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cos-wx-sdk-v5

v1.7.2

Published

小程序 SDK for [腾讯云对象存储服务](https://cloud.tencent.com/product/cos)

Downloads

1,040

Readme

快速入门

微信小程序 SDK for 腾讯云对象存储服务

一、前期准备

  1. 到 (COS对象存储控制台)[https://console.cloud.tencent.com/cos4] 创建存储桶,得到 Bucket(存储桶名称) 和 Region(地域名称)
  2. 到 (控制台密钥管理)[https://console.cloud.tencent.com/capi] 获取您的项目 SecretId 和 SecretKey

二、计算签名

由于签名计算放在前端会暴露 SecretId 和 SecretKey,我们把签名计算过程放在后端实现,前端通过 ajax 向后端获取签名结果,正式部署时请再后端加一层自己网站本身的权限检验。

这里提供 NodeJS 的签名示例,其他语言,请参照对应的 XML SDK

三、上传例子

  1. 把 demo/lib/cos-wx-sdk-v5.js 复制到自己小程序项目代码里,在需要上传文件的地方贴以下代码

// 存储桶名称,由bucketname-appid 组成,appid必须填入,可以在COS控制台查看存储桶名称。 https://console.cloud.tencent.com/cos5/bucket
var Bucket = 'test-1250000000';
// 存储桶Region可以在COS控制台指定存储桶的概览页查看 https://console.cloud.tencent.com/cos5/bucket/ 
// 关于地域的详情见 https://cloud.tencent.com/document/product/436/6224
var Region = 'ap-guangzhou';

// 初始化实例
const cos = new COS({
    SimpleUploadMethod: 'putObject', // 强烈建议,高级上传、批量上传内部对小文件做简单上传时使用putObject,sdk版本至少需要v1.3.0
    getAuthorization: function (options, callback) {
        // 初始化时不会调用,只有调用 cos 方法(例如 cos.putObject)时才会进入
        // 异步获取临时密钥
        // 服务端 JS 示例:https://github.com/tencentyun/cos-js-sdk-v5/blob/master/server/
        // 服务端其他语言参考 COS STS SDK :https://github.com/tencentyun/qcloud-cos-sts-sdk
        // STS 详细文档指引看:https://cloud.tencent.com/document/product/436/14048
        wx.request({
            url: 'https://example.com/server/sts', // url 替换成您自己的后端服务
            data: {
                bucket: options.Bucket,
                region: options.Region,
            },
            dataType: 'json',
            success: function (result) {
                const data = result.data;
                const credentials = data && data.credentials;
                if (!data || !credentials) return console.error('credentials invalid');
                // 检查credentials格式
                console.log(credentials);
                callback({
                    TmpSecretId: credentials.tmpSecretId,
                    TmpSecretKey: credentials.tmpSecretKey,
                    // v1.2.0之前版本的 SDK 使用 XCosSecurityToken 而不是 SecurityToken
                    SecurityToken: credentials.sessionToken,
                    // 建议返回服务器时间作为签名的开始时间,避免用户浏览器本地时间偏差过大导致签名错误
                    StartTime: data.startTime, // 时间戳,单位秒,如:1580000000
                    ExpiredTime: data.expiredTime, // 时间戳,单位秒,如:1580000900
                });
            }
        });
    }
});


// 选择文件
wx.chooseImage({
    count: 1, // 默认9
    sizeType: ['original'], // 可以指定是原图还是压缩图,默认用原图
    sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机,默认二者都有
    success: function (res) {
        var filePath = res.tempFiles[0].path;
        var filename = filePath.substr(filePath.lastIndexOf('/') + 1);
        cos.postObject({
            Bucket: Bucket,
            Region: Region,
            Key: filename,
            FilePath: filePath,
            onProgress: function (info) {
                console.log(JSON.stringify(info));
            }
        }, function (err, data) {
            console.log(err || data);
        });
    }
});

说明文档

使用例子

快速入门

接口文档