前言:
真花了两天时间,基础太差了,也没什么算法基础,虽然也不需要什么算法...
顺道记录一下得了,小白太难了...
使用工具:
IDEA以及内置MYSQL语言数据库
Apifox(postman也行,就前端测试工具都行)
注意事项:
我使用的分层解耦:对这个没有了解的参考另一篇:
分层解耦复习
参考:
maven项目pom文件依赖参考:
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>3.2.1</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.example</groupId> <artifactId>TianyiDemo</artifactId> <version>0.0.1-SNAPSHOT</version> <name>TianyiDemo</name> <description>TianyiDemo</description> <properties> <java.version>17</java.version> </properties> <dependencies> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>3.0.3</version> </dependency> <dependency> <groupId>com.mysql</groupId> <artifactId>mysql-connector-j</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <!-- <scope>test</scope>--> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <!-- <scope>test</scope>--> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter-test</artifactId> <version>3.0.3</version> <!-- <scope>test</scope>--> </dependency> <!-- <dependency>--> <!-- <groupId>org.springframework.boot</groupId>--> <!-- <artifactId>spring-boot-starter-web</artifactId>--> <!-- </dependency>--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>6.1.1</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>6.1.1</version> </dependency> <dependency> <groupId>io.leopard.boot</groupId> <artifactId>leopard-boot-requestmapping</artifactId> <version>0.9.20</version> </dependency> <dependency> <groupId>io.leopard.boot</groupId> <artifactId>leopard-boot-requestmapping</artifactId> <version>0.9.20</version> </dependency> <dependency> <groupId>io.leopard.boot</groupId> <artifactId>leopard-boot-requestmapping</artifactId> <version>0.9.20</version> </dependency> <dependency> <groupId>io.leopard.boot</groupId> <artifactId>leopard-boot-requestmapping</artifactId> <version>0.9.20</version> </dependency> <dependency> <groupId>io.leopard.boot</groupId> <artifactId>leopard-boot-requestmapping</artifactId> <version>0.9.20</version> </dependency> <dependency> <groupId>io.leopard.boot</groupId> <artifactId>leopard-boot-requestmapping</artifactId> <version>0.9.20</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <excludes> <exclude> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </exclude> </excludes> </configuration> </plugin> </plugins> </build> </project>
涉及数据库表及字段:
Circle表:
Section表:
实体类参考:
Cricle:
Section:
Result:(返回统一响应格式,更加便捷,可以不需要)
项目结构参考:
Controller层
Controller层:接受get请求,调用服务层getSAC方法,并且返回为Result统一响应格式
Service层
Service层:仅声明方法
实现层
Service层中的实现层:
使用MApper的getSectionAndCircle方法获取数据填充Section实体类,使用for循环,循环获取Section中的id,并且给到Mapper的getSectionID的方法中,且得到getBySectionID方法的数据并且赋值到circle实体类,最后由setter方法赋值回Section实体类中的List集合声明。
Mapper层
Mapper层:
第一个方法实现Section数据查询
第二个方法实现使用接受,服务层传来的SectionID进行查询
Apifox前端测试
成功解决传输
尾言
在查询的时候发现很多是使用MYbaits的xml映射文件进行数据映射填充,这个真不知道怎么弄,有会的大佬,麻烦评论一下...QAQ
好像映射了就不用mapper来注解sql语句了..具体还是不清楚