小编Ama*_*ngh的帖子

我正在使用GWT并希望使用java代码验证电子邮件,即使用正则表达式,但是当我使用代码时:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package org.ArosysLogin.client;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class EmailValidator{

      private Pattern pattern;
      private Matcher matcher;

      private static final String EMAIL_PATTERN =
                   "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";

      public EmailValidator(){
          pattern = Pattern.compile(EMAIL_PATTERN);
      }

      /**
       * Validate hex with regular expression
       * @param hex hex for validation
       * @return true valid hex, false invalid hex
       */
      public boolean validate(final String hex){

          matcher = pattern.matcher(hex);
          return matcher.matches(); …

我正在使用FreeTextBox控件

在asp.net.当我在我的代码中获取它的文本时,我得到所有格式的Html代码.

如果我想获得实际文本(即只有没有html标签的文本),那么我应该如何获得.

我在GWT中提交FormPanel时尝试调用servlet.我在form.setAction("myurl")上设置了url,并且还在web.xml上进行了映射,但是在表单上suvmit没有调用servlet.这里是代码:

public class MainEntryPoint implements EntryPoint {

  public void onModuleLoad() {
      AbsolutePanel panel=new AbsolutePanel();
      FileUpload upload = new FileUpload();
      upload.setName("file");
      final FormPanel form = new FormPanel();
      form.setWidget(panel);

 form.setMethod(FormPanel.METHOD_POST);
 form.setEncoding(FormPanel.ENCODING_MULTIPART);

 form.setAction("/NewServlet");

RootPanel.get().add(new Label("path="+GWT.getModuleBaseURL()+"/NewServlet"));

 Button sub=new Button("Submit");
   sub.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                RootPanel.get().add(new Label("In click event submiting form"));
                try{
                form.submit();
                }catch(Exception e){RootPanel.get().add(new Label(e+""));}

       }});

       form.addFormHandler(new FormHandler() {
      public void onSubmit(FormSubmitEvent event) {
        // This event is fired just before the form is submitted. We can take
        // this opportunity …

我处于需要在网络中发送arraylist但我需要以字符串形式转换它的情况.

现在在目的地,我想将此String转换为ArrayList以访问各个元素.

请告诉我如何将转换后的String(从ArrayList)转换回ArrayList.