Java InputStreamReader和OutputStreamWriter

很想把这两个类的用法记下来，因为它们是我在Reader和Writer类层次结构中找到仅有的可以指定字符编码集（Charset）的输入输出类。这里两个类分别举一个例子来说明它俩的用法，它们分别作为InputStream和OutputStream的装饰者。

public void test1() {InputStream in;Charset charset = Charset.forName("UTF-8");try {in = new FileInputStream("test1.txt");// charset指定的是字符流原来的字符编码集Reader reader = new InputStreamReader(in, charset);int temp;while ((temp = reader.read()) != -1) {char c = (char) temp;System.out.print(c);}} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}

public void test2() {Charset charset = Charset.forName("UTF-8");try {OutputStream outputStream = new FileOutputStream("test1.txt");// charset指定的是字符流输出的字符编码集Writer writer = new OutputStreamWriter(outputStream, charset);writer.write("<span><span class="string">liyuncong wangfang 李</span></span>");writer.flush();} catch (IOException  e) {// TODO Auto-generated catch blocke.printStackTrace();}}

这种方式，同样可以正确处理辅助字符。