SpringBoot+Mybatis-Plus+Mysql的保姆级搭建

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <optional>true</optional>
</dependency>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

<dependency>
 <groupId>com.baomidou</groupId>
 <artifactId>mybatis-plus-boot-starter</artifactId>
 <version>3.0.5</version>
</dependency>
<dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>8.0.33</version>
</dependency>

@GetMapping("/byName")
public String add(String name){
    if(StringUtils.isEmpty(name)){
        throw new RuntimeException("查询name不得为空");
    }
    User user = user1Mapper.selectOne(new LambdaQueryWrapper<User>().eq(User::getName, name));
    if(user==null)
        return "查询无果";
    return user.getName()+":"+user.getAmount();
}