如何使用Java中的“Startswith”变量查找文件
我正在尝试根据每次迭代从excel表中提取的前8个数字找到一个文件。 每当我使用下面的代码时，我都会收到错误消息“在封闭范围内定义的局部变量CaseID必须是最终的或有效的最终”。 我还是新手，所以我不知道怎么解决这个问题，即使这听起来像一个简单的修复。 问题发生在代码底部的caseID变量中。
package Chrome; //CHROME import java.io.File; import java.io.FileFilter; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.FilenameFilter; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.DataFormatter; import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import org.openqa.selenium.chrome.ChromeDriver; import org.openqa.selenium.chrome.ChromeOptions; public class ValidateInput { public static void main(String[] args) throws Throwable { // TODO Auto-generated method stub // String filePath=System.getProperty("user.dir")+"\\UP.xlsx"; //File src = new File(filePath); //System.out.println(filePath); File src = new File("C:\\Users\\Z246379\\Documents\\TestDataFolder\\ValidateInput.xlsx"); FileInputStream fis = new FileInputStream(src); XSSFWorkbook wb = new XSSFWorkbook(fis); XSSFSheet Sheet1 = wb.getSheetAt(0); int i1 = 2; //Username String data0 = Sheet1.getRow(2).getCell(0).getStringCellValue(); //Password String data01 = Sheet1.getRow(2).getCell(1).getStringCellValue(); //Case ID String caseID = Sheet1.getRow(i1).getCell(2).getStringCellValue(); // Description String Desc = Sheet1.getRow(2).getCell(3).getStringCellValue(); //Internal Claim File String ICF = Sheet1.getRow(1).getCell(4).getStringCellValue(); String CRPT = Sheet1.getRow(1).getCell(5).getStringCellValue(); // final String caseID1 = caseID1; //Chrome driver code System.out.println("Called openBrowser"); String exePath = System.getProperty("user.dir")+"\\chromedriver.exe"; System.setProperty("webdriver.chrome.driver", exePath); ChromeOptions options = new ChromeOptions(); options.setExperimentalOption("useAutomationExtension", false); options.addArguments("start-maximized"); options.addArguments("--no-sandbox"); options.addArguments("--disable-extensions-except"); options.addArguments("disable-extensions"); //options.setExperimentalOption("useAutomationExtension", false); WebDriver driver = new ChromeDriver(options); driver.get("https://client.abc.com"); //Logging in driver.findElement(By.xpath("//input[@id='userid']")).sendKeys(data0); driver.findElement(By.xpath("//body[@class='no-nav']/div[@id='wrapper']/header[@class='header']/div[@class='container']/div[@class='menu']/div[@class='drop']/div[@class='login-form']/form[@method='POST']/div[2]/input[1]")).sendKeys(data01); driver.findElement(By.xpath("//input[@value='Sign In']")).click(); Thread.sleep(2000); //Navigate to Validate Input driver.findElement(By.xpath("//span[@class='wpsNavLevel2'][contains(text(),'EZ-Test')]")).click(); Thread.sleep(3000); driver.get("https://ezt.abc.com/Test/inputFiles/selectValidateInput/selectValidateInput.xhtml"); while (caseID != null) { caseID = Sheet1.getRow(i1).getCell(2).getStringCellValue(); //Input Validate Input stuff driver.findElement(By.xpath("//input[@id='mainForm:caseId']")).sendKeys(caseID); driver.findElement(By.xpath("//input[@id='mainForm:testBedDesc']")).sendKeys(Desc); driver.findElement(By.xpath("//select[@id='mainForm:customRptOptions']")).sendKeys(ICF); driver.findElement(By.xpath("//span[@id='mainForm:customReportLabel']")).click(); File dir = new File("C:\\Users\\Z333379\\Documents\\Test beds"); FilenameFilter filter = new FilenameFilter() { public boolean accept (File dir, String name) { return name.startsWith(caseID); //this is where i get the error. its not letting me make case ID a variable. but i really need the starts with stuff } }; String[] children = dir.list(filter); if (children == null) { System.out.println("Either dir does not exist or is not a directory"); } else { for (int i=0; i< children.length; i++) { String filename = children[i]; System.out.println(filename); driver.findElement(By.xpath("//input[@id='mainForm:comprehensive']")).sendKeys("C:\\Users\\Z246379\\Documents\\Test beds\\" + filename); } } driver.findElement(By.xpath("//button[@id='mainForm:reset']")).click(); i1=i1+1; } } } 这里：
FilenameFilter filter = new FilenameFilter() { public boolean accept (File dir, String name) { return name.startsWith(caseID); } };
您不能在内部本地类的定义中使用可变变量。 这就是你收到错误编译器的原因。
创建一个临时变量并在其中分配caseID的值，在内部本地类中使用此变量：
final String localCaseID = caseID; FilenameFilter filter = new FilenameFilter() { public boolean accept (File dir, String name) { return name.startsWith(localCaseID); } };
您可以使用内部类而不是匿名类。 定义如下：
private static class CaseIDFilenameFilter implements FilenameFilter { private final String caseID; private CaseIDFilenameFilter(String caseID) { this.caseID = caseID; } @Override public boolean accept(File dir, String name) { return name.startsWith(caseID); } }
然后在你的代码中使用它，如：
FilenameFilter filter = new CaseIDFilenameFilter(str);