开始尝试从0写一个项目--后端（三）

器材管理

和员工管理基本一致，就不赘述，展示代码为主

新增器材

表设计：

字段名	数据类型	说明	备注
id	bigint	主键	自增
name	varchar(32)	器材名字
img	varchar(255)	图片
number	BIGINT	器材数量
comment	VARCHAR(99)	器材描述
status	Int	器材状态	1正常 0锁定
create_time	Datetime	创建时间
update_time	datetime	最后修改时间	借走/归还
create_user	bigint	创建人id
update_user	bigint	最后修改人id	借走或者归还

sql语句

CREATE TABLE equipment (id BIGINT AUTO_INCREMENT PRIMARY KEY,  -- 自增主键name VARCHAR(32) NOT NULL,  -- 器材名字，不允许为空number BIGINT NOT NULL default 1,  -- 器材数量:默认为1comment VARCHAR(99) , -- 器材描述status INT NOT NULL DEFAULT 1,  -- 器材状态，默认为1（正常），0表示锁定create_time DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,  -- 创建时间，默认为当前时间update_time DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,  -- 最后修改时间，默认为当前时间，并在每次更新时自动更新create_user BIGINT NOT NULL,  -- 创建人id，不允许为空update_user BIGINT NOT NULL,  -- 最后修改人id，不允许为空FOREIGN KEY (create_user) REFERENCES student(id),FOREIGN KEY (update_user) REFERENCES student(id)
-- 注意：这里假设create_user和update_user是用户ID，您需要确保这些ID在相应的用户表中存在
);
INSERT INTO equipment VALUES (1,'篮球',10,'这是篮球',1,'2024-07-12','2024-07-12',1,1);ALTER TABLE equipment ADD COLUMN img VARCHAR(255);

接口设计

请求路径：/admin/equipment

请求方式：POST

请求参数：Headers："Content-Type": "application/json"

请求体：Body：

id；name，img, number，comment；

返回数据：code；data；msg

代码开发

实体类

创建数据库的器材的封装实体类

sems-pojo/src/main/java/com/ljc/entity/Equipment.java

package com.ljc.entity;import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;import java.io.Serializable;
import java.security.SecureRandom;
import java.time.LocalDateTime;@Data
@Builder  //可是使用builder方式来定义数据
@NoArgsConstructor  //无参构造器
@AllArgsConstructor  //有参构造器
public class Equipment implements Serializable {private static final long serialVersionUID = 1L;//告诉Java虚拟机（JVM）这个类的对象是可以被序列化的。private Long id;private String name;//图片private String img;//器材数量private Long number;//器材描述private String comment;private Integer status;private LocalDateTime createTime;private LocalDateTime updateTime;private Long createUser;private Long updateUser;}

接收前端的数据，创建实体类DTO

sems-pojo/src/main/java/com/ljc/dto/EquipmentDTO.java

package com.ljc.dto;import lombok.Data;import java.io.Serializable;@Data
public class EquipmentDTO implements Serializable {//器材idprivate Long id;//器材名字private String name;//图片private String img;//器材数量private Long number;//器材描述private String comment;
}

controller

sems-server/src/main/java/com/ljc/controller/admin/EquipmentController.java

package com.ljc.controller.admin;import com.ljc.dto.EquipmentDTO;
import com.ljc.result.Result;
import com.ljc.service.EquipmentService;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
@RequestMapping("/admin/equipment")
@Slf4j
public class EquipmentController {@Autowiredprivate EquipmentService equipmentService;/*** 新增器材* @param equipmentDTO* @return*/@PostMapping@ApiOperation("新增器材")public Result save(EquipmentDTO equipmentDTO){log.info("新增器材：{}", equipmentDTO);equipmentService.save(equipmentDTO);return Result.success();}
}

service

sems-server/src/main/java/com/ljc/service/EquipmentService.java

package com.ljc.service;import com.ljc.dto.EquipmentDTO;public interface EquipmentService {/*** 新增器材* @param equipmentDTO*/void save(EquipmentDTO equipmentDTO);
}

