diff --git a/src/org/redkale/boot/LogFileHandler.java b/src/org/redkale/boot/LogFileHandler.java
index 92848e796..194cc0f32 100644
--- a/src/org/redkale/boot/LogFileHandler.java
+++ b/src/org/redkale/boot/LogFileHandler.java
@@ -22,6 +22,7 @@ import java.util.logging.Formatter;
  *
  * @author zhangjx
  */
+@SuppressWarnings("unchecked")
 public class LogFileHandler extends Handler {
 
     /**
diff --git a/src/org/redkale/boot/NodeHttpServer.java b/src/org/redkale/boot/NodeHttpServer.java
index e7055f85d..9777d2378 100644
--- a/src/org/redkale/boot/NodeHttpServer.java
+++ b/src/org/redkale/boot/NodeHttpServer.java
@@ -122,6 +122,7 @@ public class NodeHttpServer extends NodeServer {
         }, WebSocketNode.class);
     }
 
+    @SuppressWarnings("unchecked")
     protected void loadHttpFilter(final AnyValue filtersConf, final ClassFilter<? extends Filter> classFilter) throws Exception {
         final StringBuilder sb = logger.isLoggable(Level.INFO) ? new StringBuilder() : null;
         final String threadName = "[" + Thread.currentThread().getName() + "] ";
@@ -138,6 +139,7 @@ public class NodeHttpServer extends NodeServer {
         if (sb != null && sb.length() > 0) logger.log(Level.INFO, sb.toString());
     }
 
+    @SuppressWarnings("unchecked")
     protected void loadHttpServlet(final ClassFilter<? extends Servlet> servletFilter, ClassFilter<? extends WebSocket> webSocketFilter) throws Exception {
         final AnyValue servletsConf = this.serverConf.getAnyValue("servlets");
         final StringBuilder sb = logger.isLoggable(Level.INFO) ? new StringBuilder() : null;
@@ -195,6 +197,7 @@ public class NodeHttpServer extends NodeServer {
         if (sb != null && sb.length() > 0) logger.log(Level.INFO, sb.toString().trim());
     }
 
+    @SuppressWarnings("unchecked")
     protected void loadRestServlet(final ClassFilter<? extends WebSocket> webSocketFilter, final AnyValue restConf, final List<Object> restedObjects, final StringBuilder sb) throws Exception {
         if (!rest) return;
         if (restConf == null) return; //不存在REST服务
diff --git a/src/org/redkale/boot/NodeSncpServer.java b/src/org/redkale/boot/NodeSncpServer.java
index c3a7f4175..ea7bfc358 100644
--- a/src/org/redkale/boot/NodeSncpServer.java
+++ b/src/org/redkale/boot/NodeSncpServer.java
@@ -85,6 +85,7 @@ public class NodeSncpServer extends NodeServer {
         if (sncpServer != null) loadSncpFilter(this.serverConf.getAnyValue("fliters"), filterFilter);
     }
 
+    @SuppressWarnings("unchecked")
     protected void loadSncpFilter(final AnyValue servletsConf, final ClassFilter<? extends Filter> classFilter) throws Exception {
         final StringBuilder sb = logger.isLoggable(Level.INFO) ? new StringBuilder() : null;
         final String threadName = "[" + Thread.currentThread().getName() + "] ";
@@ -106,6 +107,7 @@ public class NodeSncpServer extends NodeServer {
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     protected ClassFilter<Filter> createFilterClassFilter() {
         return createClassFilter(null, null, SncpFilter.class, new Class[]{org.redkale.watch.WatchFilter.class}, null, "filters", "filter");
     }
diff --git a/src/org/redkale/convert/bson/BsonConvert.java b/src/org/redkale/convert/bson/BsonConvert.java
index de1df685f..3b3c0f4c2 100644
--- a/src/org/redkale/convert/bson/BsonConvert.java
+++ b/src/org/redkale/convert/bson/BsonConvert.java
@@ -104,6 +104,7 @@ public final class BsonConvert extends Convert<BsonReader, BsonWriter> {
         return convertFrom(type, bytes, 0, bytes.length);
     }
 
+    @SuppressWarnings("unchecked")
     public <T> T convertFrom(final Type type, final byte[] bytes, final int start, final int len) {
         if (type == null) return null;
         final BsonReader in = readerPool.get();
@@ -114,23 +115,27 @@ public final class BsonConvert extends Convert<BsonReader, BsonWriter> {
         return rs;
     }
 
