使用版本在alfresco中保存文件并下载最新版本 [英] saving file in alfresco with Version and Download the latest version
问题描述
我在露天社区4.0工作，我使用这个jar alfresco-web-service-client-4.0.d.jar
I work with alfresco Community 4.0 and I used this jar alfresco-web-service-client-4.0.d.jar
使用这段代码我可以在alfresco中保存我的test.pdf文件：
using this code I can save my test.pdf file in alfresco :
File file = new File("C:/test.pdf");
saveAttachement(file,"test.pdf", "/app:company_home/cm:MyFolder",
"admin", "admin")
public String saveAttachement(File file, String name, String folderName, String userName, String pwd)
throws Exception {
byte[] contentByte = IOUtils.toByteArray(new FileInputStream(file));
// Start the session
AuthenticationUtils.startSession(userName, pwd);
try {
// Create a reference to the parent where we want to create content
Store storeRef = new Store(Constants.WORKSPACE_STORE, "SpacesStore");
ParentReference companyHomeParent = new ParentReference(storeRef, null, folderName, Constants.ASSOC_CONTAINS, null);
// Assign name
companyHomeParent.setChildName("cm:" + name);
// Construct CML statement to create content node
// Note: Assign "1" as a local id, so we can refer to it in subsequent
// CML statements within the same CML block
NamedValue[] contentProps = new NamedValue[1];
contentProps[0] = Utils.createNamedValue(Constants.PROP_NAME, name);
CMLCreate create = new CMLCreate("1", companyHomeParent, null, null, null, Constants.TYPE_CONTENT, contentProps);
// Construct CML statement to add titled aspect
NamedValue[] titledProps = new NamedValue[2];
titledProps[0] = Utils.createNamedValue(Constants.PROP_TITLE, name);
titledProps[1] = Utils.createNamedValue(Constants.PROP_DESCRIPTION, name);
CMLAddAspect addAspect = new CMLAddAspect(Constants.ASPECT_TITLED, titledProps, null, "1");
// Construct CML Block
CML cml = new CML();
cml.setCreate(new CMLCreate[] { create });
cml.setAddAspect(new CMLAddAspect[] { addAspect });
// Issue CML statement via Repository Web Service and retrieve result
// Note: Batching of multiple statements into a single web call
UpdateResult[] result = WebServiceFactory.getRepositoryService().update(cml);
Reference content = result[0].getDestination();
// Write some content
ContentServiceSoapBindingStub contentService = WebServiceFactory.getContentService();
//String text = "The quick brown fox jumps over the lazy dog";
ContentFormat contentFormat = new ContentFormat("text/plain", "UTF-8");
Content contentRef = contentService.write(content, Constants.PROP_CONTENT, contentByte, contentFormat);
System.out.println("Document are created successfully. UID:= " + content.getUuid());
return content.getUuid();
} catch (Throwable e) {
System.out.println(e.toString());
} finally {
// End the session
AuthenticationUtils.endSession();
//System.exit(0);
}
return null;
}
在alfresco中保存此文件后我有这个id d7633eff-8595-4d6c-8c18-a29a656607ba
after saving this file in alfresco I have this id d7633eff-8595-4d6c-8c18-a29a656607ba
稍后将用于下载此文件
这是下载代码：
ContentResult contentResult = getContentsById("d7633eff-8595-4d6c-8c18-a29a656607ba", "admin", "admin");
public ContentResult getContentsById(String contentId, String userName, String pwd)
throws Exception {
ContentResult contentResult = new ContentResult();
// Start the session
AuthenticationUtils.startSession(userName, pwd);
try {
Store storeRef = new Store(Constants.WORKSPACE_STORE, "SpacesStore");
ContentServiceSoapBindingStub contentService = WebServiceFactory.getContentService();
Reference contentReference = new Reference(storeRef, contentId, null);
Content[] readResult = null;
try {
readResult = contentService.read(new Predicate(new Reference[] { contentReference }, storeRef, null), Constants.PROP_CONTENT);
} catch (ContentFault e) {
e.printStackTrace();
} catch (RemoteException e) {
e.printStackTrace();
}
if ((readResult != null) && (readResult[0] != null)) {
Content content = readResult[0];
ContentFormat cnf = content.getFormat();
Reference ref = content.getNode();
String[] splitedUrl = content.getUrl().split("/");
String name = splitedUrl[splitedUrl.length - 1];
InputStream is = ContentUtils.getContentAsInputStream(content);
byte[] contentByte = ConvertUtil.convertInputStreamToByte(is);
contentResult.setName(name);
contentResult.setMimetype(cnf.getMimetype());
contentResult.setId(ref.getUuid());
contentResult.setUrl(content.getUrl());
contentResult.setPath(ref.getPath());
contentResult.setContentByte(contentByte);
System.out.println(" document has been retrieved");
}
} catch (Exception e) {
System.out.println(e.toString());
} finally {
// End the session
AuthenticationUtils.endSession();
// System.exit(0);
}
return contentResult;
}
目前我更改 test.pdf 文件内容没有更改文件名
，我把它放在光盘的另一个位置。
currently I change the test.pdf file content without changing the file name and I put it in another location in the disc.
