Module develop.toolkit.base

Package develop.toolkit.base.utils

Class IOAdvice

java.lang.Object

develop.toolkit.base.utils.IOAdvice

public final class IOAdvice
extends Object

输入输出流增强

Author:

qiushui on 2019-02-21.

Constructor Summary

Constructors

Constructor	Description
IOAdvice()

Method Summary

Modifier and Type	Method	Description
static void	appendLines(List<String> lines, String filename)	追加文本行
static void	appendLines(List<String> lines, String filename, Charset charset)	追加文本行
static long	copyQuietly(File source, File target)	安静地复制文件
static void	copyText(InputStream inputStream, OutputStream outputStream, Charset charset, Function<String,String> function)	复制文本
static void	printFile(String filename, Charset charset)	打印文件
static void	printInputStream(InputStream inputStream)	打印流文件
static void	printInputStream(InputStream inputStream, Charset charset)	打印流文件
static InputStream	readInputStreamFromClasspath(String filename)	从classpath读流
static Stream<String>	readLines(InputStream inputStream)	文本流读取行
static Stream<String>	readLines(InputStream inputStream, Charset charset)	文本流读取行
static Stream<String>	readLines(String filename)	文件读取行
static Stream<String>	readLines(String filename, Charset charset)	文件读取行
static Stream<String>	readLinesFromClasspath(String filename)	从classpath读取文件
static Stream<String>	readLinesFromClasspath(String filename, Charset charset)	从classpath读取文件
static String	readText(InputStream inputStream)	读取文本
static String	readText(InputStream inputStream, Charset charset)	读取文本
static String	readTextFromClasspath(String filename)	从classpath读取文本
static String	readTextFromClasspath(String filename, Charset charset)	从classpath读取文本
static long	sliceBytes(int bufferSize, long offset, long chunkSize, InputStream in, OutputStream out)	截取输入流中某一段的字节数据
static Stream<String[]>	splitFromClasspath(String filename, String regex)	从classpath读取文件并每行用regex切分
static <T> Stream<T>	splitFromClasspath(String filename, String regex, Class<T> clazz)	从classpath读取文件并每行用regex切分，然后装填到实体类
static <K, T> ListInMap<K,T>	splitGroupingFormClasspath(String filename, String regex, Class<T> clazz, Function<T,K> keyFunction)	从classpath读取文件并每行用regex切分，装填到实体类，然后按keyFunction分组
static <K, V, T> ListInMap<K,V>	splitGroupingFormClasspath(String filename, String regex, Class<T> clazz, Function<T,K> keyFunction, Function<T,V> valueFunction)	从classpath读取文件并每行用regex切分，装填到实体类，然后按keyFunction分组
static <K> ListInMap<K,String[]>	splitGroupingFormClasspath(String filename, String regex, Function<String[],K> keyFunction)	从classpath读取文件并每行用regex切分，然后按keyFunction分组
static <K, V> ListInMap<K,V>	splitGroupingFormClasspath(String filename, String regex, Function<String[],K> keyFunction, Function<String[],V> valueFunction)	从classpath读取文件并每行用regex切分，然后按keyFunction分组
static <K> Map<K,String[]>	splitGroupingUniqueFormClasspath(String filename, String regex, Function<String[],K> keyFunction)	从classpath读取文件并每行用regex切分，然后按keyFunction分组，明确值是唯一的
static <K, V> Map<K,V>	splitGroupingUniqueFormClasspath(String filename, String regex, Function<String[],K> keyFunction, Function<String[],V> valueFunction)	从classpath读取文件并每行用regex切分，然后按keyFunction分组，明确值是唯一的
static byte[]	toByteArray(InputStream inputStream)	转换成字节数组
static byte[]	toByteArrayFromClasspath(String filename)	转换成字节数组
static void	writeLines(List<String> lines, OutputStream outputStream, Charset charset)	写出文本行
static void	writeLines(List<String> lines, String filename)	写出文本行到文件
static void	writeLines(List<String> lines, String filename, Charset charset)	写出文本行到文件

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

IOAdvice

public IOAdvice()

Method Details

toByteArray

public static byte[] toByteArray(InputStream inputStream)

转换成字节数组

toByteArrayFromClasspath

public static byte[] toByteArrayFromClasspath(String filename)

转换成字节数组

readLines

public static Stream<String> readLines(String filename)

文件读取行

readLines

public static Stream<String> readLines(String filename,
 Charset charset)

