修改自述文件

.github/workflows/ci.yaml

@@ -0,0 +1,24 @@
+name: picture_api
+
+on: [push]
+
+jobs:
+    deploy:
+        runs-on: ubuntu-latest
+        steps:
+            - name: 检出代码
+              uses: actions/checkout@v2
+            - name: 设置Docker Buildx
+              uses: docker/setup-buildx-action@v1
+            - name: 构建镜像
+              run: |
+                  docker build -t picture_api -f ./dockerfile .
+            - name: 导出镜像
+              run: |
+                  docker save picture_api | gzip > picture_api.tar.gz
+            - name: 上传镜像
+              uses: actions/upload-artifact@v2
+              with:
+                  name: picture_api
+                  path: picture_api.tar.gz
+

dockerfile

@@ -1,5 +1,5 @@
  # 使用官方 Node.js 16 版本的镜像作为基础镜像
-FROM node:16
+FROM node:18
 
 # 设置工作目录,容器内所有后续命令都在这个目录中进行
 WORKDIR /usr/src/app

readme.md

@@ -0,0 +1,18 @@
+## 随机图片
+> GET /v1/images
+
+返回数据：
+
+**type：Buffer**
+
+![本地图片](./demo.jpg)
+
+## 指定图片
+> GET /v1/images/:id
+
+返回数据：
+
+**type：Buffer**
+
+![本地图片](./demo.jpg)
+

src/image/image.controller.ts

@@ -14,11 +14,18 @@ import { IdPipe } from './image.pipe';
 export class ImageController {
     constructor(private readonly imageService: ImageService) {}
 
+    @Get('/')
+    @Header('Content-Type', 'image/jpeg')
+    @Header('Content-Disposition', 'inline')
+    async getImages(): Promise<any> {
+        return new StreamableFile(await this.imageService.getImages());
+    }
+
     @Get(':id')
     @UsePipes(IdPipe)
     @Header('Content-Type', 'image/jpeg')
     @Header('Content-Disposition', 'inline')
     async reqGetImage(@Param('id') id: IdDto): Promise<any> {
-        return new StreamableFile(await this.imageService.getImage(id));
+        return new StreamableFile(await this.imageService.getImageById(id));
     }
 }

src/image/image.service.ts

@@ -1,6 +1,7 @@
-import { HttpException, HttpStatus, Inject, Injectable } from '@nestjs/common';
+import { Inject, Injectable } from '@nestjs/common';
 import { Sequelize } from 'sequelize-typescript';
 import { IdDto } from './dto/image.dto';
+import { Image } from './entities/image.entity';
 
 @Injectable()
 export class ImageService {
@@ -9,16 +10,22 @@ export class ImageService {
         private readonly sequelize: Sequelize,
     ) {}
 
-    async getImage(id: IdDto): Promise<Buffer> {
+    async getImages(): Promise<any> {
+        const allImages: Image[] =
+            (await this.sequelize.models.Image.findAll()) as Image[];
+        const randomIndex: number = Math.floor(
+            Math.random() * allImages.length,
+        );
+        const randomImage: Image = allImages[randomIndex];
+        return randomImage.image;
+    }
+
+    async getImageById(id: IdDto): Promise<any> {
         const image: any = await this.sequelize.models.Image.findOne({
             where: {
                 id,
             },
         });
-        if (image.dataValues.image) {
-            return image.dataValues.image;
-        } else {
-            throw new HttpException('图片未找到', HttpStatus.NOT_FOUND);
-        }
+        return image.image;
     }
 }