Question

在我的Google Chrome扩展程序中，background.js定义了此功能：

function submitMHTML() {
  console.log("entered submitMHTML()");
  chrome.tabs.query(
    {active: true, lastFocusedWindow: true},
    function(array_of_Tabs) {
      if (array_of_Tabs.length > 0) {
        var tab = array_of_Tabs[0];
        console.log("submitMHTML() found the active tab has an ID of " + tab.id);
        chrome.pageCapture.saveAsMHTML(
          tab.id,
          function(mhtml) {
            var xhr = new XMLHttpRequest(), formData = new FormData();  
            formData.append("mhtml", mhtml);
            formData.append("surveyID", localStorage["ID"]);
            xhr.open("POST", "http://localhost:3000/task/mhtml", true);
            xhr.setRequestHeader('Authorization', 'Token token=<redacted>');
            xhr.send(formData);
            console.log("submitMHTML() sent mhtml to server");
          }
        )
      }
    }
  );
}

那么，为什么我在控制台中看到这个？

entered submitMHTML()
submitMHTML() found the active tab has an ID of 450
extensions::uncaught_exception_handler:8 Error in response to tabs.query: Error: Invocation of form pageCapture.saveAsMHTML(integer, function) doesn't match definition pageCapture.saveAsMHTML(object details, function callback)
    at Object.callback (chrome-extension://nmlggmkodifcibdmpdaohpmhljbkgpdb/background.js:194:28)
    at submitMHTML (chrome-extension://nmlggmkodifcibdmpdaohpmhljbkgpdb/background.js:188:15)
    at submitResult (chrome-extension://nmlggmkodifcibdmpdaohpmhljbkgpdb/background.js:249:5)
    at HTMLButtonElement.<anonymous> (chrome-extension://nmlggmkodifcibdmpdaohpmhljbkgpdb/popup.js:25:78)

顺便说一句，控制台日志中的行号如下：

194：chrome.pageCapture.saveAsMHTML(
188：chrome.tabs.query
249：submitMTHML();（在另一个函数内）

chrome.pageCapture.saveAsMHTML()定义为here。该函数返回一个blob，我应该能够以这种方式附加到表单。我已在清单中提供了必要的权限。

Answer 1

虽然这个问题已经过去很久了，但我最近才尝试过这个API。

chrome.tabs.query({ active: true, currentWindow: true }, ([tab]) => {
  chrome.pageCapture.saveAsMHTML({ tabId: tab.id }, ArrayBuffer => {
    const aBlob = new Blob([ArrayBuffer], { type: 'text/plain' });

    const link = document.createElement('a');
    link.href = window.URL.createObjectURL(aBlob);
    link.download = 'aaa.mhtml';
    link.click();
    window.URL.revokeObjectURL(link.href);
  });
});

为什么Chrome.pageCapture.saveAsMHTML在我的Google Chrome扩展程序中无效？

1 个答案: