Spring Boot also <<actuator#actuator.metrics.supported,configures built-in instrumentation>> that you can control via configuration or dedicated annotation markers.
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@@ -229,7 +229,7 @@ An auto-configured `GraphiteConfig` and `Clock` beans are provided unless you de
Assuming the above `Dockerfile` is in the current directory, your docker image can be built with `docker build .`, or optionally specifying the path to your application jar, as shown in the following example:
@@ -34,7 +34,7 @@ Spring Boot provides auto-configuration for Spring MVC that works well with most
The auto-configuration adds the following features on top of Spring's defaults:
* Inclusion of `ContentNegotiatingViewResolver` and `BeanNameViewResolver` beans.
* Support for serving static resources, including support for WebJars (covered <<features#features.developing-web-applications.spring-mvc.static-content,later in this document>>)).
* Support for serving static resources, including support for WebJars (covered <<features#features.developing-web-applications.spring-mvc.static-content,later in this document>>).
* Automatic registration of `Converter`, `GenericConverter`, and `Formatter` beans.
* Support for `HttpMessageConverters` (covered <<features#features.developing-web-applications.spring-mvc.message-converters,later in this document>>).
* Automatic registration of `MessageCodesResolver` (covered <<features#features.developing-web-applications.spring-mvc.message-codes,later in this document>>).
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@@ -218,7 +218,7 @@ Nowadays, Content Negotiation is much more reliable.
There are other ways to deal with HTTP clients that don't consistently send proper "Accept" request headers.
Instead of using suffix matching, we can use a query parameter to ensure that requests like `"GET /projects/spring-boot?format=json"` will be mapped to `@GetMapping("/projects/spring-boot")`:
TIP: Use the prefix `optional:` if the <<features#features.external-config.files.optional-prefix,locations are optional>> and you don't mind if they don't exist.
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@@ -671,7 +673,7 @@ If you wish you return a non-null instance of `Security` even when no properties
NOTE: The constructor arguments passed to `SpringApplication` are configuration sources for Spring beans.
In most cases, these are references to `@Configuration` classes, but they could also be references to XML configuration or to packages that should be scanned.
In most cases, these are references to `@Configuration` classes, but they could also be direct references `@Component` classes.
It is also possible to configure the `SpringApplication` by using an `application.properties` file.
See _<<features#features.external-config>>_ for details.
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@@ -395,7 +395,7 @@ TIP: If you want to know on which HTTP port the application is running, get the
=== Application Startup tracking
During the application startup, the `SpringApplication` and the `ApplicationContext` perform many tasks related to the application lifecycle,
the beans lifecycle or even processing application events.
With {spring-framework-api}/core/metrics/ApplicationStartup.html[`ApplicationStartup`], Spring Framework {spring-framework-docs}/core.html#context-functionality-startup[allows you to track the application startup sequence with ``StartupStep``s].
With {spring-framework-api}/core/metrics/ApplicationStartup.html[`ApplicationStartup`], Spring Framework {spring-framework-docs}/core.html#context-functionality-startup[allows you to track the application startup sequence with `StartupStep` objects].
This data can be collected for profiling purposes, or just to have a better understanding of an application startup process.
You can choose an `ApplicationStartup` implementation when setting up the `SpringApplication` instance.
@@ -105,7 +105,7 @@ For instance, if you use the {tomcat-docs}/jdbc-pool.html#Common_Attributes[Tomc
test-on-borrow: true
----
This will set the pool to wait 10000 ms before throwing an exception if no connection is available, limit the maximum number of connections to 50 and validate the connection before borrowing it from the pool.
This will set the pool to wait 10000ms before throwing an exception if no connection is available, limit the maximum number of connections to 50ms and validate the connection before borrowing it from the pool.
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@@ -253,18 +253,24 @@ By default, JPA databases are automatically created *only* if you use an embedde
You can explicitly configure JPA settings by using `+spring.jpa.*+` properties.
For example, to create and drop tables you can add the following line to your `application.properties`:
NOTE: Hibernate's own internal property name for this (if you happen to remember it better) is `hibernate.hbm2ddl.auto`.
You can set it, along with other Hibernate native properties, by using `+spring.jpa.properties.*+` (the prefix is stripped before adding them to the entity manager).
The following line shows an example of setting JPA properties for Hibernate:
@@ -4,7 +4,8 @@ If you have Spring WebFlux on your classpath, you can also choose to use `WebCli
Compared to `RestTemplate`, this client has a more functional feel and is fully reactive.
You can learn more about the `WebClient` in the dedicated {spring-framework-docs}/web-reactive.html#webflux-client[section in the Spring Framework docs].
Spring Boot creates and pre-configures a `WebClient.Builder` for you; it is strongly advised to inject it in your components and use it to create `WebClient` instances.
Spring Boot creates and pre-configures a `WebClient.Builder` for you.
It is strongly advised to inject it in your components and use it to create `WebClient` instances.
Spring Boot is configuring that builder to share HTTP resources, reflect codecs setup in the same fashion as the server ones (see <<features#features.developing-web-applications.spring-webflux.httpcodecs,WebFlux HTTP codecs auto-configuration>>), and more.
@@ -161,7 +161,6 @@ And the following example shows one way to set up the starters in Gradle:
}
}
}
}
----
NOTE: The Log4j starters gather together the dependencies for common logging requirements (such as having Tomcat use `java.util.logging` but configuring the output using Log4j 2).
The above configuration allows Neo4j-related beans in the application to communicate with Neo4j running inside the Testcontainers-managed Docker container.
@@ -118,7 +118,7 @@ The starters contain a lot of the dependencies that you need to get a project up
All **official** starters follow a similar naming pattern; `+spring-boot-starter-*+`, where `+*+` is a particular type of application.
This naming structure is intended to help when you need to find a starter.
The Maven integration in many IDEs lets you search dependencies by name.
For example, with the appropriate Eclipse or STS plugin installed, you can press `ctrl-space` in the POM editor and type "`spring-boot-starter`" for a complete list.
For example, with the appropriate Eclipse or Spring Tools plugin installed, you can press `ctrl-space` in the POM editor and type "`spring-boot-starter`" for a complete list.
As explained in the "`<<features#features.developing-auto-configuration.custom-starter,Creating Your Own Starter>>`" section, third party starters should not start with `spring-boot`, as it is reserved for official Spring Boot artifacts.
Rather, a third-party starter typically starts with the name of the project.
@@ -358,7 +358,7 @@ The remote client application is designed to be run from within your IDE.
You need to run `org.springframework.boot.devtools.RemoteSpringApplication` with the same classpath as the remote project that you connect to.
The application's single required argument is the remote URL to which it connects.
For example, if you are using Eclipse or STS and you have a project named `my-app` that you have deployed to Cloud Foundry, you would do the following:
For example, if you are using Eclipse or Spring Tools and you have a project named `my-app` that you have deployed to Cloud Foundry, you would do the following:
* Select `Run Configurations...` from the `Run` menu.
* Create a new `Java Application` "`launch configuration`".
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@@ -368,7 +368,7 @@ For example, if you are using Eclipse or STS and you have a project named `my-ap
A running remote client might resemble the following listing:
