diff --git a/pom.xml b/pom.xml
index 0fb61ca..389df3e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>cn.cloudowr</groupId>
     <artifactId>sdk</artifactId>
-    <version>1.1.1</version>
+    <version>1.1.2</version>
     <build>
         <plugins>
             <plugin>
@@ -42,7 +42,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
-            <version>1.2.6</version>
+            <version>1.2.24</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
diff --git a/src/main/java/cn/cloudowr/sdk/FastJSONUtil.java b/src/main/java/cn/cloudowr/sdk/FastJSONUtil.java
index 667898f..ef98470 100644
--- a/src/main/java/cn/cloudowr/sdk/FastJSONUtil.java
+++ b/src/main/java/cn/cloudowr/sdk/FastJSONUtil.java
@@ -1,17 +1,41 @@
 package cn.cloudowr.sdk;
 
 import com.alibaba.fastjson.JSON;
-import com.alibaba.fastjson.serializer.SerializeConfig;
+import com.alibaba.fastjson.serializer.*;
+import org.bson.types.ObjectId;
+
+import java.io.IOException;
+import java.lang.reflect.Type;
 
 /**
  * Created by lyf66 on 2017/2/18.
  */
 public class FastJSONUtil {
-    private static ObjectIdSerializer serializer = new ObjectIdSerializer();
+    private static ObjectSerializer serializer = new ObjectSerializer() {
+        @Override
+        public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
+            if (object == null) {
+                serializer.getWriter().writeNull();
+            } else {
+                serializer.write(((ObjectId) object).toString());
+            }
+        }
+    };
+    private static NameFilter nameFilter = new NameFilter() {
+
+        @Override
+        public String process(Object object, String name, Object value) {
+            if ("_id".equals(name)) {
+                return "id";
+            }
+            return name;
+        }
+    };
 
