diff --git a/src/main/java/io/jboot/web/json/JbootJson.java b/src/main/java/io/jboot/web/json/JbootJson.java
index 5bd8a93a5273479dfc3ba72687d3bc80a1c35f3d..7b5067733b732555723bc2702c79e3a84e53121a 100644
--- a/src/main/java/io/jboot/web/json/JbootJson.java
+++ b/src/main/java/io/jboot/web/json/JbootJson.java
@@ -1,213 +1,213 @@
-/**
- * Copyright (c) 2015-2021, Michael Yang 杨福海 (fuhai999@gmail.com).
- * <p>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package io.jboot.web.json;
-
-import com.alibaba.fastjson.JSON;
-import com.alibaba.fastjson.annotation.JSONField;
-import com.jfinal.json.JFinalJson;
-import com.jfinal.json.JFinalJsonKit;
-import com.jfinal.kit.LogKit;
-import com.jfinal.kit.StrKit;
-import com.jfinal.plugin.activerecord.CPI;
-import com.jfinal.plugin.activerecord.Model;
-import io.jboot.Jboot;
-import io.jboot.utils.ClassUtil;
-import io.jboot.utils.StrUtil;
-
-import java.lang.reflect.Method;
-import java.lang.reflect.Modifier;
-import java.util.*;
-
-
-public class JbootJson extends JFinalJson {
-
-    private JbootJsonConfig config = Jboot.config(JbootJsonConfig.class);
-    protected static Map<Class<?>, MethodsAndFieldsWrapper> methodAndFieldsCache = new HashMap<>();
-
-    public JbootJson() {
-
-        //跳过 null 值输出到浏览器，提高传输性能
-        setSkipNullValueField(config.isSkipNullValueField());
-
-        //设置转换层级
-        setConvertDepth(8);
-
-        //默认设置为 CamelCase 的属性模式
-        if (config.isCamelCaseJsonStyleEnable()) {
-            setModelAndRecordFieldNameConverter((fieldName) -> StrKit.toCamelCase(fieldName, config.isCamelCaseToLowerCaseAnyway()));
-        }
-
-        setToJsonFactory(o -> o instanceof Model ? jbootModelToJson : null);
-
-        if (StrUtil.isNotBlank(config.getTimestampPattern())) {
-            setTimestampPattern(config.getTimestampPattern());
-        }
-    }
-
-
-    protected JFinalJsonKit.ToJson<Model<?>> jbootModelToJson = (model, depth, ret) -> {
-        if (JFinalJsonKit.checkDepth(depth--, ret)) {
-            return;
-        }
-
-        Map<String, Object> map = new HashMap<>();
-
-        if (!config.isSkipModelAttrs()) {
-            fillModelAttrsToMap(CPI.getAttrs(model), map);
-        }
-
-        if (!config.isSkipBeanGetters()) {
-            fillBeanToMap(model, map);
-        }
-
-        optimizeMapAttrs(map);
-
-        JFinalJsonKit.mapToJson(map, depth, ret);
-    };
-
-
-    protected void fillModelAttrsToMap(Map<String, Object> attrs, Map<String, Object> toMap) {
-        if (attrs != null && !attrs.isEmpty()) {
-            for (Map.Entry<String, Object> entry : attrs.entrySet()) {
-                String fieldName = entry.getKey();
-                if (config.isCamelCaseJsonStyleEnable()) {
-                    fieldName = StrKit.toCamelCase(fieldName, config.isCamelCaseToLowerCaseAnyway());
-                }
-                toMap.put(fieldName, entry.getValue());
-            }
-        }
-    }
-
-
-    protected void fillBeanToMap(Object bean, Map<String, Object> toMap) {
-
-        MethodsAndFieldsWrapper wrapper = methodAndFieldsCache.get(bean.getClass());
-        if (wrapper == null) {
-            synchronized (this) {
-                if (wrapper == null) {
-                    wrapper = new MethodsAndFieldsWrapper(bean.getClass());
-                } else {
-                    wrapper = methodAndFieldsCache.get(bean.getClass());
-                }
-            }
-        }
-
-        for (String ignoreField : wrapper.ignoreFields) {
-            toMap.remove(ignoreField);
-        }
-
-
