import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
public class FileTest {
public static void main(String[] args) {
splitDataToSaveFile(4, "E:\\pss_2017\\psdp-tsdata-datahub\\src\\main\\resources\\test.txt",
"E:\\pss_2017\\psdp-tsdata-datahub\\src\\main\\resources\\");
* 按行分割文件
* @param rows
* 为多少行一个文件
* @param sourceFilePath
* 为源文件路径
* @param targetDirectoryPath
* 文件分割后存放的目标目录
public static void splitDataToSaveFile(int rows, String sourceFilePath, String targetDirectoryPath) {
File sourceFile = new File(sourceFilePath);
File targetFile = new File(targetDirectoryPath);
if (!sourceFile.exists() || rows <= 0 || sourceFile.isDirectory()) {
return;
if (targetFile.exists()) {
if (!targetFile.isDirectory()) {
return;
} else {
targetFile.mkdirs();
try {
InputStreamReader in = new InputStreamReader(new FileInputStream(sourceFilePath), "GBK");
BufferedReader br = new BufferedReader(in);
BufferedWriter bw = null;
String str = "";
String tempData = br.readLine();
int i = 1, s = 0;
while (tempData != null) {
str += tempData + "\r\n";
if (i % rows == 0) {
bw = new BufferedWriter(new OutputStreamWriter(
new FileOutputStream(targetFile.getAbsolutePath() + "/" + sourceFile.getName() + "_" + (s + 1) + ".txt"), "UTF-8"), 1024);
bw.write(str);
bw.close();
str = "";
s += 1;
tempData = br.readLine();
if ((i - 1) % rows != 0) {
bw = new BufferedWriter(
new OutputStreamWriter(
new FileOutputStream(targetFile.getAbsolutePath() + "/" + sourceFile.getName() + "_" + (s + 1) + ".txt"), "UTF-8"),
1024);
bw.write(str);
bw.close();
br.close();
s += 1;
in.close();
} catch (Exception e) {