serviceImpl

sems-server/src/main/java/com/ljc/service/impl/EquipmentServiceImpl.java

package com.ljc.service.impl;import com.ljc.constant.StatusConstant;
import com.ljc.context.BaseContext;
import com.ljc.dto.EquipmentDTO;
import com.ljc.entity.Equipment;
import com.ljc.mapper.EquipmentMapper;
import com.ljc.service.EquipmentService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import java.time.LocalDateTime;@Service
public class EquipmentServiceImpl implements EquipmentService {@Autowiredprivate EquipmentMapper equipmentMapper;/*** 新增器材* @param equipmentDTO*/@Overridepublic void save(EquipmentDTO equipmentDTO) {//1. 先创建一个器材实体类Equipment equipment = new Equipment();//2. 将DTO数据copy到实体类去BeanUtils.copyProperties(equipmentDTO,equipment);//2.1 补充其余数据//状态：默认为1；equipment.setStatus(StatusConstant.ENABLE);//修改时间equipment.setCreateTime(LocalDateTime.now());equipment.setUpdateTime(LocalDateTime.now());//创建/修改人idequipment.setCreateUser(BaseContext.getCurrentId());equipment.setUpdateUser(BaseContext.getCurrentId());//3. 调用mapper层查询数据库equipmentMapper.insert(equipment);}
}

mapper

sems-server/src/main/java/com/ljc/mapper/EquipmentMapper.java

package com.ljc.mapper;import com.ljc.entity.Equipment;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;@Mapper
public interface EquipmentMapper {/*** 新增器材* @param equipment*/@Insert("insert into equipment (name, img,status,number,comment, create_time, update_time, create_user, update_user)" +"VALUES " +"(#{name},#{img},#{status},#{number},#{comment},#{createTime},#{updateTime},#{createUser},#{updateUser})")void insert(Equipment equipment);
}

测试

//图片后面解决，使用OSS云存储

器材分页查询

接口设计

请求路径：/admin/equipment/page

请求方式：GET

请求参数: name, page, pageSize；

返回数据：code；msg ;data:total,records;

controller层

sems-server/src/main/java/com/ljc/controller/admin/EquipmentController.java

/*** 器材分页查询* @param equipmentPageQueryDTO* @return*/@GetMapping("/page")@ApiOperation("器材分页查询")public Result<PageResult> page(EquipmentPageQueryDTO equipmentPageQueryDTO){log.info("器材分页查询：{}",equipmentPageQueryDTO);PageResult pageResult = equipmentService.page(equipmentPageQueryDTO);return Result.success(pageResult);}

service层

sems-server/src/main/java/com/ljc/service/EquipmentService.java

/*** 器材分页查询* @param equipmentPageQueryDTO* @return*/PageResult page(EquipmentPageQueryDTO equipmentPageQueryDTO);

serviceImpl层

sems-server/src/main/java/com/ljc/service/impl/EquipmentServiceImpl.java

/*** 器材分页查询* @param equipmentPageQueryDTO* @return*/@Overridepublic PageResult page(EquipmentPageQueryDTO equipmentPageQueryDTO) {PageHelper.startPage(equipmentPageQueryDTO.getPage(),equipmentPageQueryDTO.getPageSize());Page<Equipment> page = equipmentMapper.page(equipmentPageQueryDTO);long total = page.getTotal();List<Equipment> records = page.getResult();return new PageResult(total,records);}

mapper层

sems-server/src/main/java/com/ljc/mapper/EquipmentMapper.java

/*** 器材分页查询* @param equipmentPageQueryDTO* @return*/Page<Equipment> page(EquipmentPageQueryDTO equipmentPageQueryDTO);

sems-server/src/main/resources/mapper/EquipmentMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.ljc.mapper.EquipmentMapper"><!--器材分页查询--><select id="page" resultType="com.ljc.entity.Equipment">select * from equipment<where><if test="name != null and name != ''">and name like concat('%',#{name},'%')</if></where>order by create_time desc</select>
</mapper>

