目标
在清晨的代码编辑器上,一场新的挑战即将开始。程序员们肃立于安静的办公室,眼神专注地盯着屏幕,等待着编译器的一声提示。
随着编译器输出的激动人心的"start!"的提示,战斗的序幕拉开了。Bug如潮水般涌来,程序员们快速调整键盘,代码在屏幕上飞速滚动,IDE中的光标如箭一般穿梭,指引着他们找出每一个漏洞。代码的碰撞声、键盘的敲击声、鼠标的点击声交织成一曲激烈的交响乐,扣人心弦。
在这个混乱的调试中,每个程序员都展现出顶尖的技艺与冷静的勇气。他们忘我地追踪Bug,代码间的逻辑错综复杂,他们努力理清每一行代码的错误,誓言修复每一个漏洞。长时间的疲劳和思考在他们身上无处不在,但他们坚定不移,因为他们知道,这场战斗不仅仅是为了完成任务,更是为了程序的稳定与优化。
随着代码的逐步修复,胜利的曙光逐渐浮现。Bug一个个被排除,程序稳定运行,最终的"Deploy Successful!"的消息如太阳升起,标志着任务的完成和程序的成功运行。
这场战斗,不仅仅是一场技术上的挑战,更是一场耐心与智慧的考验。他们用思维与代码铸就了成功的光辉,为了项目的顺利进行,为了自己对技术的追求与信仰,他们勇敢地战斗着
开始挑战
打开idea
创建Spring项目
依赖就选springweb
创建完成首先在xml文件里配置依赖
<?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> <groupId>com.bigdata1421</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <name>demo</name> <description>demo</description> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <spring-boot.version>2.6.13</spring-boot.version> </properties> <dependencies> <!-- lombok 快速封装实体类--> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency> <!-- mybatis-plus 快速数据层开发--> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>3.4.3</version> </dependency> <!-- druid数据库连接池--> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.2.6</version> </dependency> <!-- mysql驱动--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>runtime</version> </dependency> <!-- web应用内嵌服务器--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- springboot起步依赖--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>${spring-boot.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.1</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>${spring-boot.version}</version> <configuration> <mainClass>com.example.demo.DemoApplication</mainClass> <skip>true</skip> </configuration> <executions> <execution> <id>repackage</id> <goals> <goal>repackage</goal> </goals> </execution> </executions> </plugin> </plugins> </build> </project>
接着配置数据库连接信息
server: port: 80 spring: datasource: druid: driver-class-name: com.mysql.jdbc.Driver url: jdbc:mysql://localhost:3306/mybatis?serverTimezone=UTC username: root password: 123456 # 配置mybatis-plus mybatis-plus: global-config: db—config: table-prefix: tbl_
接下来
用lombok快速封装实体类
package com.example.demo.domain; import lombok.Data; @Data public class User { private String id; private String name; private String age; private String gender; }
用Mybatis-plus开发数据层接口
package com.example.demo.dao; import com.baomidou.mybatisplus.core.mapper.BaseMapper; import com.example.demo.domain.User; import org.apache.ibatis.annotations.Mapper; @Mapper public interface UserDao extends BaseMapper<User> { }
开发业务层
面向接口编程
先在接口定义了五个方法
package com.example.demo.service; import com.example.demo.domain.User; import java.util.List; public interface UserService { public boolean save(User user); public User getById(Integer id); public boolean update(User user); public boolean delete(Integer id); public List<User> getAll(); }
书写实现类
在注入数据层接口的同时
重写业务层方法
package com.example.demo.service.impl; import com.example.demo.dao.UserDao; import com.example.demo.domain.User; import com.example.demo.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class UserServiceImpl implements UserService { @Autowired private UserDao userDao; @Override public User getById(Integer id) { return userDao.selectById(id); } @Override public boolean save(User user) { return userDao.insert(user)>0; } @Override public boolean update(User user) { return userDao.updateById(user)>0; } @Override public boolean delete(Integer id) { return userDao.deleteById(id)>0; } @Override public List<User> getAll() { return userDao.selectList(null); } }
创建控制器
controller层MVC类
与前端页面进行交互
package com.example.demo.controller; import com.example.demo.domain.User; import com.example.demo.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; import java.util.List; @RestController @RequestMapping("/users") public class UserController { //注入业务层 @Autowired private UserService userService; //规定请求方式 @GetMapping public List<User> getAll(){ return userService.getAll(); } @PostMapping public Boolean save(@RequestBody User user){ return userService.save(user); } @PutMapping public Boolean update(@RequestBody User user){ return userService.update(user); } @DeleteMapping("{id}") public Boolean delete(@PathVariable Integer id){ return userService.delete(id); } @GetMapping("{id}") public User getById(@PathVariable Integer id){ return userService.getById(id); } }
这样一个基本的框架就已经完成
我们把springboot项目启动起来
我们这时候到postman里
发起请求 去进行一个查询
成功查询
挑战成功
耗时4分49秒!