+    @SuppressWarnings("unchecked")
     public <T> T convertFrom(final Type type, final InputStream in) {
         if (type == null || in == null) return null;
         return (T) factory.loadDecoder(type).convertFrom(new BsonStreamReader(in));
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public <T> T convertFrom(final Type type, final ByteBuffer... buffers) {
         if (type == null || buffers.length < 1) return null;
         return (T) factory.loadDecoder(type).convertFrom(new BsonByteBufferReader((ConvertMask) null, buffers));
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public <T> T convertFrom(final Type type, final ConvertMask mask, final ByteBuffer... buffers) {
         if (type == null || buffers.length < 1) return null;
         return (T) factory.loadDecoder(type).convertFrom(new BsonByteBufferReader(mask, buffers));
     }
 
+    @SuppressWarnings("unchecked")
     public <T> T convertFrom(final Type type, final BsonReader reader) {
         if (type == null) return null;
         @SuppressWarnings("unchecked")
diff --git a/src/org/redkale/convert/bson/BsonReader.java b/src/org/redkale/convert/bson/BsonReader.java
index 9063a00fd..930e8cdbd 100644
--- a/src/org/redkale/convert/bson/BsonReader.java
+++ b/src/org/redkale/convert/bson/BsonReader.java
@@ -87,6 +87,7 @@ public class BsonReader extends Reader {
      * 跳过属性的值
      */
     @Override
+    @SuppressWarnings("unchecked")
     public final void skipValue() {
         if (typeval == 0) return;
         final byte val = this.typeval;
diff --git a/src/org/redkale/convert/ext/InetAddressSimpledCoder.java b/src/org/redkale/convert/ext/InetAddressSimpledCoder.java
index 9471d7943..fc9cc2e3e 100644
--- a/src/org/redkale/convert/ext/InetAddressSimpledCoder.java
+++ b/src/org/redkale/convert/ext/InetAddressSimpledCoder.java
@@ -20,6 +20,7 @@ import java.net.*;
  * @param <R> Reader输入的子类型
  * @param <W> Writer输出的子类型
  */
+@SuppressWarnings("unchecked")
 public final class InetAddressSimpledCoder<R extends Reader, W extends Writer> extends SimpledCoder<R, W, InetAddress> {
 
     public static final InetAddressSimpledCoder instance = new InetAddressSimpledCoder();
@@ -50,6 +51,7 @@ public final class InetAddressSimpledCoder<R extends Reader, W extends Writer> e
      * @param <R> Reader输入的子类型
      * @param <W> Writer输出的子类型
      */
+    @SuppressWarnings("unchecked")
     public final static class InetSocketAddressSimpledCoder<R extends Reader, W extends Writer> extends SimpledCoder<R, W, InetSocketAddress> {
 
         public static final InetSocketAddressSimpledCoder instance = new InetSocketAddressSimpledCoder();
diff --git a/src/org/redkale/convert/json/JsonFactory.java b/src/org/redkale/convert/json/JsonFactory.java
index a62ad9dae..e7d067698 100644
--- a/src/org/redkale/convert/json/JsonFactory.java
+++ b/src/org/redkale/convert/json/JsonFactory.java
@@ -20,6 +20,7 @@ import org.redkale.util.*;
  *
  * @author zhangjx
  */
+@SuppressWarnings("unchecked")
 public final class JsonFactory extends ConvertFactory<JsonReader, JsonWriter> {
 
     private static final JsonFactory instance = new JsonFactory(null, Boolean.getBoolean("convert.json.tiny"));
diff --git a/src/org/redkale/net/PrepareServlet.java b/src/org/redkale/net/PrepareServlet.java
index 9d78e7139..e3e7a244e 100644
--- a/src/org/redkale/net/PrepareServlet.java
+++ b/src/org/redkale/net/PrepareServlet.java
@@ -118,6 +118,7 @@ public abstract class PrepareServlet<K extends Serializable, C extends Context,
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public void init(C context, AnyValue config) {
         synchronized (filters) {
             if (!filters.isEmpty()) {
@@ -136,6 +137,7 @@ public abstract class PrepareServlet<K extends Serializable, C extends Context,
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public void destroy(C context, AnyValue config) {
         synchronized (filters) {
             if (!filters.isEmpty()) {
@@ -146,6 +148,7 @@ public abstract class PrepareServlet<K extends Serializable, C extends Context,
         }
     }
 
+    @SuppressWarnings("unchecked")
     public void addFilter(Filter<C, R, P> filter, AnyValue conf) {
         filter._conf = conf;
         synchronized (filters) {
@@ -176,6 +179,7 @@ public abstract class PrepareServlet<K extends Serializable, C extends Context,
         return false;
     }
 
