最近有个word替换关键词和转为pdf的需求，网上找了一下午，不是依赖版本出大问题，就是替换关键词时不时多一点或少一点，于是愤而找了个还算能运行的框架，自己修修改改，总算可以成功运行需求了。
替换关键词的难点主要在word的一个机制上：
word会把一段话随机分成很多个run组件，如“地址：杭州上城区婺江路aaa号bb层cccc室”被分为[“地址：”，”杭州上城区婺江路aaa号b“，”b“，”层c“，”ccc“，”室“]，显而易见，关键词可能会被分割成好几个run组件，因此不能遍历每个run来替换关键词。
假如获取一整个段落里的文字，替换关键词后放进新的run里，又会丢失原来的文字格式，所以也不能直接对一整个段落进行简单的字符串替换。
我的方法是先获取整个段落里的文字，判断是否有关键词存在，若存在，则获取关键词位置，特殊处理关键词开头和结尾所在的run，中间的可以直接删除，这样就达到了替换关键词的目的。
关键代码
public static <V> void replace(XWPFParagraph paragraph, String searchText, V replacement) {
int firstPos = paragraph.getText().indexOf(searchText);
while (firstPos >= 0) {
int lastPos = firstPos + searchText.toString().length();
// 第一个和最后一个run要单独处理，中间的run可以直接删除
int pos = 0;
boolean find = false;
for (int i = 0, ln = paragraph.getRuns().size(); i < ln; i++) {
XWPFRun run = paragraph.getRuns().get(i);
String runText = run.getText(run.getTextPosition());
if (runText == null) {
continue;
}
if (!find) {
if (pos + runText.length() > firstPos) {
// 这里的第二个参数pos=0,替换run的子句; pos=1,在子句末端追加文字;所以这个参数感觉没有位置的意思啊，为什么也叫pos？
run.setText(runText.substring(0, firstPos - pos) + replacement.toString(), 0);
find = true;
}
pos += runText.length();
} else {
if (pos > lastPos) {
break;
} else if (pos <= lastPos - runText.length()) {
pos += runText.length();
// 不知道为啥，这个删除语句不起效，不过替换成空字符串也能起到删除效果
// paragraph.removeRun(i);
run.setText("", 0);
} else {
run.setText(runText.substring(lastPos - pos), 0);
break;
}
}
}
firstPos = paragraph.getText().indexOf(searchText);
}
}
依赖
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.lowagie/itext -->
<dependency>
<groupId>com.lowagie</groupId>
<artifactId>itext</artifactId>
<version>2.1.7</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-collections/commons-collections -->
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/fr.opensagres.xdocreport/fr.opensagres.xdocreport.itext.extension -->
<dependency>
<groupId>fr.opensagres.xdocreport</groupId>
<artifactId>fr.opensagres.xdocreport.itext.extension</artifactId>
<version>1.0.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.poi/ooxml-schemas -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>ooxml-schemas</artifactId>
<version>1.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/fr.opensagres.xdocreport/org.apache.poi.xwpf.converter.core -->
<dependency>
<groupId>fr.opensagres.xdocreport</groupId>
<artifactId>org.apache.poi.xwpf.converter.core</artifactId>
<version>1.0.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/fr.opensagres.xdocreport/org.apache.poi.xwpf.converter.pdf -->
<dependency>
<groupId>fr.opensagres.xdocreport</groupId>
<artifactId>org.apache.poi.xwpf.converter.pdf</artifactId>
<version>1.0.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.25</version>
</dependency>
</dependencies>
核心代码
/**
* 将word文档， 转换成pdf, 中间替换掉变量
*
* @param source 源为word文档，必须为docx文档，可以先把doc另存为docx
* @param target 目标输出
* @param params 需要替换的变量
* @param options PdfOptions.create().fontEncoding( "windows-1250" ) 或者其他
* @throws Exception
*/
public static void wordConverterToPdf(InputStream source, OutputStream target, PdfOptions options, Map<String, String> params) throws Exception {
XWPFDocument doc = new XWPFDocument(source);
replace(doc, params);
