JSON转成List结构数据

                 本文链接：[https://blog.csdn.net/u014427391/article/details/100170157](https://blog.csdn.net/u014427391/article/details/100170157) 

    ObjectMapper mapper = new ObjectMapper();
		JavaType javaType = mapper.getTypeFactory().constructParametricType(List.class,FormModel.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);