萌新求教！springMVC 使用注解@ResponseBody 不能返回JSON数据求指导！

Question

控制器中代码@RequestMapping(value="/listArea",method=RequestMethod.GET)@ResponseBodyprivateMaplistArea(){MapmodelMap=newHashMap();Listlist=areaService.getAreaList();modelMap.put("rows",list);modelMap.put("total",list.size());returnmodelMap;}xml中的使用了这个pom.xml引入下列依赖com.fasterxml.jackson.corejackson-core2.9.8com.fasterxml.jackson.corejackson-annotations2.9.0javax.servletjavax.servlet-api3.1.0访问接口时报错WARNorg.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver-Resolved[org.springframework.http.converter.HttpMessageNotWritableException:Noconverterfoundforreturnvalueoftype:classjava.util.HashMap]DEBUGorg.springframework.web.servlet.DispatcherServlet-Completed500INTERNAL_SERVER_ERROR

Answer 1

缺少Jackson的绑定依赖,加上这个依赖试试
com.fasterxml.jackson.core
jackson-databind
${jackson.version}
如果还不行参考这个链接的做法，再加个配置：解决java.lang.IllegalArgumentException:Noconverterfoundforreturnvalueof
                            

Answer 2

com.alibaba
fastjson
1.2.58
这个依赖引入一下试试看