springboot整合mybatis

springboot整合mybatis

〇、搭建springbboot基础环境

一、添加依赖

<!-- mybatis -->
<dependency> <!-- 最好用最新版本 -->
	<groupId>org.mybatis.spring.boot</groupId>
	<artifactId>mybatis-spring-boot-starter</artifactId>
	<version>1.3.0</version>
</dependency>

二、配置文件（application.properties）

spring.mvc.view.prefix=/WEB-INF/
spring.mvc.view.suffix=.jsp

########################################################
###datasource
########################################################
spring.datasource.url = jdbc:mysql://localhost:3306/mine
spring.datasource.username = root
spring.datasource.password = root
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

二、pojo

import java.math.BigDecimal;
import java.util.Date;

public class Item {
	private int iid;
	private String iname;
	private BigDecimal icount;
	private String iremarks;
	private String categortys;
	private Date itime;
	
	
	public Date getItime() {
		return itime;
	}
	public void setItime(Date itime) {
		this.itime = itime;
	}
	public String getIname() {
		return iname;
	}
	public void setIname(String iname) {
		this.iname = iname;
	}
	public BigDecimal getIcount() {
		return icount;
	}
	public void setIcount(BigDecimal icount) {
		this.icount = icount;
	}
	public String getIremarks() {
		return iremarks;
	}
	public void setIremarks(String iremarks) {
		this.iremarks = iremarks;
	}
	public String getCategortys() {
		return categortys;
	}
	public void setCategortys(String categortys) {
		this.categortys = categortys;
	}
	public int getIid() {
		return iid;
	}
	public void setIid(int iid) {
		this.iid = iid;
	}
	@Override
	public String toString() {
		return "Item [iid=" + iid + ", iname=" + iname + ", icount=" + icount + ", iremarks=" + iremarks
				+ ", categortys=" + categortys + "]";
	}
}

三、Mapper

import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;

import com.xujie.pojo.Item;

@Mapper  //这个注解帮助生成mapper的一个实现类
public interface CountDao {
	
	@Insert("INSERT INTO `mine`.`item` ( `iname`, `itime`, `icount`, `iremarks`) VALUES ( #{iname}, #{itime}, #{icount}, #{iremarks});")
	void insert(Item item);
}

三、Service&&ServiceImpl

ServiceImpl

import com.xujie.pojo.Item;
public interface CountService {
	void insert(Item item);
}  

Service

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.xujie.mapper.CountDao;
import com.xujie.pojo.Item;
import com.xujie.service.CountService;

@Service
public class CountServiceImpl implements CountService {
	
	@Autowired
	private CountDao countDao;

	@Override
	public void insert(Item item) {
		this.countDao.insert(item);
	}
}

三、Controller

import java.util.Date;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import com.xujie.pojo.Item;
import com.xujie.service.CountService;

@Controller
public class CountController {
	
	@Autowired
	private CountService countService;		
	
	//添加
	@PostMapping(value="/test.action")
	public String test2(Item item) {       //这里接收一个item对象 
		item.setItime(new Date());
		this.countService.insert(item);
		return "index";    //返回到页面
	}
}

注意：省略了页面（index.jsp）的编码