...

src/main/java/cn/com/qmth/examcloud/commons/util/DBUtil.java

@@ -98,6 +98,21 @@ public class DBUtil {
 				implementation.getMethod("setMaxPoolSize", Integer.class).invoke(c3po, maxPoolSize);
 				implementation.getMethod("setPreferredTestQuery", String.class).invoke(c3po,
 						"select 1 from dual");
+
+				Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
+					public void run() {
+						try {
+							Class<?> dataSourcesClass = Class
+									.forName("com.mchange.v2.c3p0.DataSources");
+							dataSourcesClass.getMethod("destroy", DataSource.class, Boolean.class)
+									.invoke(null, c3po);
+							DataSources.destroy(c3po);
+						} catch (Exception e) {
+							LOG.error("[JDBC] Fail to destroy dataSource. dataSourceName="
+									+ dataSourceName, e);
+						}
+					}
+				}));
 			}
 			// druid
 			else if (simpleName.endsWith("DruidDataSource")) {