英文:
How to solve conflicting getter definitions for property in jackson without access to source
问题
我遇到了这个错误：
HTTP状态500 - 无法编写JSON：属性"oid"存在冲突的getter定义
问题在于该类有两个类似的方法：
getOID（已弃用）和 getOid
但我无法修改这个类，因为它只是一个依赖项。
有办法解决这个问题吗？
英文:
I'm getting this error:
HTTP Status 500 - Could not write JSON: Conflicting getter definitions for property "oid"
The problem is that the class has two similar methods:
getOID (deprecated) and getOid
But I cannot modify the class as it's just a dependency.
Is there a way to fix this issue?
答案1
得分: 2
如果您无法修改POJO，您可以实现自定义序列化器或使用MixIn特性。
假设您的类如下所示：
class Id {private int oid;@Deprecatedpublic int getOID() {return oid;}public int getOid() {return oid;}public void setOid(int oid) {this.oid = oid;}@Overridepublic String toString() {return "oid=" + oid;}}
您需要创建一个带有额外配置的接口：
interface IdIgnoreConflictMixIn {@JsonIgnoreint getOID();@JsonPropertyint getOid();}
现在，您需要注册这个接口：
import com.fasterxml.jackson.annotation.JsonIgnore;import com.fasterxml.jackson.annotation.JsonProperty;import com.fasterxml.jackson.databind.ObjectMapper;import java.io.IOException;public class JsonMixInApp {public static void main(String[] args) throws IOException {Id id = new Id();id.setOid(1);ObjectMapper mapper = new ObjectMapper();mapper.addMixIn(Id.class, IdIgnoreConflictMixIn.class);mapper.writeValue(System.out, id);}}
以上代码输出：
{"oid":1}
另请参阅：
- 特定类中特定类型的自定义Jackson序列化器
- @JsonIgnore注解的等效代码设置是什么？
- Jackson解析带有去除根元素但无法设置@JsonRootName的JSON
- 使Jackson序列化器覆盖特定的被忽略字段
英文:
If you can not modify POJO you can implement custom serialiser or use MixIn feature.
Assume, your class looks like below:
class Id {private int oid;@Deprecatedpublic int getOID() {return oid;}public int getOid() {return oid;}public void setOid(int oid) {this.oid = oid;}@Overridepublic String toString() {return "oid=" + oid;}}
You need to create an interface with extra configuration:
interface IdIgnoreConflictMixIn {@JsonIgnoreint getOID();@JsonPropertyint getOid();}
Now, you need to register this interface:
import com.fasterxml.jackson.annotation.JsonIgnore;import com.fasterxml.jackson.annotation.JsonProperty;import com.fasterxml.jackson.databind.ObjectMapper;import java.io.IOException;public class JsonMixInApp {public static void main(String[] args) throws IOException {Id id = new Id();id.setOid(1);ObjectMapper mapper = new ObjectMapper();mapper.addMixIn(Id.class, IdIgnoreConflictMixIn.class);mapper.writeValue(System.out, id);}}
Above code prints:
{"oid":1}
See also:
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