Java Swift Examples¶

配置¶

The following examples may require some or all of the following Java classes to be imported:

import org.javaswift.joss.client.factory.AccountConfig;
import org.javaswift.joss.client.factory.AccountFactory;
import org.javaswift.joss.client.factory.AuthenticationMethod;
import org.javaswift.joss.model.Account;
import org.javaswift.joss.model.Container;
import org.javaswift.joss.model.StoredObject;
import java.io.File;
import java.io.IOException;
import java.util.*;

建立一个连接¶

This creates a connection so that you can interact with the server:

String username = "USERNAME";
String password = "PASSWORD";
String authUrl  = "https://radosgw.endpoint/auth/1.0";

AccountConfig config = new AccountConfig();
config.setUsername(username);
config.setPassword(password);
config.setAuthUrl(authUrl);
config.setAuthenticationMethod(AuthenticationMethod.BASIC);
Account account = new AccountFactory(config).createAccount();

创建一个容器¶

This creates a new container called my-new-container:

Container container = account.getContainer("my-new-container");
container.create();

Create an Object¶

This creates an object foo.txt from the file named foo.txt in the container my-new-container:

Container container = account.getContainer("my-new-container");
StoredObject object = container.getObject("foo.txt");
object.uploadObject(new File("foo.txt"));

Add/Update Object Metadata¶

This adds the metadata key-value pair key:value to the object named foo.txt in the container my-new-container:

Container container = account.getContainer("my-new-container");
StoredObject object = container.getObject("foo.txt");
Map<String, Object> metadata = new TreeMap<String, Object>();
metadata.put("key", "value");
object.setMetadata(metadata);

List Owned Containers¶

This gets a list of Containers that you own. This also prints out the container name.

Collection<Container> containers = account.list();
for (Container currentContainer : containers) {
    System.out.println(currentContainer.getName());
}

The output will look something like this:

mahbuckat1
mahbuckat2
mahbuckat3

List a Container’s Content¶

This gets a list of objects in the container my-new-container; and, it also prints out each object’s name, the file size, and last modified date:

Container container = account.getContainer("my-new-container");
Collection<StoredObject> objects = container.list();
for (StoredObject currentObject : objects) {
    System.out.println(currentObject.getName());
}

The output will look something like this:

myphoto1.jpg
myphoto2.jpg

Retrieve an Object’s Metadata¶

This retrieves metadata and gets the MIME type for an object named foo.txt in a container named my-new-container:

Container container = account.getContainer("my-new-container");
StoredObject object = container.getObject("foo.txt");
Map<String, Object> returnedMetadata = object.getMetadata();
for (String name : returnedMetadata.keySet()) {
    System.out.println("META / "+name+": "+returnedMetadata.get(name));
}

Retrieve an Object¶

This downloads the object foo.txt in the container my-new-container and saves it in ./outfile.txt:

Container container = account.getContainer("my-new-container");
StoredObject object = container.getObject("foo.txt");
object.downloadObject(new File("outfile.txt"));

Delete an Object¶

This deletes the object goodbye.txt in the container “my-new-container”:

Container container = account.getContainer("my-new-container");
StoredObject object = container.getObject("foo.txt");
object.delete();

Delete a Container¶

This deletes a container named “my-new-container”:

Container container = account.getContainer("my-new-container");
container.delete();

Note

The container must be empty! Otherwise it won’t work!