图中观察需要三个接口

image

1、检查用户名是否存在

@GetMapping("checkUsername")
public Result checkUsername(String username){
if(StringUtils.isBlank(username)){
    return Result.error(CodeMsg.USERNAME_EMPTY);
}
if(usersService.checkUsername(username)){
    return Result.error(CodeMsg.USERNAME_EXIST);
}
    return Result.success();
}

2、注册

@PostMapping("register")
public Result register(@RequestBody UsersBo usersBo){
    if(StringUtils.isBlank(usersBo.getUsername())){
        return Result.error(CodeMsg.USERNAME_EMPTY);
    }
    if(StringUtils.isBlank(usersBo.getPassword())){
        return Result.error(CodeMsg.PWD_EMPTY);
    }
    if(usersBo.getPassword().length() < 6){
        return Result.error(CodeMsg.PWD_SHORT);
    }
    if(usersService.checkUsername(usersBo.getUsername())){
        return Result.error(CodeMsg.USERNAME_EXIST);
    }

    Users users = usersService.register(usersBo);
    if (users == null)
        return Result.error(CodeMsg.USERNAME_EXIST);
    return Result.success(users);
}

3、登录

@PostMapping("login")
public Result doLogin(@RequestBody UsersBo usersBo){
    Users users = usersService.doLogin(usersBo);
    if (users == null){
        return Result.error(CodeMsg.USERNAME_PWD_ERROR);
    }
    return Result.success(users);
}

4、接口文档配置

• 引入依赖

<dependency>
    <groupId>com.github.xiaoymin</groupId>
    <artifactId>knife4j-spring-boot-starter</artifactId>
    <version>3.0.2</version>
</dependency>

• 新增配置文件

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.oas.annotations.EnableOpenApi;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
@Configuration
@EnableOpenApi
public class Swagger2 {
    @Value("${swagger.enabled}")
    private Boolean enabled;

    @Bean
    public Docket createApi() {
        return new Docket(DocumentationType.OAS_30)
                .enable(enabled)
                .apiInfo(getApiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.njzy.controller"))//指定controller所在目录
                .paths(PathSelectors.any()).build();
    }

    public ApiInfo getApiInfo() {
        return new ApiInfoBuilder().title("接口文档")
                //.contact(new Contact("宁静致远","","")) //联系人
                //.description("接口文档的描述") 接口描述
                .version("1.0.0") //版本信息
                //.termsOfServiceUrl("")//网站地址
                .build();
    }
}

相关配置文件

server:
  # 访问端口号
  port: 8088
  servlet:
    context-path: /api
  tomcat:
    uri-encoding: UTF-8
  # 最大http header大小
  max-http-header-size: 80KB
  # 是否开启swagger
swagger:
  enabled: true

• 访问地址 http://localhost:8088/api/doc.html 查看文档

Controller完整代码

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
@Api(tags = "用户相关接口")
@RestController
@RequestMapping("user")
public class UsersController {
    @Autowired
    private UsersService usersService;

    /**
     * @param username 如果加了@RequestParam 没有该参数时会被拦截
     */
    @ApiOperation( "用户名是否存在")
    @GetMapping("checkUsername")
    public Result checkUsername(String username){
        if(StringUtils.isBlank(username)){
            return Result.error(CodeMsg.USERNAME_EMPTY);
        }
        if(usersService.checkUsername(username)){
            return Result.error(CodeMsg.USERNAME_EXIST);
        }
        return Result.success();
    }


    @ApiOperation( "注册")
    @PostMapping("register")
    public Result register(@RequestBody UsersBo usersBo){
        if(StringUtils.isBlank(usersBo.getUsername())){
            return Result.error(CodeMsg.USERNAME_EMPTY);
        }
        if(StringUtils.isBlank(usersBo.getPassword())){
            return Result.error(CodeMsg.PWD_EMPTY);
        }
        if(usersBo.getPassword().length() < 6){
            return Result.error(CodeMsg.PWD_SHORT);
        }
        if(usersService.checkUsername(usersBo.getUsername())){
            return Result.error(CodeMsg.USERNAME_EXIST);
        }

        Users users = usersService.register(usersBo);
        if (users == null)
            return Result.error(CodeMsg.USERNAME_EXIST);
        return Result.success(users);
    }

    @ApiOperation( "登录")
    @PostMapping("login")
    public Result doLogin(@RequestBody UsersBo usersBo){
        Users users = usersService.doLogin(usersBo);
        if (users == null){
            return Result.error(CodeMsg.USERNAME_PWD_ERROR);
        }
        return Result.success(users);
    }
}

UsersBo.java

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;

@Data
@ApiModel(value = "用户",description = "由前端传入的user")
public class UsersBo {
    /**
     * 用户名 用户名
     */
    @ApiModelProperty(value = "用户名",example = "张三",required = true)
    private String username;

    /**
     * 密码 密码
     */
    @ApiModelProperty(value = "密码(注册无需前端加密, 登录前端加密)",example = "123456",required = true)
    private String password;
}

• @Data是lombok插件 可以省略get/set方法相关依赖如下：

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <optional>true</optional>
    <version>1.18.18</version>
</dependency>

• postman 测试接口地址 http://localhost:8088/api/user/想测试的接口地址
• 文档地址展示如下：

image