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问题 How to tell Liquibase to map BLOB datatype to BYTEA on PostgreSQL? It seems that Hibernate people has taken over and adapted the tool to their needs: https://liquibase.jira.com/browse/CORE-1863 , however, EclipseLink don't support oid's and the bug seems to be still open: https://bugs.eclipse.org/bugs/show_bug.cgi?id=337467 I need to use EclipseLink, and I need to use blobs with PostgreSQL. I'd like to use Liquibase, is it possible to make those things work together? 回答1: You have two options

问题 How to tell Liquibase to map BLOB datatype to BYTEA on PostgreSQL? It seems that Hibernate people has taken over and adapted the tool to their needs: https://liquibase.jira.com/browse/CORE-1863 , however, EclipseLink don't support oid's and the bug seems to be still open: https://bugs.eclipse.org/bugs/show_bug.cgi?id=337467 I need to use EclipseLink, and I need to use blobs with PostgreSQL. I'd like to use Liquibase, is it possible to make those things work together? 回答1: You have two options

问题 How to tell Liquibase to map BLOB datatype to BYTEA on PostgreSQL? It seems that Hibernate people has taken over and adapted the tool to their needs: https://liquibase.jira.com/browse/CORE-1863 , however, EclipseLink don't support oid's and the bug seems to be still open: https://bugs.eclipse.org/bugs/show_bug.cgi?id=337467 I need to use EclipseLink, and I need to use blobs with PostgreSQL. I'd like to use Liquibase, is it possible to make those things work together? 回答1: You have two options

问题 How to tell Liquibase to map BLOB datatype to BYTEA on PostgreSQL? It seems that Hibernate people has taken over and adapted the tool to their needs: https://liquibase.jira.com/browse/CORE-1863 , however, EclipseLink don't support oid's and the bug seems to be still open: https://bugs.eclipse.org/bugs/show_bug.cgi?id=337467 I need to use EclipseLink, and I need to use blobs with PostgreSQL. I'd like to use Liquibase, is it possible to make those things work together? 回答1: You have two options

问题 The following code work perfectly in Chrome <script> function myFunction() { var blob = new Blob(['<a id="a"><b id="b">hey!</b></a>'], {type : 'text/html'}); var newurl = window.URL.createObjectURL(blob); document.getElementById("myFrame").src = newurl; } </script> But it is not working with IE. Can some one please tell me what is wrong here. The iframe "src" also set to the blob as shown below. <iframe id="myFrame" src="blob:0827B944-D600-410D-8356-96E71F316FE4"></iframe> Note: I went on the

问题 The following code work perfectly in Chrome <script> function myFunction() { var blob = new Blob(['<a id="a"><b id="b">hey!</b></a>'], {type : 'text/html'}); var newurl = window.URL.createObjectURL(blob); document.getElementById("myFrame").src = newurl; } </script> But it is not working with IE. Can some one please tell me what is wrong here. The iframe "src" also set to the blob as shown below. <iframe id="myFrame" src="blob:0827B944-D600-410D-8356-96E71F316FE4"></iframe> Note: I went on the

问题 I have a Node.js process which outputs a video stream into my Node.js app. On the client end, there is a <video> tag. I would like to stream the video from Node.js into the src attribute of the video tag. My previous experience tells me that we must use the blob object for this. However, I'm not a hundred percent certain how and why I would use it. Another possible solution I'm thinking of is to create some sort of a temporary file on my server, then write the stream to that file, then serve

问题 I have a Node.js process which outputs a video stream into my Node.js app. On the client end, there is a <video> tag. I would like to stream the video from Node.js into the src attribute of the video tag. My previous experience tells me that we must use the blob object for this. However, I'm not a hundred percent certain how and why I would use it. Another possible solution I'm thinking of is to create some sort of a temporary file on my server, then write the stream to that file, then serve

问题 I have report that uses a subreport, but since the subreport is stored in a database table as BLOB , I cannot give its path (url) in the *.jrxml file. Is there a way to add a *.jasper file loaded from the database ( BLOB or InputStream ) as a subreport. 回答1: I figured it out. Add a list component In the list's dataset fetch the field you keep your subreport as a BLOB, lets call it REPORT_DATA . Set REPORT_DATA field's type to InputStream . Add the subreport inside the list. Set "Subreport

问题 I am trying to enter data into mysql table Fruitbox .But while entering data I am getting error Fruitpdf cannot be null . I created fruitbox table as follows: Fruitname(varchar(100), Fruitpdf(blob), Fruitprice(int) Fruitpdf column contains pdf files of fruit. My file mango.pdf in desktop is size of 190 KB. I wrote following query but getting error " Fruitpdf cannot be null " while executing sql statement. INSERT INTO Fruitbox (Fruitname, Fruitpdf, Fruitprice) VALUES ('Mango', LOAD_FILE('C: