需求，今天有个需求，实现word文档批量导出，并附带图片，这里的批量导出是指导出一份word文档存在多分相同类型的数据。实现方式，定义一份word文档模板，使用占位符方式来替换文本内容。问题，怎么实现word文档合并？，及兼容图片？
这里稍微剖析下原理：上面合并的原理是，将word文档转换为xml字符串，然后把要合并的文档的xml进行拼接，生成新的文档。之所以图片无法合并是因为xml只保存了图片的基本信息及Id，但没有保存图片的具体二进制数据。所以解决思路是如何将文档中的图片合并到目标文档中。话不多说，直接鲁代码吧！！！
这里有个简单的：/weixin_41802726/article/details/95599630
package testModel;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.poi.POIXMLDocument;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.xwpf.usermodel.*;
import org.apache.xmlbeans.XmlOptions;
import org.openxmlformats.schemas.wordprocessingml.x.main.CTBody;
/**
*
* poi 版本 3.14
*/
public class WordUtil {
public static CustomXWPFDocument generateWord(Map<String, Object> param, String template) {
CustomXWPFDocument doc = null;
try {
OPCPackage pack = POIXMLDocument.openPackage(template);
doc = new CustomXWPFDocument(pack);
if (param != null && param.size() > 0) {
//处理段落
List<XWPFParagraph> paragraphList = doc.getParagraphs();
processParagraphs(paragraphList, param, doc);
//处理表格
Iterator<XWPFTable> it = doc.getTablesIterator();
while (it.hasNext()) {
XWPFTable table = it.next();
List<XWPFTableRow> rows = table.getRows();
for (XWPFTableRow row : rows) {
List<XWPFTableCell> cells = row.getTableCells();
for (XWPFTableCell cell : cells) {
List<XWPFParagraph> paragraphListTable = cell.getParagraphs();
processParagraphs(paragraphListTable, param, doc);
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return doc;
}
/**
* 处理段落
*
* @param paragraphList
*/
public static void processParagraphs(List<XWPFParagraph> paragraphList, Map<String, Object> param, CustomXWPFDocument doc) {
if (paragraphList != null && paragraphList.size() > 0) {
for (int i =0; i<paragraphList.size();i++) {
XWPFParagraph paragraph = paragraphList.get(i);
List<XWPFRun> runs = paragraph.getRuns();
for (int j = 0; j<runs.size();j++) {
XWPFRun run = runs.get(j);
String text = run.getText(0);
if (text != null) {
//System.out.println("读取文本："+text);
boolean isSetText = false;
for (Entry<String, Object> entry : param.entrySet()) {
String key = entry.getKey();
if (text.indexOf(key) != -1) {
isSetText = true;
Object value = entry.getValue();
if (value instanceof String) {//文本替换
text = text.replace(key, value.toString());
} else if (value instanceof Map) {//图片替换
//System.out.println("开始进行图片替换.....");
text = text.replace(key, "");
Map pic = (Map) value;
int width = Integer.parseInt(pic.get("width").toString());
int height = Integer.parseInt(pic.get("height").toString());
int picType = getPictureType(pic.get("type").toString());
byte[] byteArray = (byte[]) pic.get("content");
ByteArrayInputStream byteInputStream = new ByteArrayInputStream(byteArray);
try {
//int ind = doc.addPicture(byteInputStream,picType);
//doc.createPicture(ind, width , height,paragraph);
String ind = doc.addPictureData(byteInputStream, picType);
int id = doc.getNextPicNameNumber(picType);
doc.createPicture(ind, id, width, height, paragraph);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
if (isSetText) {
run.setText(text, 0);
}
}
}
}
}
}
/**
* 根据图片类型，取得对应的图片类型代码
*
* @param picType
* @return int
*/
private static int getPictureType(String picType) {
int res = CustomXWPFDocument.PICTURE_TYPE_PICT;
if (picType != null) {
if (picType.equalsIgnoreCase("png")) {
res = CustomXWPFDocument.PICTURE_TYPE_PNG;
} else if (picType.equalsIgnoreCase("dib")) {
res = CustomXWPFDocument.PICTURE_TYPE_DIB;
} else if (picType.equalsIgnoreCase("emf")) {
res = CustomXWPFDocument.PICTURE_TYPE_EMF;
} else if (picType.equalsIgnoreCase("jpg") || picType.equalsIgnoreCase("jpeg")) {
res = CustomXWPFDocument.PICTURE_TYPE_JPEG;
} else if (picType.equalsIgnoreCase("wmf")) {
res = CustomXWPFDocument.PICTURE_TYPE_WMF;
}
}
return res;
}
/**
* 将输入流中的数据写入字节数组
*
* @param in
* @return
*/
public static byte[] inputStream2ByteArray(InputStream in, boolean isClose) {
byte[] byteArray = null;
try {
int total = in.available();
byteArray = new byte[total];
in.read(byteArray);
} catch (IOException e) {
e.printStackTrace();
} finally {
if (isClose) {
try {
in.close();
} catch (Exception e2) {
System.out.println("关闭流失败");
}
}
}
return byteArray;
}
public static void appendBody(XWPFDocument src, XWPFDocument append) throws Exception {
CTBody src1Body = src.getDocument().getBody();
CTBody src2Body = append.getDocument().getBody();
List<XWPFPictureData> allPictures = append.getAllPictures();
// 记录图片合并前及合并后的ID
Map<String,String> map = new HashMap<>();
for (XWPFPictureData picture : allPictures) {
//String before = append.getPackageRelationship().getId();
String before = append.getRelationId(picture);
//将原文档中的图片加入到目标文档中
String after = src.addPictureData(picture.getData(), Document.PICTURE_TYPE_PNG);
map.put(before, after);
}
appendBody(src1Body, src2Body,map);
}
private static void appendBody(CTBody src, CTBody append,Map<String,String> map) throws Exception {
XmlOptions optionsOuter = new XmlOptions();
optionsOuter.setSaveOuter();
String appendString = append.xmlText(optionsOuter);
String srcString = src.xmlText();
String prefix = srcString.substring(0,srcString.indexOf(">")+1);
String mainPart = srcString.substring(srcString.indexOf(">")+1,srcString.lastIndexOf("<"));
String sufix = srcString.substring( srcString.lastIndexOf("<") );
String addPart = appendString.substring(appendString.indexOf(">") + 1, appendString.lastIndexOf("<"));
if (map != null && !map.isEmpty()) {
//对xml字符串中图片ID进行替换
for (Map.Entry<String, String> set : map.entrySet()) {
addPart = addPart.replace(set.getKey(), set.getValue());
}
}
//将两个文档的xml内容进行拼接
CTBody makeBody = CTBody.Factory.parse(prefix+mainPart+addPart+sufix);
src.set(makeBody);
}
}
package testModel;
import java.io.IOException;
import java.io.InputStream;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.xmlbeans.XmlException;
import org.apache.xmlbeans.XmlToken;
import org.openxmlformats.schemas.drawingml.x.main.CTNonVisualDrawingProps;
import org.openxmlformats.schemas.drawingml.x.main.CTPositiveSize2D;
import org.openxmlformats.schemas.drawingml.x.wordprocessingDrawing.CTInline;
/**
* 自定义 XWPFDocument，并重写 createPicture()方法
*/
public class CustomXWPFDocument extends XWPFDocument {
public CustomXWPFDocument(InputStream in) throws IOException {
super(in);
}
public CustomXWPFDocument() {
super();
}
public CustomXWPFDocument(OPCPackage pkg) throws IOException {
super(pkg);
}
/**
* @param id
* @param width 宽
* @param height 高
* @param paragraph 段落
*/
public void createPicture(String blipId, int id, int width, int height,XWPFParagraph paragraph) {
final int EMU = 9525;
width *= EMU;
height *= EMU;
