b010f82221
- 实现用户注册、登录、JWT令牌认证功能 - 集成Gin、GORM、Viper、Zap等框架 - 添加密码加密、数据库操作、中间件等完整功能 - 配置多环境支持、日志轮转、CORS处理 - 创建完整的项目结构和配置文件体系
82 lines
1.4 KiB
Go
82 lines
1.4 KiB
Go
package main
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import (
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"fmt"
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"io"
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"net/http"
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"regexp"
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"sync"
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)
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func main() {
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urls := []string{
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"https://golang.org",
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"https://go.dev",
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"https://www.baidu.com",
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"https://www.bing.com",
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}
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jobs := make(chan string)
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results := make(chan string)
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var wg sync.WaitGroup
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workerCount := 3
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//启动 worker
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for i := 0; i < workerCount; i++ {
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wg.Add(1)
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go worker(i, jobs, results, &wg)
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}
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//发送任务
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go func() {
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for _, url := range urls {
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jobs <- url
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}
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close(jobs) // 关闭 channel
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}()
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//单独goroutine 负责所有 worker结束后 关闭 results
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go func() {
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wg.Wait()
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close(results)
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}()
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for res := range results {
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fmt.Println(res)
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}
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}
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// worker 从 jobs 读取 URL，写结果到 results
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func worker(id int, jobs <-chan string, results chan<- string, wg *sync.WaitGroup) {
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defer wg.Done()
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for url := range jobs {
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title, err := fetchTitle(url)
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if err != nil {
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results <- fmt.Sprintf("[worker-%d] %s ERROR: %v", id, url, err)
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continue
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}
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results <- fmt.Sprintf("[worker-%d] %s => %s", id, url, title)
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}
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}
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func fetchTitle(url string) (string, error) {
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resp, err := http.Get(url)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return "", err
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}
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re := regexp.MustCompile(`<title>(.+)</title>`)
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matches := re.FindSubmatch(body)
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if len(matches) >= 2 {
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return string(matches[1]), nil
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}
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return "(no title)", nil
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}
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