Neo4j螺栓驱动程序协议错误

Question

I am getting below error while trying neo4j bolt driver to run simple cypher. Any idea what is going wrong?

    public void boltDriver() {
    Config noSSL = Config.build()
            .withEncryptionLevel(Config.EncryptionLevel.NONE).toConfig();
    Driver driver = GraphDatabase.driver("bolt://localhost:7474",
            AuthTokens.basic("neo4j", "neo4j1"), noSSL); // <password>

    try (Session session = driver.session()) {

        StatementResult result;

        String foafQuery = " MATCH (n) WHERE EXISTS(n.country) RETURN DISTINCT \"node\" as element, n.country AS country ";
        result = session.run(foafQuery, parameters("name", "Joe"));
        while (result.hasNext()) {
            Record next = result.next();
            System.out.println(next.get("element"));
            System.out.println(next.get("country"));
        }

    }

}

Exception: Exception in thread "main" org.neo4j.driver.v1.exceptions.ClientException: Protocol error, server suggested unexpected protocol version: 1213486160 at org.neo4j.driver.internal.connector.socket.SocketClient.negotiateProtocol(SocketClient.java:198) at org.neo4j.driver.internal.connector.socket.SocketClient.start(SocketClient.java:73) at org.neo4j.driver.internal.connector.socket.SocketConnection.(SocketConnection.java:63) at org.neo4j.driver.internal.connector.socket.SocketConnector.connect(SocketConnector.java:52) at org.neo4j.driver.internal.pool.InternalConnectionPool$1.allocate(InternalConnectionPool.java:191) at org.neo4j.driver.internal.pool.InternalConnectionPool$1.allocate(InternalConnectionPool.java:180) at org.neo4j.driver.internal.pool.ThreadCachingPool.allocate(ThreadCachingPool.java:212) at org.neo4j.driver.internal.pool.ThreadCachingPool.acquireFromGlobal(ThreadCachingPool.java:164) at org.neo4j.driver.internal.pool.ThreadCachingPool.acquire(ThreadCachingPool.ja va:118) at org.neo4j.driver.internal.pool.InternalConnectionPool.acquire(InternalConnectionPool.java:109) at org.neo4j.driver.internal.InternalDriver.session(InternalDriver.java:53) at Neo4jMain.boldDriver(Neo4jMain.java:55) at Neo4jMain.main(Neo4jMain.java:30)

Answer 1

You're using the wrong port number. 7474 is by default used for http whereas 7687 is the default for binary bolt protocol.

Answer 2

一个重要的提示是1213486160是“HTTP”作为32位大端数字。