要使用 DynamoDBLocal，您需要执行以下步骤。
- 获取直接 DynamoDB 本地依赖关系
- 获取原生 SQLite4Java 依赖项
- 设置为显示本机库
sqlite4java.library.path
1. 获取直接 DynamoDB 本地依赖项
这个很简单。您需要此存储库，如此处所述。
<!--Dependency:-->
<dependencies>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>DynamoDBLocal</artifactId>
<version>1.11.0.1</version>
<scope></scope>
</dependency>
</dependencies>
<!--Custom repository:-->
<repositories>
<repository>
<id>dynamodb-local</id>
<name>DynamoDB Local Release Repository</name>
<url>https://s3-us-west-2.amazonaws.com/dynamodb-local/release</url>
</repository>
</repositories>
2. 获取原生 SQLite4Java 依赖项
如果不添加这些依赖项，测试将失败，并显示 500 内部错误。
首先，添加以下依赖项：
<dependency>
<groupId>com.almworks.sqlite4java</groupId>
<artifactId>sqlite4java</artifactId>
<version>1.0.392</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.almworks.sqlite4java</groupId>
<artifactId>sqlite4java-win32-x86</artifactId>
<version>1.0.392</version>
<type>dll</type>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.almworks.sqlite4java</groupId>
<artifactId>sqlite4java-win32-x64</artifactId>
<version>1.0.392</version>
<type>dll</type>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.almworks.sqlite4java</groupId>
<artifactId>libsqlite4java-osx</artifactId>
<version>1.0.392</version>
<type>dylib</type>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.almworks.sqlite4java</groupId>
<artifactId>libsqlite4java-linux-i386</artifactId>
<version>1.0.392</version>
<type>so</type>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.almworks.sqlite4java</groupId>
<artifactId>libsqlite4java-linux-amd64</artifactId>
<version>1.0.392</version>
<type>so</type>
<scope>test</scope>
</dependency>
然后，添加此插件以将本机依赖项获取到特定文件夹：
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.10</version>
<executions>
<execution>
<id>copy</id>
<phase>test-compile</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<includeScope>test</includeScope>
<includeTypes>so,dll,dylib</includeTypes>
<outputDirectory>${project.basedir}/native-libs</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
3. 设置 sqlite4java.library.path 以显示本机库
作为最后一步，您需要将系统属性设置为本机库目录。在创建本地服务器之前执行此操作是可以的。sqlite4java.library.path
System.setProperty("sqlite4java.library.path", "native-libs");
完成这些步骤后，您可以根据需要使用 DynamoDBLocal。下面是一个 Junit 规则，用于为此创建本地服务器。
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDB;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient;
import com.amazonaws.services.dynamodbv2.local.main.ServerRunner;
import com.amazonaws.services.dynamodbv2.local.server.DynamoDBProxyServer;
import org.junit.rules.ExternalResource;
import java.io.IOException;
import java.net.ServerSocket;
/**
* Creates a local DynamoDB instance for testing.
*/
public class LocalDynamoDBCreationRule extends ExternalResource {
private DynamoDBProxyServer server;
private AmazonDynamoDB amazonDynamoDB;
public LocalDynamoDBCreationRule() {
// This one should be copied during test-compile time. If project's basedir does not contains a folder
// named 'native-libs' please try '$ mvn clean install' from command line first
System.setProperty("sqlite4java.library.path", "native-libs");
}
@Override
protected void before() throws Throwable {
try {
final String port = getAvailablePort();
this.server = ServerRunner.createServerFromCommandLineArgs(new String[]{"-inMemory", "-port", port});
server.start();
amazonDynamoDB = new AmazonDynamoDBClient(new BasicAWSCredentials("access", "secret"));
amazonDynamoDB.setEndpoint("http://localhost:" + port);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
protected void after() {
if (server == null) {
return;
}
try {
server.stop();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public AmazonDynamoDB getAmazonDynamoDB() {
return amazonDynamoDB;
}
private String getAvailablePort() {
try (final ServerSocket serverSocket = new ServerSocket(0)) {
return String.valueOf(serverSocket.getLocalPort());
} catch (IOException e) {
throw new RuntimeException("Available port was not found", e);
}
}
}
您可以像这样使用此规则
@RunWith(JUnit4.class)
public class UserDAOImplTest {
@ClassRule
public static final LocalDynamoDBCreationRule dynamoDB = new LocalDynamoDBCreationRule();
}
