没分了求教急急急！！！Can not find a java.io.InputStream with the name [inputStream]

您好，<!-- 文件下载，支持中文附件名 -->

<action name="fileDownload"

class="comtestactionfiledownFileDownloadAction">

<result name="success" type="stream">

<!-- 动态文件下载的，事先并不知道未来的文件类型，那么我们可以把它的值设置成为：application/octet-stream;charset=ISO8859-1 ，注意一定要加入charset，否则某些时候会导致下载的文件出错； -->

<param name="contentType">

application/octet-stream;charset=ISO8859-1

</param>

<param name="contentDisposition">

attachment;filename="${downloadFileName}"

</param>

<!-- 使用经过转码的文件名作为下载文件名，downloadFileName属性

对应action类中的方法 getDownloadFileName() 其中特殊的代码就是${downloadFileName}，它的效果相当于运行的时候将action对象的属性的取值动态的填充在${}中间的部分，我们可以认为它等价于＋action getDownloadFileName()。 -->

<param name="inputName">inputStream</param>

<param name="bufferSize">4096</param>

</result>

</action>

----------------------------------------------------------

action中

----------------------------------------------------------

private String fileName;// 初始的通过param指定的文件名属性 set get

/ 文件名 转换编码 防止中文乱码/

public String getDownloadFileName() {

String fileName=ServletActionContextgetRequest()getParameter("fileName");

String downFileName = fileName;

try {

downFileName = new String(downFileNamegetBytes(), "ISO8859-1");

} catch (Exception e) {

eprintStackTrace();

}

return downFileName;

}

//下载的流

public InputStream getInputStream() {

String name=thisgetDownloadFileName();

// String realPath=ServletActionContextgetServletContext()getRealPath("/uploadImages")+ "/"+name; 路径错误

String realPath="/uploadImages/"+name;

InputStream in=ServletActionContextgetServletContext()getResourceAsStream(realPath);

if(null==in){

Systemoutprintln("Can not find a javaioInputStream with the name [inputStream] in the invocation stack Check the <param name=\"inputName\"> tag specified for this action检查action中文件下载路径是否正确");

}

return ServletActionContextgetServletContext()getResourceAsStream(realPath);

}

@Override

public String execute() throws Exception {

return SUCCESS;

}

package comtest;

/

需要的jar包：

poi-302-FINAL-20080204jar

poi-contrib-302-FINAL-20080204jar

poi-scratchpad-302-FINAL-20080204jar

poi-35-beta6-20090622jar

geronimo-stax-api_10_spec-10jar

ooxml-schemas-10jar

openxml4j-bin-betajar

poi-ooxml-35-beta6-20090622jar

xmlbeans-230jar

dom4j-161jar

/

import javaioByteArrayInputStream;

import javaioFileInputStream;

import javaioFileOutputStream;

import javaioIOException;

import javaioInputStream;

import javaioStringWriter;

import orgapachepdfboxpdmodelPDDocument;

import orgapachepdfboxutilPDFTextStripper;

import orgapachepoiPOIOLE2TextExtractor;

import orgapachepoiPOITextExtractor;

import orgapachepoiPOIXMLDocument;

import orgapachepoiPOIXMLTextExtractor;

import orgapachepoiextractorExtractorFactory;

import orgapachepoihssfusermodelHSSFCell;

import orgapachepoihssfusermodelHSSFRow;

import orgapachepoihssfusermodelHSSFSheet;

import orgapachepoihssfusermodelHSSFWorkbook;

import orgapachepoihwpfextractorWordExtractor;

import orgapachepoiopenxml4jexceptionsOpenXML4JException;

import orgapachepoiopenxml4jopcOPCPackage;

import orgapachepoipoifsfilesystemDirectoryEntry;

import orgapachepoipoifsfilesystemDocumentEntry;

import orgapachepoipoifsfilesystemPOIFSFileSystem;

import orgapachepoixslfextractorXSLFPowerPointExtractor;

import orgapachepoixssfusermodelXSSFCell;

import orgapachepoixssfusermodelXSSFRow;

import orgapachepoixssfusermodelXSSFSheet;

import orgapachepoixssfusermodelXSSFWorkbook;

import orgapachepoixwpfextractorXWPFWordExtractor;

import orgapachexmlbeansXmlException;

public class WordAndExcelExtractor {

public static void main(String[] args) {

try {

// 读取word

String wordFile = "D:/1doc";

