我與ModelControllerClient合作以獲取有關(guān)在Wildfly 服務(wù)器上使用的 Logger 的一些信息。我想要一個(gè)所有記錄器名稱的列表。這就是我獲取有關(guān)記錄器的所有信息的方式：ModelNode op = new ModelNode();op.get("operation").set("read-resource");ModelNode address = op.get("address");address.add("subsystem", "logging");address.add("logger", "*");ModelNode result = client.execute(op);這是我得到的ModelNode結(jié)果的一個(gè)小例子。{ "address" => [ ("subsystem" => "logging"), ("logger" => "jacorb") ], "outcome" => "success", "result" => { "category" => "jacorb", "filter" => undefined, "filter-spec" => undefined, "handlers" => undefined, "level" => "WARN", "use-parent-handlers" => true } }, { "address" => [ ("subsystem" => "logging"), ("logger" => "jacorb.config") ], "outcome" => "success", "result" => { "category" => "jacorb.config", "filter" => undefined, "filter-spec" => undefined, "handlers" => undefined, "level" => "ERROR", "use-parent-handlers" => true } },我只想獲取“記錄器”/“類別”的值。我試圖通過以下方式獲取記錄器的名稱：result.get("logger");但它返回“未定義”。我想問題是我有不止一個(gè)名為“l(fā)ogger”的對(duì)象。當(dāng)我嘗試使用“類別”時(shí)也會(huì)發(fā)生同樣的情況。
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您需要先閱讀結(jié)果。在簡(jiǎn)單的情況下，它會(huì)是result.get("result", "logger"). 您還可以使用OperationsAPI 并執(zhí)行類似Operations.readResult(result).get("logger").
如果您只想要記錄器名稱，這里是一個(gè)示例：
try (ModelControllerClient client = ModelControllerClient.Factory.create("localhost", 9990)) {
final ModelNode address = Operations.createAddress("subsystem", "logging");
final ModelNode op = Operations.createOperation(ClientConstants.READ_CHILDREN_NAMES_OPERATION, address);
op.get(ClientConstants.CHILD_TYPE).set("logger");
final ModelNode result = client.execute(op);
if (Operations.isSuccessfulOutcome(result)) {
final List<ModelNode> loggerNames = Operations.readResult(result).asList();
for (ModelNode loggerName : loggerNames) {
System.out.printf("logger=%s%n", loggerName.asString());
}
} else {
System.err.printf("Failed to get the logger names: %s%n", Operations.getFailureDescription(result).asString());
}
}
如果您想要完整的描述，您可以改用該read-children-resource操作。
WildFly 文檔也有一節(jié)介紹如何使用ModelControllerClient以及ModelNode 和 ModelType API。
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