小编Sam*_*ary的帖子

我有两个Angular组件app-image-input和app-button。我将模板中的app-button用于app-image-input，如下所示。

AppButtonComponent

appButton.html

<button type="button" (click)="buttonClicked.emit()">{{label}}</button>

appButton.ts

@Component({
  selector: 'app-button',
  templateUrl: './appButton.html'
})
export class AppButtonComponent {

  @Input()
  label : string

  @Input()
  enabled : boolean

  @Output()
  buttonClicked = new EventEmitter()
}

AppImageInputComponent

appImageInput.html

<div class="take-photo">
  <span>Photo</span><input type="file" accept="image/*" capture>
</div>

<hr class="hr">

<div class="inner">
    <app-button class="submit" label="Submit" (buttonClicked)="submitClk()"></app-button>
    <app-button label="Cancel" (buttonClicked)="cancelClk()"></app-button>
</div>

应用模块

app.module.ts

// ..... imports go here.

@NgModule({
  declarations: [AppButtonComponent, AppImageInputComponent],
  entryComponents: [AppButtonComponent, AppImageInputComponent],
  imports: [
    FormsModule,
    BrowserModule,
  ],
  providers: [],
  bootstrap: []
})
export class AppModule { …

从音频文件中提取数据字节时,以下两种实现有什么区别？

该文件是一个.wav文件,我想只提取数据,没有标题或任何其他东西.

实施1:

public byte[] extractAudioFromFile(String filePath) {
    try {
        // Get an input stream on the byte array
        // containing the data
        File file = new File(filePath);
        final AudioInputStream audioInputStream = AudioSystem
                .getAudioInputStream(file);

        byte[] buffer = new byte[4096];
        int counter;
        while ((counter = audioInputStream.read(buffer, 0, buffer.length)) != -1) {
            if (counter > 0) {
                byteOut.write(buffer, 0, counter);
            }
        }
        audioInputStream.close();
        byteOut.close();
    } catch (Exception e) {
        System.out.println(e);
        System.exit(0);
    }// end catch

    return ((ByteArrayOutputStream) byteOut).toByteArray();
}

实施2:

public …