/*
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* Copyright (c) 2018-2028, DreamLu All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* Neither the name of the dreamlu.net developer nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* Author: DreamLu 卢春梦 (596392912@qq.com)
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*/
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package org.springblade.core.tool.utils;
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import org.springframework.lang.Nullable;
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import java.io.*;
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import java.nio.charset.Charset;
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/**
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* 流工具类
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*
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* @author L.cm
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*/
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public class IoUtil extends org.springframework.util.StreamUtils {
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/**
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* closeQuietly
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*
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* @param closeable 自动关闭
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*/
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public static void closeQuietly(@Nullable Closeable closeable) {
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if (closeable == null) {
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return;
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}
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if (closeable instanceof Flushable) {
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try {
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((Flushable) closeable).flush();
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} catch (IOException ignored) {
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// ignore
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}
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}
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try {
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closeable.close();
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} catch (IOException ignored) {
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// ignore
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}
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}
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/**
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* InputStream to String utf-8
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*
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* @param input the <code>InputStream</code> to read from
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* @return the requested String
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*/
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public static String readToString(InputStream input) {
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return readToString(input, Charsets.UTF_8);
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}
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/**
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* InputStream to String
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*
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* @param input the <code>InputStream</code> to read from
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* @param charset the <code>Charset</code>
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* @return the requested String
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*/
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public static String readToString(@Nullable InputStream input, Charset charset) {
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try {
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return IoUtil.copyToString(input, charset);
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} catch (IOException e) {
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throw Exceptions.unchecked(e);
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} finally {
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IoUtil.closeQuietly(input);
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}
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}
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public static byte[] readToByteArray(@Nullable InputStream input) {
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try {
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return IoUtil.copyToByteArray(input);
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} catch (IOException e) {
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throw Exceptions.unchecked(e);
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} finally {
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IoUtil.closeQuietly(input);
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}
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}
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/**
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* Writes chars from a <code>String</code> to bytes on an
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* <code>OutputStream</code> using the specified character encoding.
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* <p>
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* This method uses {@link String#getBytes(String)}.
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* </p>
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* @param data the <code>String</code> to write, null ignored
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* @param output the <code>OutputStream</code> to write to
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* @param encoding the encoding to use, null means platform default
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* @throws NullPointerException if output is null
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* @throws IOException if an I/O error occurs
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*/
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public static void write(@Nullable final String data, final OutputStream output, final Charset encoding) throws IOException {
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if (data != null) {
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output.write(data.getBytes(encoding));
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}
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}
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}
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