按编码格式读写文件

  

package com.hpli.demo;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

 
public class FileUtil {  
 
 /**
  * 根据编码集创建
  * @param file
  * @param content
  * @param encodType
  * @throws IOException
  */
    public static void createFile(String file, String content, String encodType)  
            throws IOException {  
        FileOutputStream writerStream = new FileOutputStream(file);  
        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(  
                writerStream, encodType));  
        writer.write(content);  
        writer.close();  
    }  
 
    /**
     * 读取文件内容
     * @param file
     * @param encodType
     * @return
     * @throws IOException
     */
    public static String getContent(String file, String encodType)  
            throws IOException {  
        //"xx\r\n" read -> "xx"  
        StringBuffer content = new StringBuffer();  
        FileInputStream fis = new FileInputStream(file);  
        DataInputStream dis = new DataInputStream(fis);  
        BufferedReader br = new BufferedReader(new InputStreamReader(dis,  
                encodType));  
        String line = null;  
        if((line = br.readLine()) != null){  
            content.append(line);  
        }  
        while ((line = br.readLine()) != null) {  
            content.append("\r\n" + line);  
        }  
        br.close();  
        dis.close();  
        fis.close();  
        return content.toString();  
    }  
 
    public static void main(String[] args) throws IOException {  
         String str = "耦嬡沵哋 尒尒婀焱暒妏恻鉽嗵過";  
         createFile("F:/cnt1.txt", str, "UTF-8");  
         createFile("F:/cnt2.txt", str, "GBK");  
         String con1 = getContent("F:/cnt1.txt", "UTF-8");  
         System.out.println(con1);  
         String con2 = getContent("F:/cnt2.txt", "GBK");  
         System.out.println(con2);  
    }  
}