//String wordText2007 = WordAndExcelExtractorextractTextFromDOC2007(wordFile);

//Systemoutprintln("wordText2007=======" + wordText2007);

InputStream isword = new FileInputStream(wordFile);

WordExtractor wordExtractor = new WordExtractor(isword);

Systemoutprintln("word========" + wordExtractorgetText());

// 读取 Excel

InputStream is = new FileInputStream("D:/测试xls");

String excelText = WordAndExcelExtractorextractTextFromXLS(is);

Systemoutprintln("text2003==========" + excelText);

String excelFile = "D:/test2xlsx";

String excelText2007 = WordAndExcelExtractor

extractTextFromXLS2007(excelFile);

Systemoutprintln("excelText2007==========" + excelText2007);

// 读取 PPT

PowerPointExtractor ppe = new PowerPointExtractor("D:/testppt");

Systemoutprintln("ppt2003===============" + ppegetText());

// Systemoutprintln("###############################");

// Systemoutprintln(ppegetText(true, true, true, true));

//

// InputStream is = new FileInputStream("D:/testppt");

// PowerPointExtractor ppt2003 = new PowerPointExtractor(is);

// Systemoutprintln(ppt2003getText());

Systemoutprintln("");

XSLFPowerPointExtractor ppt = new XSLFPowerPointExtractor(

POIXMLDocumentopenPackage("D:/test2pptx"));

Systemoutprintln("ppt2007============================="

+ pptgetText());

/ 读取PDF /

InputStream in = new FileInputStream("D:/testpdf");

PDDocument pdfDocument = PDDocumentload(in);

if (pdfDocumentisEncrypted()) {

// 仅仅尝试使用默认密码打开加密的PDF

pdfDocumentdecrypt("");

}

PDFTextStripper stripper = null;

// 创建一个writer用来作来存储文件正文

StringWriter writer = new StringWriter();

if (stripper == null) {

stripper = new PDFTextStripper();

} else {

stripperresetEngine();

}

stripperwriteText(pdfDocument, writer);

String contents = writergetBuffer()toString();

Systemoutprintln("pdfd===" + contents);

/ 向Word中写入数据 /

byte[] a = contentsgetBytes();

ByteArrayInputStream bs = new ByteArrayInputStream(a);

POIFSFileSystem fs = new POIFSFileSystem();

// /////////////////////////////////

DirectoryEntry directory = fsgetRoot();

DocumentEntry de = directorycreateDocument("WordDocument", bs);

// 以上两句代码不能省略，否则输出的是乱码

FileOutputStream fos = new FileOutputStream("D:\\dddoc");

fswriteFilesystem(fos);

bsclose();

fosflush();

fosclose();

Systemoutprintln("写入成功");

} catch (Exception e) {

eprintStackTrace();

}

}

/

@Method: extractTextFromXLS

@Description: 从excel 2003档中提取纯文本

@param

@return String

@throws

/

@SuppressWarnings("deprecation")

private static String extractTextFromXLS(InputStream is) throws IOException {

StringBuffer content = new StringBuffer();

HSSFWorkbook workbook = new HSSFWorkbook(is); // 创建对Excel工作簿文件的引用

for (int numSheets = 0; numSheets < workbookgetNumberOfSheets(); numSheets++) {

if (null != workbookgetSheetAt(numSheets)) {

HSSFSheet aSheet = workbookgetSheetAt(numSheets); // 获得一个sheet

contentappend(aSheetgetSheetName());

contentappend("\r\n-----------------------\r\n");

for (int rowNumOfSheet = 0; rowNumOfSheet <= aSheet

getLastRowNum(); rowNumOfSheet++) {

if (null != aSheetgetRow(rowNumOfSheet)) {

HSSFRow aRow = aSheetgetRow(rowNumOfSheet); // 获得一行

for (short cellNumOfRow = 0; cellNumOfRow <= aRow

getLastCellNum(); cellNumOfRow++) {

if (null != aRowgetCell(cellNumOfRow)) {

HSSFCell aCell = aRowgetCell(cellNumOfRow); // 获得列值

if (aCellgetCellType() == HSSFCellCELL_TYPE_NUMERIC) {

contentappend(aCellgetNumericCellValue());