测试

禁用启用器材

接口设计

请求路径：/admin/equipment/status/{status}

请求方式：POST

请求参数：application/json

路径参数:status

query:id

返回数据：code；data；msg

代码设计

controller

sems-server/src/main/java/com/ljc/controller/admin/EquipmentController.java

/*** 禁用启用器材* @param status* @param id* @return*/@PostMapping("/status/{status}")@ApiOperation("禁用启用器材")public Result startOrStopEquipmentStatus(@PathVariable Integer status,Long id){log.info("禁用启用器材...");equipmentService.startOrStopStatus(status,id);return Result.success();}

service和impl层

sems-server/src/main/java/com/ljc/service/EquipmentService.java

/*** 禁用启用器材* @param status* @param id*/void startOrStopStatus(Integer status, Long id);

sems-server/src/main/java/com/ljc/service/impl/EquipmentServiceImpl.java

/*** 禁用启用器材* @param status* @param id*/@Overridepublic void startOrStopStatus(Integer status, Long id) {Equipment equipment = Equipment.builder().id(id).status(status).build();equipmentMapper.update(equipment);}

mapper层

sems-server/src/main/java/com/ljc/mapper/EquipmentMapper.java

/*** 修改器材表* @param equipment*/void update(Equipment equipment);

sems-server/src/main/resources/mapper/EquipmentMapper.xml

<!--修改--><update id="update">update equipment<set><if test="name != null">name = #{name},</if><if test="img != null">img = #{img},</if><if test="number != null">number = #{number},</if><if test="comment != null">comment = #{comment},</if><if test="status != null">status = #{status},</if><if test="updateTime != null">update_Time = #{updateTime},</if><if test="updateUser != null">update_User = #{updateUser},</if></set>where id = #{id}</update>

测试

编辑器材信息

接口设计

根据id查询学生

请求路径：/admin/equipment/{id}

请求方法：GET

请求参数：id

返回数据：code；msg；data(equipment类)

编辑学生信息

请求路径：/admin/equipment

请求方法：PUT

请求参数：Headers：application/json

Body：id,name,img,number,comment,status

返回数据：code；msg；data

代码开发

controller

sems-server/src/main/java/com/ljc/controller/admin/EquipmentController.java

/*** 根据id查询器材信息* @param id* @return*/@GetMapping("{id}")@ApiOperation("根据id查询器材信息")public Result<Equipment> getById(@PathVariable Integer id){log.info("根据id查询器材信息....");Equipment equipment = equipmentService.getById(id);return Result.success(equipment);}/*** 修改器材信息* @param equipmentDTO* @return*/@PutMapping@ApiOperation("修改器材信息")public Result updateEquipmentInfo(@RequestBody EquipmentDTO equipmentDTO){log.info("修改器材信息...");equipmentService.updateEquipmentInfo(equipmentDTO);return Result.success();}

service

sems-server/src/main/java/com/ljc/service/EquipmentService.java

/*** 根据id查询信息* @param id* @return*/Equipment getById(Integer id);/*** 修改器材信息* @param equipmentDTO*/void updateEquipmentInfo(EquipmentDTO equipmentDTO);

sems-server/src/main/java/com/ljc/service/impl/EquipmentServiceImpl.java

 /*** 根据id查询信息* @param id* @return*/@Overridepublic Equipment getById(Integer id) {return equipmentMapper.getById(id);}/*** 修改器材信息* @param equipmentDTO*/@Overridepublic void updateEquipmentInfo(EquipmentDTO equipmentDTO) {Equipment equipment = new Equipment();BeanUtils.copyProperties(equipmentDTO,equipment);equipment.setUpdateUser(BaseContext.getCurrentId());equipment.setUpdateTime(LocalDateTime.now());equipmentMapper.update(equipment);}

mapper

sems-server/src/main/java/com/ljc/mapper/EquipmentMapper.java

/*** 根据id查找员工信息* @param id* @return*/@Select("select * from equipment where id = #{id}")Equipment getById(Integer id);/*** 修改器材表* @param equipment*/void update(Equipment equipment);

