读取写入文件内容

读取文件内容

private String getEmailBody(String lang, String mobile, String refnumber){

        ClassLoader cl;
        
        String str = "";
        InputStream is = null;
        BufferedReader in = null;
        
        try{
            cl = Thread.currentThread().getContextClassLoader();
            if (lang == null){
                lang="chi";
            }
            
            if (lang.equals("chi")){
                is = cl.getResourceAsStream("com/mmt/mail/mailBody.html");
            }else{
                is = cl.getResourceAsStream("com/mmt/mail/mailBody_en.html");
            }
            
            in = new BufferedReader(new InputStreamReader(is, "UTF-8"));

            String temp;
            while ((temp = in.readLine()) != null) {
                str += temp + "\r\n";
            }

            str = str.replaceAll("%%mobile%%", mobile).replaceAll("%%refnumber%%", refnumber);
            str = str.trim();
            
        }catch(Exception e){
            e.printStackTrace();
        }finally{
            try{in.close();in=null;}catch(Exception e){}
            try{is.close();is=null;}catch(Exception e){}
            cl=null;
        }

        return str;
    }
			

读取文件内容2

 /**
     * 以行为单位读取文件，常用于读面向行的格式化文件
     */
    public static boolean readFileByLines(File file) {
    	boolean b = false;
        BufferedReader reader = null;
        FileInputStream fis = null;
        InputStreamReader isr = null;
        try {
        	List<List<Object>> marList = new ArrayList<List<Object>>();
//            System.out.println("以行为单位读取文件内容，一次读一整行：");
            String tempString = null;
//            String html = "";
            int line = 1;
            fis  =   new  FileInputStream( file );
            isr  =   new  InputStreamReader(fis,  "UTF-8" );
            reader  =   new  BufferedReader(isr);
            
            // 一次读入一行，直到读入null为文件结束
            while ((tempString  =  reader.readLine()) != null) {
                // 显示行号
//                System.out.println("line " + line + ": " + tempString);
            	if (line > 2) {
            		String actual_on_air_date = tempString.substring(1, 9);
            		String hard_start_flag = tempString.substring(9, 10);
            		String actual_on_air_time = tempString.substring(10, 21);
            		String material_id = tempString.substring(22, 54);
            		String segment_number = tempString.substring(55, 57);
            		String title = tempString.substring(58, 90);
            		String actual_duration = tempString.substring(91, 102);
            		String status = tempString.substring(103, 110);
            		String on_air_device = tempString.substring(111, 119);
            		String channel = tempString.substring(120, 123);
            		String event_type = tempString.substring(123, 130);
            		String secondary_type = tempString.substring(131, 135);
//					System.out.println(actual_on_air_date);
//					System.out.println(hard_start_flag);
//					System.out.println(actual_on_air_time);
//					System.out.println(material_id);
//					System.out.println(segment_number);
//					System.out.println(title);
//					System.out.println(actual_duration);
//					System.out.println(status);
//					System.out.println(on_air_device);
//					System.out.println(channel);
//					System.out.println(event_type);
//					System.out.println(secondary_type);
            		List<Object> list = new ArrayList<Object>();
            		list.add(actual_on_air_date);
            		list.add(hard_start_flag);
            		list.add(actual_on_air_time);
            		list.add(material_id);
            		list.add(segment_number);
            		list.add(title);
            		list.add(actual_duration);
            		list.add(status);
            		list.add(on_air_device);
            		list.add(channel);
            		list.add(event_type);
            		list.add(secondary_type);
            		marList.add(list);
				}
//            	html += tempString;
                line++;
            }
            reader.close();
            
            if(marList.size() > 0){
            	AsRunService as = new AsRunService();
            	b = as.addAsRunLogBatch(marList);
            	if (b) {
					System.out.println("add asrun log success...");
				}else{
					System.out.println("add asrun log failure...");
				}
            }
            
//            BufferedWriter output = new BufferedWriter(new FileWriter(new File(PropertiesUtils.getProperties("asrunbak")+"/123.txt")));
//            output.write(html);
//            output.close();
            
        } catch (IOException e) {
            e.printStackTrace();
            b = false;
        } finally {
            if (reader != null) {
                try {reader.close();} catch (IOException e1) { }
                try {isr.close();} catch (IOException e1) { }
                try {fis.close();} catch (IOException e1) { }
            }
        }
        return b;
    }

写入文件

/**
	 * 文件保存
	 * 
	 * @param file
	 *            要保存的文件
	 * @param path
	 *            保存的文件路径
	 * @param fileName
	 *            文件名称
	 * @return boolean
	 */
	public static boolean saveFile(File file, String path, String fileName) {
		boolean b = false;
		try {
			String root = ServletActionContext.getRequest().getRealPath("/") + PropertiesUtils.getProperties("oao_media_path")+path;
//			String root = PropertiesUtils.getProperties("oao_media_path")+path;
			System.out.println(root);
			File f = new File(path);
			if (!f.isDirectory()) {
				f.mkdirs();
			}
			InputStream is = new FileInputStream(file);
			File destFile = new File(root, fileName);
			OutputStream os = new FileOutputStream(destFile);
			byte[] buffer = new byte[1025];

			int length = 0;
			while ((length = is.read(buffer)) > 0) {
				os.write(buffer, 0, length);
			}
			is.close();
			os.close();
			b = true;
		} catch (Exception e) {
			b = false;
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return b;
	}

	/**
	 * 
	 * 用FileWrite向文件写入内容
	 * 
	 * 
	 * 
	 * @param _destFile
	 * 
	 * @throws IOException
	 */

	public static void writeByFileWrite(String _sDestFile, String _sContent)

	throws IOException {

		FileWriter fw = null;

		try {

			fw = new FileWriter(_sDestFile);
			fw.write(_sContent);

		} catch (Exception ex) {

			ex.printStackTrace();

		} finally {

			if (fw != null) {

				fw.close();

				fw = null;

			}

		}

	}

	/**
	 * 
	 * 用FileOutputStream向文件写入内容
	 * 
	 * 
	 * 
	 * @param _destFile
	 * 
	 * @throws IOException
	 */

	public static void writeByFileOutputStream(String _sDestFile,

	String _sContent) throws IOException {

		FileOutputStream fos = null;

		try {

			fos = new FileOutputStream(_sDestFile);

			fos.write(_sContent.getBytes());

		} catch (Exception ex) {

			ex.printStackTrace();

		} finally {

			if (fos != null) {

				fos.close();

				fos = null;

			}

		}

	}

	/**
	 * 
	 * 用OutputStreamWrite向文件写入内容
	 * 
	 * 
	 * 
	 * @param _destFile
	 * 
	 * @throws IOException
	 */

	public static void writeByOutputStreamWrite(String _sDestFile,

	String _sContent) throws IOException {

		OutputStreamWriter os = null;

		FileOutputStream fos = null;

		try {

			fos = new FileOutputStream(_sDestFile);

			os = new OutputStreamWriter(fos, "UTF-8");

			os.write(_sContent);

		} catch (Exception ex) {

			ex.printStackTrace();

		} finally {

			if (os != null) {

				os.close();

				os = null;

			}

			if (fos != null) {

				fos.close();

				fos = null;

			}

		}

	}