我想把“明朝的那些事儿.txt”这个文件分成若干个小文件，代码如下，不过这个代码生成的小文件打开之后是乱码，我用的是Winddows操作系统，明朝的那些事儿.txt 的编码方式是GB2312，我知道是BufferedWriter的默认编码方式UTF-8造成的错误，但不知道如何作改，请教高手，谢谢
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
/**
- @author ht
- 预处理
-
/
public class FilePreprocess {
public static void main(String[] arg){
String outputpath = "D:\test\small\";//小文件存放路径
String filename = "D:\test\明朝的那些事儿.txt";//原文件存放路径
if(!new File(outputpath).exists()){
new File(outputpath).mkdirs();
}
splitToSmallFiles(new File(filename), outputpath);
}
/*大文件切割为小的
- @param file
-
@param outputpath
*/
public static void splitToSmallFiles(File file ,String outputpath){
int filePointer = 0;
int MAX_SIZE = 10240;
String filename = "output";BufferedWriter writer = null;
try {
BufferedReader reader = new BufferedReader(new FileReader(file));
StringBuffer buffer = new StringBuffer();
String line = reader.readLine();
while(line != null){
buffer.append(line).append("\r\n");
if(buffer.toString().getBytes().length>=MAX_SIZE){
writer = new BufferedWriter(new FileWriter(outputpath+filename+filePointer+".txt"));
writer.write(buffer.toString());
writer.close();
filePointer++;
buffer=new StringBuffer();
}
line = reader.readLine();
}
writer = new BufferedWriter(new FileWriter(outputpath+filename+filePointer+".txt"));
writer.write(buffer.toString());
writer.close();
System.out.println("The file hava splited to small files !");
} catch (FileNotFoundException e) {
System.out.println("file not found !");
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
