HarmonyOS NEXT鸿蒙开发 ArkTS：openai 调用阿里云大模型-马育民老师

# 介绍

OpenAI 请求工具库，基本保留原 npm 库 TypeScript 定义。

### 官方API

```
https://ohpm.openharmony.cn/#/cn/detail/@iuroc%2Fopenai/v/1.0.0
```

# 安装使用

```
ohpm install @iuroc/openai
```

# 使用示例

```
import { OpenAI } from '@iuroc/openai'

const openai = new OpenAI({
    apiKey: 'sk-xxxx',
    baseURL: 'https://api.openai.com/v1'
})
const result = openai.chat.completions.create({
    model: 'gpt-4o-mini',
    messages: [
        { role: 'user', content: 'hello' }
    ]
})

const response = result.response
const session = result.session
```

### 等待请求完成

```
// Promise 方式
await response

// Callback 方式
response.then(() => {

})
```

### 终止请求

```
session.cancel()
```

# 流式输出

```
const onData: OnDataCallback = chunks => {
    const newContent = chunks.map(chunk => chunk.choices[0].delta.content).join('')
    console.log(newContent)
}

const result = openai.chat.completions.create({
    model: 'gpt-4o-mini',
    messages: [
        { role: 'user', content: 'hello' }
    ],
    stream: true
}, onData)
```

# 案例

### 安装 markdown

本例子使用第三方 **markdown** 组件，可以正常显示大模型返回的 markdown内容

安装：

```
ohpm install @luvi/lv-markdown-in
```

### 阿里百炼

api网址如下：

https://bailian.console.aliyun.com/?tab=api#/api/?type=model&url=2712576

需要注册、申请api key

### 代码

**提示：**将阿里百炼API Key填到下面 `apiKey` 中

```
import { OpenAI } from '@iuroc/openai'
import { Markdown } from '@luvi/lv-markdown-in'

const openai = new OpenAI(
  {
    // 若没有配置环境变量，请用百炼API Key将下行替换为：apiKey: "sk-xxx",
    apiKey: "",
    baseURL: "https://dashscope.aliyuncs.com/compatible-mode/v1"
  }
);

const TAG = "HealthPage-------"

@Entry
@Component
struct HealthPage {
  @State message: string = '';
  @State inputContent: string = '冬季如何补气血';
  @State btnEnabled:boolean = true;

build() {
    Column(){
      Text("我是您的健康小助手，有什么问题：")
        .width("100%")
        .margin({
          top:20
        })
      TextArea({
        text:this.inputContent
      })
        .height(100)
        .margin({
          top:5
        })
      Row() {
        Blank()
        Button("发送")
          .onClick(async () => {
            this.send()

})
          .enabled(this.btnEnabled)
      }
      .width("100%")
      .margin({
        top:10
      })
      Scroll() {
        Markdown({ text: this.message })
      }
      .margin({
        top: 10
      })
    }
    .height("70%")
    .padding({
      left:10,
      right:10,
    })
  }

async send(){
    console.log(TAG,"send 开始----------")
    this.btnEnabled = false
    const completion = openai.chat.completions.create({
      model: "qwen-plus",  //此处以qwen-plus为例，可按需更换模型名称。模型列表：https://help.aliyun.com/zh/model-studio/getting-started/models
      messages: [
        { role: "system", content: "你是养生专家" },
        { role: "user", content: this.inputContent }
      ],
    });

const resp = await completion.response
    const session = completion.session
    console.log(TAG,"send 结束----------")
    this.btnEnabled = true
    // console.log(TAG,JSON.stringify(resp))
    const json = resp.toJSON()
    if(json!=null) {
      // console.log(TAG, "json---------",json['choices'][0].message.content)
      this.message = json['choices'][0].message.content
      // console.log(TAG,"message--",this.message)
    }
  }
}

export default HealthPage
```

原文出处：http://www.malaoshi.top/show_1GW2QL9E6nnf.html