demo01:基于 SpringMVC 的用户管理系统

发布于：2025-07-05 ⋅ 阅读:(13) ⋅ 点赞:(0)

要求：1.数据库需创建 users 表，包含 id、username、email、password 字段
     2.实现用户的增删改查功能
     3.添加用户登录认证功能
     4.实现密码加密存储
     5.编写controller接口，验证用户管理功能

实现后端功能即可，用apifox进行接口检验

数据库准备

CREATE TABLE users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(50) NOT NULL,
    email VARCHAR(100) NOT NULL,
    password VARCHAR(255) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

pom依赖准备

  <properties> 
    <maven.compiler.source>11</maven.compiler.source>
    <maven.compiler.target>11</maven.compiler.target>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
  </properties>

  <dependencies>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>

    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.security</groupId>
      <artifactId>spring-security-crypto</artifactId>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
    </dependency>
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.security</groupId>
      <artifactId>spring-security-crypto</artifactId>
      <version>5.6.8</version>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.tomcat.maven</groupId>
        <artifactId>tomcat7-maven-plugin</artifactId>
        <version>2.1</version>
        <configuration>
          <port>8080</port>
          <path>/</path>
        </configuration>
      </plugin>
    </plugins>
  </build>

创建框架

 配置类编写

有SpringConfig\MybatisConfig\JdbcConfig\SpringMvcConfig\ServletConfig

@Configuration
@ComponentScan({"com.ywh.service"})
@PropertySource("classpath:jdbc.properties")
@Import({JdbcConfig.class,MybatisConfig.class})
public class SpringConfig {
    @Bean
    public BCryptPasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }  //密码加密用的
}
public class MybatisConfig {
    @Bean
    public SqlSessionFactoryBean sqlSessionFactory(DataSource dataSource){
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        factoryBean.setDataSource(dataSource);
        factoryBean.setTypeAliasesPackage("com.ywh.pojo");//别名包
        Configuration configuration = new Configuration();
        configuration.setMapUnderscoreToCamelCase(true); //驼峰映射
        factoryBean.setConfiguration(configuration);
        return factoryBean;
    }

    @Bean
    public MapperScannerConfigurer mapperScannerConfigurer(){
        MapperScannerConfigurer msc = new MapperScannerConfigurer();
        msc.setBasePackage("com.ywh.dao");
        return msc;
    }
}
public class JdbcConfig {
    @Value("${jdbc.driver}")
    private String driver;
    @Value("${jdbc.url}")
    private String url;
    @Value("${jdbc.username}")
    private String username;
    @Value("${jdbc.password}")
    private String password;

    @Bean
    public DataSource dataSource(){
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setDriverClassName(driver);
        dataSource.setUrl(url);
        dataSource.setUsername(username);
        dataSource.setPassword(password);
        return dataSource;
    }

}
@Configuration
@ComponentScan("com.ywh.controller")
@EnableWebMvc
public class SpringMvcConfig {
}
public class ServletConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
    //加载Spring配置类
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{SpringConfig.class};
    }
    //加载SpringMVC配置类
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{SpringMvcConfig.class};
    }
    //设置SpringMVC请求地址拦截规则
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
    //设置post请求中文乱码过滤器
    @Override
    protected Filter[] getServletFilters() {
        CharacterEncodingFilter filter = new CharacterEncodingFilter();
        filter.setEncoding("utf-8");
        return new Filter[]{filter};
    }
}

并编写jdbc.properties

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/shixun?useUnicode=true&characterEncoding=utf8&useSSL=false
jdbc.username=root
jdbc.password=123456

pojo

@Data
@EqualsAndHashCode(callSuper = false)
@NoArgsConstructor
@AllArgsConstructor
public class Users {
    private Integer id;
    private String username;
    private String email;
    private String password;
    private Date createdAt;
    private Date updatedAt;
}

dao

@Mapper
public interface UserDao {

    // 插入用户（返回自增ID）
    @Insert("INSERT INTO users(username, email, password, created_at, updated_at) " +
            "VALUES(#{username}, #{email}, #{password}, NOW(), NOW())")
    @Options(useGeneratedKeys = true, keyProperty = "id")
    int insertUser(Users user);

    // 根据ID删除用户
    @Delete("DELETE FROM users WHERE id = #{id}")
    int deleteById(@Param("id") Integer id);

    // 更新用户信息
    @Update("UPDATE users SET username=#{username}, email=#{email}, updated_at=NOW() WHERE id=#{id}")
    int updateUser(Users users);



