DataProvider不允许返回字符串2D数组

Question

我已经用TestNG创建了一个Selenium框架。在此框架中，@Dataprovider包含一组代码，这些代码从Excel读取数据，并将该值作为2D数组返回给@Test。

@DataProvider(name="excelParam")
    public static String[][] loginData()
    {
        return Util.Excel.get("/LearningSelenium/creds.xls");
    }

    @Test(dataProvider = "excelParam")
    public void loginTest(String username, String password) {
        driver.findElement(By.name("uid")).sendKeys(username);
        driver.findElement(By.name("password")).sendKeys(password);
        driver.findElement(By.name("btnLogin")).click();
}

“get”方法返回字符串[]。但我得到的错误是“数据提供程序必须返回对象[]”。如果我将其更改为对象[]，则我的测试用例失败，错误如下：

org.testng.internal.reflect.MethodMatcherException: 
[public void ParameterTestExcel.loginTest(java.lang.String,java.lang.String)] has no parameters defined but was found to be using a data provider (either explicitly specified or inherited from class level annotation).
Data provider mismatch

Test ignored.

===============================================
Default Suite
Total tests run: 1, Passes: 0, Failures: 1, Skips: 0
===============================================

Answer 1

 **

    @DataProvider(name ="Testlogin")
        public Object[][]  getData()
        {
            // here you can give data
            return data;
        }

**

your code like " public static String[][] loginData()
    {
        return Util.Excel.get("/LearningSelenium/creds.xls");
    }

your return type is string but that should be Object[][]