使用org.wildfly.core:wildfly-controller-client API，您可以执行以下操作：

try (ModelControllerClient client = ModelControllerClient.Factory.create("localhost", 9990)) {
    final ModelNode address = Operations.createAddress("system-property", "test.property");
    ModelNode op = Operations.createRemoveOperation(address);
    ModelNode result = client.execute(op);
    if (!Operations.isSuccessfulOutcome(result)) {
        throw new RuntimeException("Failed to remove property: " + Operations.getFailureDescription(result).asString());
    }
    op = Operations.createAddOperation(address);
    op.get("value").set("test-value");
    result = client.execute(op);
    if (!Operations.isSuccessfulOutcome(result)) {
        throw new RuntimeException("Failed to add property: " + Operations.getFailureDescription(result).asString());
    }
}

您也可以使用REST API，但是您需要有一种方法来执行摘要式身份验证。

Client client = null;
try {
    final JsonObject json = Json.createObjectBuilder()
            .add("address", Json.createArrayBuilder()
                    .add("system-property")
                    .add("test.property.2"))
            .add("operation", "add")
            .add("value", "test-value")
            .build();
    client = ClientBuilder.newClient();
    final Response response = client.target("http://localhost:9990/management/")
            .request()
            .header(HttpHeaders.AUTHORIZATION, "Digest <settings>")
            .post(Entity.json(json));
    System.out.println(response.getStatusInfo());
} finally {
    if (client != null) client.close();
}