这是新的文件位置。
C：/version/test.pdf
所以在磁盘中我有两个同名的文件但是具有不同的内容。
So in the disk I have two files with the same name but with different content.
我的目标是在露天保存新文件，但使用版本控制。
my goal is to save the new file in alfresco but using versioning.
在我的意见我必须使用在户外保存的旧ID： d7633eff-8595-4d6c-8c18-a29a656607ba
in my opinion I must use the old id which is saving in alfresco : d7633eff-8595-4d6c-8c18-a29a656607ba
所以我应该开发一种方法作为参数的新文件和旧的ID
so I should develop a method that takes as a parameter the new file and the old id
像这样
File file = new File("C:/version/test.pdf");
saveWithVersionAttachement(file,"d7633eff-8595-4d6c-8c18-a29a656607ba","test.pdf", "/app:company_home/cm:MyFolder",
"admin", "admin",)
public String saveWithVersionAttachement(File file,String oldId, String name, String folderName, String userName, String pwd)
throws Exception {
.............
.............
在我看来，这种方法必须将新文件保存在alfresco中，如test_2.pdf或test_v2.pdf ..
in my opinion this method must save the new file in alfresco like this test_2.pdf or test_v2.pdf ..
所以这两个文件保存在露天并且具有相同的ID
so the two files are saved in alfresco and having the same id
，并且在下载方法中我希望拥有最新版本。
and in the download method I want to have the latest version.
所以我必须更改方法 getContentById（d7633eff-8595-4d6c-8c18-a29a656607ba，admin，admin）;
为了返回最新版本 test_2.pdf或test_v2.pdf ...
我尝试过unsucces使用 alfresco-OpenCMIS-extension-0.7.jar
I tried unsuccessfully to work with OpenCMIS using alfresco-OpenCMIS-extension-0.7.jar
在OpenCMIS中使用 Alfresco \ tomcat \\ webapps\alfresco \ WEB-INF \classes \alfresco\model\contentModel.xml
I added this lines in Alfresco\tomcat\webapps\alfresco\WEB-INF\classes\alfresco\model\contentModel.xml
<mandatory-aspects>
<aspect>cm:versionable</aspect>
</mandatory-aspects>
我还添加了这行 version.store.enableAutoVersioning = true
Alfresco \ tomcat \ Shared \classes \ alfresco-global.properties
是否有人可以帮助我解决我的问题
is there anyone who can help me to solve my problem
更新：
我与CMIS合作：
我尝试使用此代码：
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.chemistry.opencmis.client.api.Document;
import org.apache.chemistry.opencmis.client.api.Repository;
import org.apache.chemistry.opencmis.client.api.Session;
import org.apache.chemistry.opencmis.client.api.SessionFactory;
import org.apache.chemistry.opencmis.client.runtime.SessionFactoryImpl;
import org.apache.chemistry.opencmis.commons.SessionParameter;
import org.apache.chemistry.opencmis.commons.data.ContentStream;
import org.apache.chemistry.opencmis.commons.enums.BindingType;
import org.apache.commons.io.IOUtils;
public void saveVersioning(File file, String filename, String userName, String pwd, String docId)
throws Exception {
SessionFactory factory = SessionFactoryImpl.newInstance();
Map<String, String> parameters = new HashMap<String, String>();
// User credentials.
parameters.put(SessionParameter.USER,userName);
parameters.put(SessionParameter.PASSWORD, pwd);
// Connection settings.
parameters.put(SessionParameter.BINDING_TYPE, BindingType.ATOMPUB.value());
parameters.put(SessionParameter.ATOMPUB_URL, "http://localhost:9080/alfresco/service/cmis"); // URL to your CMIS server.
parameters.put(SessionParameter.AUTH_HTTP_BASIC, "true" );
// Create session.
// Alfresco only provides one repository.
