背景
需要一套干净的Spring+Spring MVC+Mybatis框架，框架写到返回Json的环节报错了。
问题
无法Json，报406
解决
需要配置Json工具包，这里用Jackson
Maven Jackson
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.6.0</version> </dependency> <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.6.0</version> </dependency> <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.6.0</version> </dependency>
工程环境SpringMvc 4.x，不兼容Jackson2.9最新版。这里特应用2.6版本
Spring Mvc配置
<!--Begin:使用Jackson 2.x的配置，需要导入的jar包：jackson-core-xxx.jar、jackson-annotations-xxx.jar、jackson-databind-xxx.jar--> <!--通过处理器映射DefaultAnnotationHandlerMapping来开启支持@Controller注解--> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping" /> <!--通过处理器适配器AnnotationMethodHandlerAdapter来开启支持@RequestMapping注解--> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"> <property name="messageConverters"> <list> <!-- 设置返回字符串编码 --> <bean class="org.springframework.http.converter.StringHttpMessageConverter"> <property name = "supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> <value>application/json;charset=UTF-8</value> </list> </property> </bean> <!-- json转换器 --> <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> <value>application/json;charset=UTF-8</value> </list> </property> </bean> </list> </property> </bean> <!--End:使用Jackson 2.x的配置，需要导入的jar包：jackson-core-xxx.jar、jackson-annotations-xxx.jar、jackson-databind-xxx.jar-->
好了，重启不报错（一般就是jar宝冲突），就可以正常接收到@ResponseBody返回的Json了。
以上配置，带来好运，祝好 ！
by.沫沫金
我得纯净框架，新模块只需要一个Controller就可以，CRUD一句话全搞定。前台专注Form就行。
