接入 deepseek 实现AI智能问诊

1. 准备工作

注册 DeepSeek 账号
- 前往 DeepSeek 官网注册账号并获取 API Key。
创建 UniApp 项目
- 使用 HBuilderX 创建一个新的 UniApp 项目（选择 Vue3 或 Vue2 模板）。
安装依赖
- 如果需要在 UniApp 中使用 HTTP 请求，推荐使用 uni.request（UniApp 内置）或 axios（需额外安装）。

2. 实现代码

2.1 在 `pages/index/index.vue` 中实现问诊功能

<template><view class="container"><!-- <view class="nav"><image src="../../static/images/back.png" @tap="toMenu"></image><text>问医生</text></view> --><statement ref="dialog"></statement><view class="chat_area" id="test" ref="chatbox"><view class="current_time" v-show="chatList.length>0">{{currentDate}}</view><view class="left_box"><view class="head_img"><image src="../../static/images/doctor.png"></image></view><view class="content_box"><view class="content post"><view>我是您的AI医生小迦，很高兴为您解答。</view><view>您可以这样问我：</view><view class="post_request"><view v-for="(item,index) in postRequest" :key="index"><text class="active" @click="tapQuestion(item)">{{item.id}}.{{item.text}}</text></view></view><!-- <u-read-more showHeight="200"><rich-text :nodes="item.msg"></rich-text></u-read-more> --><!-- {{item.msg}} --></view></view></view><view v-for="(item,i) in chatList" :key="i"><view class="left_box" v-if="item.role == 'assistant'"><view class="head_img"><image src="../../static/images/doctor.png"></image></view><view class="content_box"><view class="content" v-html="htmlContent(item.content)"><!-- <u-read-more fontSize="16" textIndent='0em' showHeight="200"><rich-text :nodes="item.msg"></rich-text></u-read-more> --></view></view></view><view class="right_box" v-if="item.role == 'user'"><view class="content_box"><view class="content" >{{item.content}}</view></view><view class="head_img"><image :src="userImg==''?nullImg:userImg"></image></view></view></view><u-loading-icon text="小迦正在思考中..." textSize="16" :show="showLoading"></u-loading-icon></view><view class="input_tab"><view class="statement">成都XXXX科技有限责任公司&copy<text @tap="exemptStatement">免责声明</text></view><view class="input_com"><view class="left"><image src="../../static/images/HOT.png"></image><input placeholder="请输入问题" v-model.trim="userQuesion" cursor-spacing="30rpx"></input></view><view class="send_btn" @tap="sendMsg">发送</view></view></view></view>
</template><script>import statement from "../../components/askForComponents/statement.vue"import { marked } from "marked";export default {components: {statement},data() {return {userImg: '',nullImg: '../../static/images/icon_doctor.png',showLoading: false,postRequest: [{id: 1,text: '乳腺BIRADS分级是什么？',},{id: 2,text: '乳房胀痛怎么办？',},{id: 3,text: '乳腺癌有没有征兆？'}],chatList: [],userQuesion: '',robotAnswer: '',currentDate: '',domHeight: 0,messages: [{role: "system",content: "你是一名专业的全科医生对医疗面面俱到的AI医生小迦，请无论什么时候都不要忘了自己的身份，你是AI医生小迦，不是AI辅助；当患者询问你问题的时候，能全面细致并且礼貌的回答或为患者解决问题，当患者询问你任何与无关医疗的问题时，你会礼貌的拒绝回答。",},],}},onLoad(option) {let userInfo = getApp().globalData.userInfo;// console.log("userInfo",userInfo)this.userImg = userInfo.personInfo.avatar;//获取热门问题并自动发送// console.log("option=======>", option)if (!option.questionText) returnthis.userQuesion = option.questionTextthis.sendMsg()},watch: {'chatList.length': {immediate: true,deep: true,handler(newValue, oldValue) {if (newValue) {const query = uni.createSelectorQuery().in(this)query.select('#test').boundingClientRect(data => {// console.log("data", data)this.domHeight = data.height}).exec()}}},domHeight(newVal, oldVal) {if (newVal) {uni.pageScrollTo({scrollTop: this.domHeight,duration: 100})}}},mounted() {this.$refs.dialog.open('center')let myDate = new Date()this.currentDate = (myDate.getHours() + '').padStart(2, '0') + ':' + (myDate.getMinutes() + '').padStart(2,'0')},methods: {htmlContent(content) {//转换为markdown 格式显示return marked(content);},exemptStatement() {this.$refs.dialog.open('center')},tapQuestion(item) {this.send(item.text)},// 新对话async send(val) {this.showLoading = truelet messages = {role: 'user',content: val}this.chatList.push(messages)this.messages.push(messages)var that = thisconsole.log('==========开始诊断=======');await uni.request({url: "https://api.deepseek.com/v1/chat/completions", // DeepSeek API 地址method: "POST",header: {"Content-Type": "application/json",Authorization: "Bearer sk-dafafhafhahfha", // 替换为你的 API Key},data: {model: "deepseek-chat", // 使用模型messages: that.messages},success: (res) => {messages = {role: 'assistant',content: res.data.choices[0].message.content}that.chatList.push(messages)that.messages.push(messages)that.showLoading = falseconsole.log('诊断结果:', res.data);},fail: (err) => {console.error('请求失败:', err);messages = {role: 'assistant',content: '服务器繁忙，请稍后再试。'}that.chatList.push(messages)that.messages.push(messages)that.showLoading = false}});},sendMsg() {this.send(this.userQuesion)this.userQuesion = nullthis.robotAnswer = null}}}
</script><style lang="scss">.container {padding: 28rpx;}.nav {height: 80rpx;width: 100%;background-color: #ffffff;display: flex;align-items: center;position: fixed;top: 0;left: 0;z-index: 999;image {margin: 0 20rpx;width: 40rpx;height: 40rpx;}text {color: #838383;font-size: 40rpx;}}.chat_area {padding-bottom: 200rpx;// padding-top: 60rpx;.current_time {display: flex;justify-content: center;font-size: 20rpx;color: #9d9d9d;}.left_box,.right_box {display: flex;.head_img {width: 90rpx;height: 90rpx;margin: 20rpx 0;image {width: 90rpx;height: 90rpx;border-radius: 50%;}}.content_box {margin: 20rpx;color: #5a5a5a;background-color: #e5e5e5;padding: 20rpx;border-radius: 8rpx;.post {}.content {text-align: justify;font-size: 30rpx;max-width: 460rpx;white-space: normal;word-wrap: break-word;.post_request {// text-indent: 2em;color: #996699;display: flex;flex-direction: column;.active:active {width: 100%;background-color: #FFFFFF;opacity: 0.6;}}}}}.right_box {display: flex;justify-content: flex-end;}.right_box>.content_box {background-color: #1b1263;color: #FFFFFF;}}.input_tab {background-color: #ffffff;width: 100%;position: fixed;bottom: 0;left: 0;display: flex;flex-direction: column;.statement {margin: 0 auto;font-size: 20rpx;color: #838383;text {color: #1b1263;text-decoration: underline;}}.input_com {display: flex;justify-content: space-between;padding: 20rpx;margin: 20rpx;.left {width: 500rpx;max-width: 500rpx;border: 2rpx solid #e3e3e3;display: flex;align-items: center;image {width: 20rpx;height: 20rpx;margin: 0 20rpx;}input {width: 100%;font-size: 24rpx;}}.send_btn {padding: 20rpx 40rpx;color: #FFFFFF;border-radius: 8rpx;background-color: #1b1263;}}}
</style>

