import  java.io.File;
import  jxl.Workbook;
import  jxl.write.Label;
import  jxl.write.WritableSheet;
import  jxl.write.WritableWorkbook;

public class UpdateExcel{
    public static void main(String args[]){
        try{
         //  Excel获得文件
            Workbook wb = Workbook.getWorkbook(new File("test.xls"));
            //  打开一个文件的副本，并且指定数据写回到原文件
            WritableWorkbook book = Workbook.createWorkbook(new File("test.xls"),wb);
            //  添加一个工作表
            WritableSheet sheet = book.createSheet("第二页",1);
            sheet.addCell(new Label(0,0,"第二页的测试数据"));
            book.write();
            book.close();
        }catch(Exception e){
         System.out.println(e);
        }
    }
}

import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.NoSuchElementException;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.ie.InternetExplorerDriver;

/*
 * 判断一个元素是否存在
 */
public class ElementIsExsit {
 //查找一个元素是否存在
 public boolean isElementExsit(WebDriver driver, By locator) {
  boolean flag = false;
  try {
   WebElement element=driver.findElement(locator);
   //flag = true;
   flag=null!=element;
   System.out.println("元素: " + locator.toString()+ " 存在!");
  }catch(NoSuchElementException e) {
   System.out.println("元素: " + locator.toString()+ " 不存在!");
   flag = false;
  }
  return flag;
 }
 
 //如何使用上面的方法
 public void test(){
  WebDriver driver = new InternetExplorerDriver();
  
  //显性等待
  driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
  
  By locator = By.id("id");
  isElementExsit(driver,locator);
 }
}

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import com.sun.org.apache.xerces.internal.impl.xpath.regex.ParseException;

public class Movision_verifyImage {
private static HttpClient hc = new DefaultHttpClient();
 
 
 public static void main(String args[]) throws ClientProtocolException, IOException, ParseException, URISyntaxException{
  
  //获取图片验证码页面随机参数（当前时间）
  long date = new Date().getTime();
  System.out.println(date);
  
  List<NameValuePair> params = new ArrayList<NameValuePair>();
  params.add(new BasicNameValuePair("random",Long.toString(date)));
  get("http://172.16.3.6/admin/portalVerifyImage",params);

 }
 
 /*
  * 带参数的GET请求
  *
  */
 public static void get(String url,List<NameValuePair> params) throws ParseException, UnsupportedEncodingException, IOException, URISyntaxException{
  //get请求
  HttpGet httpget = new HttpGet(url);
  //设置参数
  String str = EntityUtils.toString(new UrlEncodedFormEntity(params));
  httpget.setURI(new URI(httpget.getURI().toString()+"?"+str));
  
  //发送请求
  HttpResponse re = hc.execute(httpget);
  
  //获取相应实体
  HttpEntity entity = re.getEntity();

  if (entity != null && entity.isStreaming()) {
   File storeFile = new File("F:\\test.jpg");
            FileOutputStream fos = new FileOutputStream(storeFile);

            // 将取得的文件文件流写入目标文件
            InputStream is = entity.getContent();
            byte[] b = new byte[1024];
            int j = 0;

            while ((j = is.read(b)) != -1) {
               fos.write(b, 0, j);
            }
            fos.flush();
            fos.close();
         } else {
            System.out.println("[" + url + "] 未找到.");
            return;
         }
        
  //关闭连接
  hc.getConnectionManager().shutdown();
 }
}