diff --git a/src/META-INF/application-template.xml b/src/META-INF/application-template.xml
index 39148c0a3..4bb3c4134 100644
--- a/src/META-INF/application-template.xml
+++ b/src/META-INF/application-template.xml
@@ -47,6 +47,7 @@
         <!-- 
             全局的参数配置, 可以通过@Resource(name="property.xxxxxx") 进行注入, 被注解的字段类型只能是String、primitive class
             如果name是system.property.开头的值将会在进程启动时进行System.setProperty("yyyy", "YYYYYY")操作。
+            如果name是mimetype.property.开头的值将会在进程启动时进行MimeType.add("yyyy", "YYYYYY")操作。
             load:  加载文件，多个用;隔开。
             默认置入的system.property.的有：
                System.setProperty("convert.bson.pool.size", "128");
diff --git a/src/org/redkale/boot/Application.java b/src/org/redkale/boot/Application.java
index 01523cd17..7b1392a5c 100644
--- a/src/org/redkale/boot/Application.java
+++ b/src/org/redkale/boot/Application.java
@@ -21,6 +21,7 @@ import javax.xml.parsers.*;
 import org.redkale.convert.bson.*;
 import org.redkale.convert.json.*;
 import org.redkale.net.*;
+import org.redkale.net.http.*;
 import org.redkale.net.sncp.*;
 import org.redkale.service.*;
 import org.redkale.source.*;
@@ -248,6 +249,8 @@ public final class Application {
                     if (name == null || value == null) continue;
                     if (name.startsWith("system.property.")) {
                         System.setProperty(name.substring("system.property.".length()), value);
+                    } else if (name.startsWith("mimetype.property.")) {
+                        MimeType.add(name.substring("mimetype.property.".length()), value);
                     } else {
                         factory.register("property." + name, value);
                     }
diff --git a/src/org/redkale/net/http/AuthIgnore.java b/src/org/redkale/net/http/AuthIgnore.java
index d12031f05..526cb1c08 100644
--- a/src/org/redkale/net/http/AuthIgnore.java
+++ b/src/org/redkale/net/http/AuthIgnore.java
@@ -11,6 +11,7 @@ import static java.lang.annotation.RetentionPolicy.RUNTIME;
 
 /**
  * 配合 BasedHttpServlet 使用， 当标记为 @AuthIgnore 的方法不会再调用之前调用authenticate 方法。
+ * 
  * @author zhangjx
  */
 @Inherited
diff --git a/src/org/redkale/net/http/HttpCacheable.java b/src/org/redkale/net/http/HttpCacheable.java
index 83f1d04db..25142c9e0 100644
--- a/src/org/redkale/net/http/HttpCacheable.java
+++ b/src/org/redkale/net/http/HttpCacheable.java
@@ -8,6 +8,8 @@ package org.redkale.net.http;
 import java.lang.annotation.*;
 
 /**
+ * 配合 BasedHttpServlet 使用， 当标记为 @HttpCacheable 的方法使用response.finish的参数将被缓存一定时间(默认值timeout=15秒)。
+ * 通常情况下 @HttpCacheable 需要与 @AuthIgnore 一起使用，因为没有标记@AuthIgnore的方法一般输出的结果与当前用户信息有关。
  *
  * @author zhangjx
  */
diff --git a/src/org/redkale/net/http/MimeType.java b/src/org/redkale/net/http/MimeType.java
index b54533a57..fd98b7071 100644
--- a/src/org/redkale/net/http/MimeType.java
+++ b/src/org/redkale/net/http/MimeType.java
@@ -169,72 +169,30 @@ public class MimeType {
         contentTypes.put("zip", "application/zip");
     }
 
-    /**
-     * @param extension the extension
-     *
-     * @return the content type associated with <code>extension</code>. If no association is found, this method will return <code>text/plain</code>
-     */
     public static String get(String extension) {
-        return get(extension, "text/plain");
+        return contentTypes.getOrDefault(extension, "text/plain");
     }
 
-    /**
-     * @param extension the extension
-     * @param defaultCt the content type to return if there is no known association for the specified extension
-     *
-     * @return the content type associated with <code>extension</code> or if no associate is found, returns <code>defaultCt</code>
-     */
     public static String get(String extension, String defaultCt) {
-        final String mime = contentTypes.get(extension);
-        return mime == null ? defaultCt : mime;
+        return contentTypes.getOrDefault(extension, defaultCt);
     }
 
-    /**
-     * @param extension the extension
-     *
-     * @return <code>true</code> if the specified extension has been registered otherwise, returns <code>false</code>
-     */
     public static boolean contains(String extension) {
         return contentTypes.containsKey(extension);
     }
 
-    /**
-     * <p>
-     * Associates the specified extension and content type </p>
-     *
-     * @param extension   the extension
-     * @param contentType the content type associated with the extension
-     */
     public static void add(String extension, String contentType) {
-        if (extension != null && extension.length() != 0
-                && contentType != null && contentType.length() != 0) {
+        if (extension != null && extension.length() != 0 && contentType != null && contentType.length() != 0) {
             contentTypes.put(extension, contentType);
         }
     }
 
-    /**
-     * @param fileName the filename
-     *
-     * @return the content type associated with <code>extension</code> of the given filename or if no associate is found, returns <code>null</code>
-     */
     public static String getByFilename(String fileName) {
-        String extn = getExtension(fileName);
-        return extn == null ? null : get(extn);
-    }
-
-    /**
-     * Get extension of file, without fragment id
-     */
-    private static String getExtension(String fileName) {
-        // play it safe and get rid of any fragment id
-        // that might be there
         int length = fileName.length();
-
         int newEnd = fileName.lastIndexOf('#');
         if (newEnd == -1) newEnd = length;
-        // Instead of creating a new string.
-        // if (i != -1) fileName = fileName.substring(0, i);
         int i = fileName.lastIndexOf('.', newEnd);
-        return i == -1 ? null : fileName.substring(i + 1, newEnd);
+        return (i < 0) ? null : get(fileName.substring(i + 1, newEnd));
     }
+
 }