测试

完整代码

controller

sems-server/src/main/java/com/ljc/controller/admin/EquipmentController.java

package com.ljc.controller.admin;import com.ljc.dto.EquipmentDTO;
import com.ljc.dto.EquipmentPageQueryDTO;
import com.ljc.entity.Equipment;
import com.ljc.result.PageResult;
import com.ljc.result.Result;
import com.ljc.service.EquipmentService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;@RestController
@RequestMapping("/admin/equipment")
@Slf4j
@Api(tags = "器材管理")
public class EquipmentController {@Autowiredprivate EquipmentService equipmentService;/*** 新增器材* @param equipmentDTO* @return*/@PostMapping@ApiOperation("新增器材")public Result save(@RequestBody EquipmentDTO equipmentDTO){log.info("新增器材：{}", equipmentDTO);equipmentService.save(equipmentDTO);return Result.success();}/*** 器材分页查询* @param equipmentPageQueryDTO* @return*/@GetMapping("/page")@ApiOperation("器材分页查询")public Result<PageResult> page(EquipmentPageQueryDTO equipmentPageQueryDTO){log.info("器材分页查询：{}",equipmentPageQueryDTO);PageResult pageResult = equipmentService.page(equipmentPageQueryDTO);return Result.success(pageResult);}/*** 禁用启用器材* @param status* @param id* @return*/@PostMapping("/status/{status}")@ApiOperation("禁用启用器材")public Result startOrStopEquipmentStatus(@PathVariable Integer status,Long id){log.info("禁用启用器材...");equipmentService.startOrStopStatus(status,id);return Result.success();}/*** 根据id查询器材信息* @param id* @return*/@GetMapping("{id}")@ApiOperation("根据id查询器材信息")public Result<Equipment> getById(@PathVariable Integer id){log.info("根据id查询器材信息....");Equipment equipment = equipmentService.getById(id);return Result.success(equipment);}/*** 修改器材信息* @param equipmentDTO* @return*/@PutMapping@ApiOperation("修改器材信息")public Result updateEquipmentInfo(@RequestBody EquipmentDTO equipmentDTO){log.info("修改器材信息...");equipmentService.updateEquipmentInfo(equipmentDTO);return Result.success();}}

service

sems-server/src/main/java/com/ljc/service/EquipmentService.java

package com.ljc.service;import com.ljc.dto.EquipmentDTO;
import com.ljc.dto.EquipmentPageQueryDTO;
import com.ljc.entity.Equipment;
import com.ljc.result.PageResult;public interface EquipmentService {/*** 新增器材* @param equipmentDTO*/void save(EquipmentDTO equipmentDTO);/*** 器材分页查询* @param equipmentPageQueryDTO* @return*/PageResult page(EquipmentPageQueryDTO equipmentPageQueryDTO);/*** 禁用启用器材* @param status* @param id*/void startOrStopStatus(Integer status, Long id);/*** 根据id查询信息* @param id* @return*/Equipment getById(Integer id);/*** 修改器材信息* @param equipmentDTO*/void updateEquipmentInfo(EquipmentDTO equipmentDTO);
}

sems-server/src/main/java/com/ljc/service/impl/EquipmentServiceImpl.java

package com.ljc.service.impl;import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.ljc.constant.StatusConstant;
import com.ljc.context.BaseContext;
import com.ljc.dto.EquipmentDTO;
import com.ljc.dto.EquipmentPageQueryDTO;
import com.ljc.entity.Equipment;
import com.ljc.mapper.EquipmentMapper;
import com.ljc.result.PageResult;
import com.ljc.service.EquipmentService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import java.time.LocalDateTime;
import java.util.List;@Service
public class EquipmentServiceImpl implements EquipmentService {@Autowiredprivate EquipmentMapper equipmentMapper;/*** 新增器材* @param equipmentDTO*/@Overridepublic void save(EquipmentDTO equipmentDTO) {//1. 先创建一个器材实体类Equipment equipment = new Equipment();//2. 将DTO数据copy到实体类去BeanUtils.copyProperties(equipmentDTO,equipment);//2.1 补充其余数据//状态：默认为1；equipment.setStatus(StatusConstant.ENABLE);//修改时间equipment.setCreateTime(LocalDateTime.now());equipment.setUpdateTime(LocalDateTime.now());//创建/修改人idequipment.setCreateUser(BaseContext.getCurrentId());equipment.setUpdateUser(BaseContext.getCurrentId());//3. 调用mapper层查询数据库equipmentMapper.insert(equipment);}/*** 器材分页查询* @param equipmentPageQueryDTO* @return*/@Overridepublic PageResult page(EquipmentPageQueryDTO equipmentPageQueryDTO) {PageHelper.startPage(equipmentPageQueryDTO.getPage(),equipmentPageQueryDTO.getPageSize());Page<Equipment> page = equipmentMapper.page(equipmentPageQueryDTO);long total = page.getTotal();List<Equipment> records = page.getResult();return new PageResult(total,records);}/*** 禁用启用器材* @param status* @param id*/@Overridepublic void startOrStopStatus(Integer status, Long id) {Equipment equipment = Equipment.builder().id(id).status(status).build();equipmentMapper.update(equipment);}/*** 根据id查询信息* @param id* @return*/@Overridepublic Equipment getById(Integer id) {return equipmentMapper.getById(id);}/*** 修改器材信息* @param equipmentDTO*/@Overridepublic void updateEquipmentInfo(EquipmentDTO equipmentDTO) {Equipment equipment = new Equipment();BeanUtils.copyProperties(equipmentDTO,equipment);equipment.setUpdateUser(BaseContext.getCurrentId());equipment.setUpdateTime(LocalDateTime.now());equipmentMapper.update(equipment);}
}

