我在下面的表单中有时会执行第一个操作，有时会执行最后一个操作，而不是一个接一个地执行这两个操作。
形式：
<html>
<head>
</head>
<body>
<script language="Javascript">
function OnButton1()
{
document.Form1.action = "http://localhost:8084/WorldCupFinal/finalsearching1";
document.Form1.target="_blank";
document.Form1.submit();
document.Form1.action = "http://localhost:8084/SemiFinal/finalsearching1";
document.Form1.target="_blank";
document.Form1.submit();
}
</script>
<form name="Form1" method="post" target="_blank">
File Name <input type="text" name="t1" size="10" ><br />
<INPUT type="button" value="Button1"
name=name onclick="OnButton1();" >
</form>
</body>
</html>
finalsearching1是java servlet程序，它根据动作（在我的本地主机以及其他IP地址中）接受输入作为文件名搜索某个系统中的文件。
但是这个动作只能由我的servlet执行一次。我想要 一个接一个地执行这两个动作，或者有什么方法可以同时执行它们，这需要花费更少的时间。这个场景由我执行2个不同的按钮（2个动作）。我想使用一个带有单个文本框的按钮来执行它，并且会发生多个操作。
我搜索了很多，我发现这可以使用AJAX执行，或者如果可能的话使用javascript执行。 你能帮我解决一下吗？
提前感谢您的关注。
这是我的finalsearching1程序代码：
import static java.awt.SystemColor.window;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import static java.io.FileDescriptor.out;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.nio.channels.Channels;
import java.nio.channels.FileChannel;
import java.nio.channels.WritableByteChannel;
import java.nio.file.Files;
import java.util.Iterator;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FilenameUtils;
import static org.apache.tomcat.jni.Shm.buffer;
import upload.UploadDownloadFileServlet;
@WebServlet(urlPatterns = {"/finalsearching1"})
public class finalsearching1 extends HttpServlet {
private static String name,name1;
private static int a=0,p=0;
int count=0;
static URL u;
static final int BUFFER_SIZE = 1024*1024;
static HttpServletResponse response;
private static void setContentType(HttpServletResponse response) {
throw new UnsupportedOperationException("Not supported yet.");
}
private static void doGet1(String m1, HttpServletRequest request, HttpServletResponse response) {
}
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String fileName = request.getParameter("t1");
if(fileName == null || fileName.equals("")){
throw new ServletException("File Name can't be null or empty");
}
File file = new File(request.getServletContext().getRealPath("")+File.separator+fileName);
if(!file.exists()){
throw new ServletException("File doesn't exists on server.");
}
System.out.println("File location on server::"+file.getAbsolutePath());
ServletContext ctx = getServletContext();
InputStream fis = new FileInputStream(file.getAbsolutePath());
String mimeType = ctx.getMimeType(file.getAbsolutePath());
response.setContentType(mimeType != null? mimeType:"application/octet-stream");
response.setContentLength((int) file.length());
response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
ServletOutputStream os = response.getOutputStream();
byte[] bufferData = new byte[1024*1024];
int read=0;
while((read = fis.read(bufferData))!= -1){
os.write(bufferData, 0, read);
}
os.flush();
os.close();
fis.close();
System.out.println("File downloaded at client successfully");
}
private static void sendFile(HttpServletResponse response, File clientFileName) throws IOException
{
ServletOutputStream op = null;
setContentType(response);
response.setHeader("Content-Disposition", "attachment; filename=\"" + clientFileName + "\"");
}
private static ServletFileUpload uploader = null;
public static void parseAllFiles(String parentDirectory,HttpServletRequest request,HttpServletResponse response) throws IOException, Exception {
PrintWriter pr=response.getWriter();
response.setContentType("text/html");
File[] filesInDirectory = new File(parentDirectory).listFiles();
if(filesInDirectory != null){
for (File f : filesInDirectory){
if(f.isDirectory()){
parseAllFiles(f.getAbsolutePath(),request,response);
}
else if(name.equalsIgnoreCase(f.getName()))
{
pr.println("File Found with path "+f.getParentFile()+"\\"+name);
String m1=f.getParentFile()+"\\"+name;
System.out.println("File to upload: " + m1);
response.setContentType("text/html");
File file = new File(m1);
System.out.println();
String ext = "."+FilenameUtils.getExtension(m1);
System.out.println(ext);
f = File.createTempFile("tmp",ext, new File("C:\\Users\\Pankaj\\Desktop\\JADE-all-4.3.3\\WorldCupFinal\\build\\web"));
String f1=f.getName();
FileInputStream in = null;
FileOutputStream out = null;
try {
in = new FileInputStream(m1);
out = new FileOutputStream(f);
int c;
while ((c = in.read()) != -1) {
out.write(c);
}
System.out.println(c+" Hi");
}
finally {
if (in != null) {
in.close();
}
if (out != null) {
out.close();
}
}
pr.write("Hi..........");
pr.write("<br>");
pr.write("<a href=\"?t1="+f1+"\">Download "+name+"</a>");
pr.write("<br>");
a++;
}
}
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
PrintWriter pr=response.getWriter();
name=request.getParameter("t1");
if(name == null || name.equals("")){
throw new ServletException("File Name can't be null or empty");
}
System.out.println("name: "+name);
System.out.println("Starting the execution of a project :");
response.setContentType("text/html");
File[] files = File.listRoots();
for(File f : files){
try {
System.out.println(f.getPath());
System.out.println("response:"+response);
parseAllFiles(f.getPath(),request,response);
} catch (Exception ex) {
Logger.getLogger(finalsearching1.class.getName()).log(Level.SEVERE, null, ex);
}
}
if(a==0)
pr.println("File Not Found");
pr.println("Starting the Execution in system 2nd");
}
public String getServletInfo() {
return "Short description";
}
}