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[英]Travers through Neo4j nodes and relationships in JAVA using REST API
[英]Access neo4j nodes and relationships through java
我已經加載了5萬個節點,並通過talend建立了它們之間的關系。 我編寫了Java代碼以連接到neo4j並嘗試執行密碼查詢。 它正在連接neo4j,但顯示錯誤的結果。 我的Java代碼是:
package com.Neo4J;
import org.neo4j.cypher.javacompat.ExecutionEngine;
import org.neo4j.cypher.javacompat.ExecutionResult;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Transaction;
import org.neo4j.graphdb.factory.GraphDatabaseFactory;
public class CaseNeo4J {
private static final String Neo4J_DBPath="/neo4j-community-1.9.2/data/graph.db";
GraphDatabaseService gdb;
public void connect(){
gdb = new GraphDatabaseFactory().newEmbeddedDatabase(Neo4J_DBPath);
Transaction transaction = gdb.beginTx();
ExecutionEngine engine = new ExecutionEngine(gdb);
ExecutionResult result = engine.execute( "start n=node(*) return n");
System.out.println(result.dumpToString());
}
public static void main(String[] args) {
CaseNeo4J neoobj = new CaseNeo4J();
neoobj.connect();
}
}
outputs as :
+-----------+
| n |
+-----------+
| Node[0]{} |
+-----------+
1 row
實際上,它應該顯示50000個節點,但是它顯示的僅是1個...知道嗎?
抱歉,如果我的想法太明顯了,但是您是否嘗試過使用:MATCH(n)RETURN n作為查詢?
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