomeCodevalue), Integer.valueOf(FilingRequirementCode), Integer.valueOf(PFFilingRequirementCodevalue), Blankvalue, Integer.valueOf(AccountingPeriodvalue), Double.valueOf(AssetAmountvalue), Double.valueOf(IncomeAmountvalue), navigaresign, Double.valueOf(Form990RevenueAmountvalue), navigaresign1_value, NTEE_Code_value, SortorSecondaryName_value, YearValue, ResultRange});
}
System.gc();
RowCount++;
}
System.gc();
myInput.close();
}
您可以在VM参数中增加最大堆大小 -Xmx=512M
要获得更清晰的理解，您可以参考。我强烈建议您使用一些csv jar，如opencsv等。这将使代码变得简单易读 我无法理解你的代码，因为它太长，无法阅读。如果代码没有诸如无限循环等漏洞 你可以试试这个。 在开始运行程序之前，在eclipse中添加-Xms512m-Xmx1024m-XX:MaxPermSize=512m
您可以在此处找到更多信息：为处理的每一行添加System.out，以便查看进度。您还可以添加：
if(RowCount%10==0){
System.out.println(RowCount);
}
if(RowCount > 100){
return;
}
//tweak numbers per your needs/expectations
如果您有一个巨大的电子表格，例如100000行，并且在死亡前很高兴增加到60000行左右，那么关于增加堆空间的另一个答案将是您的最佳选择。请注意，在一个实例之后增加Java堆大小通常只是一个短期解决方案。如果您使用Eclipse，是关于如何增加堆空间的完整教程 转到Eclipse文件夹 在Eclipse文件夹中查找Eclipse图标 右键单击它，您将获得“显示软件包内容”选项 目录文件夹将在屏幕上打开 如果你在Mac上，那么你会找到MacOS 打开MacOS文件夹，您将找到eclipse.ini文件 在word或任何文件编辑器中打开它进行编辑 -XX:MaxPermSize=256m -Xms40m -Xmx512m 将-Xmx512m更换为-Xmx1024m 保存文件并重新启动Eclipse
您尝试使用更大的堆大小？？我认为这不是获得帮助的好方法。请验证它并尽快给我解决方案。您是使用给定API创建电子表格的人吗？