使用版本将文件保存在露天并下载最新版本

我与 alfresco Community 4.0 一起工作，我使用了这个罐子alfresco-web-service-client-4.0.d.jar

使用此代码我可以将我的 test.pdf 文件保存在 alfresco 中：

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;
    }

在露天保存这个文件后我有这个IDd7633eff-8595-4d6c-8c18-a29a656607ba

稍后将使用它来下载该文件

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;
    }

目前我改变了test.pdf文件内容不改变文件名 我把它放在光盘的另一个位置。

这是新的文件位置。

C:/版本/test.pdf

所以在磁盘中我有两个同名但内容不同的文件。

我的目标是将新文件保存在露天但使用版本控制。

在我看来，我必须使用保存在 alfresco 中的旧 ID：d7633eff-8595-4d6c-8c18-a29a656607ba

所以我应该开发一种方法，将新文件和旧 id 作为参数

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露天，如 test_2.pdf 或 test_v2.pdf ..

所以这两个文件保存在 alfresco 中并且具有相同的 id

在下载方法中我想要最新版本。

所以我必须改变方法getContentById ("d7633eff-8595-4d6c-8c18-a29a656607ba", "admin", "admin");

为了返回最新版本test_2.pdf 或 test_v2.pdf ...

我尝试使用 OpenCMIS 失败alfresco-OpenCMIS-extension-0.7.jar

我添加了这一行Alfresco\tomcat\webapps\alfresco\WEB-INF\classes\alfresco\model\contentModel.xml

<mandatory-aspects>
<aspect>cm:versionable</aspect>
</mandatory-aspects>

我还添加了这一行version.store.enableAutoVersioning=true

in Alfresco\tomcat\shared\classes\alfresco-global.properties

有谁可以帮助我解决我的问题

更新 ：

我与 CMIS 合作：

我尝试使用这段代码：

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();
    }

我使用以下代码调用此函数：

File file = new File("C:/version/test.pdf");

saveVersioning(file, "test.pdf","admin","admin","d7633eff-8595-4d6c-8c18-a29a656607ba");

我用了这个罐子：

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：

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

最快且easiest实现这一目标的方法是利用REST API

这也将确保与新版本的 alfresco 的兼容性。

请注意，您需要在表单属性中提供要更新的文档的节点引用更新节点引用并且该财产主要版本是一个布尔标志，用于指定新版本是否是文档的次要/主要版本。

以下是可能对您的用例有所帮助的示例代码：

        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 );
        }

Note 1:您需要将这些标记 替换为您自己的值/变量

Note 2:如果您在取票时遇到问题，请检查这个链接, or this one