Add auto-configuration for JdbcClient

Closes gh-36579

spring-boot-project/spring-boot-docs/src/docs/asciidoc/data/sql.adoc

@@ -1,6 +1,6 @@
 [[data.sql]]
 == SQL Databases
-The {spring-framework}[Spring Framework] provides extensive support for working with SQL databases, from direct JDBC access using `JdbcTemplate` to complete "`object relational mapping`" technologies such as Hibernate.
+The {spring-framework}[Spring Framework] provides extensive support for working with SQL databases, from direct JDBC access using `JdbcClient` or `JdbcTemplate` to complete "`object relational mapping`" technologies such as Hibernate.
 {spring-data}[Spring Data] provides an additional level of functionality: creating `Repository` implementations directly from interfaces and using conventions to generate queries from your method names.
 
 
@@ -176,6 +176,17 @@ If more than one `JdbcTemplate` is defined and no primary candidate exists, the
 
 
 
+[[data.sql.jdbc-client]]
+=== Using JdbcClient
+Spring's `JdbcClient` is auto-configured based on the presence of a `NamedParameterJdbcTemplate`.
+You can inject it directly in your own beans as well, as shown in the following example:
+
+include::code:MyBean[]
+
+If you rely on auto-configuration to create the underlying `JdbcTemplate`, any customization using `spring.jdbc.template.*` properties are taken into account in the client as well.
+
+
+
 [[data.sql.jpa-and-spring-data]]
 === JPA and Spring Data JPA
 The Java Persistence API is a standard technology that lets you "`map`" objects to relational databases.

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto/data-initialization.adoc

@@ -217,6 +217,7 @@ Spring Boot will automatically detect beans of the following types that depends
 - `AbstractEntityManagerFactoryBean` (unless configprop:spring.jpa.defer-datasource-initialization[] is set to `true`)
 - `DSLContext` (jOOQ)
 - `EntityManagerFactory` (unless configprop:spring.jpa.defer-datasource-initialization[] is set to `true`)
+- `JdbcClient`
 - `JdbcOperations`
 - `NamedParameterJdbcOperations`
 

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/data/sql/jdbcclient/MyBean.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2012-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.jdbcclient;
+
+import org.springframework.jdbc.core.simple.JdbcClient;
+import org.springframework.stereotype.Component;
+
+@Component
+public class MyBean {
+
+	private final JdbcClient jdbcClient;
+
+	public MyBean(JdbcClient jdbcClient) {
+		this.jdbcClient = jdbcClient;
+	}
+
+	public void doSomething() {
+		/* @chomp:line this.jdbcClient ... */ this.jdbcClient.sql("delete from customer").update();
+	}
+
+}