//String blipId = getAllPictures().get(id).getPackageRelationship().getId();
CTInline inline = paragraph.createRun().getCTR().addNewDrawing().addNewInline();
String picXml = "" +
"<a:graphic xmlns:a=\"/drawingml//main\">" +
" <a:graphicData uri=\"/drawingml//picture\">" +
" <pic:pic xmlns:pic=\"/drawingml//picture\">" +
"<pic:nvPicPr>" +
"<pic:cNvPr id=\"" + id + "\" name=\"Generated\"/>" +
"<pic:cNvPicPr/>" +
"</pic:nvPicPr>" +
"<pic:blipFill>" +
"<a:blip r:embed=\"" + blipId + "\" xmlns:r=\"/officeDocument//relationships\"/>" +
"<a:stretch>" +
" <a:fillRect/>" +
"</a:stretch>" +
"</pic:blipFill>" +
"<pic:spPr>" +
"<a:xfrm>" +
" <a:off x=\"0\" y=\"0\"/>" +
" <a:ext cx=\"" + width + "\" cy=\"" + height + "\"/>" +
"</a:xfrm>" +
"<a:prstGeom prst=\"rect\">" +
" <a:avLst/>" +
"</a:prstGeom>" +
"</pic:spPr>" +
" </pic:pic>" +
" </a:graphicData>" +
"</a:graphic>";
// CTGraphicalObjectData graphicData =
inline.addNewGraphic().addNewGraphicData();
XmlToken xmlToken = null;
try {
xmlToken = XmlToken.Factory.parse(picXml);
} catch (XmlException xe) {
xe.printStackTrace();
}
inline.set(xmlToken);
inline.setDistT(0);
inline.setDistB(0);
inline.setDistL(0);
inline.setDistR(0);
CTPositiveSize2D extent = inline.addNewExtent();
extent.setCx(width);
extent.setCy(height);
CTNonVisualDrawingProps docPr = inline.addNewDocPr();
docPr.setId(id);
docPr.setName("Picture" + id);
docPr.setDescr("Generated");
}
}
package testModel;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import com.pactera.utils.DateUtil;
public class Demo {
public static void main(String[] args) throws Exception {
System.out.println("---------------start-------------------");
// 目标文档的输出路径
FileOutputStream fopts = new FileOutputStream("D:\\opensour\\apache-tomcat-8.0.30\\webapps\\file-service\\uploadfile\\word\\b.docx",true);
// 定义文档集合对象，将多个word拼接
List<XWPFDocument> documentList = new ArrayList<>();
// 模拟多个word
for (int i = 1; i <= 4; i++) {
Map<String, Object> param = new HashMap<>();
param.put("${projectName}", "xx项目");
param.put("${roomName}", "00"+i+"房");
param.put("${weixiu}", "维修单位");
param.put("${providerName}", "勇弟");
param.put("${createTime}", DateUtil.getCurrentTime());
param.put("${createTime}", DateUtil.getCurrentTime());
param.put("${weixiu}", "维修完成");
param.put("${engineerName}", "张三"+i);
// 图片路劲 多张图片
String fileUrl = "C:\\"+i+".png";
System.out.println(fileUrl);
// 设置图片的基本属性，如果没有图片 则忽略
Map<String,Object> header = new HashMap<String, Object>();
header.put("width", 100);
header.put("height", 150);
header.put("type", "png");
header.put("content", WordUtil.inputStream2ByteArray(new FileInputStream(fileUrl), true));
param.put("${image}",header);
// 读取word文档的模板
CustomXWPFDocument doc = WordUtil.generateWord(param, "D:\\opensour\\apache-tomcat-8.0.30\\webapps\\file-service\\uploadfile\\word\\orderModel2.docx");
documentList.add(doc);
}
XWPFDocument firstDoc = documentList.get(0);
// CTBody src1Body = firstDoc.getDocument().getBody();
for (int i = 1; i < documentList.size(); i++) {
// 多分文档拼接 将第一份与其它进行拼接，需设置分页符
documentList.get(i).createParagraph().setPageBreak(true);
// CTBody src2Body = documentList.get(i).getDocument().getBody();
WordUtil.appendBody(firstDoc,documentList.get(i));
}
firstDoc.write(fopts);
fopts.close();
System.out.println("---------------end-------------------");
}
}
实现效果如下：
