public static void main(String[] args) throws IOException {
    Settings settings = ImmutableSettings.settingsBuilder()
            .put("cluster.name", "foxzen")
            .put("node.name", "yu").build();
    Client client = new TransportClient(settings)
            .addTransportAddress(new InetSocketTransportAddress("XXX.XXX.XXX.XXX", 9200));
            // XXX is my server's ip address
    IndexResponse response = client.prepareIndex("twitter", "tweet")
            .setSource(XContentFactory.jsonBuilder()
                    .startObject()
                    .field("productId", "1")
                    .field("productName", "XXX").endObject()).execute().actionGet();
    System.out.println(response.getIndex());
    System.out.println(response.getType());
    System.out.println(response.getVersion());
    client.close();
}

我从计算机访问服务器

curl -get http://XXX.XXX.XXX.XXX:9200/

得到这个

{
    "status" : 200,
    "name" : "yu",
    "version" : {
        "number" : "1.1.0",
        "build_hash" : "2181e113dea80b4a9e31e58e9686658a2d46e363",
        "build_timestamp" : "2014-03-25T15:59:51Z",
        "build_snapshot" : false,
        "lucene_version" : "4.7"
    },
    "tagline" : "You Know, for Search"
}

为什么使用Java API会出错？

编辑

有集群和节点部分的配置 elasticsearch.yml

################################### Cluster ###################################

# Cluster name identifies your cluster for auto-discovery. If you're running
# multiple clusters on the same network, make sure you're using unique names.
#
cluster.name: foxzen


#################################### Node #####################################

# Node names are generated dynamically on startup, so you're relieved
# from configuring them manually. You can tie this node to a specific name:
#
node.name: yu