Java：获取网络资源文件的文件大小
package com.example.util;
import org.apache.commons.io.FileUtils;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
/**
* 文件相关工具类
*/
public class FileUtil {
/**
* 获取网络文件的大小
* @param fileUrl
* @return
*/
public static int getFileSize(String fileUrl) {
if (fileUrl == null || "".equals(fileUrl)) {
return 0;
}
int fileSize = 0;
URL url = null;
URLConnection conn = null;
try {
url = new URL(fileUrl);
} catch (MalformedURLException e) {
e.printStackTrace();
}
if (url != null) {
try {
conn = url.openConnection();
} catch (IOException e) {
e.printStackTrace();
}
}
if (conn != null) {
fileSize = conn.getContentLength();
}
return fileSize;
}
}