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Add resource searching sample description #17615

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Nov 19, 2020
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Add resource searching sample description #17615

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Add resource searching sample description
Nov 17, 2020
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Combine the sample code and comment in java code block
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Add Multipart upload section
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17 changes: 17 additions & 0 deletions sdk/spring/azure-spring-boot-starter-storage/README.md
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Expand Up @@ -72,6 +72,21 @@ private final BlobServiceAsyncClient blobServiceAsyncClient = blobServiceClientB

```

#### Search for resources
You can use implementation class `AzureStorageResourcePatternResolver` of `ResourcePatternResolver` to search resource, it supports `blob` or `file` type.
* Create pattern resolver object, if only one storage type resource used, please call the corresponding constructor.
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* Pattern search, the **searchPattern** should start with `azure-blob://` or `azure-file://`. Such as `azure-blob://*/*`, it means list all blobs in all containers; `azure-blob://demo-container/**`, it means list all blobs in the demo-container container, including any sub-folder.
* Location search, the **searchLocation** should start with `azure-blob://` or `azure-file://`, the remaining file path should exist, otherwise an exception will be thrown.

```java
AzureStorageResourcePatternResolver storageResourcePatternResolver = new AzureStorageResourcePatternResolver(blobServiceClientBuilder.buildClient());
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Resource[] resources = storageResourcePatternResolver.getResources(searchPattern);
Resource resource = storageResourcePatternResolver.getResource(searchLocation);
```

#### Multipart upload
Files larger than 4 MiB will be uploaded to Azure Storage in parallel. Learn more at [Upload in parallel][storage-blob-scalable-app-upload-files].
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## Troubleshooting
### Enable client logging
Azure SDKs for Java offers a consistent logging story to help aid in troubleshooting application errors and expedite their resolution. The logs produced will capture the flow of an application before reaching the terminal state to help locate the root issue. View the [logging][logging] wiki for guidance about enabling logging.
Expand Down Expand Up @@ -115,3 +130,5 @@ Please follow [instructions here][contributing_md] to build from source or contr
[other_operation]: https://docs.spring.io/spring/docs/current/spring-framework-reference/core.html#resources
[jdk_link]: https://docs.microsoft.com/java/azure/jdk/?view=azure-java-stable

[storage-blob-scalable-app-upload-files]: https://docs.microsoft.com/azure/storage/blobs/storage-blob-scalable-app-upload-files