java - 想要使用 arraylist 将 json 字符串反序列化为 java 对象

Question

java对象:MyObject有AnotherObject1的列表，AnotherObject1也有AnotherObject2的列表

class MyObject{

private String                  status;

private String                  message;

private List<AnotherObject1>            data;
public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public List<AnotherObject1> getData() {
        return data;
    }

    public void setData(List<AnotherObject1> data) {
        this.data = data;
        }
}

Class AnotherObject1{
private Integer                 group_id;

 private List<AnotherObject2>           anotherList;
public Integer getGroup_id() {
   return group_id;
}

public void setGroup_id(Integer group_id) {
   this.group_id = group_id;
}

public List<AnotherObject2> getAnotherList() {
  return smsList;
}

public void setAnotherList(List<AnotherObject2> anotherList) {
   this.anotherList = anotherList;
}

}

class AnotherObject2{
  private String                    customid;

    private String                  customid1   ;

    private Long                    mobile;

    private String                  status;

    private String                  country;

    public String getCustomid() {
        return customid;
    }

    public void setCustomid(String customid) {
        this.customid = customid;
    }

    public String getCustomid1() {
        return customid1;
    }

    public void setCustomid1(String customid1) {
        this.customid1 = customid1;
    }

    public Long getMobile() {
        return mobile;
    }

    public void setMobile(Long mobile) {
        this.mobile = mobile;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public String getCountry() {
        return country;
    }

    public void setCountry(String country) {
        this.country = country;
    }


}

JSON 字符串:这是我的 json 字符串，我想通过它使用对象映射器创建一个 java 对象

String response="{\"status\":\"OK\",\"data\":{\"group_id\":39545922,\"0\":{\"id\":\"39545922-1\",\"customid\":\"\",\"customid1\":\"\",\"customid2\":\"\",\"mobile\":\"910123456789\",\"status\":\"XYZ\",\"country\":\"IN\"}},\"message\":\"WE R Happy.\"}"

ObjectMapper 代码//将字符串转换为响应对象

ObjectMapper objectMapper = new ObjectMapper();
objectMapper.configure(Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
objectMapper.readValue(responseBody, MyObject.class);

异常:这是异常

com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token
 at [Source: {"status":"OK","data":{"group_id":39545922,"0":{"id":"39545922-1","customid":"","customid1":"","customid2":"","mobile":"910123456789","status":"GOOD","country":"IN"}},"message":"We R happy."}; line: 1, column: 15] (through reference chain: MyObject["data"])
    at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:148)
    at com.fasterxml.jackson.databind.DeserializationContext.mappingException(DeserializationContext.java:854)
    at com.fasterxml.jackson.databind.DeserializationContext.mappingException(DeserializationContext.java:850)
    at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.handleNonArray(CollectionDeserializer.java:292)
    at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:227)
    at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:217)
    at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:25)
    at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:520)
    at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:95)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:256)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:125)
    at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3702)
    at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2714)
    at abc.disp(RestClientImpl.java:210)
    at abc.disp(RestClientImpl.java:105)
    at Application.<init>(Application.java:42)
    at Application.main(Application.java:45)

请指导我如何实现这一目标。

Answer 1

您的代码本身不可编译...

private List<AnotherObject1> data; // Your class member is list of AnotherObject1

下面它用作 getter 和 setter 中的 SMSDTO 列表

public List<SMSDTO> getData() {
    return data;
}