Question

java将字符串str保存在txt中，txt里面内容，str放在txt最后一行的下面

网上搜的资料都是str替换 txt内容，这对我来说不行哦，txt内容必须原有保存...

Answer 1

/**
* 添加写入
* @param path 写入文件路径
* @param str 写入内容
* @return
* @throws IOException
*/
public boolean writerAdd(String path,String str) throws IOException {
File file = new File(path);
BufferedOutputStream bout = null;
try {
OutputStream out = new FileOutputStream(file,true);
bout = new BufferedOutputStream(out);
bout.write(str.getBytes());
bout.flush();
} catch (IOException e) {
e.printStackTrace();
throw e;
} finally {
if (bout != null) {
bout.close();
}
}
return true;
}

Answer 2

PrintWriter pw = null;
String content ="this is test";
FileOutputStream fos = new FileOutputStream("c:\\1.txt", true);//续写
pw = new PrintWriter(fos);
pw.println(content);
pw.close();
这样就可以续写到指定文件的最后一行

Answer 3

JDK的帮助文档啊 文件输出输入流 看看嘛 file

Answer 4

实现追加?