D’autres exemples de kits AWS SDK sont disponibles dans le référentiel GitHub AWS Doc SDK Examples.
Exemples de code pour AWS IoT utilisant des kits SDK AWS
Les exemples de code suivants montrent comment utiliser les AWS IoT avec un kit de développement logiciel (SDK) AWS.
Les principes de base sont des exemples de code qui vous montrent comment effectuer les opérations essentielles au sein d’un service.
Les actions sont des extraits de code de programmes plus larges et elles doivent être exécutées dans leur contexte. Alors que les actions vous indiquent comment appeler des fonctions de service individuelles, vous pouvez les voir en contexte dans leurs scénarios associés.
Ressources supplémentaires
Mise en route
Les exemples de code suivants montrent comment démarrer avec AWS IoT.
- C++
-
- kit SDK pour C++
-
Code pour le fichier CMake CMakeLists.txt.
# Set the minimum required version of CMake for this project.
cmake_minimum_required(VERSION 3.13)
# Set the AWS service components used by this project.
set(SERVICE_COMPONENTS iot)
# Set this project's name.
project("hello_iot")
# Set the C++ standard to use to build this target.
# At least C++ 11 is required for the AWS SDK for C++.
set(CMAKE_CXX_STANDARD 11)
# Use the MSVC variable to determine if this is a Windows build.
set(WINDOWS_BUILD ${MSVC})
if (WINDOWS_BUILD) # Set the location where CMake can find the installed libraries for the AWS SDK.
string(REPLACE ";" "/aws-cpp-sdk-all;" SYSTEM_MODULE_PATH "${CMAKE_SYSTEM_PREFIX_PATH}/aws-cpp-sdk-all")
list(APPEND CMAKE_PREFIX_PATH ${SYSTEM_MODULE_PATH})
endif ()
# Find the AWS SDK for C++ package.
find_package(AWSSDK REQUIRED COMPONENTS ${SERVICE_COMPONENTS})
if (WINDOWS_BUILD AND AWSSDK_INSTALL_AS_SHARED_LIBS)
# Copy relevant AWS SDK for C++ libraries into the current binary directory for running and debugging.
# set(BIN_SUB_DIR "/Debug") # If you are building from the command line, you may need to uncomment this
# and set the proper subdirectory to the executables' location.
AWSSDK_CPY_DYN_LIBS(SERVICE_COMPONENTS "" ${CMAKE_CURRENT_BINARY_DIR}${BIN_SUB_DIR})
endif ()
add_executable(${PROJECT_NAME}
hello_iot.cpp)
target_link_libraries(${PROJECT_NAME}
${AWSSDK_LINK_LIBRARIES})
Code pour le fichier source hello_iot.cpp.
#include <aws/core/Aws.h>
#include <aws/iot/IoTClient.h>
#include <aws/iot/model/ListThingsRequest.h>
#include <iostream>
/*
* A "Hello IoT" starter application which initializes an AWS IoT client and
* lists the AWS IoT topics in the current account.
*
* main function
*
* Usage: 'hello_iot'
*
*/
int main(int argc, char **argv) {
Aws::SDKOptions options;
// Optional: change the log level for debugging.
// options.loggingOptions.logLevel = Aws::Utils::Logging::LogLevel::Debug;
Aws::InitAPI(options); // Should only be called once.
{
Aws::Client::ClientConfiguration clientConfig;
// Optional: Set to the AWS Region (overrides config file).
// clientConfig.region = "us-east-1";
Aws::IoT::IoTClient iotClient(clientConfig);
// List the things in the current account.
Aws::IoT::Model::ListThingsRequest listThingsRequest;
Aws::String nextToken; // Used for pagination.
Aws::Vector<Aws::IoT::Model::ThingAttribute> allThings;
do {
if (!nextToken.empty()) {
listThingsRequest.SetNextToken(nextToken);
}
Aws::IoT::Model::ListThingsOutcome listThingsOutcome = iotClient.ListThings(
listThingsRequest);
if (listThingsOutcome.IsSuccess()) {
const Aws::Vector<Aws::IoT::Model::ThingAttribute> &things = listThingsOutcome.GetResult().GetThings();
allThings.insert(allThings.end(), things.begin(), things.end());
nextToken = listThingsOutcome.GetResult().GetNextToken();
}
else {
std::cerr << "List things failed"
<< listThingsOutcome.GetError().GetMessage() << std::endl;
break;
}
} while (!nextToken.empty());
std::cout << allThings.size() << " thing(s) found." << std::endl;
for (auto const &thing: allThings) {
std::cout << thing.GetThingName() << std::endl;
}
}
Aws::ShutdownAPI(options); // Should only be called once.
return 0;
}
- Java
-
- SDK pour Java 2.x
-
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.iot.IotClient;
import software.amazon.awssdk.services.iot.model.ListThingsRequest;
import software.amazon.awssdk.services.iot.model.ListThingsResponse;
import software.amazon.awssdk.services.iot.model.ThingAttribute;
import software.amazon.awssdk.services.iot.paginators.ListThingsIterable;
import java.util.List;
public class HelloIoT {
public static void main(String[] args) {
System.out.println("Hello AWS IoT. Here is a listing of your AWS IoT Things:");
IotClient iotClient = IotClient.builder()
.region(Region.US_EAST_1)
.build();
listAllThings(iotClient);
}
public static void listAllThings(IotClient iotClient) {
iotClient.listThingsPaginator(ListThingsRequest.builder()
.maxResults(10)
.build())
.stream()
.flatMap(response -> response.things().stream())
.forEach(attribute -> {
System.out.println("Thing name: " + attribute.thingName());
System.out.println("Thing ARN: " + attribute.thingArn());
});
}
}
- Kotlin
-
- SDK pour Kotlin
-
import aws.sdk.kotlin.services.iot.IotClient
import aws.sdk.kotlin.services.iot.model.ListThingsRequest
suspend fun main() {
println("A listing of your AWS IoT Things:")
listAllThings()
}
suspend fun listAllThings() {
val thingsRequest =
ListThingsRequest {
maxResults = 10
}
IotClient.fromEnvironment { region = "us-east-1" }.use { iotClient ->
val response = iotClient.listThings(thingsRequest)
val thingList = response.things
if (thingList != null) {
for (attribute in thingList) {
println("Thing name ${attribute.thingName}")
println("Thing ARN: ${attribute.thingArn}")
}
}
}
}
