如何解决Go语言中的并发文件的读写锁冲突问题？

package main

import (
    "fmt"
    "os"
    "sync"
)

type FileWriter struct {
    file   *os.File
    rwLock sync.RWMutex
}

func NewFileWriter(filename string) (*FileWriter, error) {
    file, err := os.OpenFile(filename, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0666)
    if err != nil {
        return nil, err
    }

    return &FileWriter{
        file: file,
    }, nil
}

func (fw *FileWriter) Write(data []byte) error {
    fw.rwLock.Lock()
    defer fw.rwLock.Unlock()

    _, err := fw.file.Write(data)
    if err != nil {
        return err
    }

    return nil
}

func main() {
    writer, err := NewFileWriter("log.txt")
    if err != nil {
        fmt.Println("Failed to create file writer:", err)
        return
    }

    var wg sync.WaitGroup
    for i := 0; i < 10; i++ {
        wg.Add(1)
        go func(index int) {
            defer wg.Done()

            data := fmt.Sprintf("Data %d
", index)
            err := writer.Write([]byte(data))
            if err != nil {
                fmt.Println("Failed to write data:", err)
            }
        }(i)
    }

    wg.Wait()
    writer.file.Close()

    fmt.Println("File writing finished.")
}