Repository repository = factory.getRepositories(parameters).get(0);
Session session = repository.createSession();
// Get the contents of the file
Document doc = (Document) session.getObject(docId);
ContentStream contentStream = doc.getContentStream(); // returns null if the document has no content
if (contentStream != null) {
String mimetype = "text/plain; charset=UTF-8";
String content = "";
if (contentStream != null) {
filename = contentStream.getFileName();
mimetype = contentStream.getMimeType();
content = getContentAsString(contentStream);
System.out.println("file name "+filename);
System.out.println("minetype "+mimetype);
System.out.println("content "+content);
}
byte[] buf = IOUtils.toByteArray(new FileInputStream(file));
ByteArrayInputStream input = new ByteArrayInputStream(buf);
contentStream = session.getObjectFactory().createContentStream(
filename, buf.length, mimetype, input);
System.out.println("Document version history");
{
List<Document> versions = doc.getAllVersions();
for (Document version : versions) {
System.out.println("\tname: " + version.getName());
System.out.println("\tversion label: " + version.getVersionLabel());
System.out.println("\tversion series id: " + version.getVersionSeriesId());
System.out.println("\tchecked out by: "
+ version.getVersionSeriesCheckedOutBy());
System.out.println("\tchecked out id: "
+ version.getVersionSeriesCheckedOutId());
System.out.println("\tmajor version: " + version.isMajorVersion());
System.out.println("\tlatest version: " + version.isLatestVersion());
System.out.println("\tlatest major version: " + version.isLatestMajorVersion());
System.out.println("\tcheckin comment: " + version.getCheckinComment());
System.out.println("\tcontent length: " + version.getContentStreamLength()
+ "\n");
}
}
}
}
private static String getContentAsString(ContentStream stream) throws IOException {
StringBuilder sb = new StringBuilder();
Reader reader = new InputStreamReader(stream.getStream(), "UTF-8");
try {
final char[] buffer = new char[4 * 1024];
int b;
while (true) {
b = reader.read(buffer, 0, buffer.length);
if (b > 0) {
sb.append(buffer, 0, b);
} else if (b == -1) {
break;
}
}
} finally {
reader.close();
}
return sb.toString();
}
我使用此代码调用此函数：
I call this fonction using this code :
File file = new File("C:/version/test.pdf");
saveVersioning(file, "test.pdf","admin","admin","d7633eff-8595-4d6c-8c18-a29a656607ba");
我用过这个罐子：
chemistry-opencmis-client-api-0.13.0.jar
chemistry-opencmis-client-bindings-0.13.0.jar
chemistry-opencmis-client-impl-0.13.0.jar
chemistry-opencmis-commons-api-0.13.0.jar
chemistry-opencmis-commons-impl-0.13.0.jar
commons-io-1.4.jar
slf4j-api-1.7.5.jar
stax2-api-3.1.4.jar
woodstox-core-asl-4.4.0.jar
但是当我尝试测试时出现此错误：
but when I try to test I have this error :
Caused by: java.lang.NoClassDefFoundError: org/apache/chemistry/opencmis/client/api/SessionFactory
.............
............
Caused by: java.lang.ClassNotFoundException: org.apache.chemistry.opencmis.client.api.SessionFactory
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
... 124 more
推荐答案
实现这一目标的最快和最简单方式是利用 RESTfull API
The fastest and easiest way to achieve that is to leverage the RESTfull API
这也将确保与新版本的兼容性alfresco。
This will also ensure compatibility with new versions of alfresco.
请注意，您需要在表单属性 updatenoderef 中提供要更新的文档的noderef，并且该属性为 majorversion 是一个布尔标志，用于指定新版本是否为文档的次要/主要版本。
Note that you need to provide the noderef for the document to update in the form property updatenoderef and that the property majorversion is a boolean flag to specify if the new version is a minor/major version of the document.
以下示例代码可能对您有所帮助你的用例：
Here is a sample code that might help you with your usecase:
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost uploadFile = new HttpPost(<alfresco-service-uri>+"/api/upload?alf_ticket="+<al-ticket>);
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
builder.addTextBody("username", "<username>", ContentType.TEXT_PLAIN);
builder.addTextBody("updatenoderef", <noderef>, ContentType.TEXT_PLAIN);
builder.addTextBody("...", "...", ContentType.TEXT_PLAIN);
builder.addBinaryBody("filedata", <InputStream>, ContentType.DEFAULT_BINARY, <filename>);
HttpEntity multipart = builder.build();
uploadFile.setEntity(multipart);
CloseableHttpResponse response = httpClient.execute(uploadFile);
String responseString = IOUtils.toString(response.getEntity().getContent(), "UTF-8");
JSONObject responseJson = new JSONObject(responseString);
if (response.getStatusLine().getStatusCode()!=200){
throw new Exception("Couldn't upload file to the repository, webscript response :" + responseString );
}
注1：您需要更换这些tockens < *>使用您自己的值/ vars
Note 1: You need to replace these tockens <*> with your own values/vars
Note 2: If you have problem retrieving a ticket, check this link, or this one
这篇关于使用版本在alfresco中保存文件并下载最新版本的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
