POI生成WORD文档

h2:first-child, body>h1:first-child, body>h1:first-child+h2, body>h3:first-child, body>h4:first-child, body>h5:first-child, body>h6:first-child {
margin-top: 0;
padding-top: 0;
}

a:first-child h1, a:first-child h2, a:first-child h3, a:first-child h4, a:first-child h5, a:first-child h6 {
margin-top: 0;
padding-top: 0;
}

h1+p, h2+p, h3+p, h4+p, h5+p, h6+p {
margin-top: 10px;
}

/* LINKS
=============================================================================*/

a {
color: #4183C4;
text-decoration: none;
}

a:hover {
text-decoration: underline;
}

/* LISTS
=============================================================================*/

ul, ol {
padding-left: 30px;
}

ul li > :first-child,
ol li > :first-child,
ul li ul:first-of-type,
ol li ol:first-of-type,
ul li ol:first-of-type,
ol li ul:first-of-type {
margin-top: 0px;
}

ul ul, ul ol, ol ol, ol ul {
margin-bottom: 0;
}

dl {
padding: 0;
}

dl dt {
font-size: 14px;
font-weight: bold;
font-style: italic;
padding: 0;
margin: 15px 0 5px;
}

dl dt:first-child {
padding: 0;
}

dl dt>:first-child {
margin-top: 0px;
}

dl dt>:last-child {
margin-bottom: 0px;
}

dl dd {
margin: 0 0 15px;
padding: 0 15px;
}

dl dd>:first-child {
margin-top: 0px;
}

dl dd>:last-child {
margin-bottom: 0px;
}

/* CODE
=============================================================================*/

pre, code, tt {
font-size: 12px;
font-family: Consolas, "Liberation Mono", Courier, monospace;
}

code, tt {
margin: 0 0px;
padding: 0px 0px;
white-space: nowrap;
border: 1px solid #eaeaea;
background-color: #f8f8f8;
border-radius: 3px;
}

pre>code {
margin: 0;
padding: 0;
white-space: pre;
border: none;
background: transparent;
}

pre {
background-color: #f8f8f8;
border: 1px solid #ccc;
font-size: 13px;
line-height: 19px;
overflow: auto;
padding: 6px 10px;
border-radius: 3px;
}

pre code, pre tt {
background-color: transparent;
border: none;
}

kbd {
-moz-border-bottom-colors: none;
-moz-border-left-colors: none;
-moz-border-right-colors: none;
-moz-border-top-colors: none;
background-color: #DDDDDD;
background-image: linear-gradient(#F1F1F1, #DDDDDD);
background-repeat: repeat-x;
border-color: #DDDDDD #CCCCCC #CCCCCC #DDDDDD;
border-image: none;
border-radius: 2px 2px 2px 2px;
border-style: solid;
border-width: 1px;
font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
line-height: 10px;
padding: 1px 4px;
}

/* QUOTES
=============================================================================*/

blockquote {
border-left: 4px solid #DDD;
padding: 0 15px;
color: #777;
}

blockquote>:first-child {
margin-top: 0px;
}

blockquote>:last-child {
margin-bottom: 0px;
}

/* HORIZONTAL RULES
=============================================================================*/

hr {
clear: both;
margin: 15px 0;
height: 0px;
overflow: hidden;
border: none;
background: transparent;
border-bottom: 4px solid #ddd;
padding: 0;
}

/* TABLES
=============================================================================*/

/* IMAGES
=============================================================================*/

img {
max-width: 100%
}
-->

POI生成WORD文档

POI为Java系处理office文档的比较优秀的开源库，其中对于Excel的处理最为优秀，文档也写的很详细。不过很多网友都认为它在word文档处理方面就逊色很多，不过对于我本次的完成文档的生成我依然选择了POI。添加微信回复POI邀请你加群

