提前工作

引入相关依赖

项目使用的是gradle，依赖如下所示

compile "org.apache.poi:poi:4.1.0"
compile "org.apache.poi:poi-ooxml:4.1.0"
compile "org.apache.poi:poi-scratchpad:4.1.0"

修改word模板

此处需要注意word中##替换内容##一定要顺序来写，千万不要先写####，然后把内容拷贝进去，那样的话读取的时候会读取成##，替换内容，##三部分，达不到替换的目的。

替换内容和表格

自定义转换map注解

此处自定义了一个Map2ObjectKey annotation，用于将查询出的结果替换成map，方便后面使用正则来替换
Map2ObjectKey的annotation的代码如下：

package *.*.infrastructure.annotation;import java.lang.annotation.*;@Target({ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
public @interface Map2ObjectKey {String value();
}

Map2ObjectKey的aop的代码如下：

package *.*.infrastructure.aop;import *.*.infrastructure.annotation.Map2ObjectKey;
import lombok.extern.slf4j.Slf4j;import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;@Slf4j
public class Map2Object {public static Map<String,String> convert(Object o){Map<String,String> map = new HashMap<>();Field[] fields = o.getClass().getDeclaredFields();try {for (int i = 0; i < fields.length; i++) {Field field = fields[i];field.setAccessible(true);Map2ObjectKey map2ObjectKey = field.getAnnotation(Map2ObjectKey.class);String key = "";if (map2ObjectKey != null) {key = map2ObjectKey.value();}else{key = field.getName();}String value = field.get(o) != null ? field.get(o).toString() : "";map.put(key,value);}}catch (SecurityException e) {log.debug("map2object error:{}",e.getCause());} catch (IllegalAccessException e) {log.debug("map2object error:{}",e.getCause());}return map;}
}

定义替换查询结果bean

定义内容替换查询结果bean，bean的代码如下

package *.*.application.dto;import *.*.infrastructure.annotation.Map2ObjectKey;
import lombok.Data;@Data
public class ReplaceContentExp {@Map2ObjectKey("##替换内容1##")private String replaceContent1;@Map2ObjectKey("##替换内容2##")private String replaceContent2;@Map2ObjectKey("##替换内容3##")private String replaceContent3;
}

定义表格替换查询结果bean，bean的代码如下

package *.*.application.dto;import *.*.infrastructure.annotation.Map2ObjectKey;
import lombok.Data;@Data
public class TableReplaceContentExp {@Map2ObjectKey("##表格替换内容1##")private String tableReplaceContent1;@Map2ObjectKey("##表格替换内容2##")private String tableReplaceContent2;@Map2ObjectKey("##表格替换内容3##")private String tableReplaceContent3;
}

读取word，查询段落和表格以及导出替换word到指定目录

代码如下：

ReplaceContentExp replaceContentExp = new ReplaceContentExp();
//此处省略查询过程
Map<String, String> params = Map2Object.convert(replaceContentExp);
String fileName = "replaced.docx";
XWPFDocument doc = new XWPFDocument(in);
List<XWPFParagraph> parasList = doc.getParagraphs();
//替换段落标记
replaceInAllParagraphs(parasList, params);List<TableReplaceContentExp> tableReplaceContentExps = new ArrayList<>();
//此处省略查询过程
List<Map<String, String>> tableParamsMaps = new ArrayList<>();
for (TableReplaceContentExp tableReplaceContentExp: tableReplaceContentExps) {Map<String, String> tableParams = Map2Object.convert(tableReplaceContentExp);tableParamsMaps.add(tableParams);
}
//替换表格标记
List<XWPFTable> tables = doc.getTables();
replaceInTables(tables, tableParamsMaps);
FileOutputStream outStream;
try {outStream = new FileOutputStream("/data/file/" + fileName);doc.write(outStream);outStream.flush();outStream.close();
} catch (IOException e) {e.printStackTrace();
}
return fileName;

替换段落标记

代码如下：

private static void replaceInAllParagraphs(List<XWPFParagraph> parasList, Map<String, String> params) {for (XWPFParagraph paragraph : parasList) {List<XWPFRun> runs = paragraph.getRuns();for (XWPFRun run : runs) {String oneParaString = run.getText(run.getTextPosition());if (!StringUtils.isEmpty(oneParaString)) {log.debug("oneParaString before is :{}", oneParaString);for (Map.Entry<String, String> entry : params.entrySet()) {Pattern regex = Pattern.compile(entry.getKey(), Pattern.CASE_INSENSITIVE);oneParaString = oneParaString.replaceAll(regex.pattern(), entry.getValue());}log.debug("oneParaString after is :{}", oneParaString);run.setText(oneParaString, 0);}}}}

替换表格标记

此处一定要使用row的构造函数XWPFTableRow(CTRow row, XWPFTable table)来创建新行，否则会出现新增行的id和上一行一样，会一直替换上一行

代码如下：

private static void replaceInTables(List<XWPFTable> xwpfTableList, List<Map<String, String>> tableParamsMaps) throws IOException, XmlException {for (XWPFTable table : xwpfTableList) {int index = 1;for (Map<String, String> tableParams : tableParamsMaps) {XWPFTableRow lastRow = table.getRows().get(table.getNumberOfRows() - 1);CTRow ctRow = CTRow.Factory.parse(lastRow.getCtRow().newInputStream());//此处一定要使用row的构造函数XWPFTableRow(CTRow row, XWPFTable table)来创建新行，否则会出现新增行的id和上一行一样，会一直替换上一行XWPFTableRow newRow = new XWPFTableRow(ctRow, table);for (XWPFTableCell cell : newRow.getTableCells()) {replaceInAllParagraphs(cell.getParagraphs(), tableParams);}table.addRow(newRow, index);index++;}table.removeRow(table.getNumberOfRows() - 1);}}

总结

以上就是spingboot中使用org.apache.poi.xwpf来达到替换word模板中的内容以及动态替换表格，表格需要先在word模板中增加一行并用##表格替换内容##标记