org.springframework.web.HttpMediaTypeNotAccepta...

话说我的环境是spring mvc 3.1 m2,在spring-mvc-showcase中我是没有看到有特别的设置的..所以我在项目中也没有特别的设置,

所以就出现了这样的错误了.

解决的办法如下:

		<!-- Jackson JSON Processor -->
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-asl</artifactId>
			<version>1.8.1</version>
		</dependency>

		<!-- 这个是Rome Atom+RSS 的设置,可以忽略-->
		<dependency>
			<groupId>net.java.dev.rome</groupId>
			<artifactId>rome</artifactId>
			<version>1.0.0</version>
		</dependency> 

Controller代码

/*
*produces="application/json"是必须的
*/
	@RequestMapping(value="/json", method=RequestMethod.GET,produces="application/json")
	public @ResponseBody JavaBean writeJson() {
		return new JavaBean("bar", "fruit");
	}

Context.xml

	<!--Dispatches requests mapped to POJO @Controllers implementations-->
	<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                 <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"/>
            </list>
        </property>
	</bean>

如果还不行在添加一个