     public static String bsonToJSON(Object object) {
         SerializeConfig mapping = new SerializeConfig();
         mapping.put(org.bson.types.ObjectId.class, serializer);
-        return JSON.toJSONString(object, mapping);
+
+        return JSON.toJSONString(object, mapping, nameFilter);
     }
 }
diff --git a/src/main/java/cn/cloudowr/sdk/ObjectIdSerializer.java b/src/main/java/cn/cloudowr/sdk/ObjectIdSerializer.java
deleted file mode 100644
index df3f2c9..0000000
--- a/src/main/java/cn/cloudowr/sdk/ObjectIdSerializer.java
+++ /dev/null
@@ -1,22 +0,0 @@
-package cn.cloudowr.sdk;
-
-import com.alibaba.fastjson.serializer.JSONSerializer;
-import com.alibaba.fastjson.serializer.ObjectSerializer;
-import org.bson.types.ObjectId;
-
-import java.io.IOException;
-import java.lang.reflect.Type;
-
-/**
- * Created by lisai on 17/2/9.
- */
-public class ObjectIdSerializer implements ObjectSerializer {
-    @Override
-    public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
-        if(object == null) {
-            serializer.getWriter().writeNull();
-        } else {
-            serializer.write(((ObjectId)object).toString());
-        }
-    }
-}
diff --git a/src/main/java/cn/cloudowr/sdk/mongo/DBModel.java b/src/main/java/cn/cloudowr/sdk/mongo/DBModel.java
new file mode 100644
index 0000000..9069d2f
--- /dev/null
+++ b/src/main/java/cn/cloudowr/sdk/mongo/DBModel.java
@@ -0,0 +1,7 @@
+package cn.cloudowr.sdk.mongo;
+
+/**
+ * Created by lyf66 on 2017/2/19.
+ */
+public abstract class DBModel {
+}
diff --git a/src/main/java/cn/cloudowr/sdk/mongo/MongoQueryModel.java b/src/main/java/cn/cloudowr/sdk/mongo/MongoQueryModel.java
new file mode 100644
index 0000000..bc0334a
--- /dev/null
+++ b/src/main/java/cn/cloudowr/sdk/mongo/MongoQueryModel.java
@@ -0,0 +1,7 @@
+package cn.cloudowr.sdk.mongo;
+
+/**
+ * Created by lyf66 on 2017/2/19.
+ */
+public class MongoQueryModel extends QueryModel{
+}
diff --git a/src/main/java/cn/cloudowr/sdk/mongo/MongoQueryModelBuilder.java b/src/main/java/cn/cloudowr/sdk/mongo/MongoQueryModelBuilder.java
new file mode 100644
index 0000000..2133576
--- /dev/null
+++ b/src/main/java/cn/cloudowr/sdk/mongo/MongoQueryModelBuilder.java
@@ -0,0 +1,103 @@
+package cn.cloudowr.sdk.mongo;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.TypeReference;
+import com.mongodb.client.model.Filters;
+import com.mongodb.client.model.Updates;
+import org.bson.Document;
+import org.bson.conversions.Bson;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Created by lyf66 on 2017/2/19.
+ */
+public class MongoQueryModelBuilder {
+    private static Map<String, List<String>> cachedRequiedFieldNames = new HashMap<>();
+    private String key;
+
+    public MongoQueryModel build(String json, Class<? extends DBModel> klass) {
+
+        return null;
+    }
+
+    public MongoQueryModel build(String json, List<String> requiedFieldNames) {
+        return null;
+    }
+
+    public Document build(String json, boolean throwOnException) {
+        Bson filter;
+        Bson update;
+        Bson proj;
+
+        HashMap<String, Object> map = JSON.parseObject(json, new TypeReference<HashMap<String, Object>>() {});
+        List<String> f = (List<String>) map.get("f");
+        List<String> upd = (List<String>) map.get("upd");
+
+
+        filter = getFilter(f);
+        update = getUpdate(upd);
+        return null;
+    }
+
+    private Bson getUpdate(List<String> upd) {
+        List<Bson> ops = new ArrayList<>();
+        Bson update = null;
+        for (String s : upd) {
+            List<String> list = JSON.parseObject(s, new TypeReference<List<String>>() {});
+            String opString = list.get(0);
+            bbb(ops, list, opString);
+        }
+        return null;
+    }
+
+    private Bson getFilter(List<String> f) {
+        List<Bson> ops = new ArrayList<>();
+        Bson filter = null;
+
+        for (String s : f) {
+            List<String> list = JSON.parseObject(s, new TypeReference<List<String>>() {});
+            String opString = list.get(1);
+            bbb(ops, list, opString);
+
+            filter = Filters.and(ops);
+        }
+        return filter;
+    }
+
+    private void bbb(List<Bson> ops, List<String> list, String opString) {
+        String key = list.get(1);
+//        Object val =
+        switch (opString) {
+            case "=":
+                ops.add(Filters.eq(list.get(1), list.get(2)));
+                break;
+            case ">":
+                ops.add(Filters.gt(list.get(1), list.get(2)));
+                break;
+            case "<":
+                ops.add(Filters.lt(list.get(1), list.get(2)));
+                break;
+            case ">=":
+                ops.add(Filters.gte(list.get(1), list.get(2)));
+                break;
+            case "<=":
+
+                ops.add(Filters.lte(key, list.get(2)));
+                break;
+            case "$set":
+                ops.add(Updates.set(list.get(1), list.get(2)));
+        }
+    }
+
+    private Document typeCheck(boolean throwOnException, String msg) {
+        if (throwOnException) {
+            throw new ClassCastException(msg);
+        } else {
+            return null;
+        }
+    }
+}
diff --git a/src/main/java/cn/cloudowr/sdk/mongo/QueryBuilder.java b/src/main/java/cn/cloudowr/sdk/mongo/QueryBuilder.java
new file mode 100644
index 0000000..1a88ca0
--- /dev/null
+++ b/src/main/java/cn/cloudowr/sdk/mongo/QueryBuilder.java
@@ -0,0 +1,13 @@
+package cn.cloudowr.sdk.mongo;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Created by lyf66 on 2017/2/19.
+ */
+public interface QueryBuilder<T extends QueryModel> {
+    T build(String json, Class<? extends DBModel> klass);
+    T build(String json, List<String> requiedFieldNames);
+    T build(String json);
+}
diff --git a/src/main/java/cn/cloudowr/sdk/mongo/QueryModel.java b/src/main/java/cn/cloudowr/sdk/mongo/QueryModel.java
new file mode 100644
index 0000000..9889821
--- /dev/null
+++ b/src/main/java/cn/cloudowr/sdk/mongo/QueryModel.java
@@ -0,0 +1,7 @@
+package cn.cloudowr.sdk.mongo;
+
+/**
+ * Created by lyf66 on 2017/2/19.
+ */
+public abstract class QueryModel {
+}