SpringBoot入門-17(springboot集成mybatis註解形式增刪查改properties配置)

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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_2</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>springboot_mybatis_12_2 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 ，這裏我們使用jdk 1.8 ,默認是1.6 -->
		<java.version>1.8</java.version>
	</properties>
	<dependencies>
		<!-- 添加fastjson 依賴包. -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.2.15</version>
		</dependency>
		<!-- spring-boot-starter-web: MVC,AOP的依賴包.... -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
			<!-- <version></version> 由於我們在上面指定了 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數據庫驅動依賴包. -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
		</dependency>
		
		<!-- spring-boot mybatis依賴： 請不要使用1.0.0版本，因爲還不支持攔截器插件， 1.1.1 是博主寫帖子時候的版本，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提供了攔截器接口，我們可以實現自己的攔截器，
    	將其作爲一個plugin裝入到SqlSessionFactory中。 
		Github上有位開發者寫了一個分頁插件，我覺得使用起來還可以，挺方便的。 
		Github項目地址： 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_2</finalName>
		<plugins>
			<!-- 這是spring boot devtool plugin (推薦) -->
			<!--fork : 如果沒有該項配置，肯呢個devtools不會起作用，即應用不會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、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")
public class App {

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

}

四、Cat.java

package com.fs;

public class Cat {

    private int    id;
    private String cat_name;
    private int    cat_age;

    public int getId() {
        return id;
    }

    public void setId(int 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;
    }
}

五、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("/save")
    public Cat save(Cat cat) {
        int rs = catService.save(cat);
        System.out.println("=======ok======" + rs);
        return cat;
    }

    @RequestMapping("/update")
    public int update(Cat cat) {
        int rs = catService.update(cat);
        return rs;
    }

    @RequestMapping("/delete")
    public int delete(int id) {
        int rs = catService.delete(id);
        return rs;
    }

    @RequestMapping("/select")
    public List<Cat> selectAll() {
        List<Cat> list = catService.selectAll();
        return list;
    }
}

六、CatService.java

package com.fs;

import java.util.List;

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

@Service
public class CatService {

    @Autowired
    private CatMapper catMapper;

    @Transactional // 添加事務.
    public int save(Cat cat) {
        return catMapper.save(cat);
    }

    public int update(Cat cat) {
        return catMapper.update(cat);
    }

    public int delete(int id) {
        return catMapper.delete(id);
    }

    public List<Cat> selectAll() {
        return catMapper.selectAll();
    }
}

七、CatMapper.java

package com.fs;

import java.util.List;

import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Options;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;

@Mapper
public interface CatMapper {

    @Insert("insert into cat(cat_name,cat_age) values (#{cat_name},#{cat_age})")
    @Options(useGeneratedKeys = true, keyProperty = "id", keyColumn = "id") // id自動增長
    public int save(Cat cat);

    @Update("update cat set cat_name = #{cat_name} where id = #{id}")
    public int update(Cat cat);

    @Delete("delete from cat where id = #{id}")
    public int delete(int id);

    @Select("select * from cat")
    public List<Cat> selectAll();
}