使用 Java Content Repository 技术打造企业级内容管理系统

package ecm.contentManagement;
import java.util.List;
public interface RootComponent extends Component {
public List<ResourceComponent> getResourceComponents();
public List<ChildComponent> getChildComponents();
public ResourceComponent getResourceComponentByName(String name);
public ChildComponent getChildComponentByName(String name);
public ResourceComponent addResourceComponent(String name);
public ChildComponent addChildComponent(String name);
public boolean removeResourceComponentByName(String name);
public boolean removeChildComponentByName(String name);
public CommonProperty addCommonProperty(String name,int type,Object value);
public boolean removeCommonPropertyByName(String name);
public List<CommonProperty> getCommonPropertys();
public CommonProperty getCommonPropertyByName(String name);
}

......
private static Repository repository;
private static Repository get_JCR_Repository() {
if (repository == null) {
repository = new TransientRepository();
}
return repository;
}
public static ContentSpace connectContentSpace(){
Repository contentRepository = get_JCR_Repository();
Session session=null;
SimpleCredentials loginCredentials=new SimpleCredentials(
ECM_JCR_Constant.ECM_JCR_USER_NAME,
ECM_JCR_Constant.ECM_JCR_USER_PWD.toCharArray());
try {
session =
contentRepository.login(loginCredentials,ECM_JCR_Constant.ECM_JCR_WORKSPACE);
Workspace jcrWorkspace=session.getWorkspace();
ContentSpace contentSpace=new ContentSpaceImpl(session,jcrWorkspace);
return contentSpace;
} catch (LoginException e) {
e.printStackTrace();
} catch (NoSuchWorkspaceException e) {
return createContentSpace();
} catch (RepositoryException e) {
e.printStackTrace();
}
return null;
}
......

// 连接到 ECM 存储库
ContentSpace contentSpace=ContentManagementObjetFactory.connectContentSpace();
// 创建 RootComponent
contentSpace.addRootComponent("TestingRootComponent_1");
// 获取 RootComponent
RootComponent rootComponent=
contentSpace.getRootComponentByName("TestingRootComponent_1");
// 为 RootComponent 添加属性
rootComponent.addCommonProperty("root_propert1_String",
ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_STRING, "root property1_String Value");
// 断开与 ECM 存储库的连接

//ContentSpaceImpl 构造函数
public ContentSpaceImpl(Session session,Workspace jcrWorkspace){
this.setJcrWorkspace(jcrWorkspace);
this.setJcrSession(session);
}
//ContentSpaceImpl 中 addRootComponent 方法 JCR 实现
public void addRootComponent(String rootComponent) {
try {
Node _ECM_JCR_ROOT_NODE= jcrSession.getRootNode()
.getNode(ECM_JCR_Constant.ECM_JCR_ROOT_NODE);
_ECM_JCR_ROOT_NODE.addNode(rootComponent);
jcrSession.save();
} catch (PathNotFoundException e) {
e.printStackTrace();
} catch (RepositoryException e) {
e.printStackTrace();
}
}
//RootComponentImpl 构造函数
public RootComponentImpl(Session session,Node node){
this.jcrSession=session;
this.jcrNode=node;
}
//RootComponentImpl 中 addCommonProperty 方法 JCR 实现
public CommonProperty addCommonProperty(String name, int type, Object value) {
try {
switch(type){
case ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_BOOLEAN:
boolean propValue_boolean=((Boolean)value).booleanValue();
this.jcrNode.setProperty(name, propValue_boolean);
break;
case ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_DOUBLE:
double propValue_double=((Double)value).doubleValue();
this.jcrNode.setProperty(name, propValue_double);
break;
case ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_LONG:
long propValue_long=((Long)value).longValue();
this.jcrNode.setProperty(name, propValue_long);
break;
case ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_DECIMAL:
BigDecimal propValue_bigDecimal=(BigDecimal)value;
this.jcrNode.setProperty(name, propValue_bigDecimal);
break;
case ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_DATE:
Calendar propValue_calendar=(Calendar)value;
this.jcrNode.setProperty(name, propValue_calendar);
break;
case ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_STRING:
this.jcrNode.setProperty(name, value.toString());
break;
}
this.jcrSession.save();
CommonProperty cp=new CommonPropertyImpl(name,type,value);
return cp;
} Exception e) {
e.printStackTrace();
}
return null;
}