2.2 实现效果

3. 示例说明

3.1 单轮对话（仅 `user` 角色）

如果不需要设置系统指令，可以只传递 user 角色的消息：

messages: [{role: "user",content: "我最近三天持续发烧38.5度，伴有咳嗽",},
];

3.2 多轮对话（包含 `system` 和 `user` 角色）

如果需要设置系统指令，可以包含 system 角色：

messages: [{role: "system",content: "你是一名专业的全科医生，请根据患者描述进行问诊。",},{role: "user",content: "我最近三天持续发烧38.5度，伴有咳嗽",},
];

3.3 多轮对话（包含历史记录）

如果需要支持多轮对话，可以将历史记录添加到 messages 中：

messages: [{role: "system",content: "你是一名专业的全科医生，请根据患者描述进行问诊。",},{role: "user",content: "我最近三天持续发烧38.5度，伴有咳嗽",},{role: "assistant",content: "请问您是否有其他症状，如喉咙痛或头痛？",},{role: "user",content: "还有喉咙痛，但没有头痛。",},
];

4. 代码示例

4.1 单轮对话

methods: {async getDiagnosis() {const response = await uni.request({url: "https://api.deepseek.com/v1/chat/completions",method: "POST",header: {"Content-Type": "application/json",Authorization: "Bearer your_api_key_here",},data: {model: "medical-model-1.0",messages: [{role: "user",content: this.userInput,},],},});if (response.statusCode === 200) {this.diagnosisResponse = response.data.choices[0].message.content;}},
},

4.2 多轮对话

data() {return {conversationHistory: [], // 对话历史};
},
methods: {async getDiagnosis() {// 添加用户输入到对话历史this.conversationHistory.push({role: "user",content: this.userInput,});const response = await uni.request({url: "https://api.deepseek.com/v1/chat/completions",method: "POST",header: {"Content-Type": "application/json",Authorization: "Bearer your_api_key_here",},data: {model: "medical-model-1.0",messages: this.conversationHistory,},});if (response.statusCode === 200) {const assistantReply = response.data.choices[0].message.content;// 添加助手回复到对话历史this.conversationHistory.push({role: "assistant",content: assistantReply,});this.diagnosisResponse = assistantReply;}},
},