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利用POI实现Word和 Html互转（可以实现在线预览）

2016-02-01 12:44 761 查看

利用POI将Word转换为Html,以便在浏览器上预览

package com.vito.demo.test;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.List;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.apache.commons.io.FileUtils;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.converter.PicturesManager;
import org.apache.poi.hwpf.converter.WordToHtmlConverter;
import org.apache.poi.hwpf.usermodel.Picture;
import org.apache.poi.hwpf.usermodel.PictureType;
import org.w3c.dom.Document;
public class PoiWordToHtml {
public static void main(String[] args) throws Throwable {
final String path = "G:\\doc\\";
final String file = "客户需求文档.doc";
InputStream input = new FileInputStream(path + file);
HWPFDocument wordDocument = new HWPFDocument(input);
WordToHtmlConverter wordToHtmlConverter = new WordToHtmlConverter(
DocumentBuilderFactory.newInstance().newDocumentBuilder()
.newDocument());
wordToHtmlConverter.setPicturesManager(new PicturesManager() {
public String savePicture(byte[] content, PictureType pictureType,
String suggestedName, float widthInches, float heightInches) {
return suggestedName;
}
});
wordToHtmlConverter.processDocument(wordDocument);
List pics = wordDocument.getPicturesTable().getAllPictures();
if (pics != null) {
for (int i = 0; i < pics.size(); i++) {
Picture pic = (Picture) pics.get(i);
try {
pic.writeImageContent(new FileOutputStream(path
+ pic.suggestFullFileName()));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
}
Document htmlDocument = wordToHtmlConverter.getDocument();
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
DOMSource domSource = new DOMSource(htmlDocument);
StreamResult streamResult = new StreamResult(outStream);
TransformerFactory tf = TransformerFactory.newInstance();
Transformer serializer = tf.newTransformer();
serializer.setOutputProperty(OutputKeys.ENCODING, "utf-8");
serializer.setOutputProperty(OutputKeys.INDENT, "yes");
serializer.setOutputProperty(OutputKeys.METHOD, "html");
serializer.transform(domSource, streamResult);
outStream.close();
String content = new String(outStream.toByteArray());
FileUtils.write(new File(path, "1.html"), content, "utf-8");
}
}

public void htmlToWord2() throws Exception {
InputStream bodyIs = new FileInputStream("f:\\1.html");
InputStream cssIs = new FileInputStream("f:\\1.css");
String body = this.getContent(bodyIs);
String css = this.getContent(cssIs);
//拼一个标准的HTML格式文档
String content = "<html><head><style>" + css + "</style></head><body>" + body + "</body></html>";
InputStream is = new ByteArrayInputStream(content.getBytes("GBK"));
OutputStream os = new FileOutputStream("f:\\1.doc");
this.inputStreamToWord(is, os);
}

/**
* 把is写入到对应的word输出流os中
* 不考虑异常的捕获，直接抛出
* @param is
* @param os
* @throws IOException
*/
private void inputStreamToWord(InputStream is, OutputStream os) throws IOException {
POIFSFileSystem fs = new POIFSFileSystem();
//对应于org.apache.poi.hdf.extractor.WordDocument
fs.createDocument(is, "WordDocument");
fs.writeFilesystem(os);
os.close();
is.close();
}

/**
* 把输入流里面的内容以UTF-8编码当文本取出。
* 不考虑异常，直接抛出
* @param ises
* @return
* @throws IOException
*/
private String getContent(InputStream... ises) throws IOException {
if (ises != null) {
StringBuilder result = new StringBuilder();
BufferedReader br;
String line;
for (InputStream is : ises) {
br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
while ((line=br.readLine()) != null) {
result.append(line);
}
}
return result.toString();
}
return null;
}

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标签： POI html和word互换预览

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