我有以下json数据
{"id":10606,
"name":"ProgrammerTitle",
"objectMap":{"programme-title":"TestProgramme","working-title":"TestProgramme"}
}
我想将此数据设置为我的pojo对象
public class TestObject {
private Long id;
private String name;
@JsonProperty("programme-title")
private String programmeTitle;
@JsonProperty("working-title")
private String workingTitle;
}
在这里,我可以在测试对象中设置id和name,但对于对象图,我无法设置数据。
所以我在ObjectMap上创建了更多类,其中包含programmeTitle& workingTitle这个工作正常但我不能直接将这个字段设置到我的pojo对象 这有可能设置吗?
我正在使用Jackson Object Mapper转换json数据。
如果我在我的pojo中创建另一个java对象,它正常工作,如:
public class TestObject {
private Long id;
private String name;
@JsonProperty("objectMap")
private ObjectMap objectMap;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public ObjectMap getObjectMap() {
return objectMap;
}
public void setObjectMap(ObjectMap objectMap) {
this.objectMap = objectMap;
}
}
public class ObjectMap {
@JsonProperty("programme-title")
private String programmeTitle;
@JsonProperty("working-title")
private String workingTitle;
public String getProgrammeTitle() {
return programmeTitle;
}
public void setProgrammeTitle(String programmeTitle) {
this.programmeTitle = programmeTitle;
}
public String getWorkingTitle() {
return workingTitle;
}
public void setWorkingTitle(String workingTitle) {
this.workingTitle = workingTitle;
}
}
答案 0 :(得分:2)
如果您的JSON是这样的
{"id":10606,
"name":"ProgrammerTitle",
"objectMap":{"programme-title":"TestProgramme","working-title":"TestProgramme"}
}
那么你可以写这样的对象映射器类..
public class Program{
public static class ObjectMap{
private String programme_title, working_title;
public String getprogramme_title() { return programme_title; }
public String getworking_title() { return working_title; }
public void setprogramme_title(String s) { programme_title= s; }
public void setworking_title(String s) { working_title= s; }
}
private ObjectMap objMap;
private String name;
public ObjectMap getobjectMap () { return objMap; }
public void setObjectMap (ObjectMap n) { objMap= n; }
private Long id;
public Long getId() {return id;}
public void setId(Long id) {this.id = id;}
private String name;
public String getName() {return name;}
public void setName(String name) {this.name = name;}
}
请参阅此check it
答案 1 :(得分:1)
您可以为此类编写自己的反序列化程序:
class EntityJsonDeserializer extends JsonDeserializer<Entity> {
@Override
public Entity deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
Root root = jp.readValueAs(Root.class);
Entity entity = new Entity();
entity.setId(root.id);
entity.setName(root.name);
if (root.objectMap != null) {
entity.setProgrammeTitle(root.objectMap.programmeTitle);
entity.setWorkingTitle(root.objectMap.workingTitle);
}
return entity;
}
private static class Root {
public Long id;
public String name;
public Title objectMap;
}
private static class Title {
@JsonProperty("programme-title")
public String programmeTitle;
@JsonProperty("working-title")
public String workingTitle;
}
}
您的实体:
@JsonDeserialize(using = EntityJsonDeserializer.class)
class Entity {
private Long id;
private String name;
private String programmeTitle;
private String workingTitle;
//getters, setters, toString
}
用法示例:
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
public class JacksonProgram {
public static void main(String[] args) throws IOException {
ObjectMapper mapper = new ObjectMapper();
Entity entity = mapper.readValue(jsonString, Entity.class);
System.out.println(entity);
}
}
以上程序打印:
Entity [id=10606, name=ProgrammerTitle, programmeTitle=TestProgramme, workingTitle=TestProgramme]