Index: java/org/apache/coyote/http11/AbstractHttp11Protocol.java
===================================================================
--- java/org/apache/coyote/http11/AbstractHttp11Protocol.java	(revision 1784707)
+++ java/org/apache/coyote/http11/AbstractHttp11Protocol.java	(working copy)
@@ -142,7 +142,7 @@
     }
 
 
-    private String compressableMimeType = "text/html,text/xml,text/plain,text/css,text/javascript,application/javascript";
+    private String compressableMimeType = "text/html,text/xml,text/plain,text/css,text/javascript,application/javascript,application/json,application/xml";
     private String[] compressableMimeTypes = null;
     public String getCompressableMimeType() { return compressableMimeType; }
     public void setCompressableMimeType(String valueS) {
Index: webapps/docs/config/http.xml
===================================================================
--- webapps/docs/config/http.xml	(revision 1784707)
+++ webapps/docs/config/http.xml	(working copy)
@@ -352,7 +352,7 @@
       compression may be used.
       The default value is
       <code>
-      text/html,text/xml,text/plain,text/css,text/javascript,application/javascript
+      text/html,text/xml,text/plain,text/css,text/javascript,application/javascript,application/json,application/xml
       </code>.
       </p>
     </attribute>