您可以将dataprovider保存在单独的类中，然后使用dataprovider注释您的测试。您可以使用 dataProviderClass 指定它

You can keep dataprovider in a separate class and then annotate your tests with the dataprovider. You can specify it using dataProviderClass

从testng doc引用这里：

Quoting from testng doc here:

默认情况下，将查看数据提供者for in current test
class或其中一个基类。如果你想把你的数据
提供者放在另一个类中，它需要是一个静态方法，你需要
指定可以在dataProviderClass
属性中找到它的类：

By default, the data provider will be looked for in the current test class or one of its base classes. If you want to put your data provider in a different class, it needs to be a static method and you specify the class where it can be found in the dataProviderClass attribute:

public class StaticProvider {
  @DataProvider(name = "create")
  public static Object[][] createData() {
    return new Object[][] {
      new Object[] { new Integer(42) }
    }
  }
}

public class MyTest {
  @Test(dataProvider = "create", dataProviderClass = StaticProvider.class)
  public void test(Integer n) {
    // ...
  }
}