intellij idea + spring boot + mybatis + druid + maven + mysql + thymeleaf

我的天，csdn编辑器是有毒吗，按了删除键会网页后退，写了很长一篇的东西又白写了

这篇和上一个差不多，只是把data jpa换成了 mybatis ，

csdn编辑器这尿性，懒得写太多说明了，直接贴代码

目录结构

pom.xml   (加了com.github.pagehelper用来分页查询)

<?xml version="1.0" encoding="UTF-8"?>
<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>me.cc</groupId>
	<artifactId>hgcenter</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>hgcenter</name>
	<description>Demo project for Spring Boot</description>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.4.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.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>1.3.0</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-thymeleaf</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-configuration-processor</artifactId>
			<optional>true</optional>
		</dependency>

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
		</dependency>

		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.0.28</version>
		</dependency>

		<dependency>
			<groupId>net.sourceforge.nekohtml</groupId>
			<artifactId>nekohtml</artifactId>
			<version>1.9.22</version>
		</dependency>

		<dependency>
			<groupId>com.github.pagehelper</groupId>
			<artifactId>pagehelper</artifactId>
			<version>4.1.0</version>
		</dependency>

	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>


</project>

application.properties

#加入这个是为了让thymeleaf语法检查不那么严格，方便写html
spring.thymeleaf.mode = LEGACYHTML5
#开发阶段，模板不要缓存数据，设为false，否则每次改html都要重启项目
spring.thymeleaf.cache = false

spring.jpa.database: MYSQL
# 数据库访问配置
# 主数据源，默认的
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/hgwxm?useUnicode=true&characterEncoding=utf-8
spring.datasource.username=root
spring.datasource.password=

# 下面为连接池的补充设置，应用到上面所有数据源中
spring.jpa.show-sql = true

# 下面为连接池的补充设置，应用到上面所有数据源中
# 初始化大小，最小，最大
spring.datasource.druid.initialSize=5
spring.datasource.druid.minIdle=5
spring.datasource.druid.maxActive=20
# 配置获取连接等待超时的时间
spring.datasource.druid.maxWait=60000
# 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
spring.datasource.druid.timeBetweenEvictionRunsMillis=60000
# 配置一个连接在池中最小生存的时间，单位是毫秒
spring.datasource.druid.minEvictableIdleTimeMillis=300000
spring.datasource.druid.validationQuery=SELECT 1 FROM t_user
spring.datasource.druid.testWhileIdle=true
spring.datasource.druid.testOnBorrow=true
spring.datasource.druid.testOnReturn=false
# 打开PSCache，并且指定每个连接上PSCache的大小
spring.datasource.druid.poolPreparedStatements=true
spring.datasource.druid.maxPoolPreparedStatementPerConnectionSize=20
# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
spring.datasource.druid.filters=stat,wall,log4j
# 通过connectProperties属性来打开mergeSql功能；慢SQL记录
spring.datasource.druid.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
# 合并多个DruidDataSource的监控数据
#spring.datasource.druid.useGlobalDataSourceStat=true

mybatis配置,  参考了  http://blog.csdn.net/catoop/article/details/50553714

package me.cc.Configuration;

import java.util.Properties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.github.pagehelper.PageHelper;

@Configuration
public class MyBatisConfiguration {

    private static final Logger logger = LoggerFactory.getLogger(MyBatisConfiguration.class);

    @Bean
    public PageHelper pageHelper() {
        logger.info("注册MyBatis分页插件PageHelper");
        PageHelper pageHelper = new PageHelper();
        Properties p = new Properties();
        p.setProperty("offsetAsPageNum", "true");
        p.setProperty("rowBoundsWithCount", "true");
        p.setProperty("reasonable", "true");
        pageHelper.setProperties(p);
        return pageHelper;
    }

}

实体，实例 Site

package me.cc.enity;

import java.io.Serializable;
import java.util.Date;

public class Site implements Serializable {

    int id;
    String account;
    String name;
    String pass;

mapper，实例  SiteMapper

使用了注解的方式，不用再配置xml，参考  https://github.com/mybatis/mybatis-spring-boot

package me.cc.mapper;

import com.github.pagehelper.Page;
import me.cc.enity.Site;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;

@Repository
@Mapper
public interface SiteMapper {
    @Select("select * from site where id = #{id}")
    Site findById(@Param("id") int id);

    @Select("select * from site")
    Page<Site> findAll();


}

使用实例

@Controller
public class HomeController {

    @Autowired
    SiteMapper siteMapper;

    @RequestMapping("/")
    @ResponseBody
    Object home(){
        Site site = siteMapper.findById(1200);

        PageHelper.startPage(1, 3);
        Page<Site> page = siteMapper.findAll();

        return page.toPageInfo();
    }
}