关闭启动tomcat

lichaoyue888

在发布war文件的时候经常需要关闭启动tomcat，太麻烦了，就起了怎么在ant里实现一体化的想法

在google了一下以后找到了答案，经过验证是可行的



一、失败的解决方案，不够好

通常的想法是写一个target来实行，可是这个样子好像不太来晒艾，ant会堵塞在那里一直到tomcat挂了为止.

执行以下的ant target，你只能得到以下的结果，永远得不到"END STARTUP TOMCAT 4.1"，除非tomcat结束了
        [echo] STARTUP TOMCAT 4.1
        [exec] Using CATALINA_BASE:   C:/Tomcat4.1
        [exec] Using CATALINA_HOME:   C:/Tomcat4.1
        [exec] Using CATALINA_TMPDIR: C:/Tomcat4.1\temp
        [exec] Using JAVA_HOME:       C:/j2sdk1.4.2_02



   
   
        
        
        
     

   
   
        
        
        
     
   





二、有个强人给了一个解决办法，自写tomcat的任务

-----[build.xml]----------------




   
   
   
   
        
            
        
   
   
   
   
        
   

-----[StartServerTask.java]----------------


package org.rogerCompany;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
/**
* An Ant Task that does the following :
*
*  create a java thread,
*
*  start another Ant target in that thread. This target must be a
*  blocking target.
*
*
*/
public class StartServerTask extends Task {
    /**
     * Helper class
     */
    private StartServerHelper helper;
    /**
     * Initialization
     */
    public void init() {
        this.helper = new StartServerHelper(this);
    }
    /**
     * @see Task#execute()
     */
    public void execute() throws BuildException {
        this.helper.execute();
    }
    /**
     * Ant will automatically call this method when the "startTarget" attribute
     * of our task is used.
     *
     * @param theStartTarget the Ant target to call
     */
    public void setStartTarget(String theStartTarget) {
        this.helper.setStartTarget(theStartTarget);
    }
}
-----[StartServerHelper.java]----------------


package org.rogerCompany;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.taskdefs.CallTarget;
/**
* A helper class for an Ant Task that does the following :
*  create a java thread,
*
*  start another Ant target in that thread. This target must be a
*  blocking target.
*
*/
public class StartServerHelper implements Runnable {
    /**
     * The Ant target name that will start the blocking target.
     */
    private String startTarget;
    /**
     * The tasks that wraps around this helper class
     */
    private Task task;
    /**
     * @param theTask the Ant task that is calling this helper
     */
    public StartServerHelper(Task theTask) {
        this.task = theTask;
    }
    /**
     * @see Task#execute()
     */
    public void execute() throws BuildException {
        // Verify that a start target has been specified
        if (this.startTarget == null) {
            throw new BuildException("A startTarget Ant target name must " +
                    "be specified");
        }
        // Call the target in another thread. The called
        // target must be blocking.
        Thread thread = new Thread(this);
        thread.start();
        // We're done ... Ant will continue processing other tasks
    }
    /**
     * The thread that calls the Ant target that starts, for example, a server.
     * Must be a blocking target.
     */
    public void run() {
        // Call the Ant target using the "antcall" task.
        CallTarget callee;
        callee = (CallTarget) (this.task.getProject().createTask("antcall"));
        callee.setOwningTarget(this.task.getOwningTarget());
        callee.setTaskName(this.task.getTaskName());
        callee.setLocation(this.task.getLocation());
        callee.init();
        callee.setTarget(this.startTarget);
        callee.execute();
        // Should never reach this point as the target is blocking, unless the
        // server is stopped.
    }
    /**
     * @param theStartTarget the Ant target to call
     */
    public void setStartTarget(String theStartTarget) {
        this.startTarget = theStartTarget;
    }
}