Java 读取某文件下的所有文件的大小 并将所有文件的文件名，以及对应大小输出在xls表格里
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.List;
public class DocCountSize {
public static void main(String[] args) {
List<Bean> data = new ArrayList<Bean>();
//输入一个路径
String path="C:\\\\Program Files\\\\Java\\\\jre1.8.0_131\\\\bin\\\\dtplugin";
getFile(data, path);
save(data);
System.out.println("统计完毕");
}
private static void save(List<Bean> data) {
OutputStream os = null;
OutputStreamWriter osw = null;
try {
//将统计的数据大小统计为文件 路径
os = new FileOutputStream(new File("C:/d1.csv"));
osw = new OutputStreamWriter(os, "GBK");
for (Bean bean : data) {
osw.write(bean + "\r\n");
}
osw.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (os != null) {
try {
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
if (osw != null) {
try {
osw.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
private static void getFile(List<Bean> data, String path) {
File f = new File(path);
File[] fs = f.listFiles();
if (fs == null) {
return;
}
for (File file : fs) {
//将统计的文件的字节数 转换为k 方便计算大小
if (file.isFile()) {
data.add(new Bean(file.getParentFile().getAbsolutePath(), file.getName(), (int) (getFileSize(file)/1024)));
} else {
getFile(data, file.getAbsolutePath());
}
}
}
private static int getFileSize(File f) {
InputStream fis = null;
try {
fis = new FileInputStream(f);
int docsize=fis.available();
return docsize;
} catch (Exception e) {
e.printStackTrace();
} finally {
if (fis != null) {
try {
fis.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
return 0;
}
}
class Bean {
private String filePath;
private String fileName;
private int size;
public Bean(String filePath, String fileName, int size) {
this.filePath = filePath;
this.fileName = fileName;
this.size = size;
}
public String getFilePath() {
return filePath;
}
public void setFilePath(String filePath) {
this.filePath = filePath;
}
public String getFileName() {
return fileName;
}
public void setFileName(String fileName) {
this.fileName = fileName;
}
public int getSize() {
return size;
}
public void setSize(int size) {
this.size = size;
}
// public String toString() {
// return filePath + "," + fileName + "," + size + "K";
// }
public String toString() {
return filePath + "," + fileName + "," + size;
}
}