如何通过REST获取Sakai中的作业内容

时间：2014-05-22 10:21:06

标签： java rest sakai

在Sakai，我通过网址成功获得了Assignemnt：http://xxx/direct/assignment/ASSIGNMENTID.xml。但是，在这个实体中，没有详细的背景（我的意思是，老师的任务指导）。 XML中只有一个内容contentReference元素。 

<contentReference>/assignment/c/mercury/b0de53c7-09b6-4ba0-964b-cb0a9e5a028d</contentReference>

当我按照这个链接时，我得到404错误：

尝试访问不存在的实体（/ assignment / c）的实体URL路径（/ assignment / c / mercury / b0de53c7-09b6-4ba0-964b-cb0a9e5a028d）

我在Sakai实体上尝试了Google for API文档，但事实证明它已经过时了（我的Sakai 2.9.3的演示版本有些网址错误）。然后我尝试深入挖掘Sakai的源代码。但是，我发现只有rsmart服务器上的文件：

我发现：

        throw new IllegalArgumentException(
                "Must include context and assignmentId in the path ("
                        + view
                        + "): e.g. /assignment/a/{context}/{assignmentId}");

我尝试在我的服务器上使用此URL来获取详细内容（尤其是教师的指示）。还有另外一个404错误与上面相同的内容。

最后，我发现/assignment/a/可能是/assignment/annc/{context}/{assignmentId}的错误拼写。所以现在我发了：

http://localhost:8080/direct/assignment/annc/mercury/403d28b4-e152-463d-a615-972db97d34d3.xml

弹出另一个错误：

HTTP状态500 - EntityEncodingException：无法处理此路径的格式xml的输出请求（/assignment/annc/mercury/403d28b4-e152-463d-a615-972db97d34d3.xml）以获取实体的前缀（赋值）（/ assignment） / annc），请求url（/assignment/annc/mercury/403d28b4-e152-463d-a615-972db97d34d3.xml）：实体的内部输出编码失败：/ assignment / annc

关于通过RESTful获取教师指导数据的网址的任何想法？ THX。

作业的XML数据。 

<assignment type='bean' size='29'>
  <access type='bean' size='0'>
  </access>
  <attachments type='collection' size='1'>
    <decoratedattachment type='bean' size='2'>
      <name>LC Circuit (show name).png</name>
      <url>http://localhost:8080/access/content/attachment/mercury/%E4%BD%9C%E4%B8%9A/a11ef34a-0578-433a-ba7e-9c3bad948bf5/1111.png</url>
    </decoratedattachment>
  </attachments>
  <authorLastModified>admin</authorLastModified>
  <authors type='collection' size='0'>
  </authors>
  <closeTime type='bean' size='2'>
    <display>2014-9-12 下午5:00</display>
    <time type='number'>1410512400000</time>
  </closeTime>
  <closeTimeString>2014-9-12 下午5:00</closeTimeString>
  <content/>
  <contentReference>/assignment/c/mercury/b0de53c7-09b6-4ba0-964b-cb0a9e5a028d</contentReference>
  <context>mercury</context>
  <creator>admin</creator>
  <dropDeadTime type='bean' size='2'>
    <display>2014-8-12 下午5:00</display>
    <time type='number'>1407834000000</time>
  </dropDeadTime>
  <dropDeadTimeString>2014-8-12 下午5:00</dropDeadTimeString>
  <dueTime type='bean' size='2'>
    <display>2014-8-12 下午5:00</display>
    <time type='number'>1407834000000</time>
  </dueTime>
  <dueTimeString>2014-8-12 下午5:00</dueTimeString>
  <groups type='collection' size='0'>
  </groups>
  <id>403d28b4-e152-463d-a615-972db97d34d3</id>
  <openTime type='bean' size='2'>
    <display>2014-5-5 下午12:00</display>
    <time type='number'>1399262400000</time>
  </openTime>
  <openTimeString>2014-5-5 下午12:00</openTimeString>
  <position_order type='number'>0</position_order>
  <section></section>
  <status>开始</status>
  <timeCreated type='bean' size='2'>
    <display>2014-5-5 上午11:33</display>
    <time type='number'>1399260782158</time>
  </timeCreated>
  <timeLastModified type='bean' size='2'>
    <display>2014-5-6 上午8:46</display>
    <time type='number'>1399337194163</time>
  </timeLastModified>
  <title>A test assign</title>
  <draft type='boolean'>false</draft>
  <entityReference>/assignment/403d28b4-e152-463d-a615-972db97d34d3</entityReference>
  <entityURL>http://localhost:8080/direct/assignment/403d28b4-e152-463d-a615-972db97d34d3</entityURL>
  <entityId>403d28b4-e152-463d-a615-972db97d34d3</entityId>
  <entityTitle>A test assign</entityTitle>
</assignment>

1 个答案:

答案 0 :(得分：8)

注意：此答案适用于Sakai 10.如果您使用的是旧版本，则需要手动添加一些在项目Keitai（https://jira.sakaiproject.org/browse/SAK-23358）中添加的新功能。< / p>

