import java.io.BufferedReader;
import java.io.File; import java.io.FileInputStream;import java.io.FileOutputStream; import java.io.FileWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.RandomAccessFile; import java.util.Arrays;import java.io.FileNotFoundException;public class communication {
public static void main(String[] args){ int i=0,j=0; String content="GBK"; String filePath ="d:/lgq.txt"; readTxtFile(filePath); String person1 = "A:";String fileName1 ="D:/A.txt";
String fileName2 ="D:/B.txt";String[] arrs1= new String[30];
String[] arrs2= new String[30]; String str1 = new String(); //原有txt内容try {
String encoding=content;
File file=new File(filePath); if(file.isFile() && file.exists()){ //判断文件是否存在InputStreamReader read = new InputStreamReader(
new FileInputStream(file),encoding);//考虑到编码格式 BufferedReader bufferedReader = new BufferedReader(read); String lineTxt = null;while((lineTxt = bufferedReader.readLine()) != null){
System.out.println(lineTxt);
if (lineTxt.contains(person1)){ arrs1[i]=lineTxt;i++;
}else { arrs2[j]=lineTxt; j++; } } System.out.println(Arrays.toString(arrs1)); System.out.println(Arrays.toString(arrs2)); read.close(); }else{ System.out.println("找不到指定的文件"); } } catch (Exception e) { System.out.println("读取文件内容出错"); e.printStackTrace(); } try {File f1 = new File(fileName1);
createFile(fileName1); // 建立输出字节流 FileWriter fos = null; try { fos = new FileWriter(f1); } catch (FileNotFoundException e) { e.printStackTrace(); } // 用FileWriter 的write方法写入字节数组 try { for(int tmp1=0;tmp1<arrs1.length;tmp1++){ if(arrs1[tmp1]!=null){ fos.write(arrs1[tmp1]); fos.write("\r\n"); } } } catch (IOException e) { e.printStackTrace(); } System.out.println("写入成功"); // 为了节省IO流的开销，需要关闭 try { fos.close(); } catch (IOException e) {e.printStackTrace();
} }catch (IOException e){ e.printStackTrace(); } System.out.println(str1); try {File f2 = new File(fileName2);
createFile(fileName2); // 建立输出字节流 FileWriter fos2 = null; try { fos2 = new FileWriter(f2); } catch (FileNotFoundException e) { e.printStackTrace(); } // 用FileOutputStream 的write方法写入字节数组 try { for(int tmp2=0;tmp2<arrs1.length;tmp2++){ if(arrs2[tmp2]!=null){ fos2.write(arrs2[tmp2]); fos2.write("\r\n"); } } } catch (IOException e) { e.printStackTrace(); } System.out.println("写入成功"); // 为了节省IO流的开销，需要关闭 try { fos2.close(); } catch (IOException e){ e.printStackTrace(); } } catch (IOException e){ e.printStackTrace(); }// String a=new String [i];// for( j=0;j<i;j++){ // if((String a[i]= bufferedReader.readLine())){// }
// }// System.out.println(Arrays.toString(a));
//创建目录 // String dirName = "D:/work/temp/temp0/temp1"; // String dirName = "D:";// communication.createDir(dirName); //创建文件 // String fileName = dirName + "/temp2/tempFile.txt"; //创建临时文件 // String prefix = "temp"; /* * String suffix = ".txt"; * for (int i = 0; i < 10; i++) { * System.out.println("创建了临时文件：" * + communication.createTempFile(suffix, dirName)); * } * //在默认目录下创建临时文件 * for (int i = 0; i < 10; i++) { * System.out.println("在默认目录下创建了临时文件：" * + communication.createTempFile(p suffix, null)); * } */ } /** * 读TXT文件内容 * @param fileName * @return */ public static void readTxtFile(String filePath){try {
String encoding="GBK";
File file=new File(filePath); if(file.isFile() && file.exists()){ //判断文件是否存在InputStreamReader read = new InputStreamReader(
new FileInputStream(file),encoding);//考虑到编码格式 BufferedReader bufferedReader = new BufferedReader(read); String lineTxt = null;while((lineTxt = bufferedReader.readLine()) != null){
System.out.println(lineTxt);
}read.close();
}else{ System.out.println("找不到指定的文件"); } } catch (Exception e) { System.out.println("读取文件内容出错"); e.printStackTrace(); }}
/**
* 创建文件 * @param fileName * @return */ public static boolean createFile(String filename) { File file = new File(filename); if(file.exists()) { System.out.println("创建单个文件" + filename + "失败，目标文件已存在！"); return false; } if (filename.endsWith(File.separator)) { System.out.println("创建单个文件" + filename + "失败，目标文件不能为目录！"); return false; } //判断目标文件所在的目录是否存在 if(!file.getParentFile().exists()) { //如果目标文件所在的目录不存在，则创建父目录 System.out.println("目标文件所在目录不存在，准备创建它！"); if(!file.getParentFile().mkdirs()) { System.out.println("创建目标文件所在目录失败！"); return false; } } //创建目标文件 try { if (file.createNewFile()) { System.out.println("创建单个文件" + filename + "成功！"); return true; } else { System.out.println("创建单个文件" + filename + "失败！"); return false; } } catch (IOException e) { e.printStackTrace(); System.out.println("创建单个文件" + filename + "失败！" + e.getMessage()); return false; } } public static boolean createDir(String destDirName) { File dir = new File(destDirName); if (dir.exists()) { System.out.println("创建目录" + destDirName + "失败，目标目录已经存在"); return false; } if (!destDirName.endsWith(File.separator)) { destDirName = destDirName + File.separator; } //创建目录 if (dir.mkdirs()) { System.out.println("创建目录" + destDirName + "成功！"); return true; } else { System.out.println("创建目录" + destDirName + "失败！"); return false; } } public static boolean writeTxtFile(String content,File fileName)throws Exception{ RandomAccessFile mm=null; boolean flag=false; FileOutputStream o=null; try { o = new FileOutputStream(fileName); o.write(content.getBytes("GBK")); o.close(); // mm=new RandomAccessFile(fileName,"rw"); // mm.writeBytes(content); flag=true; } catch (Exception e) { e.printStackTrace(); }finally{ if(mm!=null){ mm.close(); } } return flag; }}