Hi,

ich versuche mittels des Controllers einen JSON String zu responsen. Nach einigem google bin ich auf folgende Lösung gekommen:

Controller:

Code java:

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@SuppressWarnings({ "unchecked", "rawtypes" })     @RequestMapping(value = "/login/register/exuser", method = RequestMethod.POST)     public Map existsUser(@RequestParam(value="name", required=true) String name){         Map response = new TreeMap();                 int status = this.bc.existsUser(name);                 response.put("status", status);         response.put("msg", this.msg.getMsg(status));                 return response;     }

servlet.xml

Code xml:

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<?xml version="1.0" encoding="UTF-8"?> <beans:beans xmlns="http://www.springframework.org/schema/mvc"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:beans="http://www.springframework.org/schema/beans"     xmlns:context="http://www.springframework.org/schema/context"     xsi:schemaLocation="http://www.springframework.org/schema/mvc [url]http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd[/url]         [url]http://www.springframework.org/schema/beans[/url] [url]http://www.springframework.org/schema/beans/spring-beans-3.0.xsd[/url]         [url]http://www.springframework.org/schema/context[/url] http://www.springframework.org/schema/context/spring-context-3.0.xsd">       <!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->         <!-- Enables the Spring MVC @Controller programming model -->     <annotation-driven />       <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->     <resources mapping="/resources/**" location="/resources/" />       <!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->     <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">         <beans:property name="prefix" value="/WEB-INF/jsp/" />         <beans:property name="suffix" value=".jsp" />     </beans:bean>         <context:component-scan base-package="de.tudresden.mmt.kpmi.web" />         <!-- Transporting JSON - Data -->     <beans:bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">         <beans:property name="mediaTypes">             <beans:map>                 <beans:entry key="json" value="application/json"/>             </beans:map>         </beans:property>         <beans:property name="defaultViews">             <beans:list>                 <beans:bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView">                     <beans:property name="prefixJson" value="true"/>                 </beans:bean>             </beans:list>         </beans:property>     </beans:bean>   </beans:beans>

Wenn ich die Anwendung jetzt starte bekomme ich folgenden Fehler:

Code :

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org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.view.ContentNegotiatingViewResolver#0' defined in ServletContext resource [/WEB-INF/spring-ws-servlet.xml]: Cannot create inner bean 'org.springframework.web.servlet.view.json.MappingJacksonJsonView#3b8b780f' of type [org.springframework.web.servlet.view.json.MappingJacksonJsonView] while setting bean property 'defaultViews' with key [0]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.view.json.MappingJacksonJsonView#3b8b780f' defined in ServletContext resource [/WEB-INF/spring-ws-servlet.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException:  Could not instantiate bean class [org.springframework.web.servlet.view.json.MappingJacksonJsonView]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/codehaus/jackson/map/ObjectMapper

Wo liegt das Problem?

Vielen Dank,

Zack

Hat sich erledigt, im Springforum konnte mir geholfen werden. Mir fehlte die org.codehaus.jackson lib.