CODEWITHSUNDEEP
javascripthtmljspservletsselect
Brian Koey
Brian Koey

Reputation: 203

Retrieve value from option html tag and pass to another servlet

Let say I have two servlet called servlet1 and servlet2.

Servet1

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException 
{
    ...
    String htmlFormat = "<h2>Choose a employee</h2>" + "<p>Employee Name: <select name=\"employeeName\" onchange=\"location = this.options[this.selectedIndex].value;\">";

    for (Employee employee: employees) {
        htmlFormat += "<option value=\"servlet2\">" + employee.getFirstName() + " " + employee.getLastName() + "</option>";
    }

    htmlFormat += "</select></p>";
    out.print(htmlFormat);     

}

As you can see, when i click on the one of the option, it lead me to a servlet2. I would like to know do i pass user's click option (employee first name + last name ) value to another servlet. I need to get the firstname and lastname on the servlet2. Please help me.. Thanks

Upvotes: 0

Views: 1362

Answers (2)

bpnolan
bpnolan

Reputation: 28

In your first servlet, have it output an html form that will POST the formdata back to the server:

<form id="usersubmit" action="servlet2"></form>

Make your selectbox part of the formdata. If you want the form to be submitted onchange you can use javascript:

<select name="employeeName" form="usersubmit" onchange="this.form.submit()">
...
</select>

Lastly the value attribute of each <option> tag should contain the values you wish to send/retrieve, so in your servlet you can write:

htmlFormat += "<option value=\" " +employee.getFirstName()+ " " +employee.getLastName()+ " \">" + employee.getFirstName() + " " + employee.getLastName() + "</option>";

This should send the value of the selected option to "servlet2". To access the value in servlet2 use:

request.getParameter("employeeName");

Upvotes: 1

Diodeus - James MacFarlane
Diodeus - James MacFarlane

Reputation: 114347

This action takes place on the client, not the server. You need to POST the HTML form back to the server and access the employeeName field from the FORMDATA.

Upvotes: 1

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