DruidStat: support jndi datasource

src/main/java/com/alibaba/druid/util/ReflectionUtils.java

@@ -0,0 +1,45 @@
+package com.alibaba.druid.util;
+
+import java.lang.reflect.Method;
+
+import javax.servlet.http.HttpServletRequest;
+
+/**
+ * @author sandzhang<sandzhangtoo@gmail.com>
+ */
+public class ReflectionUtils {
+
+    public static Class<?> getClassFromWebContainerOrCurrentClassLoader(String className) {
+        Class<?> result = null;
+        try {
+            result = HttpServletRequest.class.getClassLoader().loadClass(className);
+        } catch (ClassNotFoundException e) {
+        }
+        if (result == null) {
+            try {
+                result = Thread.currentThread().getContextClassLoader().loadClass(className);
+            } catch (ClassNotFoundException e) {
+            }
+        }
+        return result;
+    }
+
+    public static Object callStaticMethod(Class<?> classObject, String methodName) {
+
+        try {
+            Method m = classObject.getMethod(methodName);
+            return m.invoke(classObject);
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
+    public static String getTest() {
+        return "test";
+    }
+
+    public static void main(String args[]) {
+        System.out.println(callStaticMethod(ReflectionUtils.class, "getTest"));
+
+    }
+}