ObjectMapper 返回json 串
@RequestMapping(value="getCountyBycityId")
public void getCountyBycityId(HttpServletRequest request,HttpServletResponse response) throws Exception{
Long cityId = Long.parseLong(request.getParameter("cityId"));
ObjectMapper mapper = new ObjectMapper();
List<CrmProvinceCity> list = creditContractService.getCountyBycityId(cityId);
String jsonString = mapper.writeValueAsString(list);
response.setContentType("text/json;charset=utf-8");
response.getWriter().print(jsonString);
}
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