I want to write a Object into CSV file.
For XML we have XStream like this
So if i want to convert object to CSV do we have any such library ?
EDIT: I w
I wrote a simple class that uses OpenCSV and has two static public methods.
static public File toCSVFile(Object object, String path, String name) {
File pathFile = new File(path);
pathFile.mkdirs();
File returnFile = new File(path + name);
try {
CSVWriter writer = new CSVWriter(new FileWriter(returnFile));
writer.writeNext(new String[]{"Member Name in Code", "Stored Value", "Type of Value"});
for (Field field : object.getClass().getDeclaredFields()) {
writer.writeNext(new String[]{field.getName(), field.get(object).toString(), field.getType().getName()});
}
writer.flush();
writer.close();
return returnFile;
} catch (IOException e) {
Log.e("EasyStorage", "Easy Storage toCSVFile failed.", e);
return null;
} catch (IllegalAccessException e) {
Log.e("EasyStorage", "Easy Storage toCSVFile failed.", e);
return null;
}
}
static public void fromCSVFile(Object object, File file) {
try {
CSVReader reader = new CSVReader(new FileReader(file));
String[] nextLine = reader.readNext(); // Ignore the first line.
while ((nextLine = reader.readNext()) != null) {
if (nextLine.length >= 2) {
try {
Field field = object.getClass().getDeclaredField(nextLine[0]);
Class> rClass = field.getType();
if (rClass == String.class) {
field.set(object, nextLine[1]);
} else if (rClass == int.class) {
field.set(object, Integer.parseInt(nextLine[1]));
} else if (rClass == boolean.class) {
field.set(object, Boolean.parseBoolean(nextLine[1]));
} else if (rClass == float.class) {
field.set(object, Float.parseFloat(nextLine[1]));
} else if (rClass == long.class) {
field.set(object, Long.parseLong(nextLine[1]));
} else if (rClass == short.class) {
field.set(object, Short.parseShort(nextLine[1]));
} else if (rClass == double.class) {
field.set(object, Double.parseDouble(nextLine[1]));
} else if (rClass == byte.class) {
field.set(object, Byte.parseByte(nextLine[1]));
} else if (rClass == char.class) {
field.set(object, nextLine[1].charAt(0));
} else {
Log.e("EasyStorage", "Easy Storage doesn't yet support extracting " + rClass.getSimpleName() + " from CSV files.");
}
} catch (NoSuchFieldException e) {
Log.e("EasyStorage", "Easy Storage fromCSVFile failed.", e);
} catch (IllegalAccessException e) {
Log.e("EasyStorage", "Easy Storage fromCSVFile failed.", e);
}
} // Close if (nextLine.length >= 2)
} // Close while ((nextLine = reader.readNext()) != null)
} catch (FileNotFoundException e) {
Log.e("EasyStorage", "Easy Storage fromCSVFile failed.", e);
} catch (IOException e) {
Log.e("EasyStorage", "Easy Storage fromCSVFile failed.", e);
} catch (IllegalArgumentException e) {
Log.e("EasyStorage", "Easy Storage fromCSVFile failed.", e);
}
}
I think with some simple recursion these methods could be modified to handle any Java object, but for me this was adequate.