0

我尝试使用以下代码在 Android 上的 excel 中导出图像，但出现错误。复制logcat ...请帮助！

代码：

        package com.android.testexcel;

        import java.io.ByteArrayOutputStream;
        import java.io.FileInputStream;
        import java.io.FileOutputStream;
        import java.io.IOException;

        import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
        import org.apache.poi.hssf.usermodel.HSSFPatriarch;
        import org.apache.poi.hssf.usermodel.HSSFSheet;
        import org.apache.poi.hssf.usermodel.HSSFWorkbook;

        public class MyWorkBook {
            void writeImageToExcel(String filePath, String imageFileName) {
                int col = 1, row = 1;
                HSSFWorkbook wb = new HSSFWorkbook();
                HSSFSheet testsheet = wb.createSheet("test");
                System.out.println("The work book is created");
                try {
                    FileOutputStream fos = new FileOutputStream(filePath);
                    System.out.println("File sample.xls is created");
                    FileInputStream fis = new FileInputStream(imageFileName);
                    ByteArrayOutputStream img_bytes = new ByteArrayOutputStream();
                    int b;
                    while ((b = fis.read()) != -1)
                        img_bytes.write(b);
                    fis.close();
                    HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 0, 0,
                            (short) col, row, (short) ++col, ++row);
                    int index = wb.addPicture(img_bytes.toByteArray(),
                            HSSFWorkbook.PICTURE_TYPE_JPEG);
                    HSSFSheet sheet = wb.getSheet("test");
                    HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
                    patriarch.createPicture(anchor, index);
                    anchor.setAnchorType(2);
                    wb.write(fos);
                    System.out.println("Writing data to the xls file");
                    fos.close();
                    System.out.println("File closed");
                } catch (IOException ioe) {

                    System.out
                            .println("Hi ! You got an exception. " + ioe.getMessage());
                    ioe.printStackTrace();
                }
            }
        }// end of class MyWorkBook

日志猫：

05-13 19:11:47.665：E/AndroidRuntime(7288)：致命异常：主要 05-13 19:11:47.665：E/AndroidRuntime(7288)：java.lang.NoClassDefFoundError：org.apache.commons.codec。 digest.DigestUtils 05-13 19:11:47.665: E/AndroidRuntime(7288): at org.apache.poi.hssf.usermodel.HSSFWorkbook.addPicture(HSSFWorkbook.java:1580) 05-13 19:11:47.665: E /AndroidRuntime(7288): 在 com.android.testexcel.MyWorkBook.writeImageToExcel(MyWorkBook.java:30) 05-13 19:11:47.665: E/AndroidRuntime(7288): 在 com.android.testexcel.MainActivity.onClick( MainActivity.java:71) 05-13 19:11:47.665: E/AndroidRuntime(7288): 在 android.view.View.performClick(View.java:2408) 05-13 19:11:47.665: E/AndroidRuntime( 7288): 在 android.view.View$PerformClick.run(View.java:8816) 05-13 19:11:47.665: E/AndroidRuntime(7288): 在 android.os.Handler.handleCallback(Handler.java:587) 05-13 19:11:47.665: E/AndroidRuntime(7288): 在 android.os.Handler.dispatchMessage(Handler.java:92) 05-13 19:11:47.665: E/AndroidRuntime(7288) : 在 android.os.Looper.loop(Looper.java:123) 05-13 19:11:47.665: E/AndroidRuntime(7288): 在 android.app.ActivityThread.main(ActivityThread.java:4627) 05-13 19:11:47.665: E/AndroidRuntime(7288): 在 java.lang.reflect.Method.invokeNative(Native Method) 05-13 19:11:47.665: E/AndroidRuntime(7288): 在 java.lang.reflect。 Method.invoke(Method.java:521) 05-13 19:11:47.665: E/AndroidRuntime(7288): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 05-13 19:11:47.665: E/AndroidRuntime(7288): 在 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 05-13 19:11:47.665: E/AndroidRuntime(7288): 在 dalvik .system.NativeStart。主要（本机方法）

提前致谢，赫曼特

4

1 回答 1

0

您的错误的关键部分是：

java.lang.NoClassDefFoundError: org.apache.commons.codec.digest.DigestUtils

您需要确保在项目中包含公共编解码器。有关 POI 所有不同位的依赖项列表，请参阅Apache POI 组件页面。（或者，如果您使用 Maven，它会为您处理）

于 2012-05-13T20:16:58.943 回答