[skip ci] Update http document for v0.9.0 (#2347) (#2348)

Signed-off-by: Nyhz <413554850@qq.com>

CHANGELOG.md

@@ -66,6 +66,7 @@ Please mark all change in change log and use the issue from GitHub
 -   \#2300 Upgrade mishrads configuration to version 0.4
 -   \#2311 Update mishards methods 
 -   \#2330 Change url for behavior 'get_entities_by_id'
+-   \#2347 Update http document for v0.9.0
 
 ## Task
 

core/src/server/web_impl/README.md

@@ -540,22 +540,23 @@ $ curl -X GET "http://127.0.0.1:19121/collections/test_collection?info=stat" -H
 
 ```json
 {
-  "count": 150000,
-  "partitions_stat": [
+  "partitions":[
     {
-      "count": 1000,
-      "partition_tag": "_default",
-      "segments_stat": [
+      "row_count":10000,
+      "segments":[
         {
-          "count": 1000,
-          "index": "FLAT",
-          "segment_name": "1583727170217439000",
-          "size": 5284922
+          "data_size":5284922,
+          "index_name":"IVFFLAT",
+          "name":"1589468453228582000",
+          "row_count":10000
         }
-      ]
+      ],
+      "tag":"_default"
     }
-  ]
+  ],
+  "row_count":10000
 }
+
 ```
 
 ### `/collections/{collection_name}` (DELETE)
@@ -935,7 +936,7 @@ Deletes a partition by tag.
 ##### Request
 
 ```shell
-$ curl -X DELETE "http://127.0.0.1:19121/collections/test_collection/partitions -H "accept: application/json" -d "{\"partition_tag\": \"tags_01\"}"
+$ curl -X DELETE "http://127.0.0.1:19121/collections/test_collection/partitions" -H "accept: application/json" -d "{\"partition_tag\": \"tags_01\"}"
 ```
 
 The deletion is successful if no information is returned.
@@ -981,16 +982,16 @@ $ curl -X GET "http://127.0.0.1:19121/collections/test_collection/segments?offse
 
 ```json
 {
-  "code": 0,
-  "message": "OK",
-  "count": 2,
-  "segments": [
+  "code":0,
+  "message":"OK",
+  "count":1,
+  "segments":[
     {
-      "count": 10000,
-      "index": "IVFFLAT",
-      "partition_tag": "_default",
-      "segment_name": "1583727470444700000",
-      "size": 5284922
+      "data_size":5284922,
+      "index_name":"IVFFLAT",
+      "name":"1589468453228582000",
+      "partition_tag":"_default",
+      "row_count":10000
     }
   ]
 }
@@ -1237,9 +1238,9 @@ Inserts vectors to a collection.
 <tr><td>Header </td><td><pre><code>accept: application/json</code></pre> </td></tr>
 <tr><td>Body</td><td><pre><code>
 {
-  "partition_tag": string,
+  "partition_tag": $string,
   "vectors": [[number($float/$uint8)]],
-  "ids": [integer($int64)]
+  "ids": [$string]
 }
 </code></pre> </td></tr>
 <tr><td>Method</td><td>POST</td></tr>
@@ -1290,9 +1291,9 @@ $ curl -X POST "http://127.0.0.1:19121/collections/test_collection/vectors" -H "
 }
 ```
 
-### `/collections/{collection_name}/vectors?id={vector_id}` (GET)
+### `/collections/{collection_name}/vectors?ids={vector_id_list}` (GET)
 
-Obtain a vector to by ID.
+Obtain vectors by ID.
 
 #### Request
 
@@ -1305,10 +1306,10 @@ Obtain a vector to by ID.
 
 #### Query Parameters
 
-| Parameter         | Description             | Required? |
-| ----------------- | ----------------------- | --------- |
-| `collection_name` | Name of the collection. | Yes       |
-| `vector_id`       | Vector id.              | Yes       |
+| Parameter         | Description                           | Required? |
+| ----------------- | ------------------------------------- | --------- |
+| `collection_name` | Name of the collection.               | Yes       |
+| `vector_id_list`  | Vector id list, separated by commas.  | Yes       |
 
 #### Response
 
@@ -1323,7 +1324,7 @@ Obtain a vector to by ID.
 ##### Request
 
 ```shell
-$ curl -X GET "http://127.0.0.1:19121/collections/test_collection/vectors?id=1578989029645098000" -H "accept: application/json" -H "Content-Type: application/json"
+$ curl -X GET "http://127.0.0.1:19121/collections/test_collection/vectors?ids=1578989029645098000,1578989029645098001" -H "accept: application/json" -H "Content-Type: application/json"
 ```
 
 ##### Response
@@ -1334,6 +1335,10 @@ $ curl -X GET "http://127.0.0.1:19121/collections/test_collection/vectors?id=157
     {
       "id": "1578989029645098000",
       "vector": [0.1]
+    },
+    {
+      "id": "1578989029645098001",
+      "vector": [0.2]
     }
   ]
 }