package file;

import java.io.*;

/**
 * io文件操作
 *
 * @author ZwT
 * @date 2018年05月21日 15:33
 **/
public class IOFile {
 public void writeAndRead(){
 /*创建目录和文件以及写入内容*/
 File file = new File("tmp");
 /*创建tmp目录*/
 file.mkdir();
 if(file.isDirectory()){
 System.out.println(file.getName()+"目录创建成功");
 File file1 = new File(file.getPath()+"/zwt.text");
 if(!file1.exists()){
 try {
 file1.createNewFile();
 System.out.println(file1.getName()+"文件创建成功");
 /*写入内容*/
 OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream(file1.getPath()),"UTF-8");
 BufferedWriter bw = new BufferedWriter(osw);
 bw.write("我爱你!\r\n");
 bw.write("夏梅!");
 /*关闭流*/
 bw.close();
 osw.close();
 } catch (FileNotFoundException e) {
 e.printStackTrace();
 } catch (IOException e) {
 e.printStackTrace();
 System.out.println(file1.getName()+"文件创建失败");
 }
 }
 }

 /*读取目录和文件和内容*/
 File file1 = new File(file.getPath());
 /*判断是否是目录*/
 if(file1.isDirectory()){
 System.out.println(file.getName()+"是一个目录");
 File[] files = file1.listFiles();
 for(File tmpFile : files){
 /*判断是否是文件*/
 if(tmpFile.isFile()){
 System.out.println(tmpFile.getName()+"是一个文件");
 /*读取文件内容*/
 try {
 InputStreamReader read = new InputStreamReader(new FileInputStream(tmpFile),"UTF-8");
 BufferedReader br = new BufferedReader(read);
 StringBuffer content=new StringBuffer("");
 String line;
 int len = 0;
 while ((line = br.readLine())!=null){
 if(len == 0){
 content.append(line);
 }else{
 content.append("\r\n"+line);
 }
 len++;
 }
 read.close();
 br.close();
 System.out.println(content);

 } catch (FileNotFoundException e) {
 e.printStackTrace();
 } catch (IOException e) {
 e.printStackTrace();
 }
 }
 }
 }else{
 System.out.println(file.getName()+"不是一个目录");
 }
 }

}