/**
* 将文本输入流写入一个文本输出流。块大小为 8192
*
* <p><b style=color:red>注意</b>，它会关闭输入/出流
*
* @param writer 输出流
* @param reader 输入流
*/
public static void writeAndClose(Writer writer, Reader reader) {
try {
write(writer, reader);
} catch (IOException e) {
throw Lang.wrapThrow(e);
} finally {
safeClose(writer);
safeClose(reader);
}
}
/**
* 将输入流写入一个输出流。块大小为 8192
*
* <p><b style=color:red>注意</b>，它会关闭输入/出流
*
* @param ops 输出流
* @param ins 输入流
* @return 写入的字节数
*/
public static long writeAndClose(OutputStream ops, InputStream ins) {
try {
return write(ops, ins);
} catch (IOException e) {
throw Lang.wrapThrow(e);
} finally {
safeClose(ops);
safeClose(ins);
}
}
/**
* 将一段文本全部写入一个writer。
*
* <p><b style=color:red>注意</b>，它会关闭输出流
*
* @param writer 输出流
* @param cs 文本
*/
public static void writeAndClose(Writer writer, CharSequence cs) {
try {
write(writer, cs);
} catch (IOException e) {
throw Lang.wrapThrow(e);
} finally {
safeClose(writer);
}
}
/**
* 从一个文本流中读取全部内容并返回
*
* <p><b style=color:red>注意</b>，它会关闭输入流
*
* @param reader 文本输入流
* @return 文本内容
* @throws IOException
*/
public static String readAndClose(Reader reader) {
try {
return read(reader).toString();
} catch (IOException e) {
throw Lang.wrapThrow(e);
} finally {
safeClose(reader);
}
}
/**
* 将一个字节数组写入一个输出流。
*
* <p><b style=color:red>注意</b>，它会关闭输出流
*
* @param ops 输出流
* @param bytes 字节数组
*/
public static void writeAndClose(OutputStream ops, byte[] bytes) {
try {
write(ops, bytes);
} catch (IOException e) {
throw Lang.wrapThrow(e);
} finally {
safeClose(ops);
}
}
/**
* 从一个流读取数据库配置
*
* @param in 输入流,包含配置信息
* @throws IOException 读取失败是抛出异常
*/
public void init(InputStream in) throws IOException {
Properties props = new Properties();
try {
props.load(in);
init(props);
} finally {
Streams.safeClose(in);
}
}
/**
* 将一段字符串写入一个文本输出流，并将该流关闭
*
* @param writer 文本输出流
* @param str 字符串
*/
public static void writeAll(Writer writer, String str) {
try {
writer.write(str);
writer.flush();
} catch (IOException e) {
throw Lang.wrapThrow(e);
} finally {
Streams.safeClose(writer);
}
}
public static void appendWriteAndClose(File f, String text) {
FileWriter fw = null;
try {
fw = new FileWriter(f, true);
fw.write(text);
} catch (IOException e) {
throw Lang.wrapThrow(e);
} finally {
safeClose(fw);
}
}
/**
* 读取一个输入流中所有的字节，并关闭输入流
*
* @param ins 输入流，必须支持 available()
* @return 一个字节数组
* @throws IOException
*/
public static byte[] readBytesAndClose(InputStream ins) {
byte[] bytes = null;
try {
bytes = readBytes(ins);
} catch (IOException e) {
throw Lang.wrapThrow(e);
} finally {
Streams.safeClose(ins);
}
return bytes;
}
// 判断编译等级
public static boolean isJDK6() {
InputStream is = null;
try {
String classFileName = "/" + Lang.class.getName().replace('.', '/') + ".class";
is = Lang.class.getClassLoader().getResourceAsStream(classFileName);
if (is != null && is.available() > 8) {
is.skip(7);
return is.read() > 49;
}
} catch (Throwable e) {
} finally {
Streams.safeClose(is);
}
return false;
}
public static void loadProperties(String fileName) {
InputStream is = null;
try {
pp = new Properties();
File f = Files.findFile(fileName);
if (f == null) throw new RuntimeException("nutz-test.properties Not FOUND!!!");
is = Streams.fileIn(f);
pp.load(is);
pp.list(System.out);
} catch (Exception e) {
throw Lang.wrapThrow(e);
} finally {
Streams.safeClose(is);
}
}
/**
* 从一个文本输入流读取所有内容，并将该流关闭
*
* @param reader 文本输入流
* @return 输入流所有内容
*/
public static String readAll(Reader reader) {
if (!(reader instanceof BufferedReader)) reader = new BufferedReader(reader);
try {
StringBuilder sb = new StringBuilder();
char[] data = new char[64];
int len;
while (true) {
if ((len = reader.read(data)) == -1) break;
sb.append(data, 0, len);
}
return sb.toString();
} catch (IOException e) {
throw Lang.wrapThrow(e);
} finally {
Streams.safeClose(reader);
}
}