    // 根据用户名查询用户（用于登录验证）
    @Select("SELECT * FROM users WHERE username = #{username}")
    Users selectByUsername(@Param("username") String username);

}

Service

public interface UserService {
    int register(Users user);

    // 删除用户
    int deleteUser(Integer id);

    // 更新用户信息
    int updateUser(Users user);



    // 用户登录验证
    Users login(String username, String password);

    // 根据用户名查询用户
    Users getUserByUsername(String username);
}
@Service
public class UserServiceImpl implements UserService {


    @Autowired
    private  UserDao userDao;
    @Autowired
    private  BCryptPasswordEncoder passwordEncoder;


    @Override
    public int register(Users user) {
        // 检查用户名是否已存在
        if (userDao.selectByUsername(user.getUsername()) != null) {
            throw new RuntimeException("用户名已存在");
        }
        // 加密密码
        String encodedPassword = passwordEncoder.encode(user.getPassword());
        user.setPassword(encodedPassword);
        return userDao.insertUser(user);
    }

    @Override
    public int deleteUser(Integer id) {
        return userDao.deleteById(id);
    }

    @Override
    public int updateUser(Users user) {
        // 更新时不修改密码
        user.setPassword(null);
        return userDao.updateUser(user);
    }


    @Override
    public Users login(String username, String password) {
        if (!StringUtils.hasText(username) || !StringUtils.hasText(password)) {
            throw new RuntimeException("用户名和密码不能为空");
        }
        Users user = userDao.selectByUsername(username);
        if (user == null) {
            throw new RuntimeException("用户不存在");
        }
        // 验证密码
        if (!passwordEncoder.matches(password, user.getPassword())) {
            throw new RuntimeException("密码错误");
        }

        return user;
    }

    @Override
    public Users getUserByUsername(String username) {
        return userDao.selectByUsername(username);
    }


}

Controller 

@RestController
@RequestMapping("/users")
public class UserController {

    @Autowired
    private UserService userService;

    @PostMapping("/register")
    public ResponseEntity<?> registerUser(@RequestBody Users user) {
            int result = userService.register(user);
            Map<String, Object> map = new HashMap<>();
            map.put("user",user);
            if (result > 0) {
                map.put("message", "注册成功");
                return ResponseEntity.ok(map);
            }
            map.put("message", "注册失败");
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
                    .body(map);
    }

    @PostMapping("/login")
    public ResponseEntity<?> loginUser(@RequestBody Users user) {
        Map<String, Object> map = new HashMap<>();
        map.put("user",user);
            Users user1 = userService.login(user.getUsername(), user.getPassword());
            if (user1 != null) {
                map.put("message", "登录成功");
                return ResponseEntity.ok(map);
            }
            else
            map.put("message", "登录失败");
            return ResponseEntity.status(HttpStatus.UNAUTHORIZED)
                    .body(map);
    }


    @PostMapping("update")
    public ResponseEntity<?> updateUser( @RequestBody Users user) {
        Map<String, Object> map = new HashMap<>();
        map.put("user",user);
        int result = userService.updateUser(user);
        if (result > 0) {
            map.put("message", "用户更新成功");
            return ResponseEntity.ok(map);
        }
        map.put("message", "用户更新失败");
        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
                .body(map);
    }

    @GetMapping("delete/{id}")
    public ResponseEntity<?> deleteUser(@PathVariable Integer id) {
        Map<String, Object> map = new HashMap<>();
        int result = userService.deleteUser(id);
        if (result > 0) {
            map.put("message", "用户删除成功");
            return ResponseEntity.ok(map);
        }
        map.put("message", "用户删除失败");
        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
                .body(map);
    }

    @GetMapping("select/{username}")
    public ResponseEntity<?> getUserByUsername(@PathVariable String username) {
        Map<String, Object> map = new HashMap<>();
            Users user = userService.getUserByUsername(username);
            if (user != null) {
                map.put("user",user);
                return ResponseEntity.ok(map);
            }
            map.put("message", "用户不存在");
            return ResponseEntity.status(HttpStatus.NOT_FOUND)
                    .body(map);
        }
}

测试接口

编辑运行环境

然后使用Apifox进行接口测试

先注册用户 

然后登录用户

更新普通信息，根据id来更新

根据用户名查询用户

 删除用户

总结

     其实这个demo的有些逻辑并不是非常合理，主要是自己动手体验一下mvc的架构,并且多熟悉一下其中的注解和配置，我争取后续的demo中业务逻辑更加的完善一些 

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