Spring Boot项目创建(约定大于配置)
2.1.3.RELEASE版本示例
- idea创建
- 从官网下载(https://start.spring.io/)
- 单元测试默认依赖不对时,直接删除即可
Web支持(SpringMVC)
XML
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
模板引擎Thymleaf 整合
XML
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
XML
spring:
thymeleaf:
cache: false # 关闭缓存,默认开启
prefix: classpath:/pages/ #修改默认路径 classpath:/templates/
Mybatis 整合
添加依赖【刷新Maven】
XML
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
配置文件修改=> yml(yaml) / properties
XML
spring:
datasource:
url: jdbc:mysql://localhost:3306/qcby_db?useUnicode=true&characterEncoding=utf-8
username: root
password:
driver-class-name: com.mysql.cj.jdbc.Driver
mybatis:
mapper-locations: classpath:mapper/*.xml #对应mapper映射xml文件所在路径
type-aliases-package: com.xxxx.entity #对应实体类路径
启动类修改
java
// 启动类修改
@MapperScan("com.xxxx.mapper")
@SpringBootApplication
测试
XML
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.yglh.mapper.TestMapper">
<resultMap id="BaseResultMap" type="com.qcbt.lxt.byg0417.entity.Test">
<id column="id" jdbcType="BIGINT" property="id" />
<result column="name" jdbcType="VARCHAR" property="name" />
</resultMap>
<sql id="Base_Column_List">
id,name
</sql>
</mapper>
PageHelper 分页插件整合
需要注意和mybatis-spring-boot-starter的版本关系。
添加依赖
XML
<!--pageHelper分页插件-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.3.0</version>
</dependency>
配置 => properties / yml
XML
pagehelper:
helperDialect: mysql
reasonable: true # 修改默认值
- reasonable:分页合理化参数,默认值为false。当该参数设置为 true 时,pageNumpages(超过总数时),会查询最后一页。默认false 时,直接根据参数进行查询。
示例
java
Page<Object> page = PageHelper
.startPage(logInfoVo.getPage(), logInfoVo.getLimit());