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Storing images in bytea fields in a PostgreSQL database

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I stored an image in a PostgreSQL database with column type bytea using PHP. The problem is every time I try to load the image in a browser it does not appear. The Firefox developer console says the image is either truncated or corrupt. The PHP code: //code for inserting into the database if(array_key_exists('submit_pic', $_POST)){ $user=$_SESSION['name']; if(isset($_FILES['thumbnail'])&&$_FILES['thumbnail']['size']>0){ $fi = $_FILES['thumbnail']['tmp_name']; $p=fopen($fi,'r'); $data=fread($p,filesize($fi)); $data=addslashes($data); $dat= pg_escape_bytea($data); $q="update userinfo set image='

JAVA存取PostgreSQL二进制类型bytea

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经过测试：JAVA存取PostgreSQL的bytea类型均存在内存的限制问题（存取的数据过大会出现out of memory内存溢出的问题），EnterpriseDB对此做了优化。取 PostgreSQL 中的 bytea ，并存储到硬盘上 . /** * @author Liu Yuanyuan */ private void getBytea { Connection conn = null; Statement stmt = null; ResultSet rs = null; try { String driver = "org.postgresql.Driver"; String url = "jdbc:postgresql://" + "127.0.0.1" + ":" + "5866" + "/" + "db1"; Class.forName(driver); System.out.println("find class"); conn = DriverManager.getConnection(url, "lyy", "lyy"); System.out.println("connected"); stmt = conn.createStatement(); String sql = "select obj from lyy.rawtable2 where id

proper hibernate mapping for @lob in Hibernate pojo. we are using hibernate mapping. can you please tell me equivalent for @lob annotation

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问题 We are using hibernate mapping. In hibernate configuration file we have given type="blob" and pojo class getBlob and setBlob methods we have. Apart from this we need to have @lob right. what is equivalent for lob in hibernate mapping @Override public Hospital getHospital(long hospId, String hospitalName) { Hospital hos= hibernateTemplate.find("from Hospital hos where hos.id = ? and hos.name = ? ", hospId,hospitalName); } @Transactional public void saveHospital(Hosipital hos) { Blob blob =

Store and retrieve images in Postgresql using Java [closed]

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问题 I am new to Java programming, I am searching for Java code to store images in PostgreSQL and to retrieve the image. In PostgreSQL I have used Bytea Data-type. the image was stored. but when I retrieve I am getting NULL. I cant get the image. Any example for this or any other suggestion on this would be helpful. 回答1: chapter 7 of the postgresql jdbc documentation deals with storing binary data and uses an image (*.gif file) an an example. you might want to read it. inserting an image into the