diff -r 000000000000 -r 373ffda63c9a src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/staxex/ByteArrayOutputStreamEx.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/staxex/ByteArrayOutputStreamEx.java	Wed Apr 27 01:27:09 2016 +0800
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.xml.internal.org.jvnet.staxex;
+
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+import java.io.IOException;
+
+/**
+ * {@link ByteArrayOutputStream} with access to its raw buffer.
+ *
+ * @author Kohsuke Kawaguchi
+ */
+final class ByteArrayOutputStreamEx extends ByteArrayOutputStream {
+    public ByteArrayOutputStreamEx() {
+    }
+
+    public ByteArrayOutputStreamEx(int size) {
+        super(size);
+    }
+
+    public void set(Base64Data dt,String mimeType) {
+        dt.set(buf,count,mimeType);
+    }
+
+    public byte[] getBuffer() {
+        return buf;
+    }
+
+    /**
+     * Reads the given {@link InputStream} completely into the buffer.
+     */
+    public void readFrom(InputStream is) throws IOException {
+        while(true) {
+            if(count==buf.length) {
+                // realllocate
+                byte[] data = new byte[buf.length*2];
+                System.arraycopy(buf,0,data,0,buf.length);
+                buf = data;
+            }
+
+            int sz = is.read(buf,count,buf.length-count);
+            if(sz<0)     return;
+            count += sz;
+        }
+    }
+}