将字符串写进txt中方式

try {
File file = new File(filePath);
PrintStream ps = new PrintStream(new FileOutputStream(file));
ps.println("http://www.docin.com/p-315288370.html");// 往文件里写入字符串
ps.append("http://www.docin.com/p-315288370.html");// 在已有的基础上添加字符串
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

try {
FileWriter fw = new FileWriter(filePath, true);
BufferedWriter bw = new BufferedWriter(fw);
bw.append("在已有的基础上添加字符串");
bw.write("abc\r\n ");// 往已有的文件上添加字符串
bw.write("def\r\n ");
bw.write("hijk ");
bw.close();
fw.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

try {
PrintWriter pw = new PrintWriter(new FileWriter(filePath));
pw.println("abc ");
pw.println("def ");
pw.println("hef ");
pw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

try {
RandomAccessFile rf = new RandomAccessFile(filePath, "rw");
rf.writeBytes("op\r\n");
rf.writeBytes("app\r\n");
rf.writeBytes("hijklllll");
rf.close();
} catch (IOException e) {
e.printStackTrace();
}

try {
FileOutputStream fos = new FileOutputStream(filePath);
String s = "http://www.docin.com/p-315288370.html";
fos.write(s.getBytes());
fos.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}