原来的代码如下所示，但是输出的内容都是乱码
public void readLine(String path) {InputStreamReader isr = null;BufferedReader br = null;try {isr = new InputStreamReader(new FileInputStream(path));br = new BufferedReader(isr);String str;// 通过readLine()方法按行读取字符串while ((str = br.readLine()) != null) {System.out.println(str);}} catch (IOException e) {e.printStackTrace();} finally {// 统一在finally中关闭流，防止发生异常的情况下，文件流未能正常关闭try {if (br != null) {br.close();}if (isr != null) {isr.close();}} catch (IOException e) {e.printStackTrace();}}}
解决办法是在创建InputStreamReader对象的时候指定文件的编码
我先用EditPlus打开文件，在右下角可以看到文件的编码为ANSI，但是在代码中设置编码为ANS后却报Unknown encoding:'ANSI'错误
凭借以往的经验，Window中中文编码一般为GBK，设置后果然不报红，而且运行后也能够成功输出中文了
以下为修改后正常运行的代码
public void readLine(String path) {InputStreamReader isr = null;BufferedReader br = null;try {isr = new InputStreamReader(new FileInputStream(path), "GBK");br = new BufferedReader(isr);String str;// 通过readLine()方法按行读取字符串while ((str = br.readLine()) != null) {System.out.println(str);}} catch (IOException e) {e.printStackTrace();} finally {// 统一在finally中关闭流，防止发生异常的情况下，文件流未能正常关闭try {if (br != null) {br.close();}if (isr != null) {isr.close();}} catch (IOException e) {e.printStackTrace();}}}