-        for (int i = 0; i < wrapper.fields.size(); i++) {
-            String originalField = wrapper.originalFields.get(i);
-            toMap.remove(originalField);
-
-            Object value = invokeMethod(wrapper.methods.get(i), bean);
-            String field = wrapper.fields.get(i);
-            toMap.put(field, value);
-        }
-
-    }
-
-
-    protected void optimizeMapAttrs(Map<String, Object> map) {
-    }
-
-    protected Object invokeMethod(Method method, Object bean) {
-        try {
-            return method.invoke(bean);
-        } catch (Exception ex) {
-            LogKit.error("can not invoke method: " + ClassUtil.buildMethodString(method), ex);
-            return null;
-        }
-    }
-
-
-    @Override
-    public <T> T parse(String jsonString, Class<T> type) {
-        return JSON.parseObject(jsonString, type);
-    }
-
-
-    public static class MethodsAndFieldsWrapper {
-
-
-        private static boolean hasFastJson = ClassUtil.hasClass("com.alibaba.fastjson.JSON");
-
-        private List<String> fields = new LinkedList<>();
-        private List<Method> methods = new LinkedList<>();
-        private List<String> originalFields = new LinkedList<>();
-
-        //需要忽略的字段
-        private List<String> ignoreFields = new ArrayList<>();
-
-        public MethodsAndFieldsWrapper(Class reflectiveClass) {
-
-            Method[] methodArray = reflectiveClass.getMethods();
-            for (Method method : methodArray) {
-                if (method.getParameterCount() != 0
-                        || method.getReturnType() == void.class
-                        || !Modifier.isPublic(method.getModifiers())
-                        || "getClass".equals(method.getName())) {
-                    continue;
-                }
-
-
-                String fieldName = getGetterMethodField(method.getName());
-                if (fieldName != null) {
-                    String attrName = StrKit.firstCharToLowerCase(fieldName);
-                    if (isIgnoreFiled(method)) {
-                        ignoreFields.add(attrName);
-                    } else {
-                        originalFields.add(attrName);
-                        fields.add(getDefineName(method, attrName));
-                        methods.add(method);
-                    }
-                }
-
-            }
-        }
-
-        private String getGetterMethodField(String methodName) {
-            if (methodName.startsWith("get") && methodName.length() > 3) {
-                return methodName.substring(3);
-            } else if (methodName.startsWith("is") && methodName.length() > 2) {
-                return methodName.substring(2);
-            }
-            return null;
-        }
-
-
-        private String getDefineName(Method method, String orginalName) {
-            if (hasFastJson) {
-                JSONField jsonField = method.getAnnotation(JSONField.class);
-                if (jsonField != null && StrUtil.isNotBlank(jsonField.name())) {
-                    return jsonField.name();
-                }
-            }
-            return orginalName;
-        }
-
-        private boolean isIgnoreFiled(Method method) {
-            if (hasFastJson) {
-                JSONField jsonField = method.getAnnotation(JSONField.class);
-                if (jsonField != null && !jsonField.serialize()) {
-                    return true;
-                }
-            }
-            return method.getAnnotation(JsonIgnore.class) != null;
-        }
-    }
-}
+/**
+ * Copyright (c) 2015-2021, Michael Yang 杨福海 (fuhai999@gmail.com).
