Java Lucene 如何找到 class TermFreqVector 和 class TermPositionVector？

Question

我的 IDE 没有看到这个界面，我不明白如何使用它。

(Windows+NetBeans+Lucene 7.4.0)

我的pom.xml:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.javacodegeeks</groupId>
    <artifactId>jstringsearch</artifactId>
    <version>1.0.0</version>
    <packaging>jar</packaging>

    <name>jstringsearch</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.6</maven.compiler.source>
        <maven.compiler.target>1.6</maven.compiler.target>
        <java.version>1.8</java.version>
        <lucene.version>7.4.0</lucene.version>
    </properties>

    <!-- Build plugins -->
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <executions>
                    <execution>
                        <id>copy-dependencies</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>copy-dependencies</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${project.build.directory}/lib</outputDirectory>
                            <overWriteReleases>false</overWriteReleases>
                            <overWriteSnapshots>false</overWriteSnapshots>
                            <overWriteIfNewer>true</overWriteIfNewer>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
 
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.2.0</version>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                            <mainClass>com.javacodegeeks.jstringsearch.Main2</mainClass>
                       
                            <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                            <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
                        </manifest>
                    </archive>
                    <source>1.5</source>
                    <target>1.5</target>
                </configuration>
            </plugin>
                      
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-source-plugin</artifactId>
                <version>3.2.1</version>
                <executions>
                    <execution>
                        <id>attach-sources</id>
                        <goals>
                            <goal>jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>3.2.0</version>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.javacodegeeks.jstringsearch.Main2</mainClass>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id> <!-- this is used for inheritance merges -->
                        <phase>package</phase> <!-- bind to the packaging phase -->
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
    
    
    <dependencies>
      
        <!-- Full text search -->
        <dependency>
            <groupId>org.apache.lucene</groupId>
            <artifactId>lucene-core</artifactId>
            <version>${lucene.version}</version>
            <type>jar</type>
        </dependency>
        <dependency>
            <groupId>org.apache.lucene</groupId>
            <artifactId>lucene-analyzers-common</artifactId>
            <version>${lucene.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.lucene</groupId>
            <artifactId>lucene-queryparser</artifactId>
            <version>${lucene.version}</version>
            <type>jar</type>
        </dependency>
        <!-- To include highlight support -->
        <dependency>
            <groupId>org.apache.lucene</groupId>
            <artifactId>lucene-highlighter</artifactId>
            <version>${lucene.version}</version>
        </dependency>

        <dependency>
            <groupId>com.googlecode.json-simple</groupId>
            <artifactId>json-simple</artifactId>
            <version>1.1.1</version>
        </dependency>
      
        <!-- Detect languages of text -->
        <dependency>
            <groupId>io.github.kju2.languagedetector</groupId>
            <artifactId>language-detector</artifactId>
            <version>1.0.6-SNAPSHOT</version>
            <type>jar</type>
        </dependency>

        <!-- Helps to create test units -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
    
    </dependencies>
    
</project>

部分代码：

    Directory directory = new RAMDirectory();
    IndexWriterConfig indexWriterConfig = new IndexWriterConfig(new StandardAnalyzer());
    IndexWriter writer = new IndexWriter(directory, indexWriterConfig);

    Document doc = new Document();
    // Field.Store.NO, Field.Index.ANALYZED, Field.TermVector.YES
    FieldType type = new FieldType();
    type.setStoreTermVectors(true);
    type.setStoreTermVectorPositions(true);
    type.setStoreTermVectorOffsets(true);
    type.setStored(true);
    type.setIndexOptions(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS);
    Field fieldStore = new Field("tags", "Kite good world.", type);
    doc.add(fieldStore);
    writer.addDocument(doc);
    writer.close();
    
    DirectoryReader reader = DirectoryReader.open(directory);
    IndexSearcher searcher = new IndexSearcher(reader);
    
    QueryParser queryParser = new QueryParser("tags", new StandardAnalyzer());
    Query query = queryParser.parse("\"Kite World\"~1");
    TopDocs results = searcher.search(query, 1);
    
    for ( ScoreDoc scoreDoc : results.scoreDocs) {

        //Here Red Errors!!!
        IndexReader re = DirectoryReader.open(directory);
        TermFreqVector tfvector = re.getTermFreqVector(scoreDoc.doc, "tags");
        TermPositionVector tpvector = (TermPositionVector) tfvector;
        int index = termPositionVector.indexOf("the");

在教程中我看到有人写了：

import org.apache.lucene.index.TermFreqVector;
import org.apache.lucene.index.TermPositionVector;

但是当我这样做时，我的 IDE 没有寻找那个，它向我显示错误。

你对此有何看法？我如何找到 class TermFreqVector 和 class TermPositionVector？

Answer 1

TermFreqVector 和 TermPositionVector 是非常古老的 Lucene 代码，直到 3.x.x.

版本才出现

很有可能，您的 POM 文件中的 lucene 版本更新得多 (8.x.x)，因此您必须对其进行调整。

我建议您使用 8.x.x 并修复您的代码。

Java Lucene 如何找到 class TermFreqVector 和 class TermPositionVector？

Java Lucene How can i find class TermFreqVector and class TermPositionVector?

java

lucene