项目场景：

前端使用vue3+ts 后端使用nestjs

---

1.配置gitee第三方设置

1.找到账号设置

2.找到数据管理下的第三方应用

3.点击创建，进入配置

2.代码演示

特别注意:
如果你跟我一样是前后端分离的模式开发的，应用回调地址填写的应该是你的前端路由地址。在你的前端页面获取code，把code值传给后端接口。后端接口通过code获取gitee用户信息。

代码演示

我的应用回调地址:http://localhost:8080/vuecms/gitee

1. 前端点击gitee图标登录代码:

<div @click="handleToLogin('gitee')">gitee
</div>const handleToLogin = (type:string)=>{window.location.href="http://localhost:3000/user/oauth/gitee"
}

2. http://localhost:3000/user/oauth/gitee后端接口代码

	@Get('/oauth/gitee')async gitee(@Res() response: Response) {let cid = data.cid;let redirectUrl = data.redirectUrl;//回调路劲获取code//通过该路劲获取code，这里的回调地址就是你的前端地址response.redirect(`https://gitee.com/oauth/authorize?client_id=${cid}&redirect_uri=${redirectUrl}&response_type=code`)}

3. 回调地址前端代码

<template><div class="u-f u-f-ac u-f-ajc" style="width: 100%;height:100vh"><template v-if="isOauth"><el-resulticon="success"title="授权成功,跳转中..."></el-result></template><template v-else><el-resulticon="error"title="授权失败"></el-result></template></div>
</template><script setup lang="ts">import {useRoute,useRouter} from "vue-router";import {onMounted} from "@vue/runtime-core";import {requestGiteeLogin} from "@/network/common/oauthPage";import {setToken, setUserId, setUsername} from "@/utils/storage";import {handleGetCurInstance} from "@/utils/utils";import {ref} from "vue"let route = useRoute()let router = useRouter()let query = route.query;let {model} = handleGetCurInstance()let isOauth = ref(true)onMounted(()=>{//获取返回的code，通过code对后端发起请求，获取gitee用户信息let {code} = query;let form = {code}requestGiteeLogin(form).then(res=>{let {data,code,message} = res;if(code==200){setToken(data.token)setUserId(data.id)setUsername(data.username)window.location.href="/"}else{model.handleMsg(message,"warning")isOauth.value =false;}})})
</script>

4. requestGiteeLogin请求的后端代码

//gitee登录@Post('/oauth/giteeLogin')giteeLogin(@Body() giteeLoginDto:GiteeLoginDto,@IpAddress() clientIp: string) {let {code,operationSystem,browser} = giteeLoginDto//获取accessTokenlet accessToken = await this.handleGetGiteeAccessToken(code)if(!accessToken.data){return this.msgService.fail("code过期，请重新登录")}//使用accessToken获取gitee用户信息let giteeInfo:any = await this.getGiteeInfoByAccessToken(accessToken.data);if(!giteeInfo.data){return this.msgService.fail("获取gitee账号信息失败")}let { id, name, avatar_url, email } = giteeInfo.data;let giteeId = sysConfigEnum.giteeLoginConfig + JSON.parse(JSON.stringify(id));//判断gitee是否有关联账号。如果有就登陆，没有就新创建一个账号let userNum = await this.userEntity.createQueryBuilder().where({ giteeId:giteeId }).getCount()let username;//没有账号，注册帐号if(userNum<=0){let roleData = await this.roleEntity.createQueryBuilder().where({roleName:"试用角色"}).getOne()username = handleGetCode(8);username = await this.handleGetUsername(username);let originalPwd = handleGetCode(8);let password = JSON.parse(JSON.stringify(originalPwd))password = securityMd5(password)let userData;try {userData = await this.userEntity.createQueryBuilder().insert().values({username,originalPwd,password,giteeId:giteeId,roleId:roleData.id}).execute();}catch (error) {throw new HttpException(error,HttpStatus.SERVICE_UNAVAILABLE)}id = userData.identifiers[0]["id"]}else{let userData = await this.userEntity.createQueryBuilder().where({giteeId:giteeId}).getOne()username = userData.usernameid = userData.id;}let ip  = handleDealIpv6ToIpv4(clientIp)let token = this.authService.createToken({id,username,ip})await this.updateUserInfoStatus(id,token,ip,operationSystem,browser)return {id,username,token}}//随机生成账号async handleGetUsername (username){const num = await this.userEntity.createQueryBuilder().where({username}).getCount()if(num>0){username = handleGetCode(8);return this.handleGetUsername(username)}return username;}//获取gitee的accessTokenasync handleGetGiteeAccessToken(code:string):Promise<resInterface>{let key = sysConfigEnum.giteeLoginConfiglet data = await this.sysConfigService.handleGetSysData(key)if(!data.cid || !data.secret || !data.redirectUrl){return {data:false,msg:""};}let cid = data.cid;let redirectUrl = data.redirectUrl;//回调路劲获取codelet secret = data.secret;//回调路劲获取codelet authData = await axios.post(giteeOauthConfig.authURL,{code,client_id: cid,redirect_uri: redirectUrl,client_secret: secret,}).then(res=>{return res.data;}).catch(err=>{return err.data})if(authData?.error){return this.msgService.commonRes(false,authData?.error?.error_description);}else{return this.msgService.commonRes(authData?.access_token,"");}}//通过access_token获取gitee信息async getGiteeInfoByAccessToken(accessToken: boolean | string){let authData = await axios.get(giteeOauthConfig.giteeUserAPI+`?access_token=${accessToken}`).then(res=>{return res.data;}).catch(err=>{return err.data})if(authData?.error){return this.msgService.commonRes(false,authData?.error?.error_description);}else{return this.msgService.commonRes(authData,"");}}

3.特别注意

如果以上步骤都没问题。需要把本地测试回调地址改为线上路径

如果你还是不懂，你可以克隆下我的项目。开源免费。如果对你有帮助，给我一个star就行了
https://gitee.com/derekgo/vue-cms_xg

✨$踩坑不易，还希望各位大佬支持一下$

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📃 $我的开源项目：$ vueCms.cn

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👍 $点赞，你的认可是我创作的动力！$

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如果有不懂可以留言，我看到了应该会回复
如有错误，请多多指教