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.jboot.web.json;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.annotation.JSONField;
+import com.jfinal.json.JFinalJson;
+import com.jfinal.json.JFinalJsonKit;
+import com.jfinal.kit.LogKit;
+import com.jfinal.kit.StrKit;
+import com.jfinal.plugin.activerecord.CPI;
+import com.jfinal.plugin.activerecord.Model;
+import io.jboot.Jboot;
+import io.jboot.utils.ClassUtil;
+import io.jboot.utils.StrUtil;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.util.*;
+
+
+public class JbootJson extends JFinalJson {
+
+    private JbootJsonConfig config = Jboot.config(JbootJsonConfig.class);
+    protected static Map<Class<?>, MethodsAndFieldsWrapper> methodAndFieldsCache = new HashMap<>();
+
+    public JbootJson() {
+
+        //跳过 null 值输出到浏览器，提高传输性能
+        setSkipNullValueField(config.isSkipNullValueField());
+
+        //设置转换层级
+        setConvertDepth(config.getDepth());
+
+        //默认设置为 CamelCase 的属性模式
+        if (config.isCamelCaseJsonStyleEnable()) {
+            setModelAndRecordFieldNameConverter((fieldName) -> StrKit.toCamelCase(fieldName, config.isCamelCaseToLowerCaseAnyway()));
+        }
+
+        setToJsonFactory(o -> o instanceof Model ? jbootModelToJson : null);
+
+        if (StrUtil.isNotBlank(config.getTimestampPattern())) {
+            setTimestampPattern(config.getTimestampPattern());
+        }
+    }
+
+
+    protected JFinalJsonKit.ToJson<Model<?>> jbootModelToJson = (model, depth, ret) -> {
+        if (JFinalJsonKit.checkDepth(depth--, ret)) {
+            return;
+        }
+
+        Map<String, Object> map = new HashMap<>();
+
+        if (!config.isSkipModelAttrs()) {
+            fillModelAttrsToMap(CPI.getAttrs(model), map);
+        }
+
+        if (!config.isSkipBeanGetters()) {
+            fillBeanToMap(model, map);
+        }
+
+        optimizeMapAttrs(map);
+
+        JFinalJsonKit.mapToJson(map, depth, ret);
+    };
+
+
+    protected void fillModelAttrsToMap(Map<String, Object> attrs, Map<String, Object> toMap) {
+        if (attrs != null && !attrs.isEmpty()) {
+            for (Map.Entry<String, Object> entry : attrs.entrySet()) {
+                String fieldName = entry.getKey();
+                if (config.isCamelCaseJsonStyleEnable()) {
+                    fieldName = StrKit.toCamelCase(fieldName, config.isCamelCaseToLowerCaseAnyway());
+                }
+                toMap.put(fieldName, entry.getValue());
+            }
+        }
+    }
+
+
+    protected void fillBeanToMap(Object bean, Map<String, Object> toMap) {
+
+        MethodsAndFieldsWrapper wrapper = methodAndFieldsCache.get(bean.getClass());
+        if (wrapper == null) {
+            synchronized (this) {
+                if (wrapper == null) {
+                    wrapper = new MethodsAndFieldsWrapper(bean.getClass());
+                } else {
+                    wrapper = methodAndFieldsCache.get(bean.getClass());
+                }
+            }
+        }
+
+        for (String ignoreField : wrapper.ignoreFields) {
+            toMap.remove(ignoreField);
+        }
+
+
+        for (int i = 0; i < wrapper.fields.size(); i++) {
+            String originalField = wrapper.originalFields.get(i);
+            toMap.remove(originalField);
+
+            Object value = invokeMethod(wrapper.methods.get(i), bean);
+            String field = wrapper.fields.get(i);
+            toMap.put(field, value);
+        }
+
+    }
+
+
+    protected void optimizeMapAttrs(Map<String, Object> map) {
