POI向word添加图片,表格
程序员文章站
2022-07-14 16:29:52
...
package com.xxx.yyy.commons;
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.x2006.main.CTNonVisualDrawingProps;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPositiveSize2D;
import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.CTInline;
/**
* @author POI 导出图片bug修复
*
*/
public class CustomXWPFDocument extends XWPFDocument {
public CustomXWPFDocument(InputStream in) throws IOException {
super(in);
}
/**
*
*/
public CustomXWPFDocument() {
super();
// TODO Auto-generated constructor stub
}
/**
* @param pkg
* @throws IOException
*/
public CustomXWPFDocument(OPCPackage pkg) throws IOException {
super(pkg);
// TODO Auto-generated constructor stub
} // picAttch 图片后面追加的字符串 可以是空格
public void createPicture(XWPFParagraph paragraph,int id, int width, int height,String picAttch) {
final int EMU = 9525;
width *= EMU;
height *= EMU;
String blipId = getAllPictures().get(id).getPackageRelationship()
.getId();
CTInline inline = paragraph.createRun().getCTR()
.addNewDrawing().addNewInline();
paragraph.createRun().setText(picAttch);
String picXml = ""
+ "<a:graphic xmlns:a=\"http://schemas.openxmlformats.org/drawingml/2006/main\">"
+ " <a:graphicData uri=\"http://schemas.openxmlformats.org/drawingml/2006/picture\">"
+ " <pic:pic xmlns:pic=\"http://schemas.openxmlformats.org/drawingml/2006/picture\">"
+ " <pic:nvPicPr>" + " <pic:cNvPr id=\""
+ id
+ "\" name=\"Generated\"/>"
+ " <pic:cNvPicPr/>"
+ " </pic:nvPicPr>"
+ " <pic:blipFill>"
+ " <a:blip r:embed=\""
+ blipId
+ "\" xmlns:r=\"http://schemas.openxmlformats.org/officeDocument/2006/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);
// graphicData.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("图片" + id);
docPr.setDescr("");
}
}
POI或者JXL、docx4j，都是基于公开的标准做的。Office自2007版本开始使用ooxml，压缩的xml文档，2007之前都是二进制的B+树。但是2007+版本也只是把文件通用性结构部分公开了,微软的半开放导致一残废则都残废。所以设计到真正的图表，Flash 都没法子了。上面的类是代替POI中的XWPFDocument。因为继承了XWPFDocument，所以addPictureData不用重写了，图片显示的方法新增一下。这是因为POI 在拼装xml的时候把图片数据放入了，但是没有给提供显示的方法。用了OOXML就要用2007+版本，之所以选择它是因为2007+已经成为了世界标准。2007更是一个里程碑(不谈对微软情感看法)。(忘记说了POI 对word处理相当不给力，上面的代码是添加图片的bug处理，即使因为官方少了一段显示图片的xml)
action:
public void exportToWord2(){
try {
int picWidth = 240;
int picHeight = 150;
int picType = XWPFDocument.PICTURE_TYPE_JPEG;
String filePath = "简报.docx";
response.reset(); // 清空buffer
response.setContentType("application/vnd.openxmlformats-officedocument.wordprocessingml.document");
filePath = java.net.URLEncoder.encode(filePath, "UTF-8");
response.setHeader("Content-Disposition", "attachment; filename="+ new String(filePath.getBytes("UTF-8"), "GBK"));// 定义文件名
response.setHeader("Pragma", "no-cache");
response.setHeader("Expires", " 0");
ServletOutputStream fOut = response.getOutputStream();
XWPFParagraph paragraph = null;
XWPFTable table = null;
CustomXWPFDocument doc = new CustomXWPFDocument();
paragraph = doc.createParagraph();
doc.addPictureData(picInputStream,picType);
doc.createPicture(paragraph,doc.getAllPictures().size()-1, picWidth, picHeight,"");
doc.write(fOut);
fOut.flush();
fOut.close();
response.getOutputStream().flush();
response.getOutputStream().close();
} catch (Exception e) {
e.printStackTrace();
}
}
其中picInputStream 省略，这个图可以是又Jfreechart得到。
JFreeChart chart = null; //.......省略 ByteArrayOutputStream out = new ByteArrayOutputStream(); ChartUtilities.writeChartAsPNG(out, chart, 400, 300); ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray()); return in;
这样通过Jfreechart就可以得到ByteArrayInputStream.
