javax.jcr.lock.LockException：前提条件失败

问题描述

我在连接到AEM 6.0中的JCR存储库时遇到一些问题。当我到达在笔迹上创建会话的地步时，我得到了

我使用的示例代码。

 包org.test; 
 
 import java.io.InputStream; 
 import java.io.InputStreamReader; 
 import java.net.HttpURLConnection; 
 import java.net.URL; 
 import java.util.HashMap; 
 import java.util.Map; 
 
 import javax.jcr.Node; 
 import javax.jcr.Repository; 
 import javax.jcr.SimpleCredentials; 
 
进口org.apache.jackrabbit.commons.JcrUtils; 
 
 import com.google.api.client.repackaged.org.apache.commons.codec.binary.Base64; 
 import com.google.enterprise.apis.client.GsaClient; 
 import com.google.enterprise.apis.client.GsaEntry; 
 import com.google.enterprise.apis.client.GsaFeed; 
 import com.google.gson.JsonElement; 
 import com.google.gson.JsonObject; 
 import com.google.gson.JsonParser; 
 
 
公共类CallSlingServlet {
 
 
 public static void main（String [] args）抛出异常{
 // TODO Auto-生成的方法存根
尝试{
 
 
 
存储库= JcrUtils.getRepository（ http：// localhost：4502 / crx / server）; 
 javax.jcr.Session会话= repository.login（new SimpleCredentials（ admin， admin .toCharArray（）））; 
节点root1 = session.getRootNode（）; 
 Node node =（（Node）root1）.getNode（ / content / act / GSAEvents）; 
 System.out.println（node.getPath（））; 
 System.out.println（node.getProperty（ message）。getString（））; 
} 
 catch（例外ex）{
 //一个真正的程序需要处理该异常
 System.out.println（ error： + ex）; 
} 
}} 
  

解决方案

在JCR存储库中，内容被组织到一个或多个工作空间中，每个工作空间都包含节点和属性的分层结构。因此，要创建一个jcr会话&访问节点和您必须通过凭据传递工作空间的属性，默认AEM工作空间为 crx.default

尝试以下代码

  import java.io.InputStream; 
 import java.io.InputStreamReader; 
 import java.net.HttpURLConnection; 
 import java.net.URL; 
 import java.util.HashMap; 
 import java.util.Map; 
 
 import javax.jcr.Node; 
 import javax.jcr.Repository; 
 import javax.jcr.SimpleCredentials; 
 import org.apache.jackrabbit.commons.JcrUtils; 
 
公共类CallSlingServlet {
 public static void main（String [] args）引发异常{
 try {
 String WORKSPACE = crx.default; 
信息库= JcrUtils.getRepository（ http：// localhost：4502 / crx / server）; 
 javax.jcr.Session会话= repository.login（new SimpleCredentials（ admin， admin .toCharArray（）），WORKSPACE）; 
节点root1 = session.getRootNode（）; 
 Node node =（（Node）root1）.getNode（ / content / act / GSAEvents）; 
 System.out.println（node.getPath（））; 
 System.out.println（node.getProperty（ message）。getString（））; 
} 
 catch（例外ex）{
 //一个真正的程序需要处理该异常
 System.out.println（ error： + ex）; 
} 
}} 
  

I am having some issues connecting to the JCR repository within AEM 6.0. When I get to the point of creating a session on the repostory I get a

sample code used by me .

package org.test;

import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;

import javax.jcr.Node;
import javax.jcr.Repository;
import javax.jcr.SimpleCredentials;

import org.apache.jackrabbit.commons.JcrUtils;

import com.google.api.client.repackaged.org.apache.commons.codec.binary.Base64;
import com.google.enterprise.apis.client.GsaClient;
import com.google.enterprise.apis.client.GsaEntry;
import com.google.enterprise.apis.client.GsaFeed;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;


public class CallSlingServlet {


    public static void main(String[] args) throws Exception {
        // TODO Auto-generated method stub
        try {



            Repository repository = JcrUtils.getRepository("http://localhost:4502/crx/server");
            javax.jcr.Session session = repository.login( new SimpleCredentials("admin", "admin".toCharArray()));
            Node root1 = session.getRootNode();
            Node node = ((Node) root1).getNode("/content/act/GSAEvents"); 
            System.out.println(node.getPath()); 
            System.out.println(node.getProperty("message").getString());
        }           
        catch ( Exception ex ) {
            // a real program would need to handle this exception
            System.out.println( "error: "+ex);
        } 
    }}

解决方案

Inside a JCR repository, content is organized into one or more workspaces, each of which holds of a hierarchical structure of nodes and properties. So to create a jcr session & access node and properties you have to pass workspace with credentials, Default AEM workspace is crx.default

Try below code

    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.net.HttpURLConnection;
    import java.net.URL;
    import java.util.HashMap;
    import java.util.Map;

    import javax.jcr.Node;
    import javax.jcr.Repository;
    import javax.jcr.SimpleCredentials;
    import org.apache.jackrabbit.commons.JcrUtils;

    public class CallSlingServlet {
        public static void main(String[] args) throws Exception {
            try {
                String WORKSPACE = "crx.default";
                Repository repository = JcrUtils.getRepository("http://localhost:4502/crx/server");
                javax.jcr.Session session = repository.login( new SimpleCredentials("admin", "admin".toCharArray()),WORKSPACE);
                Node root1 = session.getRootNode();
                Node node = ((Node) root1).getNode("/content/act/GSAEvents"); 
                System.out.println(node.getPath()); 
                System.out.println(node.getProperty("message").getString());
            }           
            catch ( Exception ex ) {
                // a real program would need to handle this exception
                System.out.println( "error: "+ex);
            } 
        }}

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