文件读取行

readLines

public static Stream<String> readLines(InputStream inputStream)

文本流读取行

readLines

public static Stream<String> readLines(InputStream inputStream,
 Charset charset)

文本流读取行

readInputStreamFromClasspath

public static InputStream readInputStreamFromClasspath(String filename)

从classpath读流

readLinesFromClasspath

public static Stream<String> readLinesFromClasspath(String filename,
 Charset charset)

从classpath读取文件

readLinesFromClasspath

public static Stream<String> readLinesFromClasspath(String filename)

从classpath读取文件

splitFromClasspath

public static Stream<String[]> splitFromClasspath(String filename,
 String regex)

从classpath读取文件并每行用regex切分

splitFromClasspath

public static <T> Stream<T> splitFromClasspath(String filename,
 String regex,
 Class<T> clazz)

从classpath读取文件并每行用regex切分，然后装填到实体类

splitGroupingFormClasspath

public static <K> ListInMap<K,String[]> splitGroupingFormClasspath(String filename,
 String regex,
 Function<String[],K> keyFunction)

从classpath读取文件并每行用regex切分，然后按keyFunction分组

splitGroupingUniqueFormClasspath

public static <K> Map<K,String[]> splitGroupingUniqueFormClasspath(String filename,
 String regex,
 Function<String[],K> keyFunction)

从classpath读取文件并每行用regex切分，然后按keyFunction分组，明确值是唯一的

splitGroupingFormClasspath

public static <K,
T> ListInMap<K,T> splitGroupingFormClasspath(String filename,
 String regex,
 Class<T> clazz,
 Function<T,K> keyFunction)

从classpath读取文件并每行用regex切分，装填到实体类，然后按keyFunction分组

splitGroupingFormClasspath

public static <K,
V> ListInMap<K,V> splitGroupingFormClasspath(String filename,
 String regex,
 Function<String[],K> keyFunction,
 Function<String[],V> valueFunction)

从classpath读取文件并每行用regex切分，然后按keyFunction分组

splitGroupingFormClasspath

public static <K,
V,
T> ListInMap<K,V> splitGroupingFormClasspath(String filename,
 String regex,
 Class<T> clazz,
 Function<T,K> keyFunction,
 Function<T,V> valueFunction)

从classpath读取文件并每行用regex切分，装填到实体类，然后按keyFunction分组

splitGroupingUniqueFormClasspath

public static <K,
V> Map<K,V> splitGroupingUniqueFormClasspath(String filename,
 String regex,
 Function<String[],K> keyFunction,
 Function<String[],V> valueFunction)

从classpath读取文件并每行用regex切分，然后按keyFunction分组，明确值是唯一的

readText

public static String readText(InputStream inputStream,
 Charset charset)

读取文本

readText

public static String readText(InputStream inputStream)

读取文本

readTextFromClasspath

public static String readTextFromClasspath(String filename,
 Charset charset)

从classpath读取文本

readTextFromClasspath

public static String readTextFromClasspath(String filename)

从classpath读取文本

writeLines

public static void writeLines(List<String> lines,
 String filename,
 Charset charset)

写出文本行到文件

writeLines

public static void writeLines(List<String> lines,
 String filename)

写出文本行到文件

writeLines

public static void writeLines(List<String> lines,
 OutputStream outputStream,
 Charset charset)

写出文本行

appendLines

public static void appendLines(List<String> lines,
 String filename,
 Charset charset)

追加文本行

appendLines

public static void appendLines(List<String> lines,
 String filename)

追加文本行

copyText

public static void copyText(InputStream inputStream,
 OutputStream outputStream,
 Charset charset,
 Function<String,String> function)

复制文本

copyQuietly

public static long copyQuietly(File source,
 File target)

安静地复制文件

printFile

public static void printFile(String filename,
 Charset charset)

打印文件

printInputStream

public static void printInputStream(InputStream inputStream,
 Charset charset)

打印流文件

printInputStream

public static void printInputStream(InputStream inputStream)

打印流文件

sliceBytes

public static long sliceBytes(int bufferSize,
 long offset,
 long chunkSize,
 InputStream in,
 OutputStream out)
                       throws IOException

截取输入流中某一段的字节数据

Parameters:

bufferSize - 缓冲区大小

offset - 偏移量

chunkSize - 截取块大小

in - 输入流

out - 输出流

Throws:

IOException - IO异常