Question

我在Solr中实现了一个示例自定义过滤器，并配置了fieldtype：contentType以在索引分析阶段使用过滤器，如下所示;

<fieldType name="contentType" class="solr.TextField">
    <analyzer type="index">
      <tokenizer class="solr.KeywordTokenizerFactory"/>
      <filter class="com.solr.test.analyzer.ContentFilterFactory"/>
    </analyzer>
</fieldType>

以下是我的自定义过滤器工厂类：

public class ContentFilterFactory extends TokenFilterFactory {

    public ContentFilterFactory() {
        super();
    }

    @Override
    public TokenStream create(TokenStream input) {
        return new ContentFilter(input);
    }

}

启动Solr 4.5.0服务器时，加载ContentFilterFactory实例时出现以下错误。根本原因是 java.lang.NoSuchMethodException：com.solr.test.analyzer.ContentFilterFactory。（java.util.Map）

我是否需要在FilterFactory中包含init（）方法？如果是这样，我应该包含哪些内容？有人可以帮我解决这个错误。

   Caused by: org.apache.solr.common.SolrException: Plugin init failure for [schema.xml] analyzer/filter: Error instantiating class: 'com.solr.test.analyzer.ContentFilterFactory'
    at org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:177)
    at org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:400)
    at org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:95)
    at org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:43)
    at org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:151)
    ... 14 more
Caused by: org.apache.solr.common.SolrException: Error instantiating class: 'com.solr.test.analyzer.ContentFilterFactory'
    at org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:556)
    at org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:382)
    at org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:376)
    at org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:151)
    ... 18 more
Caused by: java.lang.NoSuchMethodException: com.solr.test.analyzer.ContentFilterFactory.<init>(java.util.Map)
    at java.lang.Class.getConstructor0(Class.java:2810)
    at java.lang.Class.getConstructor(Class.java:1718)
    at org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:552)
    ... 21 more

Answer 1

如果查看Javadoc for TokenFilterFactory，构造函数将获取Map<String,String>参数。尝试将ContentFilterFactory构造函数更新为：

public ContentFilterFactory(Map<String, String> args) {
  super(args);
}

在Solr中实例化自定义FilterFactory类时出错

1 个答案: