@Controllerpublic class StudentRegistrationController {@RequestMapping(method = RequestMethod.POST, value="/register/reg")@ResponseBodyStudentRegistrationReply registerStudent(@RequestBody Student student) { System.out.println("In registerStudent"); StudentRegistrationReply stdregreply = new StudentRegistrationReply(); StudentRegistration.getInstance().add(student); //We are setting the below value just to reply a message back to the caller stdregreply.setId(student.getId()); stdregreply.setName(student.getName()); stdregreply.setAge(student.getAge()); stdregreply.setRegistrationNumber(student.getRegistrationNumber()); stdregreply.setPayment_detailsList(student.getPayment_detailsList()); stdregreply.setRegistrationStatus("Successful"); daocontroller.setStudentRegistration(stdregreply); return stdregreply;}}試圖將郵遞員請求映射到但為空json就像{ "id": 300, "name": "kukri", "age": 26, "registrationNumber": "54326", "Student_payment_details": { "pay": 50000, "date": "23061994", "phcounter": "SKB" }}Java 類public class Student { private int id; private String name; private int age; private String registrationNumber; private Student_payment_details payment_detailsList; //getter and setter}
1 回答
蕭十郎
TA貢獻1815條經驗 獲得超13個贊
使用 Lombok 作為我的 getter/setter，您可以忽略它并編寫自己的 getter/setter
您的請求正文存在問題，您應該將 json 中的密鑰作為 java 變量名傳遞，您正在傳遞
Student_payment_details而不是payment_detailsListGetters 和 Setters 應該與你的變量名有關。
請求網址：
curl -X POST \
http://localhost:8080/register/reg \
-H 'Content-Type: application/json' \
-H 'cache-control: no-cache' \
-d '{
"id": 300,
"name": "kukri",
"age": 26,
"registrationNumber": "54326",
"payment_detailsList": {
"pay": 50000,
"date": "23061994",
"phcounter": "SKB"
}
}'
Java Dtos：
import lombok.Data;
@Data
public class Student_payment_details {
int pay;
String date;
String phcounter;
}
import lombok.Data;
@Data
public class Student {
private int id;
private String name;
private int age;
private String registrationNumber;
private Student_payment_details payment_detailsList; //getter and setter
}
下圖顯示了控制器內填充的學生變量的內容
注意：我不知道您的用例，但作為一般建議，請遵循 1 種命名約定，snake_case或camelCase.
在 java 中主要使用的是camelCase.
變量的命名也應該與類類型相似，
這里變量 payment_detailsList 的類型Student_payment_details會導致混淆，如果您希望 JSON 變量名稱不同，則可以使用 as
@JsonProperty("payment_detailsList")
private Student_payment_details student_payment_details;
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