急求POI 将数据导出到Word的实例

发布网友 发布时间：2022-04-23 05:05

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热心网友 时间：2023-06-22 20:31

import java.io.*;
import java.util.*;
import org.apache.poi.poifs.filesystem.*;
import org.apache.poi.util.LittleEndian;

public class WordTest {
public WordTest() {
}
public static boolean writeWordFile(String path, String content) {
boolean w = false;
try {

// byte b[] = content.getBytes("ISO-8859-1");
byte b[] = content.getBytes();

ByteArrayInputStream s = new ByteArrayInputStream(b);

POIFSFileSystem fs = new POIFSFileSystem();
DirectoryEntry directory = fs.getRoot();

DocumentEntry de = directory.createDocument("WordDocument", s);

FileOutputStream ostream = new FileOutputStream(path);

fs.writeFilesystem(ostream);

s.close();
ostream.close();

} catch (IOException e) {
e.printStackTrace();
}
return w;
}
public static void main(String[] args){
boolean b = writeWordFile("E://test.doc","hello");
}
}
/*
public String extractText(InputStream in) throws IOException {
ArrayList text = new ArrayList();
POIFSFileSystem fsys = new POIFSFileSystem(in);

DocumentEntry headerProps = (DocumentEntry) fsys.getRoot().getEntry("WordDocument");
DocumentInputStream din = fsys.createDocumentInputStream("WordDocument");
byte[] header = new byte[headerProps.getSize()];

din.read(header);
din.close();
// Prende le informazioni dall'header del documento
int info = LittleEndian.getShort(header, 0xa);

boolean useTable1 = (info & 0x200) != 0;

//boolean useTable1 = true;

// Prende informazioni dalla piece table
int complexOffset = LittleEndian.getInt(header, 0x1a2);
//int complexOffset = LittleEndian.getInt(header);

String tableName = null;
if (useTable1) {
tableName = "1Table";
} else {
tableName = "0Table";
}

DocumentEntry table = (DocumentEntry) fsys.getRoot().getEntry(tableName);
byte[] tableStream = new byte[table.getSize()];

din = fsys.createDocumentInputStream(tableName);

din.read(tableStream);
din.close();

din = null;
fsys = null;
table = null;
headerProps = null;

int multiple = findText(tableStream, complexOffset, text);

StringBuffer sb = new StringBuffer();
int size = text.size();
tableStream = null;

for (int x = 0; x < size; x++) {

WordTextPiece nextPiece = (WordTextPiece) text.get(x);
int start = nextPiece.getStart();
int length = nextPiece.getLength();

boolean unicode = nextPiece.usesUnicode();
String toStr = null;
if (unicode) {
toStr = new String(header, start, length * multiple, "UTF-16LE");
} else {
toStr = new String(header, start, length, "ISO-8859-1");
}
sb.append(toStr).append(" ");

}
return sb.toString();
}

private static int findText(byte[] tableStream, int complexOffset, ArrayList text)
throws IOException {
//actual text
int pos = complexOffset;
int multiple = 2;
//skips through the prms before we reach the piece table. These contain data
//for actual fast saved files
while (tableStream[pos] == 1) {
pos++;
int skip = LittleEndian.getShort(tableStream, pos);
pos += 2 + skip;
}
if (tableStream[pos] != 2) {
throw new IOException("corrupted Word file");
} else {
//parse out the text pieces
int pieceTableSize = LittleEndian.getInt(tableStream, ++pos);
pos += 4;
int pieces = (pieceTableSize - 4) / 12;
for (int x = 0; x < pieces; x++) {
int filePos =
LittleEndian.getInt(tableStream, pos + ((pieces + 1) * 4) + (x *<img src="/images/forum/smiles/icon_cool.gif"/> + 2);
boolean unicode = false;
if ((filePos & 0x40000000) == 0) {
unicode = true;
} else {
unicode = false;
multiple = 1;
filePos &= ~(0x40000000); //gives me FC in doc stream
filePos /= 2;
}
int totLength =
LittleEndian.getInt(tableStream, pos + (x + 1) * 4)
- LittleEndian.getInt(tableStream, pos + (x * 4));

WordTextPiece piece = new WordTextPiece(filePos, totLength, unicode);
text.add(piece);

}

}
return multiple;
}
public static void main(String[] args){
WordTest w = new WordTest();
POIFSFileSystem ps = new POIFSFileSystem();
try{

File file = new File("C:\\test.doc");

InputStream in = new FileInputStream(file);
String s = w.extractText(in);
System.out.println(s);

}catch(Exception e){
e.printStackTrace();
}

}
public boolean writeWordFile(String path, String content) {
boolean w = false;
try {

// byte b[] = content.getBytes("ISO-8859-1");
byte b[] = content.getBytes();

ByteArrayInputStream s = new ByteArrayInputStream(b);

POIFSFileSystem fs = new POIFSFileSystem();
DirectoryEntry directory = fs.getRoot();

DocumentEntry de = directory.createDocument("WordDocument", s);

FileOutputStream ostream = new FileOutputStream(path);

fs.writeFilesystem(ostream);

s.close();
ostream.close();

} catch (IOException e) {
e.printStackTrace();
}

return w;
}

}

class WordTextPiece {
private int _fcStart;
private boolean _usesUnicode;
private int _length;

public WordTextPiece(int start, int length, boolean unicode) {
_usesUnicode = unicode;
_length = length;
_fcStart = start;
}
public boolean usesUnicode() {
return _usesUnicode;
}

public int getStart() {
return _fcStart;
}
public int getLength() {
return _length;
}

}
*/