我的资源文件夹中有一个xls文件,我想使用jexcelapi库打开它。我已将文件的路径设置为(" file:///android_asset/jxlrwtest.xls"),甚至尝试使用New->在我的根文件夹中创建一个具有不同名称的xls文件。文件并直接访问它但仍然得到错误java.io.FileNotFoundException"(没有这样的文件或目录)"每次我运行模拟器。我还确保每次尝试移动文件时都刷新路径。我读完excel文件的全班都是
package com.example.kirikedictionary;
import java.io.File;
import java.io.IOException;
import android.app.Activity;
import android.content.Context;
import jxl.Cell;
import jxl.CellType;
import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;
public class ReadExcel {
private String inputFile;
protected Context context;
public ReadExcel(Context context){
this.context = context.getApplicationContext();
}
public void setInputFile(String inputFile) {
this.inputFile = inputFile;
}
public void read() throws IOException {
File inputWorkbook = new File(inputFile);
Workbook w;
try {
w = Workbook.getWorkbook(inputWorkbook);
// Get the first sheet
Sheet sheet = w.getSheet(0);
// Loop over first 10 column and lines
for (int j = 0; j < sheet.getColumns(); j++) {
for (int i = 0; i < sheet.getRows(); i++) {
Cell cell = sheet.getCell(j, i);
CellType type = cell.getType();
if (type == CellType.LABEL) {
System.out.println("I got a label "
+ cell.getContents());
}
if (type == CellType.NUMBER) {
System.out.println("I got a number "
+ cell.getContents());
}
}
}
} catch (BiffException e) {
e.printStackTrace();
}
}
public void main(String[] args) throws IOException {
ReadExcel test = new ReadExcel(context);
test.setInputFile("file:///android_asset/jxlrwtest.xls");
test.read();
}
}
和我一直得到的错误是
12-30 01:36:59.386:W / System.err(1851):java.io.FileNotFoundException: file:/android_asset/jxlrwtest.xls:open failed:ENOENT(没有这样的文件 或目录)12-30 01:36:59.393:W / System.err(1851):at libcore.io.IoBridge.open(IoBridge.java:456)12-30 01:36:59.393: W / System.err(1851):at java.io.FileInputStream。(FileInputStream.java:76)12-30 01:36:59.394:W / System.err(1851):at jxl.Workbook.getWorkbook(Workbook.java:213)12-30 01:36:59.394: W / System.err(1851):at jxl.Workbook.getWorkbook(Workbook.java:198) 12-30 01:36:59.394:W / System.err(1851):at com.example.kirikedictionary.ReadExcel.read(ReadExcel.java:33)12-30 01:36:59.394:W / System.err(1851):at com.example.kirikedictionary.ReadExcel.main(ReadExcel.java:62)12-30 01:36:59.394:W / System.err(1851):at com.example.kirikedictionary.MainActivity $ 3.onItemClick(MainActivity.java:148) 12-30 01:36:59.394:W / System.err(1851):at android.widget.AdapterView.performItemClick(AdapterView.java:300) 12-30 01:36:59.395:W / System.err(1851):at android.widget.AbsListView.performItemClick(AbsListView.java:1143) 12-30 01:36:59.416:W / System.err(1851):at android.widget.AbsListView $ PerformClick.run(AbsListView.java:3044) 12-30 01:36:59.416:W / System.err(1851):at android.widget.AbsListView $ 3.run(AbsListView.java:3833)12-30 01:36:59.416:W / System.err(1851):at android.os.Handler.handleCallback(Handler.java:739)12-30 01:36:59.417:W / System.err(1851):at android.os.Handler.dispatchMessage(Handler.java:95)12-30 01:36:59.432:W / System.err(1851):at android.os.Looper.loop(Looper.java:135)12-30 01:36:59.432: W / System.err(1851):at android.app.ActivityThread.main(ActivityThread.java:5221)12-30 01:36:59.432:W / System.err(1851):at java.lang.reflect.Method.invoke(Native Method)12-30 01:36:59.432: W / System.err(1851):at java.lang.reflect.Method.invoke(Method.java:372)12-30 01:36:59.433: W / System.err(1851):at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:899) 12-30 01:36:59.433:W / System.err(1851):at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)12-30 01:36:59.433:W / System.err(1851):引起: android.system.ErrnoException:open failed:ENOENT(没有这样的文件或 目录)12-30 01:36:59.434:W / System.err(1851):at libcore.io.Posix.open(Native Method)12-30 01:36:59.435: W / System.err(1851):at libcore.io.BlockGuardOs.open(BlockGuardOs.java:186)12-30 01:36:59.451:W / System.err(1851):at libcore.io.IoBridge.open(IoBridge.java:442)12-30 01:36:59.452: W / System.err(1851):... 18更多
请帮忙,因为我不想使用外部SD卡文件而且我已经被困在这里一段时间了。
答案 0 :(得分:5)
您只能将file:/// android_asset / someName用作WebView的URL。 它不是文件系统识别的文件名。
使用Context.getAssets获取AssetManger实例,并使用AssetManager.open获取资产文件的InputStream。
如果您需要提供File实例,请将资产中的文件复制到应用程序的私人目录中。