SpringBoot
Spring boot自动配置 完成项目打成jar包发布
spring boot-starter 基础包
配置 properties
yml
主入口类
双重作用 启动程序 启动tomcat
创建Bean。官网自动生成组入口类，properties
IOC 功能
组件放容器中产生对象 产生依赖关系
@Configuration //beans
@Bean 产生两个Bean
组件扫描
@componentScan 开启组件扫描
@component 扫描标记
Bean对象参数注入
作用：将applicationContext.properties文件参数传入组件
注解标记
@EnableConfigurationProperties
启用参数注入功能
@EnableConfigurationProperties //启动这个@ConfigurationProperties
默认将application.properties中同名属性注入到Bean对象
@Value("$()")
SpringBoot自动配置
@EnableAutoConfiguration
可以顶替一系列的@Enable配置文件
如 ：@EnableAspectJAutoProxy
除了上述标记，还可以自动追加功能组件配置，创建出对象支持 MVC AOP
C:\Users\v_huidongqu.m2\mybaitsPlusRes\org\springframework\boot\spring-boot-autoconfigure\1.4.2.RELEASE\spring-boot-autoconfigure-1.4.2.RELEASE.jar— META-INF----spring.factories
# Auto Configure
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
org.springframework.boot.autoconfigure.admin.SpringApplicationAdminJmxAutoConfiguration,\
org.springframework.boot.autoconfigure.aop.AopAutoConfiguration,\
org.springframework.boot.autoconfigure.amqp.RabbitAutoConfiguration,\
org.springframework.boot.autoconfigure.MessageSourceAutoConfiguration,\
org.springframework.boot.autoconfigure.PropertyPlaceholderAutoConfiguration,\
org.springframework.boot.autoconfigure.batch.BatchAutoConfiguration,\
org.springframework.boot.autoconfigure.cache.CacheAutoConfiguration,\
org.springframework.boot.autoconfigure.cassandra.CassandraAutoConfiguration,\
org.springframework.boot.autoconfigure.cloud.CloudAutoConfiguration,\
org.springframework.boot.autoconfigure.context.ConfigurationPropertiesAutoConfiguration,\
org.springframework.boot.autoconfigure.couchbase.CouchbaseAutoConfiguration,\
org.springframework.boot.autoconfigure.dao.PersistenceExceptionTranslationAutoConfiguration,\
org.springframework.boot.autoconfigure.data.cassandra.CassandraDataAutoConfiguration,\
org.springframework.boot.autoconfigure.data.cassandra.CassandraRepositoriesAutoConfiguration,\
org.springframework.boot.autoconfigure.data.couchbase.CouchbaseDataAutoConfiguration,\
org.springframework.boot.autoconfigure.data.couchbase.CouchbaseRepositoriesAutoConfiguration,\
org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchAutoConfiguration,\
org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchDataAutoConfiguration,\
org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchRepositoriesAutoConfiguration,\
org.springframework.boot.autoconfigure.data.jpa.JpaRepositoriesAutoConfiguration,\
org.springframework.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration,\
org.springframework.boot.autoconfigure.data.mongo.MongoRepositoriesAutoConfiguration,\
org.springframework.boot.autoconfigure.data.neo4j.Neo4jDataAutoConfiguration,\
org.springframework.boot.autoconfigure.data.neo4j.Neo4jRepositoriesAutoConfiguration,\
org.springframework.boot.autoconfigure.data.solr.SolrRepositoriesAutoConfiguration,\
org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration,\
org.springframework.boot.autoconfigure.data.redis.RedisRepositoriesAutoConfiguration,\
org.springframework.boot.autoconfigure.data.rest.RepositoryRestMvcAutoConfiguration,\
org.springframework.boot.autoconfigure.data.web.SpringDataWebAutoConfiguration,\
org.springframework.boot.autoconfigure.elasticsearch.jest.JestAutoConfiguration,\
org.springframework.boot.autoconfigure.freemarker.FreeMarkerAutoConfiguration,\
org.springframework.boot.autoconfigure.gson.GsonAutoConfiguration,\
org.springframework.boot.autoconfigure.h2.H2ConsoleAutoConfiguration,\
org.springframework.boot.autoconfigure.hateoas.HypermediaAutoConfiguration,\
org.springframework.boot.autoconfigure.hazelcast.HazelcastAutoConfiguration,\
