Nutch索引NutchFieldpackage org.apache.nutch.indexerclass NutchField implements Writable {float wei
Nutch索引
NutchField
package org.apache.nutch.indexer;class NutchField implements Writable { float weight; List values;}Metadata
package org.apache.nutch.metadataclass Metadata { Map metadata;}NutchDocument
package org.apache.nutch.indexer;class NutchDocument { byte Version = 2; Map fields; Metadata documentMeta; float weight;}Nutch建立索引的过程中，将会把NutchDocument转换为Lucene的Document对象进行索引。