jfinal接口开发的一些要点

service端：

BaseResponse对象描述返回格式，如：

{
  "code": 1,
  "message": "成功查询到该用户信息",
  "data": {
    "name": "wuliao",
    "lover": "rose",
    "sex": 1,
    "email": "[email protected]"
  }
}

 

DatumResponse与DataResponse继承BaseResponse对象分别用来包装单个对象与对象list；

修改Model类增加新方法：

public DatumResponse getById(String id){
     DatumResponse response = new DatumResponse();
     M modelClass = null;
        if (StringUtil.isNotEmptyOrNull(id)) 
         modelClass = findById(id);

        if (modelClass == null) {
            response.setCode(Code.FAIL).setMessage(getClass().getName()+" is not found");
        } else {
            response.setDatum(modelClass);
        }
     return response;
    }
    
    public DataResponse getList(String sql, Object... paras){
     DataResponse resp = new DataResponse();
  List<M> result = null;
        if (paras!=null) 
         result = find(sql,paras);                    
        if (result == null || result.size() == 0) {
            resp.setMessage("未查询到数据");
        } else {
            resp.setMessage("success");
            resp.setData(result);
        }
  return resp;
    }
    
    public DatumResponse getFirst(String sql, Object... paras){
     DatumResponse response = new DatumResponse();
     M modelClass = null;
        if (paras!=null) 
         modelClass = findFirst(sql, paras);

        if (modelClass == null) {
            response.setCode(Code.FAIL).setMessage(getClass().getName()+" is not found");
        } else {
            response.setDatum(modelClass);
        }
     return response;
    }

 

    在controller中返回封装对象即可，如：

/**
     * 根据id号查询单个用户
     */
 public void getEmp() {
     renderJson(Emp.dao.getUserById(getPara("userId")));
    }
    /**
     * 查询某机构用户列表
     */
    public void getUserListOfOrg() {
     renderJson(Emp.dao.getUserListOfOrg(getPara("orgId")));
    }

 

portal端：

主要是jackson的解析需要注意ObjectMapper的一些设置，如：

ObjectMapper objectMapper = Jackson.getJson().getObjectMapper();
        objectMapper.setPropertyNamingStrategy(PropertyNamingStrategy.CAMEL_CASE_TO_LOWER_CASE_WITH_UNDERSCORES);
        objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);

        objectMapper.setSerializationInclusion(Include.NON_NULL);
        objectMapper.getDeserializationConfig().withoutFeatures(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);

        objectMapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));                    

        objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

        objectMapper.configure(com.fasterxml.jackson.core.JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);

 

另一点需要注意的是单对象的转换与list的对象转稍有差异：

单对象：

return objectMapper.readValue(jsonString, type);

 

对象list:

TypeFactory t = TypeFactory.defaultInstance();

return objectMapper.readValue(jsonString,t.constructCollectionType(ArrayList.class,type));

 

 

 备注：参考了空谷幽兰的设计，TKS