我正在尝试使用Selenium自动化从网站获取数据，当我尝试从该网站访问数据时，我遇到异常
run:
Starting ChromeDriver (v2.9.248315) on port 15621
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/http/entity/ContentType
at org.openqa.selenium.remote.HttpCommandExecutor$EntityWithEncoding.<init>(HttpCommandExecutor.java:411)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:306)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:66)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:568)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:240)
at org.openqa.selenium.chrome.ChromeDriver.startSession(ChromeDriver.java:181)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:126)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:139)
at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:160)
at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:149)
at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:106)
at pocmandi.PocMandi.main(PocMandi.java:32)
Caused by: java.lang.ClassNotFoundException: org.apache.http.entity.ContentType
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 12 more
这是我的鳕鱼
package pocmandi;
import com.gargoylesoftware.htmlunit.BrowserVersion;
import java.util.StringTokenizer;
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.htmlunit.HtmlUnitDriver;
import org.openqa.selenium.support.ui.Select;
import java.sql.*;
import org.openqa.selenium.chrome.ChromeDriver;
public class PocMandi {
Statement st = null;
Connection cn = null;
public static void main(String args[]) throws InterruptedException, ClassNotFoundException, SQLException {
int j = 0;
String htmlTableText = null;
System.setProperty("webdriver.chrome.driver", "C:\\Users\\SHAKTI\\Desktop\\JarFiles\\chromedriver_win32\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
String commodity = "Jo";
String commo[] = {"Paddy", "Rice", "Jwar", "Barley", "Corn", "Wheat", "Jo", "Bejhar", "Jai", "Urad", "Moong", "Chana", "Matar"};
for (String com : commo) {
String sDate = "27/03/2014";
String url = "http://www.upmandiparishad.in/commodityWiseAll.aspx";
driver.get(url);
Thread.sleep(5000);
new Select(driver.findElement(By.id("ctl00_ContentPlaceHolder1_ddl_commodity"))).selectByVisibleText(com);
driver.findElement(By.id("ctl00_ContentPlaceHolder1_txt_rate")).sendKeys(sDate);
Thread.sleep(3000);
driver.findElement(By.id("ctl00_ContentPlaceHolder1_btn_show")).click();
Thread.sleep(5000);
WebElement findElement = driver.findElement(By.id("ctl00_ContentPlaceHolder1_GridView1"));
// WebElement find=driver.findElement(By.id("ctl00_ContentPlaceHolder1_ddl_commodity"));
htmlTableText = findElement.getText();
// String html=find.getText();
// do whatever you want now, This is raw table values.
htmlTableText = htmlTableText.replace("S.No.DistrictMarketPrice", "");
htmlTableText = htmlTableText.replaceAll("\\s(\\d+\\s[A-Z])", "\n$1");
htmlTableText = htmlTableText.replaceAll("(?=(.*?[ ]){4,}).*?[\n\r]", "");
htmlTableText = htmlTableText.replace("S.No. District Market Price", "");
System.out.println(htmlTableText);
String s[] = htmlTableText.split("");
StringTokenizer str = new StringTokenizer(htmlTableText);
while (str.hasMoreTokens()) // for(int i=0;i<s.length;i++)
// if(str.hasMoreElements())
{
String no = str.nextElement().toString();
String city = str.nextElement().toString();
String mandi = str.nextElement().toString();
String price = str.nextElement().toString();
Class.forName("com.mysql.jdbc.Driver");
Connection cn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mandi", "root", "");
//insert them into the database
PreparedStatement ps = cn.prepareStatement("insert into commoditydemo values(?,?,?,?,?,?)");
ps.setString(1, no);
ps.setString(2, city);
ps.setString(3, mandi);
ps.setString(4, price);
ps.setString(5, com);
ps.setString(6, "0");
j = ps.executeUpdate();
cn.close();
}
}
driver.close();
driver.quit();
if (j == 1) {
System.out.println("data inserted");
} else {
System.out.println("not inserted");
}
}
}
如何获取输出并删除此异常？
提前致谢
答案 0 :(得分：1)
要检查您的代码，我尝试了以下操作：
@Test
public void test1() throws Exception {
System.setProperty("webdriver.chrome.driver", "t:\\Others\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
String url = "http://www.upmandiparishad.in/commodityWiseAll.aspx";
driver.get(url);
Thread.sleep(5000);
new Select(driver.findElement(By.id("ctl00_ContentPlaceHolder1_ddl_commodity"))).selectByVisibleText("Paddy");
Thread.sleep(5000);
driver.findElement(By.id("ctl00_ContentPlaceHolder1_txt_rate")).sendKeys("27/03/2014");
Thread.sleep(5000);
driver.findElement(By.id("ctl00_ContentPlaceHolder1_btn_show")).click();
Thread.sleep(5000);
driver.close();
}
适用于FireFox（29.0）和Chrome（34.0）驱动程序。我使用了以下jar-s：
您应该检查项目构建路径并添加相应的jar-s。但是如果打开它，你可以在selenium-server-standalone-2.XY.0.jar中找到缺少的类文件：selenium-server-standalone-2.41.0.jar \ org \ apache \ _http / p>
另一种方法是使用包含缺少的类文件的httpcore.jar（httpcore-4.3.jar）。
答案 1 :(得分：0)
这实际上是因为你使用旧版本的selenium java绑定，我猜想低于2.40.0，因为这个selenium版本缺少org / apache / http / entity / ContentType （本身内部）
所以有两个解决方案。
选项1-您希望保留硒2.40.0或更低
如果您希望保留旧的selenium 2.40.0或更低，那么您必须自己将缺少的jar添加到项目中，如果您使用下面的maven是依赖项。
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>4.3</version>
</dependency>
or
link to download the hhtpcore 4.3 jar
选项2-您可以将旧的selenium 2.40.0或更低版本更新为2.53.0或最新的3.4.0
请更新到selenium 2.53.0或最新Selenium 3.4.0等新的硒版本
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
<version>2.53.0</version>
</dependency>
link for the selenium jar 2.53.0
**or**
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
<version>3.4.0</version>
</dependency>