+    @SuppressWarnings("unchecked")
     public <T extends Filter<C, R, P>> T removeFilter(Predicate<T> predicate) {
         if (this.headFilter == null || predicate == null) return null;
         synchronized (filters) {
@@ -198,10 +202,12 @@ public abstract class PrepareServlet<K extends Serializable, C extends Context,
         }
     }
 
+    @SuppressWarnings("unchecked")
     public <T extends Filter<C, R, P>> List<T> getFilters() {
         return (List) new ArrayList<>(filters);
     }
 
+    @SuppressWarnings("unchecked")
     public abstract void addServlet(S servlet, Object attachment, AnyValue conf, K... mappings);
 
     public final void prepare(final ByteBuffer buffer, final R request, final P response) throws IOException {
diff --git a/src/org/redkale/net/Request.java b/src/org/redkale/net/Request.java
index 4ef3133ee..862a71db5 100644
--- a/src/org/redkale/net/Request.java
+++ b/src/org/redkale/net/Request.java
@@ -51,6 +51,7 @@ public abstract class Request<C extends Context> {
      * 返回值：Integer.MIN_VALUE: 帧数据； -1：数据不合法； 0：解析完毕； &gt;0: 需再读取的字节数。
      *
      * @param buffer ByteBuffer对象
+     *
      * @return 缺少的字节数
      */
     protected abstract int readHeader(ByteBuffer buffer);
@@ -59,6 +60,7 @@ public abstract class Request<C extends Context> {
      * 读取buffer，并返回读取的有效数据长度
      *
      * @param buffer ByteBuffer对象
+     *
      * @return 有效数据长度
      */
     protected abstract int readBody(ByteBuffer buffer);
@@ -82,8 +84,9 @@ public abstract class Request<C extends Context> {
         return (T) properties.get(name);
     }
 
+    @SuppressWarnings("unchecked")
     protected <T> T removeProperty(String name) {
-        return (T)properties.remove(name);
+        return (T) properties.remove(name);
     }
 
     protected Map<String, Object> getProperties() {
@@ -100,8 +103,9 @@ public abstract class Request<C extends Context> {
         return (T) attributes.get(name);
     }
 
+    @SuppressWarnings("unchecked")
     public <T> T removeAttribute(String name) {
-        return (T)attributes.remove(name);
+        return (T) attributes.remove(name);
     }
 
     public Map<String, Object> getAttributes() {
diff --git a/src/org/redkale/net/http/HttpContext.java b/src/org/redkale/net/http/HttpContext.java
index ee19c8ae5..a649f0f1b 100644
--- a/src/org/redkale/net/http/HttpContext.java
+++ b/src/org/redkale/net/http/HttpContext.java
@@ -53,6 +53,7 @@ public class HttpContext extends Context {
         return responsePool;
     }
 
+    @SuppressWarnings("unchecked")
     protected <H extends AsyncHandler> Creator<H> loadAsyncHandlerCreator(Class<H> handlerClass) {
         Creator<H> creator = asyncHandlerCreators.get(handlerClass);
         if (creator == null) {
@@ -62,6 +63,7 @@ public class HttpContext extends Context {
         return creator;
     }
 
