Java JSON转成List结构数据

ObjectMapper mapper = new ObjectMapper(); JavaType javaType = mapper.getTypeFactory().constructParametricType(List.class, ApprWritUnionFormModel.class); /*List<FormModel> writUnionFormList =   JSON.parseArray(params, FormModel.class);*/ List<FormModel> writUnionFormList=new ArrayList<FormModel>(); try {  writUnionFormList = (List<FormModel>)mapper.readValue(params, javaType); } catch (JsonParseException e) {  e.printStackTrace(); } catch (JsonMappingException e) {  e.printStackTrace(); } catch (IOException e) {  e.printStackTrace(); }

List<FormModel> writUnionFormList =   JSON.parseArray(params, FormModel.class);