TOMCAT启动（原版网上摘抄）
import java.net.URL;
import java.net.URLConnection;
import java.util.Date;
public class Detector {
private static void keepTomcatAlive() throws NullPointerException {
String s;
String t = new String("tomcat5.exe");
boolean isTomcatAlive = false;
java.io.BufferedReader in;
try {
URL url = new URL("http://localhost/heartbeat.htm");
URLConnection con = url.openConnection();
in = new java.io.BufferedReader(new java.io.InputStreamReader(con
.getInputStream()));
con.setConnectTimeout(1000);
con.setReadTimeout(4000);
while ((s = in.readLine()) != null) {
if (s.length() > 0) {
// 如果能够读取到页面则证明可用
return;
}
}
in.close();
} catch (Exception ex) {
}
try {
java.lang.Process p = java.lang.Runtime.getRuntime().exec(
"tasklist");
in = new java.io.BufferedReader(new java.io.InputStreamReader(p
.getInputStream()));
while ((s = in.readLine()) != null) {
if (s.startsWith(t)) {
isTomcatAlive = true;
break;
}
}
in.close();
} catch (Exception e) {
e.printStackTrace();
}
if (isTomcatAlive) {
System.out.println("<" + new Date()
+ "> Tomcat is alive but not response!");
stopTomcat();
}
startTomcat();
}
public static void stopTomcat() {
try {
java.lang.Process p = java.lang.Runtime.getRuntime().exec(
"net stop \"Apache Tomcat\"");
java.io.BufferedReader in = new java.io.BufferedReader(
new java.io.InputStreamReader(p.getInputStream()));
String s;
String t = "成功停止";
boolean restart = false;
while ((s = in.readLine()) != null) {
if (s.indexOf(t) != -1) {
restart = true;
break;
}
}
System.out.println("<" + new Date() + "> Tomcat is stop "
+ (restart ? "OK" : "ERROR"));
} catch (Exception e) {
e.printStackTrace();
}
}
public static void startTomcat() {
try {
java.lang.Process p = java.lang.Runtime.getRuntime().exec(
"net stop \"Apache Tomcat\"");
} catch (Exception e) {
e.printStackTrace();
}
try {
java.lang.Process p = java.lang.Runtime.getRuntime().exec(
"net start \"Apache Tomcat\"");
java.io.BufferedReader in = new java.io.BufferedReader(
new java.io.InputStreamReader(p.getInputStream()));
String s;
String t = "启动成功";
boolean restart = false;
while ((s = in.readLine()) != null) {
if (s.indexOf(t) != -1) {
restart = true;
break;
}
}
System.out.println("<" + new Date() + "> Tomcat is start "
+ (restart ? "OK" : "ERROR"));
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
while (true) {
try {
Detector.keepTomcatAlive();
Thread.sleep(30000);
} catch (Exception ex) {
}
}
}
}
import java.io.BufferedReader;
import java.io.IOException;import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.Date;
public class Detector {
//一直保持TOMCAT的方法（原来停止和开始都在这里面调用）
private static void keepTomcatAlive() throws NullPointerException {
String start="F://apache-tomcat-7.0.20//bin//startup.bat";
String end="F://apache-tomcat-7.0.20//bin//shutdown.bat";
String s;
String t = new String("Tomcat7.exe");
boolean isTomcatAlive = false;
java.io.BufferedReader in;
try {
URL url = new URL("http://localhost:8080");
URLConnection con = url.openConnection();
in = new java.io.BufferedReader(new java.io.InputStreamReader(con.getInputStream()));
con.setConnectTimeout(1000);
con.setReadTimeout(4000);
while ((s = in.readLine()) != null) {
if (s.length() > 0) {
// 如果能够读取到页面则证明可用
return;} } in.close(); } catch (Exception ex) { }
try {
java.lang.Process p = java.lang.Runtime.getRuntime().exec("tasklist");//输入命令行清单，看里面有没有tomcat
in = new java.io.BufferedReader(new java.io.InputStreamReader(p.getInputStream()));
while ((s = in.readLine()) != null) {
if (s.startsWith(t)) {
isTomcatAlive = true;
break;
}
}
in.close();
} catch (Exception e) {
e.printStackTrace();
}
if (isTomcatAlive) {
System.out.println("<" + new Date() + "> Tomcat is alive but not response!");
excuteCommand(end);
}
excuteCommand(start);}
public static void excuteCommand(String command)
{
try {
Process p = Runtime.getRuntime().exec(command);
BufferedReader br = new BufferedReader(new InputStreamReader(p
.getInputStream()));
String inline;
while ((inline = br.readLine()) != null) {
System.out.println(inline);
}
br.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//主方法
public static void main(String[] args) {
while (true) {
try {
Detector.keepTomcatAlive();
Thread.sleep(30000);
} catch (Exception ex) {
}
}
}
}