org.springframework.boot.autoconfigure.hazelcast.HazelcastJpaDependencyAutoConfiguration,\
org.springframework.boot.autoconfigure.info.ProjectInfoAutoConfiguration,\
org.springframework.boot.autoconfigure.integration.IntegrationAutoConfiguration,\
org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration,\
org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration,\
org.springframework.boot.autoconfigure.jdbc.JdbcTemplateAutoConfiguration,\
org.springframework.boot.autoconfigure.jdbc.JndiDataSourceAutoConfiguration,\
org.springframework.boot.autoconfigure.jdbc.XADataSourceAutoConfiguration,\
org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration,\
org.springframework.boot.autoconfigure.jms.JmsAutoConfiguration,\
org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration,\
org.springframework.boot.autoconfigure.jms.JndiConnectionFactoryAutoConfiguration,\
org.springframework.boot.autoconfigure.jms.activemq.ActiveMQAutoConfiguration,\
org.springframework.boot.autoconfigure.jms.artemis.ArtemisAutoConfiguration,\
org.springframework.boot.autoconfigure.jms.hornetq.HornetQAutoConfiguration,\
org.springframework.boot.autoconfigure.flyway.FlywayAutoConfiguration,\
org.springframework.boot.autoconfigure.groovy.template.GroovyTemplateAutoConfiguration,\
org.springframework.boot.autoconfigure.jersey.JerseyAutoConfiguration,\
org.springframework.boot.autoconfigure.jooq.JooqAutoConfiguration,\
org.springframework.boot.autoconfigure.liquibase.LiquibaseAutoConfiguration,\
org.springframework.boot.autoconfigure.mail.MailSenderAutoConfiguration,\
org.springframework.boot.autoconfigure.mail.MailSenderValidatorAutoConfiguration,\
org.springframework.boot.autoconfigure.mobile.DeviceResolverAutoConfiguration,\
org.springframework.boot.autoconfigure.mobile.DeviceDelegatingViewResolverAutoConfiguration,\
org.springframework.boot.autoconfigure.mobile.SitePreferenceAutoConfiguration,\
org.springframework.boot.autoconfigure.mongo.embedded.EmbeddedMongoAutoConfiguration,\
org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration,\
org.springframework.boot.autoconfigure.mustache.MustacheAutoConfiguration,\
org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration,\
org.springframework.boot.autoconfigure.reactor.ReactorAutoConfiguration,\
org.springframework.boot.autoconfigure.security.SecurityAutoConfiguration,\
org.springframework.boot.autoconfigure.security.SecurityFilterAutoConfiguration,\
org.springframework.boot.autoconfigure.security.FallbackWebSecurityAutoConfiguration,\
org.springframework.boot.autoconfigure.security.oauth2.OAuth2AutoConfiguration,\
org.springframework.boot.autoconfigure.sendgrid.SendGridAutoConfiguration,\
org.springframework.boot.autoconfigure.session.SessionAutoConfiguration,\
org.springframework.boot.autoconfigure.social.SocialWebAutoConfiguration,\
org.springframework.boot.autoconfigure.social.FacebookAutoConfiguration,\
org.springframework.boot.autoconfigure.social.LinkedInAutoConfiguration,\
org.springframework.boot.autoconfigure.social.TwitterAutoConfiguration,\
org.springframework.boot.autoconfigure.solr.SolrAutoConfiguration,\
org.springframework.boot.autoconfigure.velocity.VelocityAutoConfiguration,\
org.springframework.boot.autoconfigure.thymeleaf.ThymeleafAutoConfiguration,\
org.springframework.boot.autoconfigure.transaction.TransactionAutoConfiguration,\
org.springframework.boot.autoconfigure.transaction.jta.JtaAutoConfiguration,\
org.springframework.boot.autoconfigure.web.DispatcherServletAutoConfiguration,\
org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration,\
org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration,\
org.springframework.boot.autoconfigure.web.HttpEncodingAutoConfiguration,\
