spring boot和mybatis整合

maven的依赖配置

<!-- spring boot 版本号 -->  <parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.3.0.RELEASE</version></parent><!-- 依赖 --><dependencies><!-- spring boot web包  包含Spring MVC/SLF4j/Jackson/Hibernate Validator等依赖 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><!-- 不使用默认的默认的日志框架 Logback --><exclusions><exclusion><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-logging</artifactId></exclusion></exclusions></dependency><!-- 支持freemarker作为模板引擎 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-freemarker</artifactId></dependency><!-- 支持使用jdbc访问数据库 --><!-- <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jdbc</artifactId></dependency> --><!-- 支持log4j --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-log4j</artifactId></dependency><!-- 支持aop编程  包含spring-aop 和  AspectJ --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-aop</artifactId></dependency><!-- 包含常用的测试所需的依赖，如 JUnit、Hamcrest、Mockito 和 spring-test 等。 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId></dependency><!-- 自动应用代码更改到最新的App上面(热部署) --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><optional>true</optional></dependency><!-- 使用tomcat作为服务器 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-tomcat</artifactId><scope>provided</scope></dependency><!-- redis依赖 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-redis</artifactId></dependency><!-- mybatis依赖 --><dependency>    <groupId>org.mybatis.spring.boot</groupId>    <artifactId>mybatis-spring-boot-starter</artifactId>    <version>1.0.0</version></dependency><!-- 其他依赖 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.28</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><executions><execution><goals><goal>repackage</goal></goals></execution></executions></plugin></plugins></build>

mysql驱动哪儿会提示一个5.1.37版本的驱动被覆盖,当我不配置这个依赖的时候,项目会提示找不到mysql的驱动,这个我不确定是什么原因.

我的依赖并不是最简依赖,是我找到的一个比较全的配置,并且有注解,可以根据自己的需求进行删减.

application.yml的配置文件   此配置文件需要放在classpath目录下

# Server settings  server:      port: 8080      address: localhost    contextPath: /boot-mybatis  # SPRING PROFILES  spring:             # HTTP ENCODING      http:          encoding.charset: UTF-8          encoding.enable: true          encoding.force: true      datasource:          url: jdbc:mysql://***.***.***.***:3306/test?useUnicode=true&characterEncoding=utf-8          username: ***        password: ***        max-active: 100        max-idle: 10        min-idle: 5

mybatis-config.xml的配置

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE configuration        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"        "http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration>    <typeAliases>        <package name="com.liutong.application.domain"/>    </typeAliases>    <mappers>        <mapper resource="com/liutong/application/dao/UserDao.xml" />    </mappers></configuration>

这儿有个注意的地方是,我的mapper.xml虽然放置在了src/main/resources下,但是路径是和Dao的接口在同一目录下,而且名字也是相同的.

实体类

package com.liutong.application.domain;public class User {private Long id;private String username;private String password;public Long getId() {return id;}public void setId(Long id) {this.id = id;}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}@Overridepublic String toString() {return "User [id=" + id + ", username=" + username + ", password="+ password + "]";}}

UserDao的Mapper

<?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.liutong.application.dao.UserDao">  <resultMap type="com.liutong.application.domain.User" id="User"><id property="id" column="id" javaType="java.lang.Long"/>  <result property="username" column="username" javaType="java.lang.String"/><result property="password" column="password" javaType="java.lang.String"/></resultMap><select id="queryUserById"  parameterType="java.lang.Integer" resultMap="User">select id,username,password from user<where>id = #{id}</where></select></mapper>

Dao实现类

package com.liutong.application.dao.impl;import org.mybatis.spring.SqlSessionTemplate;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Repository;import com.liutong.application.dao.UserDao;import com.liutong.application.domain.User;@Repositorypublic class UserDaoImpl implements UserDao{@Autowiredprivate SqlSessionTemplate sqlSessionTemplate;public User queryUserById(Long id){return sqlSessionTemplate.selectOne("queryUserById",id);}}

最重要的Application类

package com.liutong.application;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.EnableAutoConfiguration;import org.springframework.context.annotation.Configuration;@Configuration@EnableAutoConfiguration public class Application {public static void main(String[] args) {          SpringApplication.run(Application.class, args);  }}

我能想到的,需要放上来的就都放上来了,为了怕有些遗漏,我把整个demo也打包上传了,链接在后面

链接在这儿