使用java监视线程
答
你应该使用的ExecutorService和任务来完成:
class MyTask implements Runnable {
@Override
public void run() {
//do your work here
}
}
ScheduledExecutorService service = Executors.newScheduledThreadPool(NUMBER_OF_THREADS);
service.scheduleAtFixedRate(new MyTask(), 0, 30, TimeUnit.MINUTES);
答
检查出的Nagios。它是一个开源的监控服务,并且还提供了Java API。这是监视服务器的最佳方式。
但是Nagios在实施方面需要一些努力。如果这不是你的选择,那么是去ScheduledExecutorservice。
答
有很多方法可以做到这一点,但我会推荐硒这种事情。 http://docs.seleniumhq.org/projects/webdriver/
然后,您不仅可以检查服务器是否响应,还可以检查它是否显示正确的内容。
http://docs.seleniumhq.org/docs/03_webdriver.jsp#introducing-the-selenium-webdriver-api-by-example
package org.openqa.selenium.example;
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.WebDriverWait;
public class Selenium2Example {
public static void main(String[] args) {
while (1){
test();
Thread.sleep(30L*60L*1000L); //sleep for 30 mins
}
}
public static void test(){
// Create a new instance of the Firefox driver
// Notice that the remainder of the code relies on the interface,
// not the implementation.
WebDriver driver = new FirefoxDriver();
// And now use this to visit Google
driver.get("http://www.google.com");
// Alternatively the same thing can be done like this
// driver.navigate().to("http://www.google.com");
// Find the text input element by its name
WebElement element = driver.findElement(By.name("q"));
// Enter something to search for
element.sendKeys("Cheese!");
// Now submit the form. WebDriver will find the form for us from the element
element.submit();
// Check the title of the page
System.out.println("Page title is: " + driver.getTitle());
// Google's search is rendered dynamically with JavaScript.
// Wait for the page to load, timeout after 10 seconds
(new WebDriverWait(driver, 10)).until(new ExpectedCondition<Boolean>() {
public Boolean apply(WebDriver d) {
return d.getTitle().toLowerCase().startsWith("cheese!");
}
});
// Should see: "cheese! - Google Search"
System.out.println("Page title is: " + driver.getTitle());
//Close the browser
driver.quit();
}
}
+0
也使用'WebDriver driver = new HtmlUnitDriver();'如果你不想安装浏览器来运行Selenium – 2013-04-24 12:36:32
使用'Executors.newSingleThreadedScheduledExecutor'和'schedule'它的任务。 – 2013-04-24 12:29:40
然后使用Apache HTTP客户端库调用Tomcat服务器,接收响应并实现服务器是否正在运行。 – 2013-04-24 12:31:42