+    }
+
+    protected Object invokeMethod(Method method, Object bean) {
+        try {
+            return method.invoke(bean);
+        } catch (Exception ex) {
+            LogKit.error("can not invoke method: " + ClassUtil.buildMethodString(method), ex);
+            return null;
+        }
+    }
+
+
+    @Override
+    public <T> T parse(String jsonString, Class<T> type) {
+        return JSON.parseObject(jsonString, type);
+    }
+
+
+    public static class MethodsAndFieldsWrapper {
+
+
+        private static boolean hasFastJson = ClassUtil.hasClass("com.alibaba.fastjson.JSON");
+
+        private List<String> fields = new LinkedList<>();
+        private List<Method> methods = new LinkedList<>();
+        private List<String> originalFields = new LinkedList<>();
+
+        //需要忽略的字段
+        private List<String> ignoreFields = new ArrayList<>();
+
+        public MethodsAndFieldsWrapper(Class reflectiveClass) {
+
+            Method[] methodArray = reflectiveClass.getMethods();
+            for (Method method : methodArray) {
+                if (method.getParameterCount() != 0
+                        || method.getReturnType() == void.class
+                        || !Modifier.isPublic(method.getModifiers())
+                        || "getClass".equals(method.getName())) {
+                    continue;
+                }
+
+
+                String fieldName = getGetterMethodField(method.getName());
+                if (fieldName != null) {
+                    String attrName = StrKit.firstCharToLowerCase(fieldName);
+                    if (isIgnoreFiled(method)) {
+                        ignoreFields.add(attrName);
+                    } else {
+                        originalFields.add(attrName);
+                        fields.add(getDefineName(method, attrName));
+                        methods.add(method);
+                    }
+                }
+
+            }
+        }
+
+        private String getGetterMethodField(String methodName) {
+            if (methodName.startsWith("get") && methodName.length() > 3) {
+                return methodName.substring(3);
+            } else if (methodName.startsWith("is") && methodName.length() > 2) {
+                return methodName.substring(2);
+            }
+            return null;
+        }
+
+
+        private String getDefineName(Method method, String orginalName) {
+            if (hasFastJson) {
+                JSONField jsonField = method.getAnnotation(JSONField.class);
+                if (jsonField != null && StrUtil.isNotBlank(jsonField.name())) {
+                    return jsonField.name();
+                }
+            }
+            return orginalName;
+        }
+
+        private boolean isIgnoreFiled(Method method) {
+            if (hasFastJson) {
+                JSONField jsonField = method.getAnnotation(JSONField.class);
+                if (jsonField != null && !jsonField.serialize()) {
+                    return true;
+                }
+            }
+            return method.getAnnotation(JsonIgnore.class) != null;
+        }
+    }
+}
diff --git a/src/main/java/io/jboot/web/json/JbootJsonConfig.java b/src/main/java/io/jboot/web/json/JbootJsonConfig.java
index 521f5d799ebbe2bd478e2893466caa2911512892..9c137e18f7a1f6377a127f61c2a325f8a6868199 100644
--- a/src/main/java/io/jboot/web/json/JbootJsonConfig.java
+++ b/src/main/java/io/jboot/web/json/JbootJsonConfig.java
@@ -1,81 +1,90 @@
-/**
- * Copyright (c) 2015-2021, Michael Yang 杨福海 (fuhai999@gmail.com).
