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java 实现控制windows系统音量

所需windows的控件

链接：https://pan.baidu.com/s/1oXMBlTisy-1wcr5tY4WNhQ
提取码：09it

将音量控件放到所需控制的windows操作系统，c:\Windows\System32目录下

::将音量控件放到相应目录下
xcopy %cd%\msvcr120d.dll c:\Windows\System32\ /y /r /e

调用代码如下

try {
    //单例模式
    VolumeControl vc = VolumeControl.getInstance();
    //设置音量值
    vc.setMasterVolume(Integer.parseInt(volume));
    log.warn("设置终端音量值为：" + volume+"成功！");
} catch (OperationFailedException e) {
    log.warn("设置终端音量值为：" + volume+"失败！error:"+e);
    throw e;
}
VolumeControl工具类代码如下
  1 package com.xianquan.common.volume;
  2 
  3 /**
  4  * 该类设计为单例模式 提供控制win7系统音量的方法
  5  * 
  6  * @author lcoil
  7  * 
  8  */
  9 public class VolumeControl {
 10 
 11     static {
 12         try{
 13             // add hook for release JNI resource on JVM shutdown 
 14             Runtime.getRuntime().addShutdownHook(new Thread (){
 15                 @Override
 16                 public void run() {        
 17                     try {
 18                         finalize();
 19                     } catch (Throwable e) {
 20                         // TODO Auto-generated catch block
 21                         e.printStackTrace();
 22                     }
 23                     release();                  
 24                 }});
 25 
 26             System.loadLibrary("VolumeControlDLL");
 27         } catch(Exception e){
 28             System.out.println("=-=-=-=-=-="+e.getLocalizedMessage()+"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
 29         }
 30     }
 31 
 32     private static VolumeControl uniqueInstance = null;
 33 
 34     private VolumeControl() throws OperationFailedException {
 35         init();
 36     }
 37 
 38     /**
 39      * 单例模式
 40      * 
 41      * @return 唯一的VolumeControl 有可能为null
 42      */
 43     public static VolumeControl getInstance() {
 44         if (uniqueInstance == null) {
 45             try {
 46                 uniqueInstance = new VolumeControl();
 47             } catch (OperationFailedException e) {
 48                 e.printStackTrace();
 49                 return null;
 50             }
 51         }
 52         return uniqueInstance;
 53     }
 54 
 55     /**
 56      * cpp本地一些初始化
 57      * 
 58      * @return
 59      */
 60     private native void init() throws OperationFailedException;
 61 
 62     /**
 63      * 设置音量大小0~100
 64      * 
 65      * @param num
 66      * @return 操作是否成功
 67      */
 68     public native void setMasterVolume(int num) throws OperationFailedException;
 69 
 70     /**
 71      * 
 72      * @return 当前音量大小1-100
 73      */
 74     public native int getMasterVolume() throws OperationFailedException;
 75 
 76     /**
 77      * 设置是否静音 true-是 false-否
 78      * 
 79      * @param bMute
 80      * @return
 81      */
 82     public native void setMute(boolean bMute) throws OperationFailedException;
 83 
 84     /**
 85      * 得到当前静音状态 true-是 false-否
 86      * 
 87      * @return
 88      */
 89     public native boolean getMute() throws OperationFailedException;
 90 
 91     /**
 92      * cpp本地释放指针等操作
 93      * 
 94      * @return
 95      */
 96     private native void finished();
 97     public native static  void release();
 98 
 99     @Override
100     public void finalize()  {
101         finished();
102         try {
103             super.finalize();
104         } catch (Throwable e) {
105             // TODO Auto-generated catch block
106             e.printStackTrace();
107         }  
108     }
109 
110 }
VolumeControl

 

posted @ 2020-04-21 22:35  l-coil  阅读(1677)  评论(0)  编辑  收藏  举报