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  • springboot添加操作

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    Mybaits技术连接数据库

    resources

    #update tomcat port
    server.port=8888
    
    #config datasource(mysql)
    spring.datasource.driver-class-name=com.mysql.jdbc.Driver
    spring.datasource.url=jdbc:mysql:///springboot
    spring.datasource.username=root
    spring.datasource.password=秘密
    
    #config mybatis xml
    mybatis.mapper-location=classpath:mapping/*.xml
    mybatis.type-aliases-package=cn.java.entit     

    创建数据库

    DDL信息

    Create Table
    
    CREATE TABLE `foods` (
      `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键',
      `food_name` varchar(40) DEFAULT NULL COMMENT '食品名',
      `food_taste` varchar(2) DEFAULT NULL COMMENT '食品口味 1香辣 2微辣 3麻辣 4不辣',
      `food_price` float(10,2) DEFAULT NULL COMMENT '食品价格',
      `food_description` varchar(200) DEFAULT NULL COMMENT '食品描述',
      PRIMARY KEY (`id`)
    ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8


    INSERT INTO foods(food_name,food_taste,food_price,food_description) VALUES('鱼香肉丝','1',18.5,'很好吃'); 

    DAO层

    实体类    cn.java.entity       Food.java

    package cn.java.entity;
    
    import lombok.Getter;
    import lombok.Setter;
    import lombok.ToString;
    
    @Getter
    @Setter
    @ToString
    public class Food {
        private Long id;
        private String foodName;
        private String foodTaste;
        private Float foodPrice;
        private String foodDescription;
    }

    映射mapper    cn.java.mapper  FoodMaper.java

    package cn.java.mapper;
    
    import cn.java.entity.Food;
    import org.apache.ibatis.annotations.Insert;
    
    /*
    增删改返回值为数字  所以设置int
    食品  添加数据  DAO层完成
     */
    public interface FoodMapper {
        @Insert("INSERT INTO foods(food_name,food_taste,food_price,food_description) VALUES(#{foodName},#{foodTaste},#{foodPrice},#{foodDescription})")
        int addFood(Food food);
    }

       业务层

    cn.java.service     FoodService.java  接口

    package cn.java.service;

    import cn.java.entity.Food;

    /*
    添加食品
    */
    public interface FoodService {
    boolean saveFood(Food food);
    }

      实现类  cn.java.service.impl    FoodServiceImpl   实现接口 FoodService

    package cn.java.service.impl;

    import cn.java.entity.Food;
    import cn.java.mapper.FoodMapper;
    import cn.java.service.FoodService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;

    @Service
    public class FoodServiceImpl implements FoodService {
    @Autowired
    private FoodMapper foodMapper;
    @Override
    public boolean saveFood(Food food) {
    return foodMapper.addFood(food) >=1 ? true : false; //业务方法 若是项目记者校验数据格式
    }
    }

    控制层

    cn.java.controller

    FoodController.java

    package cn.java.controller;

    import cn.java.service.FoodService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    import cn.java.entity.Food;
    /*
    添加食品 项目开发 多添加注释
    */
    @Controller //添加@Controller 才是一个Controller
    public class FoodController {
    @Autowired
    private FoodService foodService;
    @RequestMapping("/insertFood.do") //添加虚拟路径
    @ResponseBody
    public boolean insertFood(Food food) {
    return foodService.saveFood(food);
    }

    }

     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>springboot2</groupId>
        <artifactId>dingpeng_springboot2</artifactId>
        <packaging>war</packaging>
        <version>0.0.1-SNAPSHOT</version>
        <name>dingpeng_springboot2 Maven Webapp</name>
        <url>http://maven.apache.org</url>
    
    
        <!-- 配置 spring boot 所需的依赖包 -->
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.10.RELEASE</version>
    
        </parent>
    
        <dependencies>
            <!-- springboot 相关启动 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <!-- spring boot热部署 为开发者提供了一个名为spring-boot-devtools的模块来使用Spring boot 应用支持热部署 
                提高开发者的开发效率无需手动重启Spring boot 应用 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
                <optional>true</optional>
            </dependency>
    
            <!-- log4j -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-log4j2</artifactId>
            </dependency>
    
            <!-- 使用Jasper 引擎解析JSP -->
            <dependency>
                <groupId>org.apache.tomcat.embed</groupId>
                <artifactId>tomcat-embed-jasper</artifactId>
                <scope>provided</scope>
            </dependency>
    
            <!-- JSP 支持 -->
            <!-- servlet 依赖 -->
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>javax.servlet-api</artifactId>
                <scope>provided</scope>
            </dependency>
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jstl</artifactId>
            </dependency>
    
            <!-- spring boot 整合mybatis -->
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>1.3.0</version>
            </dependency>
            <!-- MYSQL -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
            </dependency>
    
            <!-- lombok -->
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.16.16</version>
                <scope>provided</scope>
            </dependency>
    
    
            <!-- 加入p6spy的依赖 -->
            <!-- https://mvnrepository.com/artifact/p6spy/p6spy -->
            <!--<dependency>
                <groupId>p6spy</groupId>
                <artifactId>p6spy</artifactId>
                <version>2.1.4</version>
            </dependency>-->
    
            
        <!--     druid 数据库连接池
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.1.10</version>
            </dependency>-->
        </dependencies>
    
    
    
    
        <!-- 简化部署 这个插件,可将应用打包成一个可执行的jar包 -->
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <configuration>
                        <!-- 没有这个配置, devtools 不生效 -->
                        <fork>true</fork>
                    </configuration>
                </plugin>
            </plugins>
            <finalName>dingpeng_springboot2</finalName>
        </build>
    
    </project>

    使用的工具

    Postman

    结构图

     

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  • 原文地址:https://www.cnblogs.com/mzdljgz/p/10518734.html
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