Как отправить вложения в ServiceNow с помощью Camel?

To upload or download attachments to ServiceNow using Camel, you can use the camel-servicenow component along with Apache Camel framework in your Maven project. Here is a general guide on how to achieve this:

1. Add camel-servicenow dependency to your Maven project:
```xml
<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-servicenow-starter</artifactId>
    <version>2.22.0</version>
</dependency>
```

2. Use ServiceNowAttachmentResourceUriBuilder to build the attachment URL for the specific record and attachment ID:
```java
ServiceNowAttachmentResourceUriBuilder uriBuilder = new ServiceNowAttachmentResourceUriBuilder();
String attachmentUrl = uriBuilder.resolveAttachmentLink(instanceUrl, table, recordId, attachmentId);
```

3. Use camel-http component to download or upload the attachments:
```java
from("direct:downloadAttachment")
    .setHeader(Exchange.HTTP_METHOD, constant("GET"))
    .toD(attachmentUrl)
    .to("file://downloadLocation");

from("direct:uploadAttachment")
    .setHeader(Exchange.HTTP_METHOD, constant("POST"))
    .setHeader(Exchange.HTTP_QUERY, constant("sysparm_table=" + table + "&sysparm_record_id=" + recordId))
    .setHeader("Accept", constant("application/json"))
    .setHeader(Exchange.CONTENT_TYPE, constant("application/octet-stream"))
    .setBody(body().convertTo(InputStream.class))
    .toD(attachmentUrl);
```

4. Configure the ServiceNow component in your Camel route to authenticate and authorize access to ServiceNow:
```java
ServiceNowConfiguration configuration = new ServiceNowConfiguration();
configuration.setInstanceUrl(instanceUrl);
configuration.setUserName(username);
configuration.setPassword(password);

ServiceNowComponent component = new ServiceNowComponent();
component.setConfiguration(configuration);

CamelContext context = new DefaultCamelContext();
context.addComponent("servicenow", component);

ProducerTemplate template = context.createProducerTemplate();
```

5. Invoke the Camel route to download or upload attachments using ProducerTemplate:
```java
// Download attachment
template.sendBody("direct:downloadAttachment", null);

// Upload attachment
File file = new File("attachment.txt");
InputStream inputStream = new FileInputStream(file);
template.sendBody("direct:uploadAttachment", inputStream);
```

By following these steps, you should be able to successfully download or upload attachments to ServiceNow using Camel in your Maven project. Make sure to adjust the configuration settings and route logic according to your specific requirements and ServiceNow instance setup.