现有一需求，有一word模板，领导要求开发者能将从数据库查询出来得结果集显示在上面并提供用户下载此文档。
模板如下图，其中“@*@”是我使用变量特殊字符占位得，想法是将正确的结果集去替换这些参数。
替换后的结果如下：
代码实现：
1：所需jar包如下：
2：代码结构
3：代码如下：
注释部分为图片替换，本demo同样支持图片显示。这里的路径不要写错了，自己使用时候改为自己的（读取的是文件在电脑的位置）。工具类代码如下：
/**
* 适用于word 2007
* poi 版本 3.7
*/
public class WordUtil {
/**
* 根据指定的参数值、模板，生成 word 文档
* @param param 需要替换的变量
* @param template 模板
*/
public static CustomXWPFDocument generateWord(Map<String, Object> param, String template) {
CustomXWPFDocument doc = null;
XWPFTable table = null;
List<XWPFTableRow> rows = null;
List<XWPFTableCell> cells = null;
List<XWPFParagraph> paragraphListTable = 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()) {
table = it.next();
rows = table.getRows();
for (XWPFTableRow row : rows) {
cells = row.getTableCells();
for (XWPFTableCell cell : cells) {
paragraphListTable = cell.getParagraphs();
processParagraphs(paragraphListTable, param, doc);
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
//doc.isEnforcedReadonlyProtection();//设置只读？
return doc;
}
/**
* 处理段落
* @param paragraphList
*/
@SuppressWarnings("unchecked")
public static void processParagraphs(List<XWPFParagraph> paragraphList,Map<String, Object> param,CustomXWPFDocument doc){
List<XWPFRun> runs = null;
String text = null;
boolean isSetText = false;
String key = null;
Object value = null;
Map<String, Object> pic = null;
int width = 0;
int height = 0;
int picType = 0;
byte[] byteArray = null;
ByteArrayInputStream byteInputStream = null;
int ind = 0;
if(paragraphList != null && paragraphList.size() > 0){
for(XWPFParagraph paragraph:paragraphList){
runs = paragraph.getRuns();
for (XWPFRun run : runs) {
isSetText = false;
text = run.getText(0);
if(text != null){
for (Entry<String, Object> entry : param.entrySet()) {
key = entry.getKey();
if(text.indexOf(key) != -1){
isSetText = true;
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
text = text.replace(key, "");
pic = (Map<String, Object>)value;
width = Integer.parseInt(pic.get("width").toString());
height = Integer.parseInt(pic.get("height").toString());
picType = getPictureType(pic.get("type").toString());
byteArray = (byte[]) pic.get("content");
byteInputStream = new ByteArrayInputStream(byteArray);
try {
ind = doc.addPicture(byteInputStream,picType);
doc.createPicture(ind, 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;
}
}