mapper

sems-server/src/main/java/com/ljc/mapper/EquipmentMapper.java

package com.ljc.mapper;import com.github.pagehelper.Page;
import com.ljc.dto.EquipmentPageQueryDTO;
import com.ljc.entity.Equipment;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;@Mapper
public interface EquipmentMapper {/*** 新增器材* @param equipment*/@Insert("insert into equipment (name, img,status,number,comment, create_time, update_time, create_user, update_user)" +"VALUES " +"(#{name},#{img},#{status},#{number},#{comment},#{createTime},#{updateTime},#{createUser},#{updateUser})")void insert(Equipment equipment);/*** 器材分页查询* @param equipmentPageQueryDTO* @return*/Page<Equipment> page(EquipmentPageQueryDTO equipmentPageQueryDTO);/*** 根据id查找员工信息* @param id* @return*/@Select("select * from equipment where id = #{id}")Equipment getById(Integer id);/*** 修改器材表* @param equipment*/void update(Equipment equipment);
}

sems-server/src/main/resources/mapper/EquipmentMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.ljc.mapper.EquipmentMapper"><!--修改--><update id="update">update equipment<set><if test="name != null">name = #{name},</if><if test="img != null">img = #{img},</if><if test="number != null">number = #{number},</if><if test="comment != null">comment = #{comment},</if><if test="status != null">status = #{status},</if><if test="updateTime != null">update_Time = #{updateTime},</if><if test="updateUser != null">update_User = #{updateUser},</if></set>where id = #{id}</update><!--器材分页查询--><select id="page" resultType="com.ljc.entity.Equipment">select * from equipment<where><if test="name != null and name != ''">and name like concat('%',#{name},'%')</if></where>order by create_time desc</select>
</mapper>

OSS云上传图片

实现步骤：

1). 定义OSS相关配置

sems-server/src/main/resources/application.yml

server:port: 8080spring:profiles:active: devmain:allow-circular-references: truedatasource:druid:driver-class-name: ${ljc.datasource.driver-class-name}url: jdbc:mysql://${ljc.datasource.host}:${ljc.datasource.port}/${ljc.datasource.database}?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&useSSL=false&allowPublicKeyRetrieval=trueusername: ${ljc.datasource.username}password: ${ljc.datasource.password}mybatis:#mapper配置文件mapper-locations: classpath:mapper/*.xmltype-aliases-package: com.ljc.entityconfiguration:#开启驼峰命名map-underscore-to-camel-case: truelogging:level:com:sky:mapper: debugservice: infocontroller: infoljc:jwt:# 设置jwt签名加密时使用的秘钥admin-secret-key: kussm# 设置jwt过期时间admin-ttl: 7200000# 设置前端传递过来的令牌名称admin-token-name: tokenalioss:bucket-name: ${ljc.alioss.bucket-name}access-key-secret: ${ljc.alioss.access-key-secret}access-key-id: ${ljc.alioss.access-key-id}endpoint: ${ljc.alioss.endpoint}

sems-server/src/main/resources/application-dev.yml

ljc:datasource:driver-class-name: com.mysql.cj.jdbc.Driverhost: localhostport: 3306database: semsusername: rootpassword: 8888alioss:endpoint: oss-cn-hangzhou.aliyuncs.comaccess-key-id: LTAI5tBt5pkXempSC5vPAocuaccess-key-secret: XDMFmdEjA6c8Tl5a4xCg4dF4avoJtMbucket-name: kussmcx

