通过应用程序读取WebSphere环境变量
因为特殊原因，需要把某些与应用部署环境相关的信息配置在Was Server上，但是在Java应用中能否取到WebSphere的环境变量信息呢？搜索资料后，找到方法，解决代码如下：public class WasVariableUtil {public static String loadVariable(String variableString) throws Throwable {String result = null;AdminService adminService = AdminServiceFactory.getAdminService();ObjectName adminObjectQuery = new ObjectName("WebSphere:*,type=AdminOperations");Set objectNames = adminService.queryNames(adminObjectQuery, null);if (!objectNames.isEmpty()) {ObjectName adminObjectName = (ObjectName) objectNames.iterator().next();String operationName = "expandVariable";String signature[] = { String.class.getName() };String params[] = { variableString };Object retVal = adminService.invoke(adminObjectName, operationName, params, signature);result = String.valueOf(retVal);}return result;}public static void main(String[] args) {String result = null;try {result = WasVariableUtil.loadVariable("${WAS_INSTALL_ROOT}");} catch (Throwable e) {e.printStackTrace();result = "Default Value";}System.out.println(result);}}
以上为代码实现。此外，还依赖Was Client的jar，名称为：com.ibm.ws.webservices.thinclient_6.1.0.jar，在WebSphere的安装目录/opt/IBM/WebSphere/AppServer/runtimes（Linux环境）下可以找到此Jar包
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