我想测试使用Apache Jackrabbit保存和检索文件。当我以后无法检索时,我不确定它是否可以保存。以下是我的代码。我的问题是如何检索我保存的文件。
@Test
public void storeFile() throws Exception {
File file = getFile();
FileInputStream fileInputStream = new FileInputStream(file);
Repository repository = new TransientRepository();
Session session = repository.login(
new SimpleCredentials("username", "password".toCharArray()));
try {
logger.info("logged in as user '{}'", session.getUserID());
Node root = session.getRootNode();
// Store content
Node hello = root.addNode("userid_12");
Node world = hello.addNode("files");
logger.debug("setting fileInputStream");
world.getSession().getValueFactory().createBinary(fileInputStream);
session.save();
// Retrieve content
Node node = root.getNode("userid_12/files");
logger.info(node.getPath());
//how do I retrieve the file now?
}
答案 0 :(得分:2)
刚刚做了类似的事情,并使用了示例页面(http://wiki.apache.org/jackrabbit/ExamplesPage)来完成它。
你需要告诉jackrabbit节点类型,并在保存时传递二进制数据和mime类型,如下所示:
Node DocNode = currentDocNode.addNode(doc.getFilename(),"nt:file");
Node contentNode = DocNode.addNode("jcr:content","nt:resource");
Binary binary = session.getValueFactory().createBinary(file.getInputStream());
contentNode.setProperty("jcr:data",binary);
contentNode.setProperty("jcr:mimeType",file.getContentType());
Calendar created = Calendar.getInstance ();
contentNode.setProperty("jcr:lastModified", created);
这将在节点中正确保存文档。然后检索文件只是获取节点并读取数据,有一个JcrUtils类为您执行此操作:
Node fileNode = root.getNode("path/to/node");
InputStream stream = null;
if(null != fileNode){
stream = JcrUtils.readFile(fileNode);
}
然后你可以使用inputStream做什么(将它传递给响应等)