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我上傳了一個CSV文件，並且已經在Neo4j上定義了節點和關係。我試圖在一個基本上運行一個來自Spring的密碼查詢的例子上創建一個程序庫，它將生成neo4j的輸出。但是，我遇到此錯誤：運行從Spring到Neo4j的Cypher查詢
Exception in thread "main" java.lang.NoSuchMethodError:org.neo4j.graphdb.factory.GraphDatabaseFactory.newEmbeddedDatabase(Ljava/io/File;)Lorg/neo4j/graphdb/GraphDatabaseService;
at org.neo4j.connection.Neo4j.run(Neo4j.java:43)
at org.neo4j.connection.Neo4j.main(Neo4j.java:37)
我想知道什麼可能是錯誤？ 這裏是我的代碼：
public class Neo4j{
public enum NodeType implements Label{
Issues, Cost, Reliability, Timeliness;
}
public enum RelationType implements RelationshipType{
APPLIES_TO
}
String rows = "";
String nodeResult;
String resultString;
String columnString;
private static File DB_PATH = new File("/Users/phaml1/Documents/Neo4j/default.graphdb/import/");
public static void main(String[] args){
Neo4j test = new Neo4j();
test.run();
}
void run()
{
clear();
GraphDatabaseService db = new GraphDatabaseFactory().newEmbeddedDatabase(DB_PATH);
try(Transaction tx1 = db.beginTx();
Result result = db.execute("MATCH(b:Business)-[:APPLIES_TO]->(e:Time) RETURN b,e"))
{
while(result.hasNext())
{
while (result.hasNext())
{
Map<String,Object> row = result.next();
for (Entry<String,Object> column : row.entrySet())
{
rows += column.getKey() + ": " + column.getValue() + "; ";
}
rows += "\n";
}
}
try (Transaction something = db.beginTx();
Result result1 = db.execute("MATCH(b:Business)-[:APPLIES_TO]->(e:Time) RETURN b,e"))
{
Iterator<Node> n_column = result.columnAs("n");
for(Node node: Iterators.asIterable(n_column))
{
nodeResult = node + ": " + node.getProperties("Description");
}
List<String> columns = result.columns();
columnString = columns.toString();
resultString = db.execute("MATCH(b:Business)-[:APPLIES_TO]->(e:Time) RETURN b,e").resultAsString();
}
db.shutdown();
}
}
private void clear(){
try{
deleteRecursively(DB_PATH);
}
catch(IOException e){
throw new RuntimeException(e);
}
}
}