102401339 - work2

work2/renbaoshuo/.gitignore

@@ -0,0 +1 @@
+fzu/res

work2/renbaoshuo/fzu/go.mod

@@ -0,0 +1,12 @@
+module main
+
+go 1.23
+
+toolchain go1.23.3
+
+require (
+	github.com/PuerkitoBio/goquery v1.10.0 // indirect
+	github.com/andybalholm/cascadia v1.3.2 // indirect
+	github.com/mattn/go-sqlite3 v1.14.24 // indirect
+	golang.org/x/net v0.29.0 // indirect
+)

work2/renbaoshuo/fzu/go.sum

@@ -0,0 +1,42 @@
+github.com/PuerkitoBio/goquery v1.10.0 h1:6fiXdLuUvYs2OJSvNRqlNPoBm6YABE226xrbavY5Wv4=
+github.com/PuerkitoBio/goquery v1.10.0/go.mod h1:TjZZl68Q3eGHNBA8CWaxAN7rOU1EbDz3CWuolcO5Yu4=
+github.com/andybalholm/cascadia v1.3.2 h1:3Xi6Dw5lHF15JtdcmAHD3i1+T8plmv7BQ/nsViSLyss=
+github.com/andybalholm/cascadia v1.3.2/go.mod h1:7gtRlve5FxPPgIgX36uWBX58OdBsSS6lUvCFb+h7KvU=
+github.com/mattn/go-sqlite3 v1.14.24 h1:tpSp2G2KyMnnQu99ngJ47EIkWVmliIizyZBfPrBWDRM=
+github.com/mattn/go-sqlite3 v1.14.24/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/net v0.9.0/go.mod h1:d48xBJpPfHeWQsugry2m+kC02ZBRGRgulfHnEXEuWns=
+golang.org/x/net v0.29.0 h1:5ORfpBpCs4HzDYoodCDBbwHzdR5UrLBZ3sOnUJmFoHo=
+golang.org/x/net v0.29.0/go.mod h1:gLkgy8jTGERgjzMic6DS9+SP0ajcu6Xu3Orq/SpETg0=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.7.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.7.0/go.mod h1:P32HKFT3hSsZrRxla30E9HqToFYAQPCMs/zFMBUFqPY=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

