我正在尝试解析由 KendoUI 网格发送到我的 Web 服务的过滤器参数,并且在说服杰克逊解析这个 JSON 时遇到了一些问题。据我所知,我可以控制 Kendo 发送的参数的格式,但我不知道如何将参数编组为更好的格式,因此它们现在保持不变。
我打算将这些参数转换为 Oracle 数据库的 SQL 查询。
示例 JSON:
{
"filters":
[
{
"field": "Name",
"operator": "contains",
"value": "John"
},
{
"filters": [
{
"field": "Age",
"operator": "gt",
"value": 20
},
{
"field": "Age",
"operator": "lt",
"value": 85
}
],
"logic", "and"
},
{
"field": "Address",
"operator": "doesnotcontain",
"value": "street"
}
],
"logic": "or"
}
过滤器。爪哇
public class Filters {
private List<Filter> filters;
private String logic;
// accessors/mutators/toString
}
过滤器.java
public class Filter {
private String field;
private String operator;
private String value;
// accessors/mutators/toString
}
单元测试
public class KendoGridFilterTest {
private ObjectMapper mapper;
@Before
public void before() {
mapper = new ObjectMapper();
}
@Test
public void jsonParseTest() {
final String json = "{\"filters\":[{\"field\":\"Name\",\"operator\":\"contains\",\"value\":\"John\"},{filters: [{\"field\":\"Age\",\"operator\": \"eq\",\"value\": 85},{\"field\": \"Age\",\"operator\": \"eq\",\"value\": 85}]\"logic\", \"and\",},{\"field\": \"Address\",\"operator\": \"doesnotcontain\",\"value\": \"street\"}],\"logic\":\"or\"}";
Filters filters = mapper.readValue(json, Filters.class);
assertTrue(json.equals(filters.writeValueAsString(filters);
}
}
错误
com.fasterxml.jackson.databind.UnrecognizedPropertyException:无法识别的字段 '逻辑'(com.example.Filter)不是市场可忽略的(3个已知属性 “值”、“字段”、“运算符”) 在 [来源:java.io.StringReader@3bb2b8;行:1,第 76 列](通过参考 链:com.example.Filters["filters"]->com.example.Filter["logic"]
我也尝试添加@JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class, property="@id")
到 Filters 类并得到相同的错误。