Quickstart - POST request with Command-Controller

The Command-Controller serves you a filled CommandBean. Validating or binding is supported by Spring. But you have to handle binding and validating results in your Controller Class. It is easy to use for simple POST requests.

The json-view response is just the json-String of the Model-Map created in the Controller. No errors are included or values formated.

[Also see Demo-Application]

Spring ApplicationContext 

<beans>
    <bean name="simpleJsonPostFormController" 
          class="org.thing.spring.json.controller.SimpleJsonPostFormController">
            <property name="commandClass">
                <value>org.thing.spring.json.controller.SpringJsonForm</value>
            </property>
    </bean>
    <bean name="urlMapping" 
          class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="/hello.json">simpleJsonPostCommandController</prop>
           </props>
        </property>
    </bean>
    <bean name="viewResolver" 
        class="org.springframework.web.servlet.view.XmlViewResolver" />
</beans>

Spring view.xml

<beans>
    <bean name="jsonView" class="org.springframework.web.servlet.view.json.JsonView"/>
</beans>

form.html

<head>
        <title>
                First Test Spring Json Demo
        </title>
        <script type="text/javascript" src="script/prototype.js"></script>
        <script type="text/javascript" src="script/behaviour.js"></script>
        <script type="text/javascript" src="script/behaviour-roles.js"></script>
        <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"/>
</head>
</head>
<body>
        <h1>Spring JSON DEMO</h1>
        <h2>Spring Ajax Post (SimpleFormControler und CommandController)</h2>
        <form method="post" id="form">
                <input id="placeofbirth" type="text" name="placeofbirth" ><br>
                <input id="birthday" type="text" name="birthday" ><br/>
                <br/>
                <b>place of birth : </b><span id="t_placeofbirth"></span><br/>
                <b>birthday : </b><span id="t_birthday"></span><br/>
        
        </form>
        <br/>
        <button id="clearData">clear name</button>
        <button id="cc_postData">send data to CommandController</button>
</body>

JavaScript behaviour-roles.js

var printResult = function(transport){
                var result = 
                        "Status : " + transport.status
                        + "\n"
                        + "\n"
                        + "Json-Result:"
                        + "\n" + transport.responseText;
                alert(result);
};
var myrules = {
        'button#clearData' : function(element){
                element.onclick = function(){
                        $('t_placeofbirth').innerHTML = '';
                        $('t_birthday').innerHTML = '';
                        $('error').innerHTML = '';
        },
        'button#cc_postData' : function(element){
                element.onclick = function(){
                        new Ajax.Request('hello.json', { 
                                method:'post',
                                parameters: $('form').serialize(false),
                                onSuccess: function(transport){
                                        var json = transport.responseText.evalJSON();
                                        printResult(transport);
                                        $('t_placeofbirth').innerHTML = json.placeofbirth;
                                        $('t_birthday').innerHTML = json.birthday;
                                        $('error').innerHTML = '';
                        },
                        onFailure: function(transport){
                                printResult(transport);
                                addErrors(transport);
                        }
                        
                        });
                }
        }
};
Behaviour.register(myrules);

CommandBean

public class SpringJsonForm {

        private String placeofbirth;
        private Date birthday;
        
        
        public String getPlaceofbirth() {
                return placeofbirth;
        }
        public void setPlaceofbirth(String placeofbirth) {
                this.placeofbirth = placeofbirth;
        }
        public Date getBirthday() {
                return birthday;
        }
        public void setBirthday(Date birthday) {
                this.birthday = birthday;
        }
}

Controller Source

public class SimpleJsonPostCommandController extends AbstractCommandController {
        @Override
        protected void initBinder(HttpServletRequest request,  
                        ServletRequestDataBinder binder) throws Exception{
                SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");
                CustomDateEditor editor = new CustomDateEditor(dateFormat, true);
                binder.registerCustomEditor(Date.class, editor);
        }
        
        @Override
        protected ModelAndView handle(HttpServletRequest request,
                        HttpServletResponse response, Object command,
                        BindException exception) throws Exception {
                
                SpringJsonForm bean = (SpringJsonForm) command;
                
                ModelAndView modelAndView = new ModelAndView("jsonView");
                
                modelAndView.addObject("birthday",  bean.getBirthday());
                modelAndView.addObject("placeofbirth",  bean.getPlaceofbirth());

                return modelAndView;
        }

}

Result

 Status : 200 
 
 Result:
 {"placeofbirth":"Sydney","birthday":"Wed Jan 30 00:00:00 GMT 2008"}