> For the complete documentation index, see [llms.txt](https://polyv.gitbook.io/document/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://polyv.gitbook.io/document/docs/live/api/channel/operate/get_transmit_associations.md).

# 查询转播频道信息

### 接口描述

```
1、查询账号或频道下的转播列表信息
2、接口支持https协议
```

### 接口URL

```
http://api.polyv.net/live/v3/channel/transmit/get-associations
```

[在线API调用](https://git.polyv.net/help-center/document-center/-/blob/master/req.html?api=http:/api.polyv.net/live/v3/channel/transmit/get-associations/README.md)

### 请求方式

```
GET
```

### 接口约束

1、接口同时支持HTTP 、HTTPS ，建议使用HTTPS 确保接口安全，接口调用有频率限制，[详细请查看](https://git.polyv.net/help-center/document-center/-/blob/master/live/api/limit/README.md)

### 请求参数描述

| 参数名       | 必选    | 类型     | 说明                                                                                                                                                                                                        |
| --------- | ----- | ------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| appId     | true  | String | 账号appId【详见[获取密钥](https://git.polyv.net/help-center/document-center/-/blob/master/live/api/getSecretKey/README.md)】                                                                                        |
| timestamp | true  | Long   | 当前13位毫秒级时间戳，3分钟内有效                                                                                                                                                                                        |
| sign      | true  | String | 签名，为32位大写的MD5值,`生成签名的appSecret密钥作为通信数据安全的关键信息，严禁保存在客户端直接使用，所有API都必须通过客户自己服务器中转调用POLYV服务器获取响应数据`【详见[签名生成规则](https://git.polyv.net/help-center/document-center/-/blob/master/live/api/buildSign/README.md)】 |
| channelId | false | String | 发起转播频道号，如果不传，则查询appId对应的账号下所有转播频道关联关系                                                                                                                                                                     |

### 示例

```requestUrl
https://api.polyv.net/live/v3/channel/transmit/get-associations?appId=frlr1zazn3&sign=37A6FD50B2FEEC94A779A77E26E5AF25&timestamp=1621843161944
```

### 响应参数描述

| 参数名     | 类型      | 说明                                                                                                                                                                   |
| ------- | ------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| code    | Integer | 响应状态码，200为成功返回，非200为失败【详见[全局错误说明](https://git.polyv.net/help-center/document-center/-/blob/master/live/api/errorInfo/README.md)】                                     |
| status  | String  | 响应状态文本信息                                                                                                                                                             |
| message | String  | 响应描述信息，当code为400或者500的时候，辅助描述错误原因                                                                                                                                    |
| data    | Array   | 响应成功时返回账号下频道的转播列表信息数组【详见[data字段说明](https://git.polyv.net/help-center/document-center/-/blob/master/live/api/channel/operate/get_transmit_associations.md?id=polyv1)】 |

**Data参数描述**

| 参数名              | 类型     | 说明                                 |
| ---------------- | ------ | ---------------------------------- |
| channelId        | String | 发起转播频道号，如果一个接收转播频道没有关联主频道，则该值为null |
| receiveChannelId | String | 接收转播频道号                            |

### Java请求示例

快速接入基础代码请下载相关依赖源码， [点击下载源代码](https://git.polyv.net/help-center/document-center/-/blob/master/third_res/util.zip) ,下载后加入到自己的源码工程中即可。测试用例中的**HttpUtil.java 和 LiveSignUtil.java** 都包含在下载文件中。

> 强烈建议您使用[直播Java SDK](https://git.polyv.net/help-center/document-center/-/blob/master/live/java/README.md)完成API的功能对接，直播Java SDK 对API调用逻辑、异常处理、数据签名、HTTP请求线程池进行了统一封装和优化。

```java
private static final Logger log = LoggerFactory.getLogger(ChannelOperateTest.class);
/**
 * 查询转播频道信息
 * @throws IOException
 * @throws NoSuchAlgorithmException
 */
@Test
public void testGetTransmitAssociations() throws IOException, NoSuchAlgorithmException {
    //公共参数,填写自己的实际
    String appId = super.appId;
    String appSecret = super.appSecret;
    String userId = super.userId;
    String timestamp = String.valueOf(System.currentTimeMillis());
    //业务参数
    String url="https://api.polyv.net/live/v3/channel/transmit/get-associations";
    String channelId="2191569";

    //http 调用逻辑
    Map<String, String> requestMap = new HashMap<>();
    requestMap.put("appId", appId);
    requestMap.put("timestamp", timestamp);
    requestMap.put("sign", LiveSignUtil.getSign(requestMap, appSecret));
    String response = HttpUtil.get(url, requestMap);
    log.info("测试查询转播频道信息，返回值：{}", response);
    //do somethings

}
```

### 响应示例

系统全局错误说明详见[全局错误说明](https://git.polyv.net/help-center/document-center/-/blob/master/live/api/errorInfo/README.md)

成功示例

```json
{
    "code":200,
    "status":"success",
    "message":"",
    "data":[
        {
            "channelId":null,
            "receiveChannelId":2191541
        },
        {
            "channelId":null,
            "receiveChannelId":2191532
        },
        {
            "channelId":null,
            "receiveChannelId":1972965
        }
    ]
}
```

异常示例

```json
{
    "code": 400,
    "status": "error",
    "message": "invalid signature.",
    "data": ""
}
```


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