我正在使用Jersey
框架并试图返回{"status":201}
作为响应,但我得到{"status":201,"route":0}
在momenat。我在另一个回复中需要SDBeanPost
课程中的路线和方向,但不是全部回复。因此,我可以通过添加此行来删除响应方向bean.direction = null;
,但是我不知道如何从中删除route
?从JSON响应中删除密钥
Receiver类
package org.busTracker.trackingService;
/*
* Inside this class, the request from the Android application - PostData class is received.
* Consequently, a response is sent back.
*/
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
@Path("/data")
public class Receiver {
static String flagD;
@POST
@Consumes(MediaType.APPLICATION_JSON)
public Response proccessData(Data data) {
Database db = new Database();
String macD = data.getMac();
int routeD = data.getRoute();
double latD = data.getLatitude();
double longD = data.getLongitude();
String timeD = data.getTime();
int speedD = data.getSpeed();
String directionD = data.getDirection();
flagD = data.getFlag();
// Jackson class to wrapper the data as JSON string.
SDBeanPost bean = new SDBeanPost();
bean.direction = null;
bean.status = 201;
return Response.status(bean.status).entity(bean.toJson()).build();
}
}
SDBeanPost
package org.busTracker.trackingService;
/*
* Class to wrap the response for the Receiver class.
*/
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
//To return status without route null.
@JsonInclude(JsonInclude.Include.NON_NULL)
public class SDBeanPost {
public int status;
public int route;
public String direction;
public SDBeanPost() {
Receiver receiver = new Receiver();
direction = "";
status = 230;
}
public String toJson() {
ObjectMapper mapper = new ObjectMapper();
String json = null;
try {
json = mapper.writeValueAsString(this);
} catch (JsonProcessingException e) {
e.printStackTrace();
}
return json;
}
}
为什么你返回一个SDBeanPost的实例,它有一个状态,一个路线和一个方向,因为你实际上只想返回一个状态?使用不同的班级,其中有你想要的字段,只有那些字段。另外,请勿自行序列化为JSON。泽西为你做到了这一点。在身体中返回身份也是可疑的,顺便说一句。 HTTP响应已经具有状态。所以,除非身体状态是一种完全不同的状态,否则它不应该在身体中。 –