work2/renbaoshuo/fzu/main.go

@@ -0,0 +1,336 @@
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"regexp"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/PuerkitoBio/goquery"
+	_ "github.com/mattn/go-sqlite3"
+)
+
+const (
+	baseURL = "https://info22.fzu.edu.cn/"
+	listURL = "lm_list.jsp?urltype=tree.TreeTempUrl&wbtreeid=1460"
+
+	fmtWithBaseURL  = baseURL + "%s"
+	fmtWithListURL  = baseURL + listURL + "&totalpage=%d&PAGENUM=%d"
+	fmtWithClickURL = baseURL + "system/resource/code/news/click/dynclicks.jsp?clicktype=%s&owner=%s&clickid=%s"
+
+	// 使用 diff 的方式进行计算，以免页面总数变化对程序的影响（前提：历史文件不删除）
+	startPageDiffWithLastPage = (1028 - 230)
+	endPageDiffWithLastPage   = (1028 - 250)
+
+	// 选择器
+	selectorTotalPagesLink = `.p_last a`
+	selectorList           = `body > div.sy-content > div > div.right.fr > div.list.fl > ul > li`
+	selectorListLink       = `a[href^="content.jsp"]`
+	selectorTitle          = `body > div.wa1200w > div.conth > form > div.conth1`
+	selectorContent        = `#vsb_content`
+
+	// 正则
+	patternTotalPages = `(?s)totalpage=(?P<totalPages>\d+)`
+	patternDate       = `(?s)<div class="conthsj" >日期： (?P<date>.*?)  &nbsp;`
+	patternAuthor     = `(?s)信息来源..(?P<author>.*?)\n..`
+	patternClicks     = `_showDynClicks\("(?P<clickType>\w+)", (?P<owner>\d+), (?P<clickId>\d+)\)`
+
+	// 数据库
+	databasePath = "res/fzu.db"
+)
+
+var (
+	startTime, _ = time.Parse("2006-01-02 15:04:05", "2020-01-01 00:00:00")
+	endTime, _   = time.Parse("2006-01-02 15:04:05", "2021-09-30 23:59:59")
+)
+
+func httpGet(url string) (string, error) {
+	client := &http.Client{}
+
+	resp, err := client.Get(url)
+	if err != nil {
+		fmt.Printf("Error occurred while getting %s: %s", url, err)
+		return "", err
+	}
+
+	defer resp.Body.Close()
+
+	buf := make([]byte, 4096)
+	res := ""
+
+	for {
+		n, _ := resp.Body.Read(buf)
+		if n == 0 {
+			break
+		}
+		res += string(buf[:n])
+	}
+
+	return res, nil
+}
+
+func parseTotalPages(html string) (int, error) {
+	doc, err := goquery.NewDocumentFromReader(strings.NewReader(html))
+	if err != nil {
+		return 0, err
+	}
+
+	href, exists := doc.Find(selectorTotalPagesLink).Attr("href")
+	if !exists {
+		return 0, fmt.Errorf("no last page link found")
+	}
+	regexp := regexp.MustCompile(patternTotalPages)
+	matches := regexp.FindStringSubmatch(href)
+	if len(matches) < 2 {
+		return 0, fmt.Errorf("no total page number found")
+	}
+
+	totalPages, err := strconv.Atoi(matches[1])
+	if err != nil {
+		return 0, err
+	}
+
+	return totalPages, nil
+}
+
+func getTotalPages() (int, error) {
+	url := fmt.Sprintf(fmtWithBaseURL, listURL)
+
+	html, err := httpGet(url)
+	if err != nil {
+		return 0, err
+	}
+
+	return parseTotalPages(html)
+}
+
+func parseListPage(html string) ([]string, error) {
+	doc, err := goquery.NewDocumentFromReader(strings.NewReader(html))
+	if err != nil {
+		return nil, err
+	}
+
+	res := []string{}
+
+	doc.Find(selectorList).Each(func(i int, s *goquery.Selection) {
+		href, exists := s.Find(selectorListLink).Attr("href")
+		if !exists {
+			return
+		}
+
+		pubDate := s.Find("span").Text()
+		timePubDate, err := time.Parse("2006-01-02", pubDate)
+		if err != nil {
+			return
+		}
+
+		if timePubDate.Before(startTime) || timePubDate.After(endTime) {
+			return
+		}
+
+		res = append(res, href)
+	})
+
+	return res, nil
+}
+
+func getListPage(page int, totalPages int) ([]string, error) {
+	url := fmt.Sprintf(fmtWithListURL, totalPages, page)
+
+	html, err := httpGet(url)
+	if err != nil {
+		return nil, err
+	}
+
+	return parseListPage(html)
+}
+
+func getClicks(clickType, owner, clickId string) (int, error) {
+	url := fmt.Sprintf(fmtWithClickURL, clickType, owner, clickId)
+
+	data, err := httpGet(url)
+	if err != nil {
+		return 0, err
+	}
+
+	return strconv.Atoi(data)
+}
+
+type ArticleResult struct {
+	Title    string
+	Content  string
+	Author   string