org.springframework.boot.autoconfigure.web.HttpMessageConvertersAutoConfiguration,\
org.springframework.boot.autoconfigure.web.MultipartAutoConfiguration,\
org.springframework.boot.autoconfigure.web.ServerPropertiesAutoConfiguration,\
org.springframework.boot.autoconfigure.web.WebClientAutoConfiguration,\
org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration,\
org.springframework.boot.autoconfigure.websocket.WebSocketAutoConfiguration,\
org.springframework.boot.autoconfigure.websocket.WebSocketMessagingAutoConfiguration,\
org.springframework.boot.autoconfigure.webservices.WebServicesAutoConfiguration
@SpringBootApplication属于Boot顶级标记，内部包含之前学过的Controller service Respository
org.apache.commons.dbcp
cn/com/org 组织名 产品名 域名
主入口类（启动类）
添加@SpringBootApplication BootApplication 构建对象
SpringBoot支撑RESTFul响应 不支持jsp响应，如何要支持，需要配置文件
IOC创建连接池，
自定义连接池
通过主入口类进行创建 默认子包扫描，
SpringBoot连接池
SpringBoot开启自动配置，可以自动创建DataSource连接池对象，id为dataSource.使用方法如下：
—-在pom.xml添加Spring-boot-starter-jdbc定义
----在appliaction.properties参数注入
默认key为
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
//**指定的连接数据池**
spring.datasource.type=org.apache.commons.dbcp.BasicDataSource
—测试dataSource对象
首选创建tomcat-jdbc连接池对象
如果没找到tomcat连接池 接着查找HikarICP
如果HikarICP连接池，接着查找DBCP,但不推荐使用
如果没找到dbcp连接池，查找dbcp2
项目使用DBCP2
org.apache.tomcat.jdbc.pool.DataSource@2fb3260{ConnectionPool[defaultAutoCommit=null;
org.apache.commons.dbcp.BasicDataSource@2ca817f3
org.apache.commons.dbcp2.BasicDataSource@2b06b791
版本可以不指定，使自动跟parent自动匹配
<!--mysql 数据库连接 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- jdb、dao tomcat连接池 默认为tomcat-jdbc -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
<exclusions>
<!-- 排除功能 -->
<exclusion>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jdbc</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- dbcp数据库连接池 -->
<!-- <dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency> -->
<!-- dbcp2 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
</dependency>
自定义连接池对象
构建c3p0连接池
1.在pom.xml 添加c3p0定义
<!-- c3p0 创建对象 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
</dependencies>
参数在application.properties
#c3p0
db.c3p0.user=root
db.c3p0.password=123456
db.c3p0.jdbcUrl=jdbc:mysql://localhost:3306/test
db.c3p0.driverClass=com.mysql.jdbc.Driver
2.编写c3p0DataSource.java
@Configuration
public class C3p0DataSourceConfig {
@Bean("c3p0")
@Primary//当存在多个同类型连接池，默认采用这个连接池@Primary标记·的·
@ConfigurationProperties(prefix = "db.c3p0")
public DataSource createC3p0DataSource() throws PropertyVetoException {
ComboPooledDataSource dataSource=new ComboPooledDataSource();
// dataSource.setUser("root");
// dataSource.setPassword("123456");
// dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/text");
// dataSource.setDriverClass("com.mysql.jdbc.Driver");
//构建 ComboPooledDataSource对象com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement ->
return DataSourceBuilder.create().type(ComboPooledDataSource.class).build();
//构建tomcat jdb corg.apache.tomcat.jdbc.pool.DataSource@3381423d
//return DataSourceBuilder.create().build();
// return dataSource;
}
}
3.测试
@Test
public void test4() throws ClassNotFoundException, SQLException {
ApplicationContext ac=SpringApplication.run(BootApplication.class);
DataSource dataSource=ac.getBean("c3p0",DataSource.class);
System.out.println(dataSource);
}
}
4.自定义创建连接池，默认连接池不再创建
注意事项
@Resource(name=“c3p0”)
private DataSource dataSource;
当多个连接池，使用name属性指定
对某个数据库操作使用自定义
当存在多个数据库连接池，使用多个数据库连接池进行自定义数据库连接池
自动配置
–搭建Boot工程，
1.创建MAVEN project
-2.pomxml添加定义
boot-parent boot-starter boot-starter-jdbc jdbc定义
添加application.properties 定义默认连接池参数
—3.根据表操作，创建实体表
—4.主入口类
@SpringBootApplication
–5.创建userDao接口
6.实现接口，参数注入
@Repository
@Resource
7.测试