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URL
spring.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-8
spring.thymeleaf.content-type=text/html

 

 

spring.datasource.jdbcUrl=jdbc\:mysql\://localhost\:3306/springboot?useUnicode\=true&characterEncoding\=utf8&zeroDateTimeBehavior\=convertToNull
spring.datasource.user=springboot
spring.datasource.password=oyh1203
spring.datasource.driverClass=com.mysql.jdbc.Driver
spring.datasource.initialPoolSize=5
spring.datasource.minPoolSize=2
spring.datasource.maxPoolSize=100
spring.datasource.checkoutTimeout=10000
spring.thymeleaf.cache=false
spring.thymeleaf.prefix=classpath\:/static/
spring.thymeleaf.suffix=.html
spring.thymeleaf.encoding=UTF-8
spring.thymeleaf.content-type=text/html

application.propertiesapplication.propertiesapplication.properties