blob

问题 I'm trying to set the img and src to blob URL in vuejs. I have tried to call loadImg() method inside img and src ; It didn't work. Here is my code: <template> <a v-for="(post,index) in posts" :key="index"> <img :src="loadImg(post.img)" > </a> </template> methods:{ loadImg: function (img) { fetch(img) .then(function(t){return t.blob()}) .then(function(e){ return URL.createObjectURL(e); } ) } } How do I set the image src to blob url? codesandbox => https://codesandbox.io/embed/2vmwj2k550 回答1:

问题 I'm trying to set the img and src to blob URL in vuejs. I have tried to call loadImg() method inside img and src ; It didn't work. Here is my code: <template> <a v-for="(post,index) in posts" :key="index"> <img :src="loadImg(post.img)" > </a> </template> methods:{ loadImg: function (img) { fetch(img) .then(function(t){return t.blob()}) .then(function(e){ return URL.createObjectURL(e); } ) } } How do I set the image src to blob url? codesandbox => https://codesandbox.io/embed/2vmwj2k550 回答1:

问题 I work on a Spring project to make a web app so there is a Tomcat server which permit me to lunch my web app. I've got 2 functionalities on this web app, the first permit me to upload a file on a Postgresql Database (it's works correctly). But after that, i want to be able to download this file. This is my method on my service. public byte[] download(Integer id){ Line line = getById(Line.class, id); int blobLenght; byte[] fileToReturn = null; Blob file = line.getFile(); blobLenght = (int)file

问题 I have he base64 string of an image and I'm trying to convert it into an 'application/octet-stream' because that's what the api requires. I think I've done that by creating a blob as you can see from my function. When I make the api call I keep getting the message in the title. Anyone know what's wrong? I think it might be that my blob is not an octet-stream but I've tried both sending the normal base64 string and the blob. Please help, really desperate here const blobPdfFromBase64String =

问题 I have the following fetch function in my react native project to return a blob image from MS Graph, the return works but i cannot seem to display the blob as an image. //Blob Picture fetch('https://graph.microsoft.com/v1.0/me/photo/$value', { headers: { 'Authorization': "Bearer " + accessToken }, }) .then((response) => { // console.log(response); this.setState({ BlobImage: response}); }) .catch((error) => { console.error(error); }); Then i wish to display the image like so: <Image source={

问题 I am working on patient photo upload using express, mongodb, multer, ejs, and croppiejs. When user uploads a photo they have an option to crop it. I am saving the cropped photo in a collection as BLOB object in a field called croppedPhoto . Now, i want to display that cropped photo on front-end. I am passing the patients object (which contains all the data fields of a record including cropped photo). I am thinking of converting that blob object to base64 and display it. But the issue is I am

问题 IS it possible to concatenate A1 and A2 from the particular table (for example): CREATE TABLE MY_SCHEME.CONC_BLOB ( A1 BLOB, A1_SORT NUMBER(20), T_TYPE VARCHAR2(9 BYTE), A2 BLOB, A2_SORT NUMBER(20), A3 VARCHAR2(32 BYTE), A4 BLOB, A5 VARCHAR2(8 BYTE) ) ? How? 回答1: BLOBs can be concatenated with the DBMS_LOB package, in particular with the APPEND procedure. But you will need to use some PL/SQL that iterates over the relevant rows and calls the procedure. I don't quite understand what you mean

问题 I'm using blob responseType with Axios in my VueJS app for downloading a document from the server. When the response code is 200 it works fine and download the file but when there is any http error, I'm not able to read the status code when I catch the error because the error is a JSON response. Has anyone had a similar issue and worked out a way to convert the blob response type to json and thrown an error based on the status code? I have tried sending the response as a plain text from

问题 I'm developping a reactJs application. I'm using jest to test my application. I want to test a function that download a blob. But unfortunately I receve this error: URL.createObjectURL is not a function my test function: describe('download', () => { const documentIntial = { content: 'aaa' }; it('msSaveOrOpenBlob should not have been called when navigao is undefined', () => { window.navigator.msSaveOrOpenBlob = null; download(documentIntial); expect(window.navigator.msSaveOrOpenBlob)

问题 What is the syntax to UPDATE a BLOB field in an existing SQLite record, using Python? I create a 13x13 array of floats and want to Update a specific record (i.e. using a WHERE clause) in my table with that array. What is the proper UPDATE syntax? The array has the following form: [ 4.65640926e+00 5.59250259e+00 5.28963852e+00 1.60680866e+00 -3.39492680e-01 -4.76834650e-01 -4.76834650e-01 -2.29132240e-01 1.49733067e+00 1.51563072e+00 1.49733067e+00 9.53471420e-01 -1.40306473e+00] [ 5.28963852e