小代码改进

 package MonitorTest;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.ui.ExpectedCondition;
import org.openqa.selenium.support.ui.Select;
import org.openqa.selenium.support.ui.WebDriverWait;
public class MonitorTest_improve {
 public static void main(String[] args) throws InterruptedException, IOException{
  //存储监控 名称的文件地址
  String fileUrl="D:\\bukejian\\tmp.txt";
  //访问地址
  String url=;
  ArrayList<String> list = new ArrayList<String>();
  String encoding="GBK";
  
  File file = new File(fileUrl);
  if(file.isFile() && file.exists()){
            InputStreamReader read = new InputStreamReader(
            new FileInputStream(file),encoding);
            BufferedReader bufferedReader = new BufferedReader(read);
            String lineTxt = null;
            while((lineTxt = bufferedReader.readLine()) != null){  
             list.add(lineTxt);
            }
            read.close();
         }else{
          System.out.println("No exist");
         }       
  
  System.setProperty("webdriver.firefox.bin", "D:/bukejian/Mozilla Firefox/firefox.exe");
  WebDriver dr = new FirefoxDriver(); 
  dr.get(url);
  WebElement submit=(new WebDriverWait(dr,10)).until(new ExpectedCondition<WebElement>(){
      @Override
      public WebElement apply(WebDriver d){
       return d.findElement(By.cssSelector("input[type=\"submit\"]"));
      }
     });
  dr.findElement(By.name("login_username")).clear();
  dr.findElement(By.name("login_username")).sendKeys("bukejian");
  dr.findElement(By.name("login_password")).clear();
  dr.findElement(By.name("login_password")).sendKeys("bukejian");
  submit.click();
  
  int j=0;
  for(String a :list){
   (new WebDriverWait(dr,10)).until(new ExpectedCondition<WebElement>(){
       @Override
       public WebElement apply(WebDriver d){
        return d.findElement(By.linkText("Add"));
       }
      }).click();
   
   WebElement select=(new WebDriverWait(dr,10)).until(new ExpectedCondition<WebElement>(){
       @Override
       public WebElement apply(WebDriver d){
        return d.findElement(By.name("type_select"));
       }
      });
   new Select(select).selectByVisibleText("Graph");
   
   WebElement graph_id=(new WebDriverWait(dr,10)).until(new ExpectedCondition<WebElement>(){
       @Override
       public WebElement apply(WebDriver d){
        return d.findElement(By.id("local_graph_id"));
       }
      });
      new Select(graph_id).selectByVisibleText(a);
      
      (new WebDriverWait(dr,10)).until(new ExpectedCondition<WebElement>(){
       @Override
       public WebElement apply(WebDriver d){
        return d.findElement(By.cssSelector("input[type=\"button\"]"));
       }
      }).click();
      
      
      //dr.findElement(By.cssSelector("input[type=\"submit\"]")).click();//提交
          
      System.out.println(j+"="+a);
      j++;    
  }
  dr.close();  
 }
}

全加上了 等待10s，用取消操作验证了下倒是不会超时报错了

Exception in thread "main" org.openqa.selenium.NoSuchElementException: Unable to locate element: {"method":"bukejian","selector":"bukejian"}

之前会报这种错误，应该是没找到元素超时了，这次所有元素都最多等待10s应该不会报错了吧