Spring

问题 I have 5 Spring Boot web applications but have only one Server (low-end). What is the best way to deploy all 5 in one Server? Having only one web container (Tomcat) and deploy all of them as separate war files on the same Tomcat or run all 5 on different Tomcat containers (Spring Boot default behavior)? What is your recommendation by considering performance and maintenanability? 回答1: IMHO, if you're running a resource-constrained server, your best bet is to deploy all of your applications as

问题 I have 5 Spring Boot web applications but have only one Server (low-end). What is the best way to deploy all 5 in one Server? Having only one web container (Tomcat) and deploy all of them as separate war files on the same Tomcat or run all 5 on different Tomcat containers (Spring Boot default behavior)? What is your recommendation by considering performance and maintenanability? 回答1: IMHO, if you're running a resource-constrained server, your best bet is to deploy all of your applications as

问题 I've created a simple demo application to familiarize myself with the new WebSocketClient. I found a tutorial at: https://stackify.com/reactive-spring-5/ (Reactive WebSocket Clients): @Bean CommandLineRunner demo() { return args -> { Flux<String> input = Flux.<String>generate(sink -> sink.next("This is a test")) .delayElements(Duration.ofSeconds(1)); WebSocketClient client = new ReactorNettyWebSocketClient(); client.execute(new URI("ws://echo.websocket.org"), session -> session.send(input.map

问题 I'm trying to replace some projects to use Spring Data JDBC instead of using JdbcTemplate . Now, I'd like to use it for multiple DataSource s, how can I configure it in Spring Data JDBC? 回答1: There is currently no support for working with two or more DataSource s. You'd have to manually redo what the JdbcRepositoryFactoryBean does. 来源： https://stackoverflow.com/questions/49914310/how-to-configure-multiple-datasources-in-spring-data-jdbc

问题 After signing-in, the websockets cannot find the current user by session.getPrincipal() (it returns null). Here is the Java code for WebSockets: @Configuration @EnableWebSocketMessageBroker public class WebSocketConfiguration extends AbstractWebSocketMessageBrokerConfigurer { @Override public void configureMessageBroker(MessageBrokerRegistry config) { config.enableSimpleBroker("/queue", "/topic"); config.setApplicationDestinationPrefixes("/socket"); config.setUserDestinationPrefix("/user"); }

问题 After signing-in, the websockets cannot find the current user by session.getPrincipal() (it returns null). Here is the Java code for WebSockets: @Configuration @EnableWebSocketMessageBroker public class WebSocketConfiguration extends AbstractWebSocketMessageBrokerConfigurer { @Override public void configureMessageBroker(MessageBrokerRegistry config) { config.enableSimpleBroker("/queue", "/topic"); config.setApplicationDestinationPrefixes("/socket"); config.setUserDestinationPrefix("/user"); }

问题 I have some questions about ssl in spring boot. I have files certifications and private key with extension .crt and .key. how can I get from them right format for settings in spring boot like this server.ssl.key-store-type=PKCS12 server.ssl.key-store=classpath:keystore.p12 server.ssl.key-store-password=password server.ssl.key-alias=tomcat 回答1: To convert a certificate file and private key to PKCS#12(.p12) format, use the below command: openssl pkcs12 -export -out certificate.p12 -inkey

问题 I want to read multiples properties files from a specific location, say C:\config . I'm taking help of @PropertySource annotation. Is there a way to read these files in Springboot using some wildcard character e.g (*.properties). So what I intended to achieve is something like this @PropertySource("*.properties") }) public class SomeClass{ } If not, Is there a way to create these @PropertySource("foo.properties") or @PropertySource("bar.properties") programmatically and provide them to

问题 Hi I use spring jpa and as I understand its working mechanism truely it created at once in a singleton way. Is it possible to change or recreate datasource on running environment.Scenario like this,Mypassword changed and if I wont stop application that time all my calls take exception.I have a mechanism to check password and change it dynamically and my others request get new password create new datasource and keep on working. And another question is I have multiple datasource,at the

问题 Hi I use spring jpa and as I understand its working mechanism truely it created at once in a singleton way. Is it possible to change or recreate datasource on running environment.Scenario like this,Mypassword changed and if I wont stop application that time all my calls take exception.I have a mechanism to check password and change it dynamically and my others request get new password create new datasource and keep on working. And another question is I have multiple datasource,at the