Java GAE数据存储未返回实体

我使用objectify查询了我设置的GAE数据存储，其中至少有一个实体，但我一直得到以下响应

200 OK

• 显示标题-

{

“种类”：“调用#resourcesItem”， “etag”：“AiR-q6YO1YYMgAaz-ZfT\u fl7oeY/pcKQAVaDylr\u ZSckRfQAxsphOUU”

}

下面是objectify请求的样子

@ApiMethod(name = "queryCalls", path = "queryCalls", httpMethod = HttpMethod.POST)

public List<Call> queryCalls()
{
    Query<Call> query = ofy().load().type(Call.class).order("name");
    return query.list();


}   

---

}

正如您在上一条评论中强调的那样，

@Entity

类必须具有无参数构造函数，以便Objectify能够从数据存储实体构造对象

---

排序后，您将能够使用类中定义的

@Index

ed属性对结果进行排序。

那么，您是说您的查询没有返回结果吗？您需要包括

Call

类的相关部分，以帮助其他人理解问题。是的，这就是我要说的，我现在将在编辑中包括Call类。我在

Call

类中看不到

name

属性。你的意思是

patientName

？我尝试添加了patientName，但它给了我一个503错误。你需要查看开发人员控制台中的web应用程序日志，以查看导致错误的原因。然后我如何在不添加arg构造函数的情况下重新创建调用类的构造函数呢？？？你可以有多个构造函数，但不需要arg-one，这是super-mate。非常感谢你。周末我一直在研究这个问题，但在任何地方都找不到答案，所以非常感谢

package com.cms.log;

import com.googlecode.objectify.annotation.Entity;
import com.googlecode.objectify.annotation.Id;
import com.googlecode.objectify.annotation.Index;



/* Patient Entity */
@Entity
public class Call {

@Id Long callId;
@Index String patientName;
@Index String doctor;
String address1;
String address2;
String address3;
String postCode;
String patientLocation;
@Index String symptoms;
Integer contactNumber;
@Index String callDateTime;
String currentStatus;



 public Call(Long callId, String patientName, String doctor, String address1,
        String address2, String address3, String postCode, String patientLocation, String symptoms,
        Integer contactNumber, String callDateTime, String currentStatus) 
{
    this.callId = callId;
    this.patientName = patientName;
    this.doctor = doctor;
    this.address1 = address1;
    this.address2 = address2;
    this.address3 = address3;
    this.postCode = postCode;
    this.patientLocation = patientLocation;
    this.symptoms = symptoms;
    this.contactNumber = contactNumber;
    this.callDateTime = callDateTime;
    this.currentStatus = currentStatus;
};

public Long getCallId() {
    return callId;
}

public void setCallId(Long Id) {
    this.callId = Id;
}

public String getPatientName() {
    return patientName;
}

public void setPatientName(String patientName) {
    this.patientName = patientName;
}

public String getDoctor() {
    return doctor;
}

public void setDoctor(String doctor) {
    this.doctor = doctor;
}

public String getAddress1() {
    return address1;
}

public void setAddress1(String address1) {
    this.address1 = address1;
}

public String getAddress2() {
    return address2;
}

public void setAddress2(String address2) {
    this.address2 = address2;
}

public String getAddress3() {
    return address3;
}

public void setAddress3(String address3) {
    this.address3 = address3;
}

public String getPostCode() {
    return postCode;
}

public void setPostCode(String postCode) {
    this.postCode = postCode;
}

public String getPatientLocation() {
    return patientLocation;
}

public void setPatientLocation(String patientLocation) {
    this.patientLocation = patientLocation;
}

public String getSymptoms() {
    return symptoms;
}

public void setSymptoms(String symptoms) {
    this.symptoms = symptoms;
}

public int getContactNumber() {
    return contactNumber;
}

public void setContactNumber(int contactNumber) {
    this.contactNumber = contactNumber;
}

public String getCallDateTime() {
    return callDateTime;
}

public void setCallDateTime(String callDateTime) {
    this.callDateTime = callDateTime;
}

public String getCurrentStatus() {
    return currentStatus;
}

public void setCurrentStatus(String currentStatus) {
    this.currentStatus = currentStatus;
}