基于Java语言的Android课程设计源码课件

package com.baselib.android.utils; import com.alibaba.fastjson.util.IOUtils; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.CharArrayWriter; import java.io.Closeable; import java.io.EOFException; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.io.Reader; import java.io.Writer; import java.net.HttpURLConnection; import java.net.ServerSocket; import java.net.Socket; import java.net.URI; import java.net.URL; import java.net.URLConnection; import java.nio.ByteBuffer; import java.nio.channels.ReadableByteChannel; import java.nio.channels.Selector; import java.nio.charset.Charset; import java.util.ArrayList; import java.util.List; public class IOUtil { public static final int EOF = -1; public static final char DIR_SEPARATOR_UNIX = '/'; public static final char DIR_SEPARATOR_WINDOWS = '\\'; public static final String LINE_SEPARATOR_UNIX = "\n"; public static final String LINE_SEPARATOR_WINDOWS = "\r\n"; private static final int DEFAULT_BUFFER_SIZE = 4096; private static final int SKIP_BUFFER_SIZE = 2048; private static char[] SKIP_CHAR_BUFFER; private static byte[] SKIP_BYTE_BUFFER; public IOUtil() { } public static void close(URLConnection conn) { if (conn instanceof HttpURLConnection) { ((HttpURLConnection) conn).disconnect(); } } /** * @deprecated */ @Deprecated public static void closeQuietly(Reader input) { closeQuietly((Closeable) input); } /** * @deprecated */ @Deprecated public static void closeQuietly(Writer output) { closeQuietly((Closeable) output); } /** * @deprecated */ @Deprecated public static void closeQuietly(InputStream input) { closeQuietly((Closeable) input); } /** * @deprecated */ @Deprecated public static void closeQuietly(OutputStream output) { closeQuietly((Closeable) output); } /** * @deprecated */ @Deprecated public static void closeQuietly(Closeable closeable) { try { if (closeable != null) { closeable.close(); } } catch (IOException var2) { } } /** * @deprecated */ @Deprecated public static void closeQuietly(Closeable... closeables) { if (closeables != null) { Closeable[] var1 = closeables; int var2 = closeables.length; for (int var3 = 0; var3 < var2; ++var3) { Closeable closeable = var1[var3]; closeQuietly(closeable); } } } /** * @deprecated */ @Deprecated public static void closeQuietly(Socket sock) { if (sock != null) { try { sock.close(); } catch (IOException var2) { } } } /** * @deprecated */ @Deprecated public static void closeQuietly(Selector selector) { if (selector != null) { try { selector.close(); } catch (IOException var2) { } } } /** * @deprecated */ @Deprecated public static void closeQuietly(ServerSocket sock) { if (sock != null) { try { sock.close(); } catch (IOException var2) { } } } public static BufferedReader toBufferedReader(Reader reader) { return reader instanceof BufferedReader ? (BufferedReader) reader : new BufferedReader(reader); } public static BufferedReader toBufferedReader(Reader reader, int size) { return reader instanceof BufferedReader ? (BufferedReader) reader : new BufferedReader(reader, size); } public static BufferedReader buffer(Reader reader) { return reader instanceof BufferedReader ? (BufferedReader) reader : new BufferedReader(reader); } public static BufferedReader buffer(Reader reader, int size) { return reader instanceof BufferedReader ? (BufferedReader) reader : new BufferedReader(reader, size); } public static BufferedWriter buffer(Writer writer) { return writer instanceof BufferedWriter ? (BufferedWriter) writer : new BufferedWriter(writer); } public static BufferedWriter buffer(Writer writer, int size) { return writer instanceof BufferedWriter ? (BufferedWriter) writer : new BufferedWriter(writer, size); } public static BufferedOutputStream buffer(OutputStream outputStream) { if (outputStream == null) { throw new NullPointerException(); } else { return outputStream instanceof BufferedOutputStream ? (BufferedOutputStream) outputStream : new BufferedOutputStream(outputStream); } } public static BufferedOutputStream buffer(OutputStream outputStream, int size) { if (outputStream == null) { throw new NullPointerException(); } else { return outputStream instanceof BufferedOutputStream ? (BufferedOutputStream) outputStream : new BufferedOutputStream(outputStream, size); } } public static BufferedInputStream buffer(InputStream inputStream) { if (inputStream == null) { throw new NullPointerException(); } else { return inputStream instanceof BufferedInputStream ? (BufferedInputStream) inputStream : new BufferedInputStream(inputStream); } } public static BufferedInputStream buffer(InputStream inputStream, int size) { if (inputStream == null) { throw new NullPointerException(); } else { return inputStream instanceof BufferedInputStream ? (BufferedInputStream) inputStream : new BufferedInputStream(inputStream, size); } } public static byte[] toByteArray(InputStream input) throws IOException { ByteArrayOutputStream output = new ByteArrayOutputStream(); Throwable var2 = null; byte[] var3; try { copy((InputStream) input, (OutputStream) output); var3 = output.toByteArray(); } catch (Throwable var12) { var2 = var12; throw var12; } finally { if (output != null) { if (var2 != null) { try { output.close(); } catch (Throwable var11) { var2.addSuppressed(var11); } } else { output.close(); } } } return var3; } public static byte[] toByteArray(InputStream input, long size) throws IOException { if (size > 2147483647L) { throw new IllegalArgumentException("Size cannot be greater than Integer max value: " + size); } else { return toByteArray(input, (int) size); } } public static byte[] toByteArray(InputStream input, int size) throws IOException { if (size < 0) { throw new IllegalArgumentException("Size must be equal or greater than zero: " + size); } else if (size == 0) { return new byte[0]; } else { byte[] data = new byte[size]; int offset; int read; for (offset = 0; offset < size && (read = input.read(data, offset, size - offset)) != -1; offset += read) { } if (offset != size) { throw new IOException("Unexpected read size. current: " + offset + ", expected: " + size); } else { return data; } } } /**