发布于 2016-07-12 12:06:18 | 148 次阅读 | 评论: 0 | 来源: 网友投递
Java程序设计语言
java 是一种可以撰写跨平台应用软件的面向对象的程序设计语言，是由Sun Microsystems公司于1995年5月推出的Java程序设计语言和Java平台（即JavaEE(j2ee), JavaME(j2me), JavaSE(j2se)）的总称。
Apache的POI项目可以用来处理MS Office文档，codeplex上还有一个它的.net版本。POI项目可创建和维护操作各种基于OOXML和OLE2文件格式的Java API。大多数MS Office都是OLE2格式的。POI通HSMF子项目来支持Outlook，通过HDGF子项目来支持Visio，通过HPBF子项目来支持Publisher。
使用POI抽取Word简单示例：
要引入poi-3.7.jat和poi-scratchpad-3.7.ajr这两个包。
package msoffice;import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.extractor.WordExtractor;
import org.apache.poi.hwpf.usermodel.CharacterRun;
import org.apache.poi.hwpf.usermodel.Paragraph;
import org.apache.poi.hwpf.usermodel.Range;
import org.apache.poi.hwpf.usermodel.Section;
public class Word {
// 直接抽取全部内容
public static String readDoc1(InputStream is) throws IOException {
WordExtractor extractor = new WordExtractor(is);
return extractor.getText();
}
//分章节Section、段落Paragraph、字符串CharacterRun抽取
public static void readDoc2(InputStream is) throws IOException {
HWPFDocument doc=new HWPFDocument(is);
Range r=doc.getRange();
for(int x=0;x<r.numSections();x++){
Section s=r.getSection(x);
for(int y=0;y<s.numParagraphs();y++){
Paragraph p=s.getParagraph(y);
for(int z=0;z<p.numCharacterRuns();z++){
CharacterRun run=p.getCharacterRun(z);
String text=run.text();
System.out.print(text);
}
}
}
}
public static void main(String[] args) {
File file = new File("/home/orisun/1.doc");
try {
FileInputStream fin = new FileInputStream(file);
String cont = readDoc1(fin);
System.out.println(cont);
fin.close();
fin = new FileInputStream(file);
readDoc2(fin);
fin.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
POI抽取PPT示例：
package msoffice;import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.poi.hslf.HSLFSlideShow;
import org.apache.poi.hslf.extractor.PowerPointExtractor;
import org.apache.poi.hslf.model.Slide;
import org.apache.poi.hslf.model.TextRun;
import org.apache.poi.hslf.usermodel.SlideShow;
public class PPT {
//直接抽取幻灯片的全部内容
public static String readDoc1(InputStream is) throws IOException{
PowerPointExtractor extractor=new PowerPointExtractor(is);
return extractor.getText();
}
//一张幻灯片一张幻灯片地读取
public static void readDoc2(InputStream is) throws IOException{
SlideShow ss=new SlideShow(new HSLFSlideShow(is));
Slide[] slides=ss.getSlides();
for(int i=0;i<slides.length;i++){
//读取一张幻灯片的标题
String title=slides[i].getTitle();
System.out.println("标题:"+title);
//读取一张幻灯片的内容(包括标题)
TextRun[] runs=slides[i].getTextRuns();
for(int j=0;j<runs.length;j++){
System.out.println(runs[j].getText());
}
}
}
public static void main(String[] args){
File file = new File("/home/orisun/2.ppt");
try{
FileInputStream fin=new FileInputStream(file);
String cont=readDoc1(fin);
System.out.println(cont);
fin.close();
fin=new FileInputStream(file);
readDoc2(fin);
fin.close();
}catch(IOException e){
e.printStackTrace();
}
}
}
Excel文件由多个Workbook组成，一个Workbook由多个Sheet组成。
POI抽取Excel简单示例：
package msoffice;import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.extractor.ExcelExtractor;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Row;
public class Excel {
//直接读取Excel的全部内容
public static String readDoc1(InputStream is)throws IOException{
HSSFWorkbook wb=new HSSFWorkbook(new POIFSFileSystem(is));
ExcelExtractor extractor=new ExcelExtractor(wb);
extractor.setFormulasNotResults(false);
extractor.setIncludeSheetNames(true);
return extractor.getText();
}
//读取时细化到Sheet、行甚至单元格
public static double getAvg(InputStream is)throws IOException{
HSSFWorkbook wb=new HSSFWorkbook(new POIFSFileSystem(is));
//获取第一张sheet
HSSFSheet sheet=wb.getSheetAt(0);
double molecule=0.0;
double denominator=0.0;
//按行遍历sheet
Iterator<Row> riter=sheet.rowIterator();
while(riter.hasNext()){
HSSFRow row=(HSSFRow)riter.next();
HSSFCell cell1=row.getCell(4);
HSSFCell cell2=row.getCell(4);
if(cell1.getCellType()!=HSSFCell.CELL_TYPE_NUMERIC){
System.err.println("数字类型错误！");
System.exit(-2);
}
if(cell2.getCellType()!=HSSFCell.CELL_TYPE_NUMERIC){
System.err.println("数字类型错误！");
System.exit(-2);
}
denominator+=Double.parseDouble(cell2.toString().trim());
molecule+=Double.parseDouble(cell2.toString().trim())*Float.parseFloat(cell1.toString().trim());
}
return molecule/denominator;
}
public static void main(String[] args){
File file = new File("/home/orisun/3.xls");
try{
FileInputStream fin=new FileInputStream(file);
String cont=readDoc1(fin);
System.out.println(cont);
fin.close();
fin=new FileInputStream(file);
System.out.println("加权平均分"+getAvg(fin));
fin.close();
}catch(IOException e){
e.printStackTrace();
}
}
}