Java基础巩固系列 InputStreamReader与OutputStreamWriter （转换流）

示意图：

代码示例：

[code]public class TestOtherStream {

/**
* 如何实现字节流与字符流之间的转换：
* 转换流：InputStreamReader  OutputStreamWriter
* 编码：字符串    ---->  字节数组
* 解码：字节数组  ---->  字符串
*/
@Test
public void test1() {
BufferedReader br = null;
BufferedWriter bw = null;
try {
//解码
File file = new File("hello.txt");
FileInputStream fis = new FileInputStream(file); //字节输入流
InputStreamReader isr = new InputStreamReader(fis, "GBK"); //把字节输入流存到输入流读取器
br = new BufferedReader(isr);   //缓冲字符输入流 读取 输入流读取器
//编码
File file1 = new File("hello2.txt");
FileOutputStream fos = new FileOutputStream(file1); //字节输出流
OutputStreamWriter osw = new OutputStreamWriter(fos, "GBK");    //字节输出流存到输出流编写器
bw = new BufferedWriter(osw);   //缓冲字符输出流 读取 输出流编写器
String str;
while ((str = br.readLine()) != null) {
bw.write(str);
bw.newLine();
bw.flush();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (bw != null){
try {
bw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (br != null){
try {
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}