2). 读取OSS配置

sems-common/src/main/java/com/ljc/properties/AliOssProperties.java

package com.ljc.properties;import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;@Component
@ConfigurationProperties(prefix = "ljc.alioss")
@Data
public class AliOssProperties {private String endpoint;private String accessKeyId;private String accessKeySecret;private String bucketName;}

3). 生成OSS工具类对象

sems-server/src/main/java/com/ljc/config/OssConfiguration.java

package com.ljc.config;import com.ljc.properties.AliOssProperties;
import com.ljc.utils.AliOssUtil;
import com.ljc.utils.AliOssUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Configuration//配置类特有的注释
@Slf4j
public class OssConfiguration {@Bean@ConditionalOnMissingBeanpublic AliOssUtil aliOssUtil(AliOssProperties aliOssProperties){log.info("开始创建阿里云文件上传工具类对象：{}",aliOssProperties);return new AliOssUtil(aliOssProperties.getEndpoint(),aliOssProperties.getAccessKeyId(),aliOssProperties.getAccessKeySecret(),aliOssProperties.getBucketName());}
}

其中sems-common/src/main/java/com/ljc/utils/AliOssUtil.java

package com.ljc.utils;import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;import java.io.ByteArrayInputStream;@Data
@AllArgsConstructor
@Slf4j
public class AliOssUtil {private String endpoint;private String accessKeyId;private String accessKeySecret;private String bucketName;/*** 文件上传** @param bytes* @param objectName* @return*/public String upload(byte[] bytes, String objectName) {// 创建OSSClient实例。OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);try {// 创建PutObject请求。ossClient.putObject(bucketName, objectName, new ByteArrayInputStream(bytes));} catch (OSSException oe) {System.out.println("Caught an OSSException, which means your request made it to OSS, "+ "but was rejected with an error response for some reason.");System.out.println("Error Message:" + oe.getErrorMessage());System.out.println("Error Code:" + oe.getErrorCode());System.out.println("Request ID:" + oe.getRequestId());System.out.println("Host ID:" + oe.getHostId());} catch (ClientException ce) {System.out.println("Caught an ClientException, which means the client encountered "+ "a serious internal problem while trying to communicate with OSS, "+ "such as not being able to access the network.");System.out.println("Error Message:" + ce.getMessage());} finally {if (ossClient != null) {ossClient.shutdown();}}//文件访问路径规则 https://BucketName.Endpoint/ObjectNameStringBuilder stringBuilder = new StringBuilder("https://");stringBuilder.append(bucketName).append(".").append(endpoint).append("/").append(objectName);log.info("文件上传到:{}", stringBuilder.toString());return stringBuilder.toString();}
}

4). 定义文件上传接口

在sems-server/src/main/java/com/ljc/controller/admin/CommonController.java

package com.ljc.controller.admin;import com.ljc.utils.AliOssUtil;
import com.ljc.constant.MessageConstant;
import com.ljc.result.Result;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;import java.io.IOException;
import java.util.UUID;/*** 通用接口，上传文件（图片）*/
@RestController
@RequestMapping("/admin/common")
@Slf4j
@Api(tags = "通用接口")
public class CommonController {@Autowiredprivate AliOssUtil aliOssUtil;@ApiOperation("文件上传")@PostMapping("/upload")public Result<String> upload(MultipartFile file){log.info("文件上传：{}" + file);try {//objectname使用UUID来生成//1.获取原始文件名称String originalFilename = file.getOriginalFilename();//2.截取文件的后缀String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));//获取文件.之后的部分//3.构建新文件名称String newFilename = UUID.randomUUID().toString() + suffix;String filePash =  aliOssUtil.upload(file.getBytes(), newFilename);//调用upload的方法return Result.success(filePash);//调用aliossUtil修改后的数据，这样才能将访问路劲改为oss云的；} catch (IOException e) {log.info(MessageConstant.UPLOAD_FAILED + e);}return Result.error(MessageConstant.UPLOAD_FAILED);//文件上传失败的常量；}}