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/ 12 Years ago, tue, september 18, 2012, 12:00:00
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>
<!-- Specifies the list of Spring Configuration files in comma separated format.-->
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/service.xml</param-value>
</context-param>
<listener>
<!-- Loads your Configuration Files-->
<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>
<list>
<ref bean=jacksonMessageChanger/>
</list>
</property>
</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>
<!-- <bean class=org.springframework.web.servlet.view.ContentNegotiatingViewResolver>
<property name=mediaTypes>
<map>
<entry key=json value=application/json/>
</map>
</property>
</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.
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