本项目提供了一个基于Java的解决方案，用于按照预定义模板高效地导出Excel表格数据。采用Apache POI库简化开发流程，适用于需要批量生成报告或数据分析的应用场景。
根据Excel模板动态导出数据库数据的Java代码如下：
```java
package text;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import javax.servlet.ServletContext;
import net.sf.jxls.transformer.XLSTransformer;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class TextAction extends ActionSupport {
private static final long serialVersionUID = 1L;
private String filename;
@SuppressWarnings(rawtypes)
public String export() throws Exception {
String templateFile = 18.xls;
List datas = new ArrayList();
HashMap map = new HashMap<>();
map.put(name, 1111);
datas.add(map);
exportAndDownload(templateFile, datas);
return SUCCESS;
}
@SuppressWarnings({ rawtypes, unchecked })
public void exportAndDownload(String templateFile, List datas) {
try {
filename = UUID.randomUUID().toString() + templateFile;
ServletContext servletContext = ServletActionContext.getServletContext();
String path = servletContext.getRealPath(\\ExcelFile);
String srcFilePath = path + \\template\\ + templateFile;
String destFilePath = path + \\download\\ + filename;
Map beanParams = new HashMap();
beanParams.put(results, datas);
XLSTransformer transfer = new XLSTransformer();
transfer.transformXLS(srcFilePath, beanParams, destFilePath);
} catch (Exception e) {
e.printStackTrace();
}
}
public String getFilename() {
return filename;
}
public void setFilename(String filename) {
this.filename = filename;
}
}
```
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