需要完成功能

1. 配置Word模板文件，包括表格
2. 解析配置的Word文档，返回配置的特殊标记
3. 构造数据，替换配置的标签，以及生成表格

配置word模版

采用${xx}方式配置标签，如果是表格在对应一行一列配置表格名称

注意在word文档中，如果两个相近的字符样式不同，word默认会保存在不同的RUN元素中，由此很多朋友在配置好以后都需要保存为一个单独的文件，然后不把不在一起的标签合并到一个RUN元素中，如果文件比较大，我相信这绝对是一个比较痛苦的事情，这里将会侧重处理这个问题.我的解决方案是只保留第一RUN的样式其他的删掉

解析word模板

首先需要将文件转换为XWPFDocument对象，可以通过流的当时，也可以通过opcpackage,不过如果使用opcpackage打开的方式，打开的文件和最终生成的文件不能够是同一个文件，我这里采用文件流的方式

public XWPFDocument openDocument() {
        XWPFDocument xdoc = null;
        InputStream is = null;
        try {
            is = new FileInputStream(saveFile);
            xdoc = new XWPFDocument(is);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return xdoc;
    }

获取非列表的标签，实现方式XWPFDocument对象有当前所有段落以及表格，这里暂不考虑表格嵌套表格的情况，每个段落的文本信息是可以通过p.getText()获取，获取段落中文档配置信息如下：

   // 获取段落集合中所有文本
    public List<TagInfo> getWordTag(XWPFDocument doc, String regex) {
        List<TagInfo> tags = new ArrayList<TagInfo>();
        // 普通段落
        List<XWPFParagraph> pars = doc.getParagraphs();
        for (int i = 0; i < pars.size(); i++) {
            XWPFParagraph p = pars.get(i);
            setTagInfoList(tags, p, regex);
        }
        // Table中段落
        List<XWPFTable> commTables = getDocTables(doc, false, regex);
        for (XWPFTable table : commTables) {
            List<XWPFParagraph> tparags = getTableParagraph(table);
            for (int i = 0; i < tparags.size(); i++) {
                XWPFParagraph p = tparags.get(i);
                setTagInfoList(tags, p, regex);
            }
        }
        return tags;
    }

获取文本后通过正则解析，并依次保存到TagInfo中

// 向 taglist中添加新解析的段落信息
    private void setTagInfoList(List<TagInfo> list, XWPFParagraph p,
            String regex) {
        if (regex == "")
            regex = defaultRegex;
        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(p.getText());
        int startPosition = 0;
        while (matcher.find(startPosition)) {
            String match = matcher.group();
            if (!list.contains(new TagInfo(match, match, ""))) {
                list.add(new TagInfo(match, match, ""));
            }
            startPosition = matcher.end();
        }
    }

解析表格

    // 获取Table列表中的配置信息
    public Map<String, List<List<TagInfo>>> getTableTag(XWPFDocument doc,
            String regex) {
        Map<String, List<List<TagInfo>>> mapList = new HashMap<String, List<List<TagInfo>>>();
        List<XWPFTable> lstTables = getDocTables(doc, true, regex);
        for (XWPFTable table : lstTables) {
            // 获取每个表格第一个单元格，以及最后一行
            String strTableName = getTableListName(table, regex);
            List<List<TagInfo>> list = new ArrayList<List<TagInfo>>();
            List<TagInfo> lstTag = new ArrayList<TagInfo>();
            int rowSize = table.getRows().size();
            XWPFTableRow lastRow = table.getRow(rowSize - 1);
            for (XWPFTableCell cell : lastRow.getTableCells()) {
                for (XWPFParagraph p : cell.getParagraphs()) {
                    // 去掉空白字符串
                    if (p.getText() != null && p.getText().length() > 0) {
                        setTagInfoList(lstTag, p, regex);
                    }
                }
            }
            list.add(lstTag);
            // 添加到数据集
            mapList.put(strTableName, list);
        }
        return mapList;
    }

生成WORD文档

难点替换标签
传入数据格式包含三个formtag以及一个tableTag

{"formTags":
  [{"TagName":"${xxxx}","TagText":"${xxxx}","TagValue":""},
   {"TagName":"${123}","TagText":"${123}","TagValue":""},
   {"TagName":"${ddd}","TagText":"${ddd}","TagValue":""}],
"tableTags":{ 
     "${table}":[
          [{"TagName":"${COL1}","TagText":"${COL1}","TagValue":""},{"TagName":"${COL2}","TagText":"${COL2}","TagValue":""}]
         ]}
    }

