Add Jackson 2 HttpMessageConverter and View

Jackson 2 uses completely new package names and new maven artifact ids.
This change adds Jackson 2 as an optional dependency and also provides
MappingJackson2HttpMessageConverter and MappingJackson2JsonView for use
with the new version.

The MVC namespace and the MVC Java config detect and use
MappingJackson2HttpMessageConverter if Jackson 2 is present.
Otherwise if Jackson 1.x is present,
then MappingJacksonHttpMessageConverter is used.

Issue: SPR-9302

src/dist/changelog.txt

@@ -13,6 +13,7 @@ Changes in version 3.2 M1
 * fix case-sensitivity issue with some containers on access to 'Content-Disposition' header
 * add Servlet 3.0 based async support
 * fix issue with encoded params in UriComponentsBuilder
+* add Jackson 2 HttpMessageConverter and View types
 
 Changes in version 3.1.1 (2012-02-16)
 -------------------------------------

src/reference/docbook/mvc.xml

@@ -2892,7 +2892,7 @@ public String upload(...) {
   </property>
   <property name="defaultViews">
     <list>
-      <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
+      <bean class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" />
     </list>
   </property>
 </bean>
@@ -2924,7 +2924,7 @@ public String upload(...) {
       the <classname>SampleContentAtomView</classname> if the view name
       returned is <classname>content</classname>. If the request is made with
       the file extension <literal>.json</literal>, the
-      <classname>MappingJacksonJsonView</classname> instance from the
+      <classname>MappingJackson2JsonView</classname>instance from the
       <literal>DefaultViews</literal> list will be selected regardless of the
       view name. Alternatively, client requests can be made without a file
       extension but with the <literal>Accept</literal> header set to the
@@ -3588,7 +3588,7 @@ public String onSubmit(<emphasis role="bold">@RequestPart("meta-data") MetaData
       However, the <literal>@RequestPart("meta-data") MetaData</literal>
       method argument in this case is read as JSON content based on its
       <literal>'Content-Type'</literal> header and converted with the help of
-      the <classname>MappingJacksonHttpMessageConverter</classname>.</para>
+      the <classname>MappingJackson2HttpMessageConverter</classname>.</para>
     </section>
   </section>
 
@@ -4256,9 +4256,10 @@ public class WebConfig {
                 </listitem>
 
                 <listitem>
-                  <para><classname>MappingJacksonHttpMessageConverter</classname>
-                  converts to/from JSON — added if Jackson is present on the
-                  classpath.</para>
+                  <para><classname>MappingJackson2HttpMessageConverter</classname>
+                  (or <classname>MappingJacksonHttpMessageConverter</classname>)
+                  converts to/from JSON — added if Jackson 2 (or Jackson) is present
+                  on the classpath.</para>
                 </listitem>
 
                 <listitem>

src/reference/docbook/remoting.xml

@@ -1363,7 +1363,7 @@ if (HttpStatus.SC_CREATED == post.getStatusCode()) {
       these defaults using the <methodname>messageConverters()</methodname> bean
       property as would be required if using the
       <classname>MarshallingHttpMessageConverter</classname> or 
-      <classname>MappingJacksonHttpMessageConverter</classname>.</para>
+      <classname>MappingJackson2HttpMessageConverter</classname>.</para>
 
       <para>Each method takes URI template arguments in two forms, either as a
       <literal>String</literal> variable length argument or a
@@ -1608,7 +1608,7 @@ String body = response.getBody();</programlisting>
       </section>
       
       <section id="rest-mapping-json-converter">
-        <title>MappingJacksonHttpMessageConverter</title>
+        <title>MappingJackson2HttpMessageConverter (or MappingJacksonHttpMessageConverter with Jackson 1.x)</title>
         
         <para>An <interfacename>HttpMessageConverter</interfacename> 
         implementation that can read and write JSON using Jackson's 

src/reference/docbook/view.xml

@@ -2626,7 +2626,9 @@ simpleReport.reportDataKey=myBeanData</programlisting>
   <section id="view-json-mapping">
   	<title>JSON Mapping View</title>
   	
-  	<para>The <classname>MappingJacksonJsonView</classname> uses the Jackson 
+        <para>The <classname>MappingJackson2JsonView</classname>
+        (or <classname>MappingJacksonJsonView</classname> depending on the
+        the Jackson version you have) uses the Jackson
   	library's <classname>ObjectMapper</classname> to render the response content 
   	as JSON. By default, the entire contents of the model map (with the exception 
   	of framework-specific classes) will be encoded as JSON. For cases where the