转自http://zhangbaoming815.iteye.com/blog/1578438

将字符串写入到txt文件中import java.io.BufferedWriter;

import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.FileWriter;import java.io.IOException;import java.io.PrintStream;import java.io.PrintWriter;import java.io.RandomAccessFile;public class WriteStringToTxt {    public void WriteStringToFile(String filePath) {        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();        }    }    public void WriteStringToFile2(String filePath) {        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();        }    }    public void WriteStringToFile3(String filePath) {        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();        }    }    public void WriteStringToFile4(String filePath) {        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();        }    }    public void WriteStringToFile5(String filePath) {        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();        }    }    public static void main(String[] args) {        String filePath = "E:\\link.txt";        // new WriteStringToTxt().WriteStringToFile(filePath);        // new WriteStringToTxt().WriteStringToFile2(filePath);        // new WriteStringToTxt().WriteStringToFile3(filePath);        // new WriteStringToTxt().WriteStringToFile4(filePath);        new WriteStringToTxt().WriteStringToFile5(filePath);    }}