ftp.zip_FTP客户 服务_ftp客户端 服务_ftp服务端_java ftp服务器

package com.tarena.Util; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.Arrays; public class IOUtil { /** * 将text追加到文件 filename的尾部 使用系统默认文本编码 */ public static void println(String filename, String text) throws IOException { println(new File(filename), text); } public static void println(File file, String text) throws IOException { OutputStream out = new FileOutputStream( file, true); println(out, text); out.close(); } /** * 向流中输出一行字符串, 使用默认编码 不关闭流 * * @param out * 目标流 * @param text * 文本 * @throws IOException */ public static void println(OutputStream out, String text) throws IOException { out.write(text.getBytes()); out.write('\n'); out.flush(); } /** * 向流中输出一行字符串, 使用指定的编码 不关闭流 * * @param out * 目标流 * @param text * 文本 * @param charset * 指定的编码 * @throws IOException */ public static void println(OutputStream out, String text, String charset) throws IOException { out.write(text.getBytes(charset)); out.write('\n'); } /** * 从流中读取一行文本, 读取到一行的结束为止 * * @param in * @return 一行文本 */ public static String readLine( InputStream in, String charset) throws IOException { byte[] buf = {}; int b; while (true) { b = in.read(); if (b == '\n' || b == '\r' || b == -1) {// 编码是否是回车换行 break; } buf = Arrays.copyOf(buf, buf.length + 1); buf[buf.length - 1] = (byte) b; } if (buf.length == 0 && b == -1) return null; return new String(buf, charset); } public static String readLine(InputStream in) throws IOException { ByteArrayOutputStream out = new ByteArrayOutputStream(); int b; while (true) { b = in.read(); if (b == '\n' || b == '\r' || b == -1) {// 编码是否是回车换行 break; } out.write(b); } return new String(out.toByteArray()); } /** 复制文件, 复制in到out, 不关闭流 */ public static void cp(InputStream in, OutputStream out) throws IOException { byte[] buf = new byte[1024 * 512];// 512K缓冲 int count; while ((count = in.read(buf)) != -1) {// 读取到buf // System.out.println(count);// out.write(buf, 0, count); // 写入到输出流 } out.flush(); // 刷出缓冲到目标流 } /** 不开缓冲 */ public static void cp2(InputStream in, OutputStream out) throws IOException { int b; while ((b = in.read()) != -1) { // 读取一个byte out.write(b); // 写入到输出流 } out.flush(); // 刷出缓冲到目标流 } }