使用此代码设置类路径

AWSCredentialsProvider credentialsProvider = new ClasspathPropertiesFileCredentialsProvider();
ec2 = new AmazonEC2Client(credentialsProvider);

以下是AwsCredentials.properties文件的格式

# Fill in your AWS Access Key ID and Secret Access Key
# http://aws.amazon.com/security-credentials
accessKey = keyHere
secretKey = secretKeyHere

以下是我得到的例外

Exception in thread "main" com.amazonaws.AmazonClientException: Unable to load AWS credentials from the /AwsCredentials.properties file on the classpath

    at com.amazonaws.auth.ClasspathPropertiesFileCredentialsProvider.getCredentials(ClasspathPropertiesFileCredentialsProvider.java:81)
    at com.amazonaws.services.ec2.AmazonEC2Client.invoke(AmazonEC2Client.java:8359)