SpringBoot入门-16(springboot集成mybatis注解形式)

系列教程都是从网络上收集和本人的理解所编辑而成，仅供广大爱好者学习所用，请尊重本人的劳动成果。欢迎评论指正和转帖！（请保留连接谢谢！）

一、POM.XML

<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/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.fs</groupId>
	<artifactId>springboot_mybatis_12</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>springboot_mybatis_12 Maven Webapp</name>
	<url>http://maven.apache.org</url>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.4.1.RELEASE</version>
	</parent>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<!-- 指定一下jdk的版本 ，这里我们使用jdk 1.8 ,默认是1.6 -->
		<java.version>1.8</java.version>
	</properties>
	<dependencies>
		<!-- 添加fastjson 依赖包. -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.2.15</version>
		</dependency>
		<!-- spring-boot-starter-web: MVC,AOP的依赖包.... -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
			<!-- <version></version> 由于我们在上面指定了 parent(spring boot) -->
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
			<optional>true</optional>
			<scope>true</scope>
		</dependency>

		<!-- 添加MySQL数据库驱动依赖包. -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
		</dependency>
		
		<!-- spring-boot mybatis依赖： 请不要使用1.0.0版本，因为还不支持拦截器插件， 1.1.1 是博主写帖子时候的版本，大家使用最新版本即可 -->
		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>1.1.1</version>
		</dependency>
		
		<!-- 
    	MyBatis提供了拦截器接口，我们可以实现自己的拦截器，
    	将其作为一个plugin装入到SqlSessionFactory中。 
		Github上有位开发者写了一个分页插件，我觉得使用起来还可以，挺方便的。 
		Github项目地址： https://github.com/pagehelper/Mybatis-PageHelper
     -->	
	    <dependency>
		    <groupId>com.github.pagehelper</groupId>
		    <artifactId>pagehelper</artifactId>
		    <version>4.1.0</version>
		</dependency>	
		
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>
	</dependencies>
	<build>
		<finalName>springboot_mybatis_12</finalName>
		<plugins>
			<!-- 这是spring boot devtool plugin (推荐) -->
			<!--fork : 如果没有该项配置，肯呢个devtools不会起作用，即应用不会restart -->
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<configuration>
					<fork>true</fork>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

二、application.properties

########################################################
###datasource -- \u6307\u5b9amysql\u6570\u636e\u5e93\u8fde\u63a5\u4fe1\u606f.
########################################################
spring.datasource.url = jdbc:mysql://localhost:3306/springboot_test
spring.datasource.username = root
spring.datasource.password = fengsi
spring.datasource.driverClassName = com.mysql.jdbc.Driver
spring.datasource.max-active=20
spring.datasource.max-idle=8
spring.datasource.min-idle=8
spring.datasource.initial-size=10

三、CatController.java

package com.fs;

import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class CatController {

    @Autowired
    private CatService catService;

    @RequestMapping("/likeName")
    public List<Cat> likeName(String name) {
        return catService.likeName(name);
    }
}

四、CatService.java

package com.fs;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CatService {

    @Autowired
    private CatMappper catMappper;

    public List<Cat> likeName(String name) {
        return catMappper.likeName(name);
    }
}

五、CatMappper.java

package com.fs;

import java.util.List;

import org.apache.ibatis.annotations.Select;

public interface CatMappper {

    // #{name}:参数占位符
    @Select("select * from cat where cat_name=#{cat_name}")
    public List<Cat> likeName(String cat_name);

    @Select("select * from cat where id = #{id}")
    public Cat getById(int id);

    @Select("select name from cat where id = #{id}")
    public String getNameById(int id);
}

六、Cat.java

package com.fs;

public class Cat {
     public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getCat_name() {
        return cat_name;
    }

    public void setCat_name(String cat_name) {
        this.cat_name = cat_name;
    }

    public int getCat_age() {
        return cat_age;
    }

    public void setCat_age(int cat_age) {
        this.cat_age = cat_age;
    }

    private long   id;
    private String cat_name;
    private int    cat_age;
}

七、App.java

package com.fs;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@MapperScan("com.fs") // 扫描：该包下相应的class,主要是MyBatis的持久化类.
public class App {

    public static void main(String[] args) {
        SpringApplication.run(App.class, args);
    }

}