PdfConverter.getInstance().convert(doc, target, options);
}
public static <V> void replace(XWPFDocument document, Map<String, V> params) {
for (XWPFParagraph xwpfParagraph : document.getParagraphs()) {
replace(xwpfParagraph, params);
}
for (XWPFTable table : document.getTables()) {
for (XWPFTableRow row : table.getRows()) {
for (XWPFTableCell cell : row.getTableCells()) {
for (XWPFParagraph xwpfParagraph : cell.getParagraphs()) {
replace(xwpfParagraph, params);
}
}
}
}
}
public static <V> void replace(XWPFDocument document, String searchText, V replacement) {
List<XWPFParagraph> paragraphs = document.getParagraphs();
for (XWPFParagraph paragraph : paragraphs) {
replace(paragraph, searchText, replacement);
}
}
private static <V> void replace(XWPFParagraph paragraph, Map<String, V> map) {
for (Map.Entry<String, V> entry : map.entrySet()) {
replace(paragraph, entry.getKey(), entry.getValue());
}
}
public static <V> void replace(XWPFParagraph paragraph, String searchText, V replacement) {
int firstPos = paragraph.getText().indexOf(searchText);
while (firstPos >= 0) {
int lastPos = firstPos + searchText.toString().length();
// 第一个和最后一个run要单独处理，中间的run可以直接删除
int pos = 0;
boolean find = false;
for (int i = 0, ln = paragraph.getRuns().size(); i < ln; i++) {
XWPFRun run = paragraph.getRuns().get(i);
String runText = run.getText(run.getTextPosition());
if (runText == null) {
continue;
}
if (!find) {
if (pos + runText.length() > firstPos) {
// pos=0,替换run的子句; pos=1,在子句末端追加文字;
run.setText(runText.substring(0, firstPos - pos) + replacement.toString(), 0);
find = true;
}
pos += runText.length();
} else {
if (pos > lastPos) {
break;
} else if (pos <= lastPos - runText.length()) {
pos += runText.length();
// 不知道为啥，这个删除语句不起效，不过替换成空字符串也能起到删除效果
// paragraph.removeRun(i);
run.setText("", 0);
} else {
run.setText(runText.substring(lastPos - pos), 0);
break;
}
}
}
firstPos = paragraph.getText().indexOf(searchText);
}
}
/**
* 打印run里的字符位置,这个方法只是debug时为了参考字符位置写的
* @param paragraph
* @return
*/
private static Map<Integer, XWPFRun> getPosToRuns(XWPFParagraph paragraph) {
int pos = 0;
Map<Integer, XWPFRun> map = new HashMap<Integer, XWPFRun>(10);
for (XWPFRun run : paragraph.getRuns()) {
String runText = run.getText(run.getTextPosition());
if (runText != null) {
for (int i = 0; i < runText.length(); i++) {
map.put(pos + i, run);
}
pos += runText.length();
}
}
System.out.println(map);
return map;
}
运行函数
public static void main(String[] args) throws Exception {
final String url = "D:/";
String filePath = url + "/test.docx";
String outPath = url + "test.pdf";
InputStream source = new FileInputStream(filePath);
OutputStream target = new FileOutputStream(outPath);
Map<String, String> params = new HashMap<String, String>();
params.put("替换区1", "测试替换变量1a");
params.put("替换区2", "测试替换变量2a");
params.put("替换区3", "测试替换变量3a");
params.put("替换区4", "测试替换变量4a");
PdfOptions options = PdfOptions.create();
wordConverterToPdf(source, target, options, params);
}
参考
https://github.com/comradeWong/WordToPDFDemo.git
替换Apache POI XWPF中的文本-Java 学习之路 (javaroad.cn)
标签：Java,word,pos,runText,paragraph,params,pdf,run,替换 From： https://www.cnblogs.com/yiyuzi/p/16714860.html