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add method

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This commit is contained in:
Looly 2021-03-14 09:42:49 +08:00
parent ff23934b24
commit 2337e3a367
1 changed files with 39 additions and 1 deletions
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40
hutool-core/src/main/java/cn/hutool/core/io/IoUtil.java
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@ -386,7 +386,17 @@ public class IoUtil extends NioUtil {
* @since 5.5.3
*/
public static FastByteArrayOutputStream read(InputStream in, boolean isClose) throws IORuntimeException {
final FastByteArrayOutputStream out = new FastByteArrayOutputStream();
final FastByteArrayOutputStream out;
if(in instanceof FileInputStream){
// 文件流的长度是可预见的，此时直接读取效率更高
try {
out = new FastByteArrayOutputStream(in.available());
} catch (IOException e) {
throw new IORuntimeException(e);
}
} else{
out = new FastByteArrayOutputStream();
}
try {
copy(in, out);
} finally {
@ -794,9 +804,23 @@ public class IoUtil extends NioUtil {
* @since 4.0.10
*/
public static BufferedInputStream toBuffered(InputStream in) {
Assert.notNull(in, "InputStream must be not null!");
return (in instanceof BufferedInputStream) ? (BufferedInputStream) in : new BufferedInputStream(in);
}
/**
* 转换为{@link BufferedInputStream}
*
* @param in {@link InputStream}
* @param bufferSize buffer size
* @return {@link BufferedInputStream}
* @since 5.6.1
*/
public static BufferedInputStream toBuffered(InputStream in, int bufferSize) {
Assert.notNull(in, "InputStream must be not null!");
return (in instanceof BufferedInputStream) ? (BufferedInputStream) in : new BufferedInputStream(in, bufferSize);
}
/**
* 转换为{@link BufferedOutputStream}
*
@ -805,9 +829,23 @@ public class IoUtil extends NioUtil {
* @since 4.0.10
*/
public static BufferedOutputStream toBuffered(OutputStream out) {
Assert.notNull(out, "OutputStream must be not null!");
return (out instanceof BufferedOutputStream) ? (BufferedOutputStream) out : new BufferedOutputStream(out);
}
/**
* 转换为{@link BufferedOutputStream}
*
* @param out {@link OutputStream}
* @param bufferSize buffer size
* @return {@link BufferedOutputStream}
* @since 5.6.1
*/
public static BufferedOutputStream toBuffered(OutputStream out, int bufferSize) {
Assert.notNull(out, "OutputStream must be not null!");
return (out instanceof BufferedOutputStream) ? (BufferedOutputStream) out : new BufferedOutputStream(out, bufferSize);
}
/**
* 将{@link InputStream}转换为支持mark标记的流<br>
* 若原流支持mark标记，则返回原流，否则使用{@link BufferedInputStream} 包装之