JSON post to Spring Controller

Question

Hi I am starting with Web Services in Spring  so I am trying to develop small application in Spring   JSON   Hibernate  I have some problem with HTTP-POST  I created a method    RequestMapping value   workers addNewWorker   method   RequestMethod POST  produces    application json   consumes    application json    ResponseBody public String addNewWorker  RequestBody Test test  throws Exception       String name   test name      return name      And my model Test looks like   public class Test implements Serializable    private static final long serialVersionUID   -1764970284520387975L  public String name   public Test           By POSTMAN I am sending simply JSON   name   testName   and I always get error   The server refused this request because the request entity is in a format not supported by the requested resource for the requested method    I imported Jackson library  My GET methods works fine  I don t know what I m doing wrong  I am grateful for any suggestions

User · Answer

Try to using application   instead  And use JSON maybeJson   to check the data structure in the controller

User · Answer

Convert your JSON object to JSON String using   JSON stringify   name   testName      or manually   RequestBody expecting json string instead of json object   Note stringify function having issue with some IE version  firefox it will work  verify the syntax of your ajax request for POST request  processData false property is required in ajax request    ajax        url urlName      type  POST        contentType   application json  charset utf-8       data  jsonString    Stringified Json Object     async  false       Cross-domain requests and dataType   jsonp  requests do not support synchronous operation     cache  false       This will force requested pages not to be cached by the browser        processData false    To avoid making query String instead of JSON      success  function resposeJsonObject              Success Action             Controller   RequestMapping value   urlPattern   method   RequestMethod POST   public  ResponseBody Test addNewWorker  RequestBody Test jsonString           do business logic     return test       RequestBody -Covert Json object to java   ResponseBody - convert Java object to json

User · Answer

You need to include the getters and setters for all the fields that have been defined in the model Test class --  public class Test implements Serializable        private static final long serialVersionUID   -1764970284520387975L       public String name       public Test                 public String getName             return name             public void setName String name            this name   name

User · Answer

see here     The consumable media types of the mapped request  narrowing the primary mapping    the producer is used to narrow the primary mapping  you send request should specify the exact header to match it

User · Answer

Do the following thing if you want to use json as a http request and response  So we need to make changes in  context  xml   lt  -- Configure to plugin JSON as request and response in method handler -- gt   lt beans bean class  org springframework web servlet mvc method annotation RequestMappingHandlerAdapter  gt       lt beans property name  messageConverters  gt           lt beans list gt               lt beans ref bean  jsonMessageConverter   gt           lt  beans list gt       lt  beans property gt   lt  beans bean gt   lt  -- Configure bean to convert JSON to POJO and vice versa -- gt   lt beans bean id  jsonMessageConverter  class  org springframework http converter json MappingJackson2HttpMessageConverter  gt   lt  beans bean gt       MappingJackson2HttpMessageConverter to the RequestMappingHandlerAdapter messageConverters so that Jackson API kicks in and converts JSON to Java Beans and vice versa  By having this configuration  we will be using JSON in request body and we will receive JSON data in the response   I am also providing small code snippet for controller part        RequestMapping value   EmpRestURIConstants DUMMY EMP  method   RequestMethod GET       public  ResponseBody Employee getDummyEmployee         logger info  Start getDummyEmployee        Employee emp   new Employee        emp setId 9999       emp setName  Dummy        emp setCreatedDate new Date         empData put 9999  emp       return emp      So in above code emp object will directly convert into json as a response  same will happen for post also

[java] JSON post to Spring Controller

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