+    @SuppressWarnings("unchecked")
     private <H extends AsyncHandler> Creator<H> createAsyncHandlerCreator(Class<H> handlerClass) {
         //生成规则与SncpAsyncHandler.Factory 很类似
         //------------------------------------------------------------- 
diff --git a/src/org/redkale/net/http/HttpResponse.java b/src/org/redkale/net/http/HttpResponse.java
index 2a96e9e76..057d60a61 100644
--- a/src/org/redkale/net/http/HttpResponse.java
+++ b/src/org/redkale/net/http/HttpResponse.java
@@ -186,6 +186,7 @@ public class HttpResponse extends Response<HttpContext, HttpRequest> {
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     protected void thenEvent(Servlet servlet) {
         this.servlet = servlet;
     }
@@ -248,6 +249,7 @@ public class HttpResponse extends Response<HttpContext, HttpRequest> {
      *
      * @return AsyncHandler AsyncHandler
      */
+    @SuppressWarnings("unchecked")
     public <H extends AsyncHandler> H createAsyncHandler(Class<H> handlerClass) {
         if (handlerClass == null || handlerClass == AsyncHandler.class) return (H) createAsyncHandler();
         return context.loadAsyncHandlerCreator(handlerClass).create(createAsyncHandler());
@@ -358,6 +360,7 @@ public class HttpResponse extends Response<HttpContext, HttpRequest> {
      * @param convert 指定的JsonConvert
      * @param future  输出对象的句柄
      */
+    @SuppressWarnings("unchecked")
     public void finishJson(final JsonConvert convert, final CompletableFuture future) {
         future.whenComplete((v, e) -> {
             if (e != null) {
@@ -382,6 +385,7 @@ public class HttpResponse extends Response<HttpContext, HttpRequest> {
      * @param type    指定的类型
      * @param future  输出对象的句柄
      */
+    @SuppressWarnings("unchecked")
     public void finishJson(final JsonConvert convert, final Type type, final CompletableFuture future) {
         future.whenComplete((v, e) -> {
             if (e != null) {
@@ -416,6 +420,7 @@ public class HttpResponse extends Response<HttpContext, HttpRequest> {
      * @param convert 指定的JsonConvert
      * @param result  HttpResult对象
      */
+    @SuppressWarnings("unchecked")
     public void finishJson(final JsonConvert convert, final HttpResult result) {
         if (output == null) {
             finish("");
diff --git a/src/org/redkale/net/http/HttpServer.java b/src/org/redkale/net/http/HttpServer.java
index ff23ca617..8d6f71a18 100644
--- a/src/org/redkale/net/http/HttpServer.java
+++ b/src/org/redkale/net/http/HttpServer.java
@@ -217,6 +217,7 @@ public class HttpServer extends Server<String, HttpContext, HttpRequest, HttpRes
      *
      * @return RestServlet
      */
+    @SuppressWarnings("unchecked")
     public <S extends Service, T extends HttpServlet> T addRestServlet(final ClassLoader classLoader, final String name, final S service, final Class userType, final Class<T> baseServletType, final String prefix) {
         T servlet = null;
         final boolean sncp = Sncp.isSncpDyn(service);
diff --git a/src/org/redkale/net/http/HttpServlet.java b/src/org/redkale/net/http/HttpServlet.java
index 9f88c0ccd..10f76ef95 100644
--- a/src/org/redkale/net/http/HttpServlet.java
+++ b/src/org/redkale/net/http/HttpServlet.java
@@ -81,6 +81,7 @@ public class HttpServlet extends Servlet<HttpContext, HttpRequest, HttpResponse>
         }
     };
 
+    @SuppressWarnings("unchecked")
     void preInit(HttpContext context, AnyValue config) {
         String path = _prefix == null ? "" : _prefix;
         WebServlet ws = this.getClass().getAnnotation(WebServlet.class);
diff --git a/src/org/redkale/net/http/WebSocketPacket.java b/src/org/redkale/net/http/WebSocketPacket.java
index 8ec53e9ee..ed0e01c98 100644
--- a/src/org/redkale/net/http/WebSocketPacket.java
+++ b/src/org/redkale/net/http/WebSocketPacket.java
@@ -112,7 +112,7 @@ public final class WebSocketPacket {
     ByteBuffer[] duplicateSendBuffers() {
         ByteBuffer[] rs = new ByteBuffer[this.sendBuffers.length];
         for (int i = 0; i < this.sendBuffers.length; i++) {
-            rs[i] = this.sendBuffers[i].duplicate().asReadOnlyBuffer();
+            rs[i] = this.sendBuffers[i].duplicate().asReadOnlyBuffer(); //必须使用asReadOnlyBuffer， 否则会导致ByteBuffer对应的byte[]被ObjectPool回收两次
         }
         return rs;
     }
diff --git a/src/org/redkale/util/Attribute.java b/src/org/redkale/util/Attribute.java
index f0cc4e40a..fe67f07f9 100644
--- a/src/org/redkale/util/Attribute.java
+++ b/src/org/redkale/util/Attribute.java
@@ -74,6 +74,7 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
  * @param <T> 字段依附的类
  * @param <F> 字段的数据类型
  */
+@SuppressWarnings("unchecked")
 public interface Attribute<T, F> {
 
     /**
diff --git a/src/org/redkale/util/Creator.java b/src/org/redkale/util/Creator.java
index dd6e43799..bf87e4894 100644
--- a/src/org/redkale/util/Creator.java
+++ b/src/org/redkale/util/Creator.java
@@ -82,6 +82,7 @@ public interface Creator<T> {
 
         String[] value();
 
+        @SuppressWarnings("unchecked")
         static class CreatorInner {
 
             static class SimpleClassVisitor extends ClassVisitor {