I have an array of object as ArrayList which I want to convert to JSON and send it to client over HttpResponse using Java and Jackson.
How I can do this?
-
1using spring framework?karthik manchala– karthik manchala2015-03-23 09:49:04 +00:00Commented Mar 23, 2015 at 9:49
-
1what you tried? Check mkyong.com/java/how-to-convert-java-object-to-from-json-jackson after use spring....Jordi Castilla– Jordi Castilla2015-03-23 09:50:51 +00:00Commented Mar 23, 2015 at 9:50
-
Here I Have to write the objects first to a file. No conflict will happened if multiple users trying to access same code?ayman salah– ayman salah2015-03-23 09:57:35 +00:00Commented Mar 23, 2015 at 9:57
Add a comment
|
1 Answer
Assuming you already put jackson library and using Spring framework. Mentioned following line in your spring context file.
<!-- Configure to plugin JSON as request and response in method handler -->
<beans:bean
class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
<beans:property name="messageConverters">
<beans:list>
<beans:ref bean="jsonMessageConverter" />
</beans:list>
</beans:property>
</beans:bean>
and Return the List/Map/Object from controller and it will internally convert it to JSON
For Non Spring:
doPost(HttpServletRequest req, HttpServletResponse resp)
{
ObjectMapper mapper = new ObjectMapper();
ArrayNode rootNode = mapper.readValue(req.getReader(), ArrayNode.class);
}
Source:
Passing array from javascript to java servlet using Jackson
http://software.danielwatrous.com/restful-java-servlet-serializing-tofrom-json-with-jackson/
Hope this helps :)
Do share your environment details if it was still not helpful and i will try to help :)
2 Comments
ayman salah
I don't have Spring framewark
Om.
i just updated my answer for non spring...servlet based scenario ..hope it helps