Java 风暴示例字数错误InvalidTopologyException
我在编程和风暴方面有点呆头呆脑。我有一本书中的例子:“开始使用ApacheStrom”。我使用的是Storm 1.1.0和jdk 1.8。当我尝试在eclipse neon中或通过命令“storm jar…”运行代码时,我会出现以下错误:Java 风暴示例字数错误InvalidTopologyException,java,apache,apache-storm,Java,Apache,Apache Storm,我在编程和风暴方面有点呆头呆脑。我有一本书中的例子:“开始使用ApacheStrom”。我使用的是Storm 1.1.0和jdk 1.8。当我尝试在eclipse neon中或通过命令“storm jar…”运行代码时,我会出现以下错误: [main] ERROR o.a.s.s.o.a.z.s.NIOServerCnxnFactory - Thread Thread[main,5,main] died org.apache.storm.generated.InvalidTopologyExce
[main] ERROR o.a.s.s.o.a.z.s.NIOServerCnxnFactory - Thread Thread[main,5,main] died org.apache.storm.generated.InvalidTopologyException:null
有人知道这个错误的原因吗?我该如何修复它
我写的代码如下:
喷口:
public class WordReader implements IRichSpout{
TopologyContext context;
SpoutOutputCollector collector;
FileReader filereader;
private boolean completed = false;
public void ack(Object msgId){
System.out.println("OK: "+msgId);
}
public void fail(Object msgId){
System.out.println("FAIL: "+msgId);
}
public void nextTuple(){
if (completed){
try {
Thread.sleep(1000);
} catch (Exception e) {
//do nothing
}
//it should return to function
return;
}
String str;
try {
while ((str = reader.readLine()) != null){
this.collector.emit(new Values(str),str);
}
}catch (Exception e) {
throw new RuntimeException("Error reading tuple",e);
} finally {
completed = true;
}
}
public void open(Map conf, TopologyContext context,
SpoutOutputCollector collector){
try {
this.context = context;
this.filereader = new FileReader(conf.get("words").toString());
}catch(FileNotFoundException e) {
throw new RuntimeException("Error!");
}
this.collector = collector;
}
public void declareOutputFileds(OutputFieldsDeclarer declarer)
{
declarer.declare(new Fields("line"));
}
public void close() {
// TODO Auto-generated method stub
}
public void activate() {
// TODO Auto-generated method stub
}
public void deactivate() {
// TODO Auto-generated method stub
}
public void declareOutputFields(OutputFieldsDeclarer declarer) {
// TODO Auto-generated method stub
}
public Map<String, Object> getComponentConfiguration() {
// TODO Auto-generated method stub
return null;
}
t在构建拓扑结构时,
wordnormalizer
中有一个输入错误。它应该连接到字计数器
:
builder.setBolt("word-normalizer", new WordNormalizer()).shuffleGrouping("word-reader");
builder.setBolt("word-counter", new WordCounter()).shuffleGrouping("word-normalizer");
我照你说的做了,但根本不管用。我再次得到InvalidTopologyException错误。
String name;
Integer id;
Map<String, Integer> counters;
private OutputCollector collector;
public void execute(Tuple input) {
String str = input.getString(0);
if(!counters.containsKey(str)){
counters.put(str, 1);
}else{
Integer c = counters.get(str) + 1;
counters.put(str, c);
}
collector.ack(input);
}
public void prepare(Map conf, TopologyContext context, OutputCollector collector)
{
this.counters = new HashMap<String, Integer>();
this.collector = collector;
this.name = context.getThisComponentId();
this.id = context.getThisTaskId();
}
public void cleanup() {
System.out.println("-- Word Counter ["+name+"-"+id+"] --");
for(Map.Entry<String, Integer> entry : counters.entrySet()){
System.out.println(entry.getKey()+": "+entry.getValue());
}
}
public void declareOutputFields(OutputFieldsDeclarer declarer) {
// TODO Auto-generated method stub
}
public Map<String, Object> getComponentConfiguration() {
// TODO Auto-generated method stub
return null;
}}
public static void main(String[] args) {
TopologyBuilder builder = new TopologyBuilder();
builder.setSpout("word-reader", new WordReader());
builder.setBolt("word-normalizer", new WordNormalizer()).shuffleGrouping("word-reader");
builder.setBolt("word-counter", new WordCounter()).shuffleGrouping("word-normalizer");
Config conf = new Config();
conf.put(Config.TOPOLOGY_MAX_SPOUT_PENDING, 1);
conf.put("word", 0);
conf.setDebug(true);
LocalCluster cluster = new LocalCluster();
cluster.submitTopology("word", conf, builder.createTopology());
try{
Thread.sleep(2000);
} catch (Exception e) {
// TODO: handle exception
}
cluster.shutdown();
}}
builder.setBolt("word-normalizer", new WordNormalizer()).shuffleGrouping("word-reader");
builder.setBolt("word-counter", new WordCounter()).shuffleGrouping("word-normalizer");