静安乡村民宿
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minsu_goodsmonent_manage


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Form 表单简单上传（兼容 IE8）（前端计算签名）</title>
    <style>
      h1,
      h2 {
        font-weight: normal;
      }
      #msg {
        margin-top: 10px;
      }
    </style>
  </head>
  <body>
    <h1>Form 表单简单上传（兼容 IE8）（前端计算签名）</h1>
    <div>最低兼容到 IE6 上传，不支持 onprogress</div>

    <form
      id="form"
      target="submitTarget"
      action=""
      method="post"
      enctype="multipart/form-data"
      accept="*/*"
    >
      <input id="name" name="name" type="hidden" value="" />
      <input name="success_action_status" type="hidden" value="200" />
      <input
        id="success_action_redirect"
        name="success_action_redirect"
        type="hidden"
        value=""
      />
      <input id="key" name="key" type="hidden" value="" />
      <input id="policy" name="policy" type="hidden" value="" />
      <input
        id="q-sign-algorithm"
        name="q-sign-algorithm"
        type="hidden"
        value=""
      />
      <input id="q-ak" name="q-ak" type="hidden" value="" />
      <input id="q-key-time" name="q-key-time" type="hidden" value="" />
      <input id="q-signature" name="q-signature" type="hidden" value="" />
      <input name="Content-Type" type="hidden" value="" />
      <input
        id="x-cos-security-token"
        name="x-cos-security-token"
        type="hidden"
        value=""
      />

      <!-- file 字段放在表单最后，避免文件内容过长影响签名判断和鉴权 -->
      <input id="fileSelector" name="file" type="file" />
      <input id="submitBtn" type="button" value="提交" />
    </form>
    <iframe
      id="submitTarget"
      name="submitTarget"
      style="display: none"
      frameborder="0"
    ></iframe>

    <div id="msg"></div>

    <!-- 签名计算 可通过（https://unpkg.com/cos-js-sdk-v5/demo/common/cos-auth.min.js）下载 -->
    <script src="../common/cos-auth.js"></script>
    <script>
      (function () {
        // 请求用到的参数
        const Bucket = 'examplebucket-1250000000'; // 替换为自己的存储桶
        const Region = 'ap-beijing'; // 替换为自己的存储桶地域
        const protocol = location.protocol === 'https:' ? 'https:' : 'http:';
        const prefix =
          protocol + '//' + Bucket + '.cos.' + Region + '.myqcloud.com'; // prefix 用于拼接请求
        const form = document.getElementById('form');
        form.action = prefix;

        // 对更多字符编码的 url encode 格式
        const camSafeUrlEncode = function (str) {
          return encodeURIComponent(str)
            .replace(/!/g, '%21')
            .replace(/'/g, '%27')
            .replace(/\(/g, '%28')
            .replace(/\)/g, '%29')
            .replace(/\*/g, '%2A');
        };

        // 计算签名
        const getAuthorization = function (opt, callback) {
          // 替换为自己服务端地址 获取临时密钥
          const url = `http://127.0.0.1:3000/sts`;
          const xhr = new XMLHttpRequest();
          xhr.open('GET', url, true);
          xhr.onload = function (e) {
            let result;
            try {
              result = JSON.parse(e.target.responseText);
            } catch (e) {
              callback('获取签名出错');
            }
            if (result) {
              // 使用CosAuth 利用返回的临时密钥计算签名
              const policyInfo = CosAuth({
                Version: 'post-object-policy', // 必传 写死 用于post签名计算
                SecretId: result.credentials.tmpSecretId,
                SecretKey: result.credentials.tmpSecretKey,
                Bucket,
                Key: opt.Key,
              });
              callback(null, {
                securityToken: result.credentials.securityToken,
                policyInfo: policyInfo,
              });
            } else {
              console.error(xhr.responseText);
              callback('获取签名出错');
            }
          };
          xhr.send();
        };

        // 监听上传完成
        let Key;
        const submitTarget = document.getElementById('submitTarget');
        const showMessage = function (err, data) {
          console.log(err || data);
          document.getElementById('msg').innerText = err
            ? err
            : '上传成功，ETag=' + data.ETag;
        };
        submitTarget.onload = function () {
          let search;
          try {
            search = submitTarget.contentWindow.location.search.substr(1);
          } catch (e) {
            showMessage('文件 ' + Key + ' 上传失败');
          }
          if (search) {
            const items = search.split('&');
            let i = 0;
            let arr = [];
            const data = {};
            for (i = 0; i < items.length; i++) {
              arr = items[i].split('=');
              data[arr[0]] = decodeURIComponent(arr[1] || '');
            }
            showMessage(null, {
              url: prefix + camSafeUrlEncode(Key).replace(/%2F/g, '/'),
              ETag: data.etag,
            });
          } else {
          }
        };

        // 发起上传
        document.getElementById('submitBtn').onclick = function (e) {
          const file = document.getElementById('fileSelector').files[0];
          if (!file) {
            document.getElementById('msg').innerText = '未选择上传文件';
            return;
          }
          Key = file.name;
          getAuthorization({ Key }, function (err, AuthData) {
            if (err) {
              alert(err);
              return;
            }
            // 在当前目录下放一个空的 empty.html 以便让接口上传完成跳转回来
            document.getElementById('success_action_redirect').value =
              location.href.substr(0, location.href.lastIndexOf('/') + 1) +
              'empty.html';
            document.getElementById('key').value = Key;
            document.getElementById('policy').value =
              AuthData.policyInfo.policy;
            document.getElementById('q-sign-algorithm').value =
              AuthData.policyInfo.qSignAlgorithm;
            document.getElementById('q-ak').value = AuthData.policyInfo.qAk;
            document.getElementById('q-key-time').value =
              AuthData.policyInfo.qKeyTime;
            document.getElementById('q-signature').value =
              AuthData.policyInfo.qSignature;
            document.getElementById('x-cos-security-token').value =
              AuthData.securityToken || '';
            form.submit();
          });
        };
      })();
    </script>
  </body>
</html>