获取会签后的文件
## 获取会签后的文件
>会签关闭后，调用此接口，得到会签后的文件地址
###### 接口地址
> 地址：http://open.wellsign.cn/sdk/parasign/v2/writeObjects2PDF
###### 请求方式
> POST
###### 请求参数
|参数|必选|类型|说明|
|-|-|-|-|
|sequenceId |必填|string|唯一对应着文件，是签字链接的sequenceId|
|token|必填|string|授权token|
###### 返回参数
|返回参数|说明|
|-|-|
|downUrl|PDF下载地址|
###### 返回成功
``` javascript
{
"succeed": 0,
"msg": null,
"data": {
"downUrl": "https://wellsign-test.oss-cn-hangzhou.aliyuncs.com/1LVZGVU89K32XOL9/JT6YVSaj2o/tempFile/VhVZYT3ES1/RFqZb.pdf"
}
}
```
###### 返回失败
``` javascript
{
"succeed": 1972,
"msg": {
"en": "The signature has not been closed yet. The document after signature can not be obtained. Please close the signature first.",
"cn": "会签还未关闭，无法获取签批后的文件，请先关闭会签"
},
"data": null
}
```