java检测磁盘空间

来源：互联网发布：上海软件学院编辑：程序博客网时间：2024/06/01 08:45
package study.disk;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.util.Locale;/** * 检查磁盘空间是否可用的线程 * djk * */public class CheckDiskThread extends Thread{/** * 获得当前操作系统的名称 */    private static String osName = System.getProperty("os.name").toUpperCase(Locale.getDefault());    /**     * 系统用户所在分区默认剩余空间     */    private static String diskAvail = "10240000";        /**     * 是否启动     */    private boolean runFlag = true;@Overridepublic void run() {if (!osName.startsWith("WINDOWS"))        {while(runFlag){                BufferedReader breader = null;                String diskInfo = null;                String[] content = null;                                try                {                    sleep(1000);                                        String command = "df " + "/home/djk";                                        //执行查询磁盘空间命令                    Process process = Runtime.getRuntime().exec(command);                                        //获得执行命令的输入流                    breader = new BufferedReader(new InputStreamReader(process.getInputStream()));                                        //过滤无用信息                    breader.readLine();                                        /**                     * 离线文件目录磁盘分区信息                     * 第一种情况:本地磁盘                     * Filesystem           1K-blocks      Used Available Use% Mounted on                     * /dev/sda2             20972152  18964652   2007500  91% /                     *                      * 第二种情况:挂载磁盘                     * Filesystem           1K-blocks      Used Available Use% Mounted on                     * 10.70.136.21:/home/umlog                     *                        41944384  17026880  24917504  41% /home/downbilldir                     */                    diskInfo = breader.readLine();                                        if (null != diskInfo)                    {                        content = diskInfo.split("\\s+");                                                //保证取到磁盘"可利用的"空间信息                        while (null != content && content.length < 3)                        {                            diskInfo = breader.readLine();                            if (null != diskInfo)                            {                                content = diskInfo.split("\\s+");                            }                        }                    }                }                catch (InterruptedException e1)                {                e1.printStackTrace();                }                catch (IOException e)                {                e.printStackTrace();                }                finally                {                    if (null != breader)                    {                        try                        {                            breader.close();                        }                        catch (IOException e)                        {                        }                    }                }                                if (null != content && content.length >= 3)                {                    //设置实际的磁盘剩余空间大小                    setDiskAvail(content[3]);                }            }        }else        {        System.out.println("not support windows os....");        }}public static String getDiskAvail() {return diskAvail;}public static void setDiskAvail(String diskAvail) {CheckDiskThread.diskAvail = diskAvail;}}
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