普通文档生成，并且保留配置样式，这里主要使用POI中提供searchText方法，返回Tag所有所在的RUN标签，通过一个字符做比较，如果找的第一个匹配的文本开始计数，所有在当前条件下类型 $${xxx}这样的标签是无法实现替换的
替换普通文本Tag

    public void ReplaceInParagraph(List<TagInfo> tagList, XWPFParagraph para,
            String regex) {
        if (regex == "")
            regex = defaultRegex;
        List<XWPFRun> runs = para.getRuns();
        for (TagInfo ti : tagList) {
            String find = ti.TagText;
            String replValue = ti.TagValue;
            TextSegement found = para.searchText(find,
                    new PositionInParagraph());
            if (found != null) {
                // 判断查找内容是否在同一个Run标签中
                if (found.getBeginRun() == found.getEndRun()) {
                    XWPFRun run = runs.get(found.getBeginRun());
                    String runText = run.getText(run.getTextPosition());
                    String replaced = runText.replace(find, replValue);
                    run.setText(replaced, 0);
                } else {
                    // 存在多个Run标签
                    StringBuilder sb = new StringBuilder();
                    for (int runPos = found.getBeginRun(); runPos <= found
                            .getEndRun(); runPos++) {
                        XWPFRun run = runs.get(runPos);
                        sb.append(run.getText((run.getTextPosition())));
                    }
                    String connectedRuns = sb.toString();
                    String replaced = connectedRuns.replace(find, replValue);
                    XWPFRun firstRun = runs.get(found.getBeginRun());
                    firstRun.setText(replaced, 0);
                    // 删除后边的run标签
                    for (int runPos = found.getBeginRun() + 1; runPos <= found
                            .getEndRun(); runPos++) {
                        // 清空其他标签内容
                        XWPFRun partNext = runs.get(runPos);
                        partNext.setText("", 0);
                    }
                }
            }
        }
        // 完成第一遍查找,检测段落中的标签是否已经替换完
        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(para.getText());
        boolean find = matcher.find();
        if (find) {
            ReplaceInParagraph(tagList, para, regex);
            find = false;
        }
    }

表格主要是通过复制模版行，然后对模版行中的内容做修改
复制文本标签RUN

    private void CopyRun(XWPFRun target, XWPFRun source) {
        target.getCTR().setRPr(source.getCTR().getRPr());
        // 设置文本
        target.setText(source.text());
    }

复制段落XWPFParagraph

    private void copyParagraph(XWPFParagraph target, XWPFParagraph source) {
        // 设置段落样式
        target.getCTP().setPPr(source.getCTP().getPPr());
        // 添加Run标签
        for (int pos = 0; pos < target.getRuns().size(); pos++) {
            target.removeRun(pos);
        }
        for (XWPFRun s : source.getRuns()) {
            XWPFRun targetrun = target.createRun();
            CopyRun(targetrun, s);
        }
    }

复制单元格XWPFTableCell

    private void copyTableCell(XWPFTableCell target, XWPFTableCell source) {
        // 列属性
        target.getCTTc().setTcPr(source.getCTTc().getTcPr());
        // 删除目标 targetCell 所有单元格
        for (int pos = 0; pos < target.getParagraphs().size(); pos++) {
            target.removeParagraph(pos);
        }
        // 添加段落
        for (XWPFParagraph sp : source.getParagraphs()) {
            XWPFParagraph targetP = target.addParagraph();
            copyParagraph(targetP, sp);
        }
    }

复制行XWPFTableRow

    private void CopytTableRow(XWPFTableRow target, XWPFTableRow source) {
        // 复制样式
        target.getCtRow().setTrPr(source.getCtRow().getTrPr());
        // 复制单元格
        for (int i = 0; i < target.getTableCells().size(); i++) {
            copyTableCell(target.getCell(i), source.getCell(i));
        }
    }

以上就完成所有功能更，只要你配置规范，可以完全原样输出模版内容。这里特别感谢下肖哥哥大力支持。

其次，java的编码真的让人很无语，get或post时中文各种乱码