java 读取文件

//  String openWinAdvleftJS=Util.getPropertiesVal("picInfoPath");
        String openWinAdvleftJS = "E:\\\u9996\u4FE1\\\u8D22\u653F\u5C40\\other\\\u5F39\u51FA\u6846\\\u7EFC\u5408\u529E\u516C\u5E73\u53F0\\advleft.js";
        System.out.println(openWinAdvleftJS);

        StringBuffer sb =  new StringBuffer();

        InputStreamReader fr =  null;
         try {
            fr =  new InputStreamReader( new FileInputStream(openWinAdvleftJS),"gb2312");
             int ch = 0;
             while ((ch = fr.read()) != -1) {
                sb.append(( char)ch);
            }
        }  catch (IOException e) {
            e.printStackTrace();
        }  finally {
             if (fr !=  null) {
                 try {
                    fr.close();
                }  catch (IOException e1) {
                }
            }
        }

        System.out.println(sb.toString());
        
        System.out.println("////");