使用Sakai 10.x夜间服务器：

http://nightly2.sakaiproject.org:8081/portal

具有以下ID的网站：

61a1ebbd-e507-4ca3-8f88-65abca0803d9

此URL将获取课程中作业的列表：

http://nightly2.sakaiproject.org:8081/direct/assignment/site/61a1ebbd-e507-4ca3-8f88-65abca0803d9.json

（返回JSON，如下所示）

{"entityPrefix": "assignment", "assignment_collection": [
{
  "access": {
  },
  "attachments": [],
  "authorLastModified": "admin",
  "authors": [],
  "closeTime": {
    "display": "Jun 11, 2014 5:00 pm",
    "time": 1402520400000
  },
  "closeTimeString": "Jun 11, 2014 5:00 pm",
  "content": null,
  "contentReference": "\/assignment\/c\/61a1ebbd-e507-4ca3-8f88-65abca0803d9\/1fd9f025-2974-48d1-bcb5-ef47c4e89a30",
  "context": "61a1ebbd-e507-4ca3-8f88-65abca0803d9",
  "creator": "admin",
  "dropDeadTime": {
    "display": "Jun 11, 2014 5:00 pm",
    "time": 1402520400000
  },
  "dropDeadTimeString": "Jun 11, 2014 5:00 pm",
  "dueTime": {
    "display": "Jun 11, 2014 5:00 pm",
    "time": 1402520400000
  },
  "dueTimeString": "Jun 11, 2014 5:00 pm",
  "groups": [],
  "id": "8d96871c-8dcb-4963-b74a-f478dee53142",
  "instructions": "<p>This is an assignment<\/p>",
  "openTime": {
    "display": "Jun 4, 2014 12:00 pm",
    "time": 1401897600000
  },
  "openTimeString": "Jun 4, 2014 12:00 pm",
  "position_order": 0,
  "section": "",
  "status": "Open",
  "timeCreated": {
    "display": "Jun 4, 2014 11:30 pm",
    "time": 1401939011264
  },
  "timeLastModified": {
    "display": "Jun 4, 2014 11:30 pm",
    "time": 1401939011286
  },
  "title": "AZ assignment",
  "draft": false,
  "entityReference": "\/assignment\/8d96871c-8dcb-4963-b74a-f478dee53142",
  "entityURL": "http:\/\/nightly2.sakaiproject.org:8081\/direct\/assignment\/8d96871c-8dcb-4963-b74a-f478dee53142",
  "entityId": "8d96871c-8dcb-4963-b74a-f478dee53142",
  "entityTitle": "AZ assignment"
}
]}

从那里你可以在列表中找到一个赋值的id（也可以通过其他方式），然后像这样返回单个赋值的数据：

http://nightly2.sakaiproject.org:8081/direct/assignment/item/8d96871c-8dcb-4963-b74a-f478dee53142.json

（返回JSON，如下所示）

{
  "access": {
  },
  "attachments": [],
  "authorLastModified": "admin",
  "authors": [],
  "closeTime": {
    "display": "Jun 11, 2014 5:00 pm",
    "time": 1402520400000
  },
  "closeTimeString": "Jun 11, 2014 5:00 pm",
  "content": null,
  "contentReference": "\/assignment\/c\/61a1ebbd-e507-4ca3-8f88-65abca0803d9\/1fd9f025-2974-48d1-bcb5-ef47c4e89a30",
  "context": "61a1ebbd-e507-4ca3-8f88-65abca0803d9",
  "creator": "admin",
  "dropDeadTime": {
    "display": "Jun 11, 2014 5:00 pm",
    "time": 1402520400000
  },
  "dropDeadTimeString": "Jun 11, 2014 5:00 pm",
  "dueTime": {
    "display": "Jun 11, 2014 5:00 pm",
    "time": 1402520400000
  },
  "dueTimeString": "Jun 11, 2014 5:00 pm",
  "groups": [],
  "id": "8d96871c-8dcb-4963-b74a-f478dee53142",
  "instructions": "<p>This is an assignment<\/p>",
  "openTime": {
    "display": "Jun 4, 2014 12:00 pm",
    "time": 1401897600000
  },
  "openTimeString": "Jun 4, 2014 12:00 pm",
  "position_order": 0,
  "section": "",
  "status": "Open",
  "timeCreated": {
    "display": "Jun 4, 2014 11:30 pm",
    "time": 1401939011264
  },
  "timeLastModified": {
    "display": "Jun 4, 2014 11:30 pm",
    "time": 1401939011286
  },
  "title": "AZ assignment",
  "draft": false,
  "entityReference": "\/assignment\/8d96871c-8dcb-4963-b74a-f478dee53142",
  "entityURL": "http:\/\/nightly2.sakaiproject.org:8081\/direct\/assignment\/8d96871c-8dcb-4963-b74a-f478dee53142",
  "entityId": "8d96871c-8dcb-4963-b74a-f478dee53142",
  "entityTitle": "AZ assignment"
}
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