public String readTxtFile(String filePath) {
StringBuffer appInfolistInput = new StringBuffer();
try {
String encoding = "UTF8";
File file = new File(filePath);
if (file.isFile() && file.exists()) {
InputStreamReader read = new InputStreamReader(
new FileInputStream(file), encoding);
BufferedReader bufferedReader = new BufferedReader(read);
String lineTxt = null;
while ((lineTxt = bufferedReader.readLine()) != null) {
appInfolistInput.append(lineTxt);
}
read.close();
bufferedReader.close();
} else {
System.out.println("找不到指定的文件");
}
} catch (Exception e) {
System.out.println("读取文件内容出错");
e.printStackTrace();
}
return appInfolistInput.toString();
}
public void readByte(String fileName) {
InputStream is = null;
try {
is = new FileInputStream(fileName);
byte[] byteBuffer = new byte[is.available()];
int read = 0;
while((read = is.read(byteBuffer)) != -1){
System.out.write(byteBuffer, 0, read);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
if(is != null){
is.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
public void writeBuffer(String fileName){
try {
File file = new File(fileName);
BufferedWriter output = new BufferedWriter(new FileWriter(file));
output.write("hello wrold");
output.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public void writeByte(String fileName){
try {
File file = new File(fileName);
OutputStream os = new FileOutputStream(file);
String s = "hello world";
byte[] byteBuffer = s.getBytes();
os.write(byteBuffer, 0, byteBuffer.length);
os.flush();
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}