XWPFDocument给word中参数赋值并修改发送

isFile为文件路径，data为一个map对象，data.put("userName",userName);那么就需要在文档中写${userName}就可以输出到文档了

package com.jeeplus.modules.stock;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;


public class FileAlterInfo {
    /**
     * 实现对word读取和修改操作
     *
     * @param filePath
     *            word模板路径和名称
     * @param map
     *            待填充的数据，从数据库读取
     * @throws IOException
     * @throws InvalidFormatException
     */
    public static void readwriteWord(String inFile, Map data) throws InvalidFormatException, IOException {
        InputStream is = new FileInputStream(inFile);
        XWPFDocument document;
        try {
            document = new XWPFDocument(OPCPackage.open(is));
            // 替换段落里面的变量
            replaceInPara(document, data);
            OutputStream os = new FileOutputStream(inFile);
            document.write(os);
            close(os);
            close(is);
        } catch (Exception e) {

            e.printStackTrace();
        }

    }

    /**
     * 替换段落里面的变量
     *
     * @param doc
     *            要替换的文档
     * @param params
     *            参数
     */
    private static void replaceInPara(XWPFDocument doc, Map params) {
        Iterator iterator = doc.getParagraphsIterator();
        XWPFParagraph para;
        while (iterator.hasNext()) {
            para = iterator.next();
            replaceInPara(para, params);
        }
    }

    /**
     * 替换段落里面的变量
     *
     * @param para
     *            要替换的段落
     * @param params
     *            参数
     */
    private static void replaceInPara(XWPFParagraph para, Map params) {
        List runs;
        Matcher matcher;
        String runText = "";

            if (matcher(para.getParagraphText()).find()) {
                runs = para.getRuns();
                if (runs.size() > 0) {
                    int j = runs.size();
                    for (int i = 0; i < j; i++) {
                        XWPFRun run = runs.get(0);
                    String i1 = run.toString();
                        runText += i1;
                        para.removeRun(0);

                    }

                }
            System.out.println(runText);
                matcher = matcher(runText);

                if (matcher.find()) {
                    while ((matcher = matcher(runText)).find()) {
                        runText = matcher.replaceFirst(String.valueOf(params.get(matcher.group(1))));
                    }
                    // 直接调用XWPFRun的setText()方法设置文本时，在底层会重新创建一个XWPFRun，把文本附加在当前文本后面，
                    // 所以我们不能直接设值，需要先删除当前run,然后再自己手动插入一个新的run。
                    para.insertNewRun(0).setText(runText);
                }
            }

    }

    /**
     * 正则匹配字符串
     *
     * @param str
     * @return
     */
    private static Matcher matcher(String str) {
        Pattern pattern = Pattern.compile("\\$\\{(.+?)\\}", Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(str);
        return matcher;
    }

    /**
     * 关闭输入流
     *
     * @param is
     */
    private static void close(InputStream is) {
        if (is != null) {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 关闭输出流
     *
     * @param os
     */
    private static void close(OutputStream os) {
        if (os != null) {
            try {
                os.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}