access官方下载 免费完整版 使用Docker和Elasticsearch搭建全文本搜索引(7)

asyncfunctionreadAndInsertBooks() {

try{

// Clear previous ES index

awaitesConnection.resetIndex()

// Read books directory

letfiles = fs.readdirSync( './books').filter( file=>file.slice( -4) === '.txt')

console.log( `Found ${files.length}Files`)

// Read each book file, and index each paragraph in elasticsearch

for( letfile offiles) {

console.log( `Reading File - ${file}`)

constfilePath = path.join( './books', file)

const{ title, author, paragraphs } = parseBookFile(filePath)

awaitinsertBookData(title, author, paragraphs)

}

} catch(err) {

console.error(err)

}

}

readAndInsertBooks()

运行docker-compose -d --build重建镜像更新应用。

运行docker exec gs-api "node" "server/load_data.js"调用包含load_data脚本应用，应该看到Elasticsearch输出如下。随后，脚本会因为错误退出，原因是调用了一本目前还不存在的helper函数（parseBookFile）。access官方下载 免费完整版

4.4 读取数据文件

创建server/load_data.js文件，读取每本书元数据和内容：

/** Read an individual book text file, and extract the title, author, and paragraphs */

functionparseBookFile(filePath) {

// Read text file

constbook = fs.readFileSync(filePath, 'utf8')

// Find book title and author

consttitle = book.match( /^Title:s(.+)$/m)[ 1]

constauthorMatch = book.match( /^Author:s(.+)$/m)

constauthor = (!authorMatch || authorMatch[ 1].trim() === '') ? 'Unknown Author': authorMatch[ 1]

console.log( `Reading Book - ${title}By ${author}`)

// Find Guttenberg metadata header and footer

conststartOfBookMatch = book.match( /^*{3}s*START OF (THIS|THE) PROJECT GUTENBERG EBOOK.+*{3}$/m)

conststartOfBookIndex = startOfBookMatch.index + startOfBookMatch[ 0].length

本文来自电脑杂谈，转载请注明本文网址：
https://www.pc-fly.com/a/jisuanjixue/article-88976-7.html