因为addPictureData方法接收的参数是InputStream 看到网上很多人喜欢先写入操作系统，然后读取到流，我不喜。在生成图片的时候直接放到ByteArrayInputStream(继承了抽象类InputStream)，直接获取就少了存储相关的操作。JFreechart获取inputStream也就这2行代码。
createPicture方法的picAttch是图片之间放的东西 可以是N个空格做间隔，也可以是文字
弄一个word文件写入磁盘中测试例子，包含POI生成表格到word，jfreechart和POI生成图插入到word.需要jfreechart和poi ooxml的jar
import java.awt.Color;
import java.awt.Font;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFTable;
import org.apache.poi.xwpf.usermodel.XWPFTableRow;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;
public class CreateTablesWithPOI {
public static void main(String[] args) {
String outputFile = "D:\\test.docx";
CustomXWPFDocument document = new CustomXWPFDocument();
XWPFTable tableOne = document.createTable();
XWPFTableRow tableOneRowOne = tableOne.getRow(0);
tableOneRowOne.getCell(0).setText("第1行第1列");
tableOneRowOne.addNewTableCell().setText("第1行第2列");
tableOneRowOne.addNewTableCell().setText("第1行第3列");
tableOneRowOne.addNewTableCell().setText("第1行第4列");
XWPFTableRow tableOneRowTwo = tableOne.createRow();
tableOneRowTwo.getCell(0).setText("第2行第1列");
tableOneRowTwo.getCell(1).setText("第2行第2列");
tableOneRowTwo.getCell(2).setText("第2行第3列");
FileOutputStream fOut;
try {
fOut = new FileOutputStream(outputFile);
ByteArrayInputStream in = getPieChartImage();
String ind = document.addPictureData(in, XWPFDocument.PICTURE_TYPE_JPEG);
System.out.println("pic ID=" + ind);
document.createPicture(document.getAllPictures().size()-1, 200, 200," ");
// 放第二张图
ind = document.addPictureData(getBarChartImage(), XWPFDocument.PICTURE_TYPE_JPEG);
System.out.println("pic ID=" + ind);
document.createPicture(document.getAllPictures().size()-1, 200, 200," ");
document.write(fOut);
fOut.flush();
// 操作结束，关闭文件
fOut.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public static ByteArrayInputStream getPieChartImage() {
ByteArrayInputStream in = null;
DefaultPieDataset pieDataset = new DefaultPieDataset();
pieDataset.setValue(" 北京局 ", 20);
pieDataset.setValue(" 上海局 ", 18);
pieDataset.setValue(" 天津局 ", 16);
pieDataset.setValue(" 重庆局 ", 15);
pieDataset.setValue(" 山东局 ", 45);
JFreeChart chart = ChartFactory.createPieChart3D(" 企业备案图 ", pieDataset,
true, false, false);
// 设置标题字体样式
chart.getTitle().setFont(new Font(" 黑体 ", Font.BOLD, 20));
// 设置饼状图里描述字体样式
PiePlot piePlot = (PiePlot) chart.getPlot();
piePlot.setLabelFont(new Font(" 黑体 ", Font.BOLD, 10));
// 设置显示百分比样式
piePlot.setLabelGenerator(new StandardPieSectionLabelGenerator(
(" {0}({2}) "), NumberFormat.getNumberInstance(),
new DecimalFormat(" 0.00% ")));
// 设置统计图背景
piePlot.setBackgroundPaint(Color.white);
// 设置图片最底部字体样式
chart.getLegend().setItemFont(new Font(" 黑体 ", Font.BOLD, 10));
try {
ByteArrayOutputStream out = new ByteArrayOutputStream();
ChartUtilities.writeChartAsPNG(out, chart, 400, 300);
in = new ByteArrayInputStream(out.toByteArray());
} catch (Exception e) {
e.printStackTrace();
}
return in;
}
public static ByteArrayInputStream getBarChartImage() {
ByteArrayInputStream in = null;
DefaultCategoryDataset dataset =new DefaultCategoryDataset();
dataset.addValue(100,"Spring Security","Jan");
dataset.addValue(200,"jBPM 4","Jan");
dataset.addValue(300,"Ext JS","Jan");
dataset.addValue(400,"JFreeChart","Jan");
JFreeChart chart = ChartFactory.createBarChart("chart","num","type",dataset, PlotOrientation.VERTICAL, true, false, false);
// 设置标题字体样式
chart.getTitle().setFont(new Font(" 黑体 ", Font.BOLD, 20));
// 设置饼状图里描述字体样式
// 设置图片最底部字体样式
chart.getLegend().setItemFont(new Font(" 黑体 ", Font.BOLD, 10));
try {
ByteArrayOutputStream out = new ByteArrayOutputStream();
ChartUtilities.writeChartAsPNG(out, chart, 400, 300);
in = new ByteArrayInputStream(out.toByteArray());
} catch (Exception e) {
e.printStackTrace();
}
return in;
}
}
POI中设置一段文字我们可以写一个静态通用方法createParagraphContent，大致内容如下POI.java
public static void createParagraphContent(CustomXWPFDocument doc,String content) {
XWPFRun title= doc.createParagraph().createRun();// 设置一个新的段落
title.setText(content);
title.setFontFamily("宋体");
title.setBold(true);
}
itext的例子请参考 http://oneinit.iteye.com/blog/1529917
图表 http://www.dotblogs.com.tw/angus/archive/2010/05/19/15332.aspx
推荐阅读