【个人实习日志】Springboot项目创建

Springboot项目创建

一、spring项目的创建
File->New->Project
选择Spring Initializr以后选择custom http://start.aliyun.com/点击Next

java版本选择8

依赖web中选择Spring Web,sql中选择MyBatis Framework和Mysql Driver点击next下一步点击finish



二、spring项目的配置
Maven仓库配置
File->settings->Build->Maven
将maven路径改为下载的Maven,repository改为本地仓库

将配置文件改为application.yml，配置数据库信息

三、项目测试
文件目录：

（一）bean包中新建User实体类
User.java

package com.wzx.bean;

public class User {
    public User() {
    }

    public User(int id, String username, String password) {
        this.id = id;
        this.username = username;
        this.password = password;
    }

    private int id;
    private String username;
    private String password;

    public int getId() {
        return id;
    }

    public void setId(int 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;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

（二）dao包中新建UserDao
UserDao.java

package com.wzx.dao;

import com.wzx.bean.User;
import org.apache.ibatis.annotations.Mapper;

import java.util.List;

@Mapper
public interface UserDao {
    List<User> findAll();
}

（三）service包中新建UserService
UserService.java

package com.wzx.service;

import com.wzx.bean.User;
import com.wzx.dao.UserDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserService {
    @Autowired
    private UserDao userDao;

    public List<User> findAll(){
        return userDao.findAll();
    }

}

(四）controller包中新建HelloSpringboot
HelloSpringboot.java

package com.wzx.service;

import com.wzx.bean.User;
import com.wzx.dao.UserDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserService {
    @Autowired
    private UserDao userDao;

    public List<User> findAll(){
        return userDao.findAll();
    }

}

(五）启动类
Springboot3Application.java

package com.wzx;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Springboot3Application {
    public static void main(String[] args) {
        SpringApplication.run(Springboot3Application.class,args);
    }
}

(六）resource下新建mapper包，在mapper包中新建UserMapper.xml
UserMapper.xml

<?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.wzx.dao.UserDao">
    <select id="findAll" resultType="user">
        select * from tb_user
    </select>

</mapper>

(七）配置文件
porm.xml

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>springboot3</artifactId>
    <version>1.0-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.3</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.37</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>



</project>

四、运行展示