1. 程序运行环境如下：
编译工具：IDEA
JDK版本：1.8.0
Excel测试文档：.xlsx 2013
Excel工具jar包：free spire.xls.jar 3.9.1
2.关于如何导入jar包
方法1：手动下载jar包。解压，将文件路径：D:\...\Spire.Xls-FE_3.9.1\lib\Spire.Xls.jar中的文件导入Java程序（即本文中使用的方法）。
方法2：Maven仓库下载导入。先在maven程序中配置pom.xml文件，如下内容：
<repositories>
<repository>
<id>com.e-iceblue</id>
<url>http://repo.e-iceblue.cn/repository/maven-public/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId> e-iceblue </groupId>
<artifactId>spire.xls.free</artifactId>
<version>3.9.1</version>
</dependency>
</dependencies>完成配置后，点击“Import”下载导入。
3. Java代码
import com.spire.xls.*;
import java.io.FileOutputStream;
import java.util.List;
import java.util.Map;
public class ExcelToSVG {
public static void main(String[] args) throws Exception{
//加载Excel测试文档
Workbook workbook = new Workbook();
workbook.loadFromFile("sample.xlsx");
int count = 1;
//获取分页信息
List<Map<Integer, PageColRow>> pageInfoList = workbook.getSplitPageInfo();
//遍历工作表
for (int i = 0; i < workbook.getWorksheets().getCount(); i++)
{
Worksheet sheet = workbook.getWorksheets().get(i);
FileOutputStream stream;
Map integerPageColRowMap = pageInfoList.get(i);//获取每页sheet的分页信息
for (Object object : integerPageColRowMap.values())
{
PageColRow colRow = (PageColRow) object;
stream = new FileOutputStream( (count++) + "-ExcelToSVG.svg");//指定文件名输出格式
//保存为SVG
sheet.toSVGStream(stream, colRow.StartRow, colRow.StartCol, colRow.EndRow, colRow.EndCol);
stream.flush();
stream.close();
}
}
}
}转换结果可在IDEA项目文件夹下查看，如下图：
另一种方法
同样使用Free-Spire-XLS
依赖引入同上
转换工具类
import com.spire.xls.Worksheet;
import org.apache.poi.ss.usermodel.Workbook;
import sun.misc.BASE64Encoder;
import javax.imageio.ImageIO;
import javax.imageio.stream.ImageInputStream;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
public class ExcelTransformUtil {
public static InputStream convert2Stream(Workbook workbook) throws Exception {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
workbook.write(bos);
byte[] barray = bos.toByteArray();
return new ByteArrayInputStream(barray);
}
public static void excel2Img(InputStream inputStream) {
com.spire.xls.Workbook book;
try {
book = new com.spire.xls.Workbook();
book.loadFromStream(inputStream);
Worksheet sheet = book.getWorksheets().get(0);
sheet.saveToImage("d://toImg.png");
} catch (Exception e) {
e.printStackTrace();
}
}
public static void excel2SVG(InputStream inputStream, HttpServletResponse response) {
com.spire.xls.Workbook book;
try {
book = new com.spire.xls.Workbook();
book.loadFromStream(inputStream);
Worksheet sheet = book.getWorksheets().get(0);
sheet.toSVGStream(response.getOutputStream(), sheet.getFirstRow(), sheet.getFirstColumn(),
sheet.getLastRow(), sheet.getLastColumn());
} catch (Exception e) {
e.printStackTrace();
}
}
}生成svg服务
public void generateSVG(ReportRequest request, HttpServletResponse response) throws Exception {
ServiceResult<List<OperationReportVO>> result = getOperationReport(request);
if (result != null && result.isSucceed() && !CollectionUtils.isEmpty(result.getData())) {
//转为map
List<Map<String, Object>> list = MapBeanUtil.objectsToMaps(result.getData());
Workbook workbook = ReportExportUtil.generateExcelReport("运行情况统计表",
getDateAndWeek(request.getPlanDate()), list, OperationReportVO.class);
ExcelTransformUtil.excel2SVG(ExcelTransformUtil.convert2Stream(workbook), response);
}
}此处的Workbook引自包：org.apache.poi.ss.usermodel.Workbook 。生成excel的workbook。然后将workbook转为输入流，com.spire.xls.Workbook读取输入流，转成svg。
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