package txt;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.io.UnsupportedEncodingException;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

/**

 * 功能描写叙述：创建TXT文件并进行读、写、改动操作

 * @author lizhiyong

 * @version $Id: ReadWriteFile.java, v 0.1

		2014年8月5日 下午1:27:38 Exp $

 */

public class ReadWriteFile {

    //指定文件路径和名称

    private static String path     = "C:/測试.txt";

    private static File   filename = new File(path);

    private static String readStr  = "    ";

    /**

     * 创建文本文件.

     * @throws IOException

     *

     */

    public static void creatTxtFile() throws IOException {

        if (!filename.exists()) {

            filename.createNewFile();

            System.err.println(filename + "已创建！

");

        } else {

            filename.delete();

            creatTxtFile();

        }

    }

    /**

     * 读取文本文件.

     * @throws UnsupportedEncodingException

     *

     */

    @SuppressWarnings("resource")

    public static String readTxtFile() throws UnsupportedEncodingException {

        String readData = null;

        //BufferedReader br = null;

        BufferedReader br = null;

        try {

            //br = new BufferedReader(new InputStreamReader(new FileInputStream(filename)));

            br = new BufferedReader(new FileReader(filename));

            try {

                while ((readData = br.readLine()) != null) {

                    System.out.println("readData:" + readData);

                    readStr = readStr + readData + "\r\n";

                }

            } catch (IOException e) {

                e.printStackTrace();

            }

        } catch (FileNotFoundException e) {

            e.printStackTrace();

        }

        System.out.println("文件内容2是:" + "\r\n" + readStr);

        return readStr;

    }

    /**

     * 给文件写内容.

     * @param content  写入的文件内容

     * @throws IOException

     */

    @SuppressWarnings({ "rawtypes", "unchecked" })

    public static void writeTxtFile(List contentList, HashMap<String, String> map)

                                                                                  throws IOException {

        //先读取原有文件内容。然后进行写入操作

        FileWriter writer = null;

        String filein = map.get("1") + readStr + map.get("2") + readStr + map.get("3") + readStr

                        + map.get("4");

        try {

            writer = new FileWriter(filename, true);

            writer.write(filein);

        } catch (IOException e1) {

            e1.printStackTrace();

        } finally {

            if (writer != null) {

                try {

                    writer.close();

                } catch (IOException e2) {

                    e2.printStackTrace();

                }

            }

        }

        for (Iterator iterator = contentList.iterator(); iterator.hasNext();) {

            HashMap<String, String> map2 = (HashMap<String, String>) iterator.next();

            String name = map2.get("name");

            String age = map2.get("age");

            String postion = map2.get("postion");

            String complit = map2.get("complit");

            String filein1 = "\r\n" + name + readStr + age + readStr + postion + readStr + complit

                             + "\r\n";

            try {

                writer = new FileWriter(filename, true);

                writer.write(filein1);

            } catch (Exception e) {

                e.printStackTrace();

            } finally {

                if (writer != null) {

                    try {

                        writer.close();

                    } catch (IOException e2) {

                        e2.printStackTrace();

                    }

                }

            }

        }

        readTxtFile();

    }

    /**

     * 将文件里指定内容的第一行替换为其他内容.

     *

     * @param oldStr

     *            查找内容

     * @param replaceStr

     *            替换内容

     */

    @SuppressWarnings("unused")

    public static void replaceTxtByStr(String oldStr, String replaceStr) {

        String temp = "";

        try {

            File file = new File(path);

            FileInputStream fis = new FileInputStream(file);

            InputStreamReader isr = new InputStreamReader(fis);

            BufferedReader br = new BufferedReader(isr);

            StringBuffer buf = new StringBuffer();

            // 保存该行前面的内容

            for (int j = 1; (temp = br.readLine()) != null && !temp.equals(oldStr); j++) {

                buf = buf.append(temp);

                buf = buf.append(System.getProperty("line.separator"));

            }

            // 将内容插入

            buf = buf.append(replaceStr);

            // 保存该行后面的内容

            while ((temp = br.readLine()) != null) {

                buf = buf.append(System.getProperty("line.separator"));

                buf = buf.append(temp);

            }

            br.close();

            FileOutputStream fos = new FileOutputStream(file);

            PrintWriter pw = new PrintWriter(fos);

            pw.write(buf.toString().toCharArray());

            pw.flush();

            pw.close();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

    /**

     * main方法測试

     * @param s

     * @throws IOException

     */

    @SuppressWarnings({ "rawtypes", "unchecked" })

    public static void main(String[] s) throws IOException {

        ReadWriteFile.creatTxtFile();

        //ReadWriteFile.readTxtFile();

        List list = new ArrayList();

        HashMap<String, String> map = new HashMap<String, String>();

        map.put("1", "姓名");

        map.put("2", "年龄");

        map.put("3", "职位");

        map.put("4", "工作单位");

        HashMap<String, String> map2 = new HashMap<String, String>();

        map2.put("name", "李四");

        map2.put("age", "25");

        map2.put("postion", "Java开发project师");

        map2.put("complit", "上海汽车財务集团有限公司");

        list.add(map2);

        HashMap<String, String> map3 = new HashMap<String, String>();

        map3.put("name", "李四1");

        map3.put("age", "251");

        map3.put("postion", "Java开发project师1");

        map3.put("complit", "上海汽车財务集团有限公司1");

        list.add(map3);

        ReadWriteFile.writeTxtFile(list, map);

        //        ReadWriteFile.replaceTxtByStr("ken", "zhang");

    }

}