title: Using jQuery to post JSON object to Spring 3 controller
body: <p>I'm trying to POST a JSON object to a controller in Spring 3.</p>
  
  <p>I'm getting the following error:</p>
  
  <pre><code>2010-10-20 17:59:14,391 DEBUG [org.springframework.web.servlet.DispatcherServlet] Could not complete request
  org.springframework.http.converter.HttpMessageNotReadableException: Could not read JSON: Unrecognized token 'tilI': was expecting 'null', 'true' or 'false'
   at [Source: org.apache.catalina.connector.CoyoteInputStream@1509a99; line: 1, column: 9]; nested exception is org.codehaus.jackson.JsonParseException: Unrecognized token 'tilI': was expecting 'null', 'true' or 'false'
   at [Source: org.apache.catalina.connector.CoyoteInputStream@1509a99; line: 1, column: 9]
   at org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.readInternal(MappingJacksonHttpMessageConverter.java:138)
   at org.springframework.http.converter.AbstractHttpMessageConverter.read(AbstractHttpMessageConverter.java:154)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.readWithMessageConverters(HandlerMethodInvoker.java:643)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveRequestBody(HandlerMethodInvoker.java:607)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:346)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:171)
   at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:427)
   at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:415)
   at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:788)
   at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:717)
   at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
   at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
   at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:445)
   at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379)
   at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:292)
   at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213)
   at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171)
   at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
   at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
   at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:381)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
   at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
   at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
   at java.lang.Thread.run(Thread.java:662)
  Caused by: org.codehaus.jackson.JsonParseException: Unrecognized token 'tilI': was expecting 'null', 'true' or 'false'
   at [Source: org.apache.catalina.connector.CoyoteInputStream@1509a99; line: 1, column: 9]
   at org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1150)
   at org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParserMinimalBase.java:324)
   at org.codehaus.jackson.impl.Utf8StreamParser._reportInvalidToken(Utf8StreamParser.java:1220)
   at org.codehaus.jackson.impl.Utf8StreamParser._matchToken(Utf8StreamParser.java:1188)
   at org.codehaus.jackson.impl.Utf8StreamParser.nextToken(Utf8StreamParser.java:184)
   at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2017)
   at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:1974)
   at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1331)
   at org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.readInternal(MappingJacksonHttpMessageConverter.java:135)
   ... 42 more
  2010-10-20 17:59:14,391 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/cfs].[Spring MVC Dispatcher Servlet]] Servlet.service() for servlet Spring MVC Dispatcher Servlet threw exception
  org.codehaus.jackson.JsonParseException: Unrecognized token 'tilI': was expecting 'null', 'true' or 'false'
   at [Source: org.apache.catalina.connector.CoyoteInputStream@1509a99; line: 1, column: 9]
   at org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1150)
   at org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParserMinimalBase.java:324)
   at org.codehaus.jackson.impl.Utf8StreamParser._reportInvalidToken(Utf8StreamParser.java:1220)
   at org.codehaus.jackson.impl.Utf8StreamParser._matchToken(Utf8StreamParser.java:1188)
   at org.codehaus.jackson.impl.Utf8StreamParser.nextToken(Utf8StreamParser.java:184)
   at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2017)
   at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:1974)
   at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1331)
   at org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.readInternal(MappingJacksonHttpMessageConverter.java:135)
   at org.springframework.http.converter.AbstractHttpMessageConverter.read(AbstractHttpMessageConverter.java:154)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.readWithMessageConverters(HandlerMethodInvoker.java:643)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveRequestBody(HandlerMethodInvoker.java:607)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:346)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:171)
   at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:427)
   at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:415)
   at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:788)
   at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:717)
   at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
   at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
   at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:445)
   at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379)
   at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:292)
   at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213)
   at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171)
   at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
   at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
   at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:381)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
   at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
   at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
   at java.lang.Thread.run(Thread.java:662)
  2010-10-20 17:59:14,393 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/cfs].[default]] Servlet.service() for servlet default threw exception
  org.codehaus.jackson.JsonParseException: Unrecognized token 'tilI': was expecting 'null', 'true' or 'false'
   at [Source: org.apache.catalina.connector.CoyoteInputStream@1509a99; line: 1, column: 9]
   at org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1150)
   at org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParserMinimalBase.java:324)
   at org.codehaus.jackson.impl.Utf8StreamParser._reportInvalidToken(Utf8StreamParser.java:1220)
   at org.codehaus.jackson.impl.Utf8StreamParser._matchToken(Utf8StreamParser.java:1188)
   at org.codehaus.jackson.impl.Utf8StreamParser.nextToken(Utf8StreamParser.java:184)
   at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2017)
   at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:1974)
   at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1331)
   at org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.readInternal(MappingJacksonHttpMessageConverter.java:135)
   at org.springframework.http.converter.AbstractHttpMessageConverter.read(AbstractHttpMessageConverter.java:154)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.readWithMessageConverters(HandlerMethodInvoker.java:643)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveRequestBody(HandlerMethodInvoker.java:607)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:346)
   at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:171)
   at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:427)
   at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:415)
   at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:788)
   at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:717)
   at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
   at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
   at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:445)
   at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379)
   at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:292)
   at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213)
   at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171)
   at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
   at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
   at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:381)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
   at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
   at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
   at java.lang.Thread.run(Thread.java:662)
  </code></pre>
  
  <p>My Controller:</p>
  
  <pre><code>@RequestMapping(value = MappingConstants.RULE_ASSIGNMENT, method = RequestMethod.POST)
   public String saveRuleAssignment(@RequestBody RuleAssignmentCO ruleAssignment) {
  
    return MappingConstants.REDIRECT + MappingConstants.RULE_ASSIGNMENT;
   }
  </code></pre>
  
  <p>My jQuery javascript:</p>
  
  <pre><code>  ruleAssignment = {
     titleId: titleId,
     typeId: typeId,
     seriesId: seriesId
              }
  
    jQuery.ajax({
     url: 'ruleAssignment',
     type: 'POST',
     dataType: 'json',
     data: ruleAssignment,
          contentType: 'application/json',
          success: function(result) {
           console.log('here');
          }
    });
  </code></pre>