@RequestBody Sent Through Spring MVC JSON Jackson Processor

javascript, jquery, json, jsp, spring-mvc

Solution

I tried to play around a little more with your code however was unable to get the same error as you are getting. I've reworked the HTML:

<html>
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.1/jquery.min.js"></script>

<script type="text/javascript"> 

    $(function() { 
        $('#myForm').submit(function() {
            var form = $( this ),
                url = form.attr('action'),
                userId = form.find('input[name="userId"]').val(),
                dat = JSON.stringify({ "userId" : userId });

            $.ajax({
                url : url,
                type : "POST",
                traditional : true,
                contentType : "application/json",
                dataType : "json",
                data : dat,
                success : function (response) {
                    alert('success ' + response);
                },
                error : function (response) {
                    alert('error ' + response);
                },
            });

            return false;
        });
    });

</script>
</head>
<body>
    <h2>Application</h2>
    <form id="myForm" action="application/save">
        <input type="text" name="userId" value="User">
        <input type="submit" value="Submit">
    </form>
</body>
</html>

I had a very simple method similar to yours:

@RequestMapping(value = "save", method = RequestMethod.POST, headers = {"content-type=application/json"})
public @ResponseBody String save (@RequestBody User user) throws Exception
{
    return "save-test";
}

My User class looks like this:

public class User
{
    private String userId;

    public User()
    {
    }

    public String getUserId ()
    {
        return userId;
    }

    public void setUserId (String userId)
    {
        this.userId = userId;
    }
}

My spring config was stripped down to contain:

<context:component-scan base-package="com.web"/> 
<mvc:annotation-driven/> 
<context:annotation-config/>

I'm using spring version 3.1.1 and jquery 1.8.1 (the latest I believe). I'm not getting the same error as you so perhaps you can try some of what I've done and see if that helps.

Problem

I have read some many similiar problems inlcluding: JQuery, Spring MVC @RequestBody and JSON - making it work together JSON request with JQuery/Ajax with Spring The requirement is that the server will only accept application/json types. I am using a Spring MVC Controller. The code sends a response back as JSON through @ResponseBody. I want to get information through the @RequestBody in my Spring MVC Controller. I am using JSP to send JSON to Spring MVC Controller. My code and Spring MVC can be seen below: I am new to JSON and Javascript. JSP - index.jsp ``` <%@page language="java" contentType="text/html"%> <html> <head> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script> <script type="text/javascript"> $('#myForm').on('submit', function(e) { var frm = $("#myForm"); var dat = JSON.stringify(frm.serializeArray()); $.ajax({ type: 'POST', url: $('#myForm').attr('action'), data: dat, contentType: 'application/json', dataType: 'json', error: function() { alert('failure'); } success: function(hxr) { alert("Success: " + xhr); } }); ); }; </script> </head> <body> <h2>Application</h2> <form id="myForm" action="/application/save" method="POST" accept="application/json" onclick="i()"> <input type="text" name="userId" value="User"> <input type="submit" value="Submit"> </form> </body> </html> ``` When running this I am not getting any output. In the Chrome I get 404 Not found error and in Tomcat I get the following error: ``` org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver handleNoSuchRequestHandlingMethod WARNING: No matching handler method found for servlet request: path '/application/sa ve', method 'POST', parameters map['userId' -> array<String>['User']] ``` Is something wrong here in the JSP part? web.xml ``` <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_5.xsd" version="2.5"> <display-name>WebApp</display-name> <context-param>  <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/spring/service.xml</param-value> </context-param> <listener>  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <servlet> <servlet-name>application</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>application</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app> ``` service.xml ``` <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd"> <context:component-scan base-package="com.web"/> <mvc:annotation-driven/> <context:annotation-config/> <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/> <bean id="jacksonMessageChanger" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"> <property name="supportedMediaTypes" value="application/json"/> </bean>  <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <util:list id="beanList"> <ref bean="jacksonMessageChanger"/> </util:list> </property> </bean> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean>  ``` Controller ``` package com.web; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.RequestBody; import com.webchannel.domain.User; import com.webchannel.domain.UserResponse; @Controller @RequestMapping("/application/*") public class SaveController { @RequestMapping(value = "save", method = RequestMethod.POST, headers = {"content-type=application/json"}) public @ResponseBody UserResponse save(@RequestBody User user) throws Exception { UserResponse userResponse = new UserResponse(); System.out.println("UserId :" + " " + user.getUserId()); return userResponse; } @RequestMapping(value = "delete", method = RequestMethod.GET) public @ResponseBody UserResponse delete() { System.out.println("Delete"); UserResponse userResponse = new UserResponse(); userResponse.setSuccess(true); userResponse.setVersionNumber("1.0"); return userResponse; ``` } } When invoking /application/delete I get JSON returned. So I know my JacksonProcessor is configured correctly. The problem is in @RequestBody. Where am I going wrong? If I remove the headers in the code below I get a 415 error. ``` @RequestMapping(value = "save", method = RequestMethod.POST) public @ResponseBody UserResponse save(@RequestBody User user) throws Exception { UserResponse userResponse = new UserResponse(); System.out.println("UserId :" + " " + user.getUserId()); return userResponse; } ``` I am almost close but help would be appreciated.

Original source

@RequestBody Sent Through Spring MVC JSON Jackson Processor

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