简介
mysql应该是我们在日常工作中使用到的一个非常普遍的数据库，虽然mysql现在是oracle公司的，但是它是开源的，市场占有率还是非常高的。
今天我们将会介绍r2dbc在mysql中的使用。
r2dbc-mysql的maven依赖
要想使用r2dbc-mysql，我们需要添加如下的maven依赖：
<dependency> <groupId>dev.miku</groupId> <artifactId>r2dbc-mysql</artifactId> <version>0.8.2.RELEASE</version> </dependency>
当然，如果你想使用snapshot版本的话，可以这样：
<dependency>
<groupId>dev.miku</groupId>
<artifactId>r2dbc-mysql</artifactId>
<version>${r2dbc-mysql.version}.BUILD-SNAPSHOT</version>
</dependency>
<repository>
<id>sonatype-snapshots</id>
<name>SonaType Snapshots</name>
<url>https://oss.sonatype.org/content/repositories/snapshots</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository&g<strong>本文来源gaodai#ma#com搞@代~码^网+</strong>t;
创建connectionFactory
创建connectionFactory的代码实际上使用的r2dbc的标准接口，所以和之前讲到的h2的创建代码基本上是一样的：
// Notice: the query string must be URL encoded ConnectionFactory connectionFactory = ConnectionFactories.get( "r2dbcs:mysql://root:[email protected]:3306/r2dbc?" + "zeroDate=use_round&" + "sslMode=verify_identity&" + "useServerPrepareStatement=true&" + "tlsVersion=TLSv1.3%2CTLSv1.2%2CTLSv1.1&" + "sslCa=%2Fpath%2Fto%2Fmysql%2Fca.pem&" + "sslKey=%2Fpath%2Fto%2Fmysql%2Fclient-key.pem&" + "sslCert=%2Fpath%2Fto%2Fmysql%2Fclient-cert.pem&" + "sslKeyPassword=key-pem-password-in-here" ) // Creating a Mono using Project Reactor Mono<Connection> connectionMono = Mono.from(connectionFactory.create());
不同的是ConnectionFactories传入的参数不同。
我们也支持unix domain socket的格式：
// Minimum configuration for unix domain socket
ConnectionFactory connectionFactory = ConnectionFactories.get("r2dbc:mysql://root@unix?unixSocket=%2Fpath%2Fto%2Fmysql.sock")
Mono<Connection> connectionMono = Mono.from(connectionFactory.create());
同样的，我们也支持从ConnectionFactoryOptions中创建ConnectionFactory：
ConnectionFactoryOptions options = ConnectionFactoryOptions.builder()
.option(DRIVER, "mysql")
.option(HOST, "127.0.0.1")
.option(USER, "root")
.option(PORT, 3306) // optional, default 3306
.option(PASSWORD, "database-password-in-here") // optional, default null, null means has no password
.option(DATABASE, "r2dbc") // optional, default null, null means not specifying the database
.option(CONNECT_TIMEOUT, Duration.ofSeconds(3)) // optional, default null, null means no timeout
.option(SSL, true) // optional, default sslMode is "preferred", it will be ignore if sslMode is set
.option(Option.valueOf("sslMode"), "verify_identity") // optional, default "preferred"
.option(Option.valueOf("sslCa"), "/path/to/mysql/ca.pem") // required when sslMode is verify_ca or verify_identity, default null, null means has no server CA cert
.option(Option.valueOf("sslCert"), "/path/to/mysql/client-cert.pem") // optional, default null, null means has no client cert
.option(Option.valueOf("sslKey"), "/path/to/mysql/client-key.pem") // optional, default null, null means has no client key
.option(Option.valueOf("sslKeyPassword"), "key-pem-password-in-here") // optional, default null, null means has no password for client key (i.e. "sslKey")
.option(Option.valueOf("tlsVersion"), "TLSv1.3,TLSv1.2,TLSv1.1") // optional, default is auto-selected by the server
.option(Option.valueOf("sslHostnameVerifier"), "com.example.demo.MyVerifier") // optional, default is null, null means use standard verifier
.option(Option.valueOf("sslContextBuilderCustomizer"), "com.example.demo.MyCustomizer") // optional, default is no-op customizer
.option(Option.valueOf("zeroDate"), "use_null") // optional, default "use_null"
.option(Option.valueOf("useServerPrepareStatement"), true) // optional, default false
.option(Option.valueOf("tcpKeepAlive"), true) // optional, default false
.option(Option.valueOf("tcpNoDelay"), true) // optional, default false
.option(Option.valueOf("autodetectExtensions"), false) // optional, default false
.build();
ConnectionFactory connectionFactory = ConnectionFactories.get(options);
// Creating a Mono using Project Reactor
Mono<Connection> connectionMono = Mono.from(connectionFactory.create());
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转载请注明原文链接：深入理解r2dbc在mysql中的使用
转载请注明原文链接：深入理解r2dbc在mysql中的使用
