java - 启动 Elasticsearch 时无法加载 xerial snappy-java

Question

我在启动 Elasticsearch 时遇到异常。

java.lang.NoClassDefFoundError: org/xerial/snappy/Snappy
    at org.elasticsearch.common.compress.snappy.xerial.XerialSnappy.<clinit>(XerialSnappy.java:42) ~[elasticsearch-0.20.6.jar:na]
    at org.elasticsearch.common.compress.CompressorFactory.<clinit>(CompressorFactory.java:58) ~[elasticsearch-0.20.6.jar:na]
    at org.elasticsearch.client.transport.TransportClient.<init>(TransportClient.java:161) [elasticsearch-0.20.6.jar:na]
    at org.elasticsearch.client.transport.TransportClient.<init>(TransportClient.java:109) [elasticsearch-0.20.6.jar:na]
    at no.breakpoint.service.search.SearchClientFactory.getClient(SearchClientFactory.java:17) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.7.0]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[na:1.7.0]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.7.0]
    at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0]
//....
Caused by: java.lang.ClassNotFoundException: org.xerial.snappy.Snappy
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366) ~[na:1.7.0]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[na:1.7.0]
    at java.security.AccessController.doPrivileged(Native Method) ~[na:1.7.0]
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354) ~[na:1.7.0]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423) ~[na:1.7.0]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) ~[na:1.7.0]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356) ~[na:1.7.0]

POM 中的依赖:

    <dependency>
        <groupId>org.elasticsearch</groupId>
        <artifactId>elasticsearch</artifactId>
        <version>0.20.6</version>
    </dependency>

如果我在 POM 中添加此依赖项，异常就会消失。但是，这是什么原因(或者，我知道这通常意味着在类路径中找不到库并添加依赖项修复了它，但是 Elasticsearch 的传递依赖项有问题吗)？

    <dependency>
        <groupId>org.xerial.snappy</groupId>
        <artifactId>snappy-java</artifactId>
        <version>1.0.4.1</version>
    </dependency>

Answer 1

之前遇到过。我能够通过使用 1.0.5-M1 版本而不是 1.0.4.1 来解决它

希望对您有所帮助!