diff --git a/vjtop/src/main/java/com/vip/vjtools/vjtop/VMInfo.java b/vjtop/src/main/java/com/vip/vjtools/vjtop/VMInfo.java
index 4585c03a..a02f4b83 100755
--- a/vjtop/src/main/java/com/vip/vjtools/vjtop/VMInfo.java
+++ b/vjtop/src/main/java/com/vip/vjtools/vjtop/VMInfo.java
@@ -362,12 +362,12 @@ private void updateMemoryPool() {
 
 			codeCache = new Usage(memoryPoolManager.getCodeCacheMemoryPool().getUsage());
 
-			direct = new Usage(jmxClient.getBufferPoolManager().getDirectBufferPool().getMemoryUsed(),
-					jmxClient.getBufferPoolManager().getDirectBufferPool().getTotalCapacity(), maxDirectMemorySize);
+			direct = new Usage(jmxClient.getBufferPoolManager().getDirectBufferPoolUsed(),
+					jmxClient.getBufferPoolManager().getDirectBufferPoolCapacity(), maxDirectMemorySize);
 
 			// 取巧用法，将count 放入无用的max中。
-			long mapUsed = jmxClient.getBufferPoolManager().getMappedBufferPool().getMemoryUsed();
-			map = new Usage(mapUsed, jmxClient.getBufferPoolManager().getMappedBufferPool().getTotalCapacity(),
+			long mapUsed = jmxClient.getBufferPoolManager().getMappedBufferPoolUsed();
+			map = new Usage(mapUsed, jmxClient.getBufferPoolManager().getMappedBufferPoolCapacity(),
 					mapUsed == 0 ? 0 : jmxClient.getBufferPoolManager().getMappedBufferPool().getCount());
 
 		} catch (Exception e) {
diff --git a/vjtop/src/main/java/com/vip/vjtools/vjtop/data/jmx/JmxBufferPoolManager.java b/vjtop/src/main/java/com/vip/vjtools/vjtop/data/jmx/JmxBufferPoolManager.java
index e19bf24f..9a792517 100755
--- a/vjtop/src/main/java/com/vip/vjtools/vjtop/data/jmx/JmxBufferPoolManager.java
+++ b/vjtop/src/main/java/com/vip/vjtools/vjtop/data/jmx/JmxBufferPoolManager.java
@@ -18,6 +18,9 @@ public JmxBufferPoolManager(MBeanServerConnection connection) throws IOException
 
 		List<BufferPoolMXBean> bufferPoolMXBeans = ManagementFactory.getPlatformMXBeans(connection,
 				BufferPoolMXBean.class);
+		if (bufferPoolMXBeans == null) {
+			return;
+		}
 
 		for (BufferPoolMXBean bufferPool : bufferPoolMXBeans) {
 			String name = bufferPool.getName().toLowerCase().trim();
@@ -29,11 +32,23 @@ public JmxBufferPoolManager(MBeanServerConnection connection) throws IOException
 		}
 	}
 
-	public BufferPoolMXBean getDirectBufferPool() {
-		return directBufferPool;
+	public long getDirectBufferPoolUsed() {
+		return directBufferPool != null ? directBufferPool.getMemoryUsed() : 0;
+	}
+
+	public long getDirectBufferPoolCapacity() {
+		return directBufferPool != null ? directBufferPool.getTotalCapacity() : 0;
+	}
+
+	public long getMappedBufferPoolUsed() {
+		return mappedBufferPool != null ? mappedBufferPool.getMemoryUsed() : 0;
+	}
+
+	public long getMappedBufferPoolCapacity() {
+		return mappedBufferPool != null ? mappedBufferPool.getTotalCapacity() : 0;
 	}
 
-	public BufferPoolMXBean getMappedBufferPool() {
-		return mappedBufferPool;
+	public long getMappedBufferPoolCount() {
+		return mappedBufferPool != null ? mappedBufferPool.getCount() : 0;
 	}
 }