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[英]How to expose multiple function endpoints with Spring Cloud Function?
[英]How to code Spring Cloud Function in Azure with multiple endpoints?
我正在嘗試使用 Spring 雲創建 2 個 Azure 函數,但我無法使其工作。
@Configuration
public class FirstFunction extends AzureSpringBootRequestHandler<Optional<Void>, String>
{
@FunctionName("firstFunction")
public void run(
@HttpTrigger(name = "req", methods = {HttpMethod.POST}, authLevel = AuthorizationLevel.FUNCTION) HttpRequestMessage<Optional<String>> request,
final ExecutionContext context)
{
handleRequest(Optional.empty(), context);
}
@Bean
@Lazy
Function<Optional<Void>, String> firstFunction()
{
return context ->
{
// do firstFunction stuff;
};
}
}
@Configuration
public class SecondFunction extends AzureSpringBootRequestHandler<Optional<Void>, String>
{
@FunctionName("secondFunction")
public void run(
@HttpTrigger(name = "req", methods = {HttpMethod.POST}, authLevel = AuthorizationLevel.FUNCTION) HttpRequestMessage<Optional<String>> request,
final ExecutionContext context)
{
handleRequest(Optional.empty(), context);
}
@Bean
@Lazy
Function<Optional<Void>, String> secondFunction()
{
return context ->
{
// do secondFunction stuff;
};
}
}
@SpringBootApplication
public class Application
{
public static void main(final String[] args)
{
SpringApplication.run(Application.class, args);
}
}
使用上面的代碼和spring-cloud-function-dependencies 2.0.1.RELEASE
,它在調用firstFunction
和secondFunction
端點時總是命中firstFunction Bean
。
在進行了一些谷歌搜索之后,我發現這個SO answer建議移至2.1
。
但是,當我嘗試更改為2.1.1.RELEASE
時,我遇到了一個異常,它無法找到主要的 class:
System.Private.CoreLib: Exception while executing function: Functions.extractContent. System.Private.CoreLib: Result: Failure
Exception: IllegalArgumentException: Failed to locate main class
Stack: java.lang.IllegalStateException: Failed to discover main class. An attempt was made to discover main class as 'MAIN_CLASS' environment variable, system property as well as entry
in META-INF/MANIFEST.MF (in that order).
需要一些關於我做錯了什么的幫助。
我在我身邊測試,一切正常。
您可以在以下位置獲得我的演示: https://github.com/AI-EVO/azuresptingfunction.git 。 項目基於官方demo: https://github.com/Azure-Samples/hello-spring-function-azure
我的改變:
@SpringBootApplication
public class HelloFunction {
public static void main(String[] args) throws Exception {
SpringApplication.run(HelloFunction.class, args);
}
@Bean("hello")
public Function<User, Greeting> hello() {
return user -> new Greeting("Hello! Welcome, " + user.getName());
}
@Bean("hi")
public Function<User, Greeting> hi() {
return user -> new Greeting("Hi! Welcome, " + user.getName());
}
}
public class HelloHandler extends AzureSpringBootRequestHandler<User, Greeting> {
@FunctionName("hello")
public Greeting execute(
@HttpTrigger(name = "request", methods = {HttpMethod.GET, HttpMethod.POST}, authLevel = AuthorizationLevel.ANONYMOUS) HttpRequestMessage<Optional<User>> request,
ExecutionContext context) {
context.getLogger().info("Greeting user name: " + request.getBody().get().getName());
return handleRequest(request.getBody().get(), context);
}
}
public class HiHandler extends AzureSpringBootRequestHandler<User, Greeting> {
@FunctionName("hi")
public Greeting execute(@HttpTrigger(name = "request", methods = { HttpMethod.GET,
HttpMethod.POST }, authLevel = AuthorizationLevel.ANONYMOUS) HttpRequestMessage<Optional<User>> request,
ExecutionContext context) {
context.getLogger().info("Greeting user name: " + request.getBody().get().getName());
return handleRequest(request.getBody().get(), context);
}
}
mvn azure-functions:run
來自 function 你好:
來自 function 嗨:
這里拋出異常。 Spring Cloud Function 試圖從環境變量然后系統屬性中找到“MAIN_CLASS”設置。 如果設置不存在,它將嘗試從每個依賴項 jar 中的“/META-INF/MANIFEST.MF”文件中搜索屬性。
您可以將 package 時的屬性設置為 jar ,就像這里的示例(gradle)一樣。
如果您不設置該屬性,則可能需要檢查您的依賴關系。 它需要包含 'org.springframework.cloud:spring-cloud-starter-function-web:2.1.1.RELEASE' 或 'org.springframework.cloud:spring-cloud-starter-function-webflux:2.1.1.RELEASE '。 依賴項在“/META-INF/MANIFEST.MF”文件中包含默認的“Main-Class”。
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