根据word模板填充内容生成word 空值怎么处理
时间: 2023-08-18 09:04:22 浏览: 201
当根据Word模板填充内容生成Word文档时,可以使用Apache POI的`XWPFDocument`类提供的方法来处理空值。以下是一个示例代码:
```java
import org.apache.poi.xwpf.usermodel.*;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
public class WordTemplateFiller {
public static void main(String[] args) {
try {
// 加载Word模板文件
FileInputStream templateStream = new FileInputStream("template.docx");
XWPFDocument document = new XWPFDocument(templateStream);
// 填充内容
Map<String, String> placeholders = new HashMap<>();
placeholders.put("name", "John Doe");
placeholders.put("age", "30");
placeholders.put("address", "");
replacePlaceholders(document, placeholders);
// 保存填充后的文档
FileOutputStream outputStream = new FileOutputStream("filled_template.docx");
document.write(outputStream);
outputStream.close();
System.out.println("Word文档生成成功!");
} catch (IOException e) {
e.printStackTrace();
}
}
private static void replacePlaceholders(XWPFDocument document, Map<String, String> placeholders) {
for (XWPFParagraph paragraph : document.getParagraphs()) {
for (XWPFRun run : paragraph.getRuns()) {
String text = run.getText(0);
if (text != null) {
for (Map.Entry<String, String> entry : placeholders.entrySet()) {
String placeholder = "${" + entry.getKey() + "}";
if (text.contains(placeholder)) {
text = text.replace(placeholder, entry.getValue());
run.setText(text, 0);
}
}
}
}
}
}
}
```
在上述代码中,我们首先加载Word模板文件,然后定义了一个`placeholders`的映射,其中包含了要替换的占位符和对应的值。接下来,我们调用`replacePlaceholders`方法来替换文档中的占位符。
在`replacePlaceholders`方法中,我们遍历文档中的每个段落和文本运行,通过检查文本内容中是否包含占位符来确定是否需要替换。如果找到了匹配的占位符,则将其替换为对应的值。
请注意,上述代码中使用的占位符格式为`${placeholder}`,你可以根据实际情况修改为其他格式。
对于空值的处理,可以在`placeholders`映射中将空字符串或其他默认值设置为相应的占位符值,这样在填充文档时,空值的占位符会被替换为默认值。
以上是一个基本示例,你可以根据自己的需求进行修改和扩展。同时,需要确保在项目中添加了Apache POI的依赖库。
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