Java IO流->处理流->转换流：InputStreamReader&OutputStreamWriter

图一：

示例代码：

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;

import org.junit.Test;

public class TestOtherStream {
	/**
	 * 如何实现 字节流 与 字符流 之间的转换？
	 * 转换流：InputStreamReader	OutputStreamWriter
	 * 解码：字节数组	->	字符串
	 * 编码：字符串	->	字节数组
	 */
	@Test
	public void test1() {
		BufferedReader br = null;
		BufferedWriter bw = null;
		try {
			//解码
			File file1 = new File("testOtherStream.txt");
			FileInputStream fis = new FileInputStream(file1);
			InputStreamReader isr = new InputStreamReader(fis, "GBK");
			br = new BufferedReader(isr);
			
			//编码
			File file2 = new File("testOtherStream2.txt");
			FileOutputStream fos = new FileOutputStream(file2);
			OutputStreamWriter osw = new OutputStreamWriter(fos, "GBK");
			bw = new BufferedWriter(osw);
			
			String str;
			while((str = br.readLine()) != null) {
				bw.write(str);
				bw.newLine();
				bw.flush();
			}
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		} 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();
				}
			}
		}
		
	}
}