Solr - 如何索引多个实体？

 <field name="id" type="string" indexed="true" stored="true" required="true" multiValued="false" />
 <field name="name" type="string" indexed="true" stored="true" />
 <field name="age" type="int" indexed="true" stored="true" />
 <field name="address" type="string" indexed="true" stored="true" />
</fields>

[
  {
    "id": "1",
    "name": "John Doe",
    "age": 30,
    "address": "123 Main St"
  },
  {
    "id": "2",
    "name": "Jane Smith",
    "age": 25,
    "address": "456 Elm St"
  }
]

POST /solr/collection1/update HTTP/1.1
Content-Type: application/json

[
  {
    "id": "1",
    "name": "John Doe",
    "age": 30,
    "address": "123 Main St"
  },
  {
    "id": "2",
    "name": "Jane Smith",
    "age": 25,
    "address": "456 Elm St"
  }
]

POST /solr/collection1/update HTTP/1.1
Content-Type: application/json

{"commit":{}}

GET /solr/collection1/select?q=*:*&fl=id,name,age,address HTTP/1.1