public static void testContentSpace(){
// 连接到 ECM 存储库
ContentSpace contentSpace=ContentManagementObjetFactory.connectContentSpace();
// 创建 RootComponent
contentSpace.addRootComponent("TestingRootComponent_1");
// 获取 RootComponent
RootComponent rootComponent=contentSpace.
getRootComponentByName("TestingRootComponent_1");
// 为 RootComponent 添加属性
rootComponent.addCommonProperty("root_propert1_String",
ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_STRING,
"root property1_String Value");
rootComponent.addCommonProperty("root_propert2_Boolean",
ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_BOOLEAN,
new Boolean(false));
// 创建 ChildComponent
ChildComponent childComponent_level_1=
rootComponent.addChildComponent("child_L1");
// 为 ChildComponent 添加属性
childComponent_level_1.addCommonProperty("child_L1_propert1_String",
ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_STRING,
"child level1 property1_String Value");
childComponent_level_1.addCommonProperty("child_L1_propert2_Long",
ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_LONG, new Long(1234567890));
// 为 ChildComponent 添加子 ChildComponent
ChildComponent childComponent_level_2=childComponent_level_1.
addChildComponent("child_L2");
// 为子代 ChildComponent 添加属性
childComponent_level_2.addCommonProperty("child_L2_propert1_Long",
ECM_JCR_Constant.ECM_JCR_COMMON_PROPERTY_DOUBLE, new Double(123.45678));
// 创建 ResourceComponent
ResourceComponent resourceComponent=
rootComponent.addResourceComponent("resource_1");
// 添加 文件 testPic.jpg 到 ResourceObject 中
resourceComponent.addResourceObject(new File("testPic.jpg"));
// 断开与 ECM 存储库的连接
contentSpace.closeContentSpace();

// 再次连接 ECM 存储库
ContentSpace contentSpace2=ContentManagementObjetFactory.connectContentSpace();
// 获取 RootComponent
RootComponent rootComponent2=contentSpace2.
getRootComponentByName("TestingRootComponent_1");
// 获取 RootComponent 属性
CommonProperty rootCommonProperty_1=rootComponent2.
getCommonPropertyByName("root_propert1_String");
System.out.println(rootCommonProperty_1.getName());
System.out.println(rootCommonProperty_1.getValue());
CommonProperty rootCommonProperty_2=rootComponent2.
getCommonPropertyByName("root_propert2_Boolean");
System.out.println(rootCommonProperty_2.getName());
System.out.println(rootCommonProperty_2.getValue());
// 获取 ChildComponent
ChildComponent childComponent_L1=rootComponent2.
getChildComponentByName("child_L1");
// 获取 ChildComponent 属性
CommonProperty _L1commonProperty_1=childComponent_L1.
getCommonPropertyByName("child_L1_propert1_String");
System.out.println(_L1commonProperty_1.getName());
System.out.println(_L1commonProperty_1.getValue());
CommonProperty _L1commonProperty_2=childComponent_L1.
getCommonPropertyByName("child_L1_propert2_Long");
System.out.println(_L1commonProperty_2.getName());
System.out.println(_L1commonProperty_2.getValue());
// 获取子代 ChildComponent
ChildComponent childComponent_L2=childComponent_L1.
getChildComponentByName("child_L2");
// 获取 子代 ChildComponent 属性
CommonProperty _L2commonProperty_1=childComponent_L2.
getCommonPropertyByName("child_L2_propert1_Long");
System.out.println(_L2commonProperty_1.getName());
System.out.println(_L2commonProperty_1.getValue());
// 获取 ResourceComponent
ResourceComponent resourceComponent2=rootComponent2.
getResourceComponentByName("resource_1");
// 获取 ResourceObject
ResourceObject robj=resourceComponent2.getResourceObject();
System.out.println(robj.getName());
System.out.println(robj.getMimeType());
System.out.println(robj.getLastModified());
System.out.println(robj.getContent());
try{
File f=new File("newFile.jpg");
InputStream is=robj.getContent();
OutputStream out=new FileOutputStream(f);
byte buf[]=new byte[1024];
int len;
while((len=is.read(buf))>0){
out.write(buf,0,len);
}
out.close();
is.close();
}catch (IOException e){
e.printStackTrace();
}
contentSpace2.closeContentSpace();
}

root_propert1_String
root property1_String Value
root_propert2_Boolean
false
child_L1_propert1_String
child level1 property1_String Value
child_L1_propert2_Long
1234567890
child_L2_propert1_Long
123.45678
testPic.jpg
application/octet-stream
java.util.GregorianCalendar....
org.apache.jackrabbit.core.data.LazyFileInputStream@86558