springboot自学笔记

1、创建maven项目，目录结构如下：

pom文件中引入所需的依赖

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.test.ouyang</groupId>  <artifactId>springboot</artifactId>  <version>0.0.1</version>  <packaging>jar</packaging>  <name>springboot</name>  <description>Demo project for Spring Boot</description><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.5.3.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><java.version>1.8</java.version></properties><dependencies><dependency>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-web</artifactId> </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-thymeleaf</artifactId>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-jdbc</artifactId>        </dependency><!-- 添加mybatis依赖-->  <dependency>            <groupId>org.mybatis</groupId>            <artifactId>mybatis-spring</artifactId>            <version>1.2.2</version>        </dependency>        <dependency>            <groupId>org.mybatis</groupId>            <artifactId>mybatis</artifactId>            <version>3.2.8</version>        </dependency><!--   添加mysql的jar     --><dependency><groupId>c3p0</groupId><artifactId>c3p0</artifactId><version>0.9.1.2</version></dependency>        <dependency>            <groupId>mysql</groupId>            <artifactId>mysql-connector-java</artifactId>        </dependency>        </dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

Application负责加载springdatasource并启动springboot项目

 

package com.test.ouyang;import java.util.logging.Logger;import javax.sql.DataSource;import org.apache.ibatis.session.SqlSessionFactory;import org.mybatis.spring.SqlSessionFactoryBean;import org.mybatis.spring.annotation.MapperScan;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.EnableAutoConfiguration;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.context.properties.ConfigurationProperties;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.ComponentScan;import org.springframework.core.io.support.PathMatchingResourcePatternResolver;import org.springframework.jdbc.datasource.DataSourceTransactionManager;import org.springframework.transaction.PlatformTransactionManager;import com.mchange.v2.c3p0.ComboPooledDataSource;import com.test.ouyang.banner.MyBannner;@EnableAutoConfiguration@SpringBootApplication@ComponentScan@MapperScan("com.test.ouyang.mapper")public class Application {public static Logger log_ = Logger.getLogger(Application.class.getName());/** * 配置spring datasource * 使用C3P0连接池 * 在application.properties中设置datasource的前缀必须由是spring.datasource开始 * */@Bean@ConfigurationProperties(prefix="spring.datasource")public DataSource dataSource(){return  new ComboPooledDataSource();}/** * 读取mybatis配置文件并获取sessionFactory * */@Bean    public SqlSessionFactory sqlSessionFactoryBean() throws Exception {        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();        sqlSessionFactoryBean.setDataSource(dataSource());        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();        sqlSessionFactoryBean.setMapperLocations(resolver.getResources("classpath:/mybatis/*.xml"));        return sqlSessionFactoryBean.getObject();    }/** * 添加事务管理 * */    @Bean    public PlatformTransactionManager transactionManager() {        return new DataSourceTransactionManager(dataSource());    }    /**     * 服务启动     */    public static void main(String[] args) {    SpringApplication application = new SpringApplication(Application.class);    MyBannner bannner = new MyBannner();    application.setBanner(bannner);    application.run(args);        log_.info("SpringBoot Start Success");    }}

application.properties文件中添加系统的配置信息

#配置C3P0数据源URLspring.datasource.jdbcUrl=jdbc\:mysql\://localhost\:3306/springboot?useUnicode\=true&characterEncoding\=utf8&zeroDateTimeBehavior\=convertToNull#配置C3P0数据源用户名spring.datasource.user=springboot##配置C3P0数据源密码spring.datasource.password=oyh1203#配置C3P0数据源JDBC驱动spring.datasource.driverClass=com.mysql.jdbc.Driver#初始化C3P0连接池数量spring.datasource.initialPoolSize=5#C3P0连接池最小数spring.datasource.minPoolSize=2#C3P0连接池最大数spring.datasource.maxPoolSize=100#C3P0检查超时时间spring.datasource.checkoutTimeout=10000#关闭thymeleaf缓存,避免开发过程中出现修改页面不生效的问题spring.thymeleaf.cache=false#设置页面所在路径spring.thymeleaf.prefix=classpath\:/static/#设置页面后缀名spring.thymeleaf.suffix=.html#设置编码集spring.thymeleaf.encoding=UTF-8spring.thymeleaf.content-type=text/html

 

 

spring.datasource.jdbcUrl=jdbc\:mysql\://localhost\:3306/springboot?useUnicode\=true&characterEncoding\=utf8&zeroDateTimeBehavior\=convertToNullspring.datasource.user=springbootspring.datasource.password=oyh1203spring.datasource.driverClass=com.mysql.jdbc.Driverspring.datasource.initialPoolSize=5spring.datasource.minPoolSize=2spring.datasource.maxPoolSize=100spring.datasource.checkoutTimeout=10000spring.thymeleaf.cache=falsespring.thymeleaf.prefix=classpath\:/static/spring.thymeleaf.suffix=.htmlspring.thymeleaf.encoding=UTF-8spring.thymeleaf.content-type=text/html

application.propertiesapplication.propertiesapplication.properties