+	PostDate string // YYYY-MM-DD
+	Clicks   int
+}
+
+func parseArticlePage(html string) (ArticleResult, error) {
+	doc, err := goquery.NewDocumentFromReader(strings.NewReader(html))
+	if err != nil {
+		return ArticleResult{}, err
+	}
+
+	title := doc.Find(selectorTitle).Text()
+	content, err := doc.Find(selectorContent).Html()
+	if err != nil {
+		return ArticleResult{}, err
+	}
+
+	regexpDate := regexp.MustCompile(patternDate)
+	regexpAuthor := regexp.MustCompile(patternAuthor)
+	regexpClicks := regexp.MustCompile(patternClicks)
+
+	matchesDate := regexpDate.FindStringSubmatch(html)
+	matchesAuthor := regexpAuthor.FindStringSubmatch(html)
+	matchesClicks := regexpClicks.FindStringSubmatch(html)
+
+	if len(matchesDate) < 2 || len(matchesAuthor) < 2 {
+		return ArticleResult{}, fmt.Errorf("no date or author found")
+	}
+
+	postDate := matchesDate[1]
+	author := matchesAuthor[1]
+	clickType := matchesClicks[1]
+	owner := matchesClicks[2]
+	clickId := matchesClicks[3]
+
+	clicks, err := getClicks(clickType, owner, clickId)
+	if err != nil {
+		return ArticleResult{}, err
+	}
+
+	return ArticleResult{
+		Title:    title,
+		Author:   author,
+		Content:  content,
+		PostDate: postDate,
+		Clicks:   clicks,
+	}, nil
+}
+
+func getArticlePage(urlSuffix string) (ArticleResult, error) {
+	url := fmt.Sprintf(fmtWithBaseURL, urlSuffix)
+
+	html, err := httpGet(url)
+	if err != nil {
+		return ArticleResult{}, err
+	}
+
+	return parseArticlePage(html)
+}
+
+func initDb() *sql.DB {
+	os.Remove(databasePath)
+
+	db, err := sql.Open("sqlite3", databasePath)
+	if err != nil {
+		log.Fatalln("Error occurred while opening database:", err)
+	}
+
+	sqlStmt := `
+	create table articles (
+		id integer not null primary key autoincrement,
+		title text,
+		content text,
+		author text,
+		post_date text,
+		clicks integer
+	);
+	`
+
+	_, err = db.Exec(sqlStmt)
+	if err != nil {
+		log.Fatalf("%q: %s\n", err, sqlStmt)
+	}
+
+	return db
+}
+
+func insertDb(db *sql.DB, article ArticleResult) {
+	stmt, err := db.Prepare("INSERT INTO articles(title, content, author, post_date, clicks) VALUES(?, ?, ?, ?, ?)")
+	if err != nil {
+		log.Fatalln("Error occurred while preparing statement:", err)
+	}
+
+	defer stmt.Close()
+
+	_, err = stmt.Exec(article.Title, article.Content, article.Author, article.PostDate, article.Clicks)
+	if err != nil {
+		log.Fatalln("Error occurred while executing statement:", err)
+	}
+}
+
+func main() {
+	db := initDb()
+	defer db.Close()
+
+	totalPages, err := getTotalPages()
+	if err != nil {
+		fmt.Println("Error occurred while getting total pages:", err)
+		return
+	}
+
+	fmt.Println("Total pages:", totalPages)
+
+	urlList := []string{}
+	var mu sync.Mutex
+	var wg sync.WaitGroup
+	sem := make(chan struct{}, 20) // 限制并发
+
+	for page := (totalPages - startPageDiffWithLastPage); page <= (totalPages - endPageDiffWithLastPage); page++ {
+		wg.Add(1)
+		go func(page int) {
+			defer wg.Done()
+			sem <- struct{}{}
+			defer func() { <-sem }()
+
+			list, err := getListPage(page, totalPages)
+			if err != nil {
+				fmt.Println("Error occurred while getting list page:", err)
+				return
+			}
+			mu.Lock()
+			urlList = append(urlList, list...)
+			mu.Unlock()
+		}(page)
+	}
+
+	wg.Wait()
+
+	fmt.Println("Total articles:", len(urlList))
+
+	articleChan := make(chan ArticleResult, len(urlList))
+
+	for _, url := range urlList {
+		wg.Add(1)
+		go func(url string) {
+			defer wg.Done()
+			sem <- struct{}{}
+			defer func() { <-sem }()
+
+			article, err := getArticlePage(url)
+			if err != nil {
+				fmt.Println("Error occurred while getting article page:", err)
+				return
+			}
+			articleChan <- article
+		}(url)
+	}
+
+	go func() {
+		wg.Wait()
+		close(articleChan)
+	}()
+
+	for article := range articleChan {
+		insertDb(db, article)
+	}
+
+	fmt.Println("All articles saved to database:", databasePath)
+}