SpringBoot+mybatis入门

 

检查maven插件

http://maven.apache.org/download.cgi

设置自己的maven地址

 

@RestController

表示接受前台请求

首次未设置pom中的 mybatis可以先注释其中的依赖部分

然后 import changes  即可

访问8080/hello  即可

package com.hzp.demo;


import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class hello {
    @RequestMapping(value="/hello",method=RequestMethod.GET)
    public String hello(){
        return "rrr";
    }
}

修改端口号

server.context-path=/demo

必须加/demo/hello才能访问

使用sequel pro

 

 

CREATE TABLE tb_area (

area_id int(2) NOT NULL auto_increment,

area_name varchar(200) NOT NULL,

priority int(2) NOT NULL DEFAULT'0',

create_time datetime DEFAULT NULL,

last_edit_time datetime DEFAULT NULL,

PRIMARY KEY(area_id),

UNIQUE KEY UK_AREA(area_name)

)ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

option+enter

 

自动提示倒入类

 

 

 

control+ N

为所有成员变量增加 getter  setter 方法

现在取消pom中mybatis的注释

加入

    mysql
    mysql-connector-java

因为之前设置了mysql表

    com.mchange
    c3p0
    0.9.5.2

加入多线程处理 线程池

option+command 或者 option +回车 设置红字

设置config.dao的包

设置链接数据库的代码

package com.hzp.demo.config.dao;

import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.springframework.context.annotation.Bean;

import java.beans.PropertyVetoException;

public class DateSourceConfiguration {
    private String jdbcDriver;
    private String jdbcUrl;
    private String jdbcUsername;
    private String jdbcPassword;

    @Bean(name = "dataSource")
    public ComboPooledDataSource createDateSource() throws PropertyVetoException {
        ComboPooledDataSource dataSource=new ComboPooledDataSource();
        dataSource.setDriverClass(jdbcDriver);
        dataSource.setJdbcUrl(jdbcUrl);
        dataSource.setUser(jdbcUsername);
        dataSource.setPassword(jdbcPassword);
        //关闭链接后不自动提交
        dataSource.setAutoCommitOnClose(false);
        return dataSource;
    }
}

写入

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/dbName?useUnicode=true&characterEncoding=utf8&useSSL=false
jdbc.username=root
jdbc.password=root

 

同样在datasourceconfig引入变量  在前面加入 @Value("jdbc.$")

@Configuration

@Value("jdbc.driver")
private String jdbcDriver;
@Value("jdbc.url")
private String jdbcUrl;
@Value("jdbc.username")
private String jdbcUsername;
@Value("jdbc.password")
private String jdbcPassword;

 

/usr/local/opt/[email protected]/bin/mysql.server start

 

　　启动完成后,打开终端

　　alias mysql=/usr/local/mysql/bin/mysql

　　alias mysqladmin=/usr/local/mysql/bin/mysqladmin

mysqladmin -u root -p password root123

package com.hzp.demo.config.dao;

import org.mybatis.spring.SqlSessionFactoryBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;
import java.io.IOException;

@Configuration
public class SessionFactoryConfiguration {

    @Value("${mybatis_config_file}")
    private String mybatisConfigFilePath;
    @Value("${mapperPath}")
    private String mapperPath;
    @Value("${entity_package}")

    private String entityPackage;

    @Autowired
    @Qualifier("dataSource")
    private DataSource dataSource;

    @Bean("name=sqlSessionFactory")
    public SqlSessionFactoryBean createSqlSessionFactoryBean() throws IOException {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setConfigLocation(new ClassPathResource(mybatisConfigFilePath));
        PathMatchingResourcePatternResolver resolver=  new PathMatchingResourcePatternResolver();
        String packageSearchPath=PathMatchingResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + mapperPath;
        sqlSessionFactoryBean.setMapperLocations(resolver.getResources(packageSearchPath));
        sqlSessionFactoryBean.setDataSource(dataSource);
        sqlSessionFactoryBean.setTypeAliasesPackage(entityPackage);

        return sqlSessionFactoryBean;
    }
}

#mybatis
mybatis_config_file=mybatis-config.xml
mapper_path=/mapper/**.xml
entity_package=com.hzp.demo.entity

package com.hzp.demo.dao;


import com.hzp.demo.entity.Area;

import java.util.List;

public interface AreaDao {
    List queryArea();
    Area queryAreaById(int areaId);
    int insertArea(Area area);
    int updateArea(Area area);
    int deleteArea(Area areaId);

}