将 TextField 值（参数）发送到 servlet

发布于 2024-12-05 10:08:54 字数 1042 浏览 5 评论 0原文

我有 3 个文本字段（Vaadin）（DBName、DBUserName、DBPassword）我想将输入的文本从 portlet 发送到 servlet，这就是我到目前为止所得到的：

Portlet 部分：

TextField DBName;
TextField DBUserName;
TextField DBPassword;

DBName = new TextField("Enter DB Name");
DBName.setColumns(20);
DBUserName = new TextField("Enter UserName");
DBUserName.setColumns(20);
DBPassword = new TextField("Enter Password");
DBPassword.setColumns(20);
     //Button
    if(event.getSource()== Connect){
        Resource newPictureResource = new ExternalResource("http://localhost:8888/portlet/picture?UserName="+DBUserName.getValue()+"&DBPassword="+DBPassword.getValue()+"&DBName="+DBName.getValue());
        picture.setSource(newPictureResource);
        editContent.addComponent(picture);
    }

Servlet 部分：

这里没有想法，是考虑

    String UserName = request.getParameter("DBUserName");
    String Password = request.getParameter("DBPassword");
    String DataBase = request.getParameter("DBName");

我想获取已输入到文本字段的值，有什么想法吗？

原文

i have 3 TextFields (Vaadin) ( DBName, DBUserName, DBPassword) i want to send the typed in text from a portlet to a servlet , this is what i've got so far :

Portlet part:

TextField DBName;
TextField DBUserName;
TextField DBPassword;

DBName = new TextField("Enter DB Name");
DBName.setColumns(20);
DBUserName = new TextField("Enter UserName");
DBUserName.setColumns(20);
DBPassword = new TextField("Enter Password");
DBPassword.setColumns(20);
     //Button
    if(event.getSource()== Connect){
        Resource newPictureResource = new ExternalResource("http://localhost:8888/portlet/picture?UserName="+DBUserName.getValue()+"&DBPassword="+DBPassword.getValue()+"&DBName="+DBName.getValue());
        picture.setSource(newPictureResource);
        editContent.addComponent(picture);
    }

Servlet part :

no ideas here , was thinkig about

    String UserName = request.getParameter("DBUserName");
    String Password = request.getParameter("DBPassword");
    String DataBase = request.getParameter("DBName");

I want to get the Values that has been entered to the text field,
any ideas ?

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许一世地老天荒 2024-12-12 10:08:54

你的代码看起来快完成了。我只编辑了一点（我不确定你的实际问题是什么）。您可以简单地使用 java 的内置支持发布数据。您可以在 vaadin 书籍中阅读有关查询字符串的更多信息。

    TextField DBName;
    TextField DBUserName;
    TextField DBPassword;

    DBName = new TextField("Enter DB Name");
    DBName.setColumns(20);
    DBUserName = new TextField("Enter UserName");
    DBUserName.setColumns(20);
    DBPassword = new TextField("Enter Password");
    DBPassword.setColumns(20);

    Button b = new Button("Connect");
    b.setImmediate(true);
    b.addListener(new ClickListener() {

        @Override
        public void buttonClick(ClickEvent event) {
            // post form values using java url connection


        }
    })

Your code almost looks finished. I only edited it a little bit (I wasn't sure what your actual problem was). You could simply use java's built in support for posting data. You can read more about querystrings in the vaadin book.

    TextField DBName;
    TextField DBUserName;
    TextField DBPassword;

    DBName = new TextField("Enter DB Name");
    DBName.setColumns(20);
    DBUserName = new TextField("Enter UserName");
    DBUserName.setColumns(20);
    DBPassword = new TextField("Enter Password");
    DBPassword.setColumns(20);

    Button b = new Button("Connect");
    b.setImmediate(true);
    b.addListener(new ClickListener() {

        @Override
        public void buttonClick(ClickEvent event) {
            // post form values using java url connection


        }
    })

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