httpclient不可序列化异常

0wi1tuuw  于 2021-06-24  发布在  Storm
关注(0)|答案(1)|浏览(492)

我试图实现一个基本的1喷-1螺栓风暴拓扑。我使用ApacheHttpClient(4.3.1)发出了一个http请求。但是,我运行它时遇到以下异常:

[main] ERROR org.apache.zookeeper.server.NIOServerCnxn  - Thread Thread[main,5,main] died
java.lang.RuntimeException: java.io.NotSerializableException: org.apache.http.impl.client.InternalHttpClient
    at backtype.storm.utils.Utils.serialize(Utils.java:56)
    at backtype.storm.topology.TopologyBuilder.createTopology(TopologyBuilder.java:89)
    at app.storm.StormTopology.main(StormTopology.java:26)
Caused by: java.io.NotSerializableException: org.apache.http.impl.client.InternalHttpClient
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1508)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347)
    at backtype.storm.utils.Utils.serialize(Utils.java:52)
    ... 2 more

还有人看到这个吗?我知道storm本身在内部使用http客户机(4.1.1)。我试图用4.3.1版本替换内部库,但遇到另一个错误:

Exception in thread "main" java.lang.NoSuchFieldError: INSTANCE
    at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.<init>(DefaultHttpRequestWriterFactory.java:52)
    at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.<init>(DefaultHttpRequestWriterFactory.java:56)
    at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.<clinit>(DefaultHttpRequestWriterFactory.java:46)
    at org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.<init>(ManagedHttpClientConnectionFactory.java:72)
    at org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.<init>(ManagedHttpClientConnectionFactory.java:84)
    at org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.<clinit>(ManagedHttpClientConnectionFactory.java:59)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager$InternalConnectionFactory.<init>(PoolingHttpClientConnectionManager.java:487)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:147)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:136)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:112)
    at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:727)
    at org.apache.http.impl.client.HttpClients.createDefault(HttpClients.java:58)
    at app.storm.bolts.DataFetcherBolt.<init>(DataFetcherBolt.java:34)
    at app.storm.StormTopology.main(StormTopology.java:18)
a64a0gku

a64a0gku1#

我从谷歌论坛上得到了风暴计划的答案。以下是该帖子的链接:
https://groups.google.com/forum/#!主题/风暴用户/vdfamker9lk
修复方法是在bolt类的prepare方法中示例化httpclient示例。

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