如何更新 Spring-data rest 中的引用对象?

2022-01-18 00:00:00 rest spring java spring-data spring-data-rest

示例: class Course 和 Teacher 多对一关系，如何通过 Spring-data rest 为某门课程更换教师?

Example: class Course and Teacher having many-to-one relationship, how to change teacher for a certain course via Spring-data rest?

GET http://localhost:7070/study-spring-data/course/2

回复:

{
  "name" : "CSCI-338 Hardcore Java",
  "_links" : [ {
    "rel" : "course.Course.teacher",
    "href" : "http://localhost:7070/study-spring-data/course/2/teacher"
  }, {
    "rel" : "self",
    "href" : "http://localhost:7070/study-spring-data/course/2"
  } ]
}

GET http://localhost:7070/study-spring-data/course/2/teacher

回复:

{
  "_links" : [ {
    "rel" : "course.Course.teacher",
    "href" : "http://localhost:7070/study-spring-data/course/2/teacher/1"
  } ]
}

如上图，课程2与教师1关联，如何将教师更改为教师2?

As above shown, course 2 is associated with teacher 1, how to change teacher to teacher 2?

我试过了:

课程名称更新成功:

PUT http://localhost:7070/study-spring-data/course/2带有效载荷

    {
      "name" : "CSCI-223 Hardcore C++",
    }

不成功尝试更新参考对象教师时:

unsuccessful when try to update reference object teacher:

PUT http://localhost:7070/study-spring-data/course/2/teacher

有负载

    {
      "_links" : [ {
        "rel" : "course.Course.teacher",
        "href" : "http://localhost:7070/study-spring-data/course/2/teacher/2"
      } ]
    }

谢谢！

推荐答案

这样的事情怎么样:

curl -v -X PUT -H "Content-Type: text/uri-list" 
     -d "http://localhost:7070/study-spring-data/teacher/1" 
     http://localhost:7070/study-spring-data/course/123/teacher

这是 O'Reilly 的 Spring Data book 建议的一种方式.

This is a way suggested by O'Reilly's Spring Data book.

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