- * <p>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package io.jboot.web.json;
-
-import io.jboot.app.config.annotation.ConfigModel;
-
-/**
- * @author Michael Yang 杨福海 （fuhai999@gmail.com）
- * @version V1.0
- */
-@ConfigModel(prefix = "jboot.json")
-public class JbootJsonConfig {
-
-    private boolean camelCaseJsonStyleEnable = true;
-    private boolean camelCaseToLowerCaseAnyway = false;
-    private boolean skipNullValueField = true;
-    private boolean skipModelAttrs = false;
-    private boolean skipBeanGetters = false;
-    private String timestampPattern;
-
-    public boolean isCamelCaseJsonStyleEnable() {
-        return camelCaseJsonStyleEnable;
-    }
-
-    public void setCamelCaseJsonStyleEnable(boolean camelCaseJsonStyleEnable) {
-        this.camelCaseJsonStyleEnable = camelCaseJsonStyleEnable;
-    }
-
-    public boolean isCamelCaseToLowerCaseAnyway() {
-        return camelCaseToLowerCaseAnyway;
-    }
-
-    public void setCamelCaseToLowerCaseAnyway(boolean camelCaseToLowerCaseAnyway) {
-        this.camelCaseToLowerCaseAnyway = camelCaseToLowerCaseAnyway;
-    }
-
-    public boolean isSkipNullValueField() {
-        return skipNullValueField;
-    }
-
-    public void setSkipNullValueField(boolean skipNullValueField) {
-        this.skipNullValueField = skipNullValueField;
-    }
-
-    public boolean isSkipModelAttrs() {
-        return skipModelAttrs;
-    }
-
-    public void setSkipModelAttrs(boolean skipModelAttrs) {
-        this.skipModelAttrs = skipModelAttrs;
-    }
-
-    public boolean isSkipBeanGetters() {
-        return skipBeanGetters;
-    }
-
-    public void setSkipBeanGetters(boolean skipBeanGetters) {
-        this.skipBeanGetters = skipBeanGetters;
-    }
-
-    public String getTimestampPattern() {
-        return timestampPattern;
-    }
-
-    public void setTimestampPattern(String timestampPattern) {
-        this.timestampPattern = timestampPattern;
-    }
-}
+/**
+ * Copyright (c) 2015-2021, Michael Yang 杨福海 (fuhai999@gmail.com).
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.jboot.web.json;
+
+import io.jboot.app.config.annotation.ConfigModel;
+
+/**
+ * @author Michael Yang 杨福海 （fuhai999@gmail.com）
+ * @version V1.0
+ */
+@ConfigModel(prefix = "jboot.json")
+public class JbootJsonConfig {
+
+    private boolean camelCaseJsonStyleEnable = true;
+    private boolean camelCaseToLowerCaseAnyway = false;
+    private boolean skipNullValueField = true;
+    private boolean skipModelAttrs = false;
+    private boolean skipBeanGetters = false;
+    private String timestampPattern;
+    private int depth = 16;
+
+	public boolean isCamelCaseJsonStyleEnable() {
+        return camelCaseJsonStyleEnable;
+    }
+
+    public void setCamelCaseJsonStyleEnable(boolean camelCaseJsonStyleEnable) {
+        this.camelCaseJsonStyleEnable = camelCaseJsonStyleEnable;
+    }
+
+    public boolean isCamelCaseToLowerCaseAnyway() {
+        return camelCaseToLowerCaseAnyway;
+    }
+
+    public void setCamelCaseToLowerCaseAnyway(boolean camelCaseToLowerCaseAnyway) {
+        this.camelCaseToLowerCaseAnyway = camelCaseToLowerCaseAnyway;
+    }
+
+    public boolean isSkipNullValueField() {
+        return skipNullValueField;
+    }
+
+    public void setSkipNullValueField(boolean skipNullValueField) {
+        this.skipNullValueField = skipNullValueField;
+    }
+
+    public boolean isSkipModelAttrs() {
+        return skipModelAttrs;
+    }
+
+    public void setSkipModelAttrs(boolean skipModelAttrs) {
+        this.skipModelAttrs = skipModelAttrs;
+    }
+
+    public boolean isSkipBeanGetters() {
+        return skipBeanGetters;
+    }
+
+    public void setSkipBeanGetters(boolean skipBeanGetters) {
+        this.skipBeanGetters = skipBeanGetters;
+    }
+
+    public String getTimestampPattern() {
+        return timestampPattern;
+    }
+
+    public void setTimestampPattern(String timestampPattern) {
+        this.timestampPattern = timestampPattern;
+    }
+
+    public int getDepth() {
+		return depth;
+	}
+
+	public void setDepth(int depth) {
+		this.depth = depth;
+	}
+}