Throw IllegalStateException("Failed to load yaml configuration from $path", ex)Īn InternalResourceViewResolver named ‘defaultViewResolver’. Public class MyEnvironmentPostProcessor implements EnvironmentPostProcessor Look for annotations that switch features on and off in response to SpEL expressions, normally evaluated with placeholders resolved from the Environment. Look for annotations that bind directly to the Environment. Look for uses of the bind method on the Binder to pull configuration values explicitly out of the Environment in a relaxed manner. In a running application with actuator enabled, look at the configprops endpoint. Thus, ServerProperties has prefix="server" and its configuration properties are server.port, server.address, and others. The annotation has a name attribute that acts as a prefix to external properties. Look for classes that are (such as ServerProperties) and read from there the available external configuration options. In a running application with actuator enabled, look at the conditions endpoint ( /actuator/conditions or the JMX equivalent) for the same information. Pay special attention to the annotations to find out what features they enable and when.Īdd -debug to the command line or a System property -Ddebug to get a log on the console of all the auto-configuration decisions that were made in your app. Look for classes called *AutoConfiguration and read their sources. Convert an Existing Application to Spring Boot Build an Executable Archive From Ant without Using spring-boot-antlib Remote Debug a Spring Boot Application Started with Maven Create a Non-executable JAR with Exclusions Extract Specific Libraries When an Executable Jar Runs Use a Spring Boot Application as a Dependency Structure classes for inclusion in slice tests Use Testcontainers for Integration Testing Reload Java Classes without Restarting the Container Reload Templates without Restarting the Container Enable HTTPS When Running behind a Proxy Server Change the UserDetailsService and Add User Accounts Switch off the Spring Boot Security Configuration Map Health Indicators to Micrometer Metrics Change the HTTP Port or Address of the Actuator Endpoints Detect a Bean That Depends On Database Initialization Execute Liquibase Database Migrations on Startup Execute Flyway Database Migrations on Startup Use a Higher-level Database Migration Tool Initialize a Database Using Basic SQL Scripts ![]() Configure a Component that is Used by JPA Expose Spring Data Repositories as REST Endpoint Use Spring Data JPA and Mongo Repositories Use Dependency Injection in Hibernate Components Separate Definitions from Spring Configuration Use Composite Configuration to Configure Log4j 2 Configure the TcpClient used by a Reactor Netty-based WebClient Use Jersey Alongside Another Web Framework Secure Jersey endpoints with Spring Security Switch Off the Spring MVC DispatcherServlet Add Servlets, Filters, and Listeners by Using Classpath Scanning Disable Registration of a Servlet or Filter.Add a Servlet, Filter, or Listener by Using a Spring Bean Add a Servlet, Filter, or Listener to an Application Discover Built-in Options for External Properties Change Configuration Depending on the Environment ![]() Change the Location of External Properties of an Application Externalize the Configuration of SpringApplication ![]() Automatic Property Expansion Using Gradle Automatically Expand Properties at Build Time Build an ApplicationContext Hierarchy (Adding a Parent or Root Context) Customize the Environment or ApplicationContext Before It Starts
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