将调试器附加到neo4j过程jar

Question

我正在java中开发一个neo4j过程。我可以使用下面的自定义数据对其进行测试。

@Test
public void commonTargetTest2() {
    // This is in a try-block, to make sure we close the driver after the test
    try (Driver driver = GraphDatabase.driver(embeddedDatabaseServer.boltURI(), driverConfig);
            Session session = driver.session()) {
        // And given I have a node in the database
        session.run(
                "CREATE (n1:Person {name:'n1'}) CREATE (n2:Person {name:'n2'}) CREATE (n3:Person {name:'n3'}) CREATE (n4:Person {name:'n4'}) CREATE (n5:Person {name:'n5'})"
                        + "CREATE (n6:Person {name:'n6'}) CREATE (n7:Person {name:'n7'}) CREATE (n8:Person {name:'n8'}) CREATE (n9:Person {name:'n9'}) CREATE (n10:Person {name:'n10'})"
                        + "CREATE (n11:Person {name:'n11'}) CREATE (n12:Person {name:'n12'}) CREATE (n13:Person {name:'n13'})"
                        + "CREATE (n14:Person {name:'n14'}) CREATE "
                        + "(n1)-[:KNOWS]->(n6),(n2)-[:KNOWS]->(n7),(n3)-[:KNOWS]->(n8),(n4)-[:KNOWS]->(n9),(n5)-[:KNOWS]->(n10),"
                        + "(n7)-[:KNOWS]->(n11),(n8)-[:KNOWS]->(n12),(n9)-[:KNOWS]->(n13),"
                        + "(n11)-[:KNOWS]->(n14),(n12)-[:KNOWS]->(n14),(n13)-[:KNOWS]->(n14);");

        // name of the procedure I defined is "p1", below I'm calling it in cypher
        StatementResult result = session
                .run("CALL p1([1,3], [], 3, 0) YIELD nodes, edges return nodes, edges");

        InternalNode n = (InternalNode) result.single().get("nodes").asList().get(0);
        assertThat(n.id()).isEqualTo(13);
    }
}

这样做很好，但是数据是用< code>CREATE语句新生成的，非常小。我想用现有的neo4j数据库服务器测试我的过程。这样我就可以用真实/大数据看到我的程序的性能/结果。

我也可以通过下面的代码实现这一点。我可以连接到一个启动并运行的neo4j数据库。

@Test
public void commonTargetTestOnImdb() {
    // This is in a try-block, to make sure we close the driver after the test
    try (Driver drv = GraphDatabase.driver("bolt://localhost:7687", AuthTokens.basic("neo4j", "123"));
            Session session = drv.session()) {

        // find 1 common downstream of 3 nodes
        StatementResult result = session.run(
                "CALL commonStream([1047255, 1049683, 1043696], [], 3, 2) YIELD nodes, edges return nodes, edges");

        InternalNode n = (InternalNode) result.single().get("nodes").asList().get(0);
        assertThat(n.id()).isEqualTo(5);
    }

}

现在，我的问题是，如果我连接到一个现有的数据库，我不能调试我的程序的代码。我打包了一个JAR文件，并把它放在我的neo4j数据库的< code>plugin文件夹中，以便neo4j可以调用我的过程。我想我应该调试JAR文件。我使用vscode和java扩展来调试和运行测试。如何用vscode调试JAR文件？

Answer 1

为了记录在案，我找到了一种方法来调试我的neo4j存储过程。我使用Java8。我使用了IntelliJ的想法。我将configdbms.jvm.additional=-agentlib： jdwp=运输=dt_socket，服务器=y，挂起=n，地址=5005添加到neo4j.conf文件

这里请注意，Java9中的语法是不同的。最后，为了给出端口参数，它使用了地址=*：5005。这里有关于它的帖子。https://stackoverflow.com/a/62754503/3209523