} else if (aCellgetCellType() == HSSFCellCELL_TYPE_BOOLEAN) {

contentappend(aCellgetBooleanCellValue());

} else {

contentappend(aCellgetStringCellValue());

}

contentappend("\t");

}

}

contentappend("\r\n");

}

}

}

}

return contenttoString();

}

/

@Method: extractTextFromXLS2007

@Description: 从excel 2007文档中提取纯文本

@param

@return String

@throws

/

private static String extractTextFromXLS2007(String fileName)

throws Exception {

StringBuffer content = new StringBuffer();

// 构造 XSSFWorkbook 对象，strPath 传入文件路径

XSSFWorkbook xwb = new XSSFWorkbook(fileName);

// 循环工作表Sheet

for (int numSheet = 0; numSheet < xwbgetNumberOfSheets(); numSheet++) {

XSSFSheet xSheet = xwbgetSheetAt(numSheet);

if (xSheet == null) {

continue;

}

// 循环行Row

for (int rowNum = 0; rowNum <= xSheetgetLastRowNum(); rowNum++) {

XSSFRow xRow = xSheetgetRow(rowNum);

if (xRow == null) {

continue;

}

// 循环列Cell

for (int cellNum = 0; cellNum <= xRowgetLastCellNum(); cellNum++) {

XSSFCell xCell = xRowgetCell(cellNum);

if (xCell == null) {

continue;

}

if (xCellgetCellType() == XSSFCellCELL_TYPE_BOOLEAN) {

contentappend(xCellgetBooleanCellValue());

} else if (xCellgetCellType() == XSSFCellCELL_TYPE_NUMERIC) {

contentappend(xCellgetNumericCellValue());

} else {

contentappend(xCellgetStringCellValue());

}

}

}

}

return contenttoString();

}

}

这是POI jar包的下载地址，我下载的是39版本的

>

首先这个List尽量是Object类型的，也就是：Listlist其次就是开始遍历这个listintcurrentRowNum=startRowNum-1;//从第几行开始写intcurrentColNum=startColNum-1;//从第几列开始写for(Object[]objects:list){//遍历listXSSFRowrow=sheetcreateRow(currentRowNum);//一个list就是一行，创建一个行for(Objectobject:objects){//遍历每一个list的Object[]数组if(object==null){XSSFCellcell=rowcreateCell(currentColNum++,XSSFCellCELL_TYPE_BLANK);//如果该单元格为空，则创建一个空格子，不然数据会移位cellsetCellValue("");//将这个空格设置为空字符串}elseif(objectinstanceofDouble||objectinstanceofFloat){//判断这个格子放的数据的类型，其他的同理XSSFCellcell=rowcreateCell(currentColNum++,XSSFCellCELL_TYPE_NUMERIC);//如果是Double或者Float类型的，则用这个方式cellsetCellValue(DoubleparseDouble(objecttoString()));}elseif(objectinstanceofLong||objectinstanceofInteger){XSSFCellcell=rowcreateCell(currentColNum++,XSSFCellCELL_TYPE_NUMERIC);cellsetCellValue(DoubleparseDouble(objecttoString()));}elseif(objectinstanceofDate){XSSFCellcell=rowcreateCell(currentColNum++,XSSFCellCELL_TYPE_STRING);cellsetCellValue(newSimpleDateFormat("dd-MM-yyyy")format((Date)object));}elseif(objectinstanceofBoolean){XSSFCellcell=rowcreateCell(currentColNum++,XSSFCellCELL_TYPE_BOOLEAN);cellsetCellValue((Boolean)object);}else{XSSFCellcell=rowcreateCell(currentColNum++,XSSFCellCELL_TYPE_STRING);cellsetCellValue(StringvalueOf(object));}}currentRowNum++;//写完第一个list，跳到下一行currentColNum=startColNum-1;}这种是poi *** 作EXCEL的方法哈。。jxl *** 作略有不同。

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