使用swt判断word是否安装

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swt其实包装了很多操作系统上比较底层的操作，通过查看swt的源代码就可以知道使用方法

根据名字获得guid，没有获得则返回空

private static GUID getClassID(String clientName) {GUID guid = new GUID();char[] buffer = null;if (clientName != null) {int count = clientName.length();buffer = new char[count + 1];clientName.getChars(0, count, buffer, 0);}if (COM.CLSIDFromProgID(buffer, guid) != COM.S_OK){int result = COM.CLSIDFromString(buffer, guid);if (result != COM.S_OK) return null;}return guid;}

一般程序的调用逻辑

private static void setWpsWordAvailable() {GUID guid = getClassID(WPS_WORD_APP_NAME);isWpsWordAvailable = guid != null;}private static void setMsoWordAvailable() {GUID guid = getClassID(MSO_WORD_APP_NAME);isMsoWordAvailable = guid != null;}public static String getWordAppName() {if (isMsoWordAvailable) return MSO_WORD_APP_NAME;if (isWpsWordAvailable) return WPS_WORD_APP_NAME;return null;}