How to properly pass value from INPUT form to servlet?

Question

Java

Hello.

I'm trying to get a value from a form in a servlet

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<form method="POST" action="DinamicInsertInOracle" enctype="multipart/form-data">
    <div class="container">
        <form class="row">
            <br><br><br>
            <table class="table">
                <TR>
                    <td colspan="2"> Должно быть так
                        <div class="row">
                            <div class="col-lg-8">
                                <div class="input-group">
                                    <select class="selectpicker  show-tick form-control"  >
                                        <c:forEach var="row" items="${rs_derection.rows}">
                                            <c:set var="DIRECTION" value="${row.DIRECTION}"/>
                                            <optgroup label=${DIRECTION}>

                                                <c:forEach var="row" items="${rs_position.rows}">
                                                    <c:set var="POSITION" value="${row.POSITION}"/>
                                                    <option >${POSITION}</option>

                                                </c:forEach>
                                            </optgroup>
                                        </c:forEach>

                                    </select>
                                    <!-- /btn-group -->
                                </div>
                            </div>
                        </div>

                        <c:set var="SCRIPT">
                        select * from crm.PARAMETERS
                        </c:set>
                        <sql:query var="parameters" dataSource="jdbc/DBOracle">
                            ${SCRIPT}
                        </sql:query>


<table>
                <TR>
                    <td>
                        <div class="panel panel-default">
                            <div class="panel-heading">Основные показатели</div>
                            <table class="table">

                                <c:forEach var="row" items="${parameters.rows}">
                                    <c:set var="ID" value="${row.NUM}"/>
                                    <c:set var="SOLUTION" value="${row.SOLUTION}"/>
                                    <c:set var="PARAMETER_VALUE" value="${row.VALUE}"/>
                                    <tr>
                                        <td>  <input type="checkbox" NAME="CHECKBOX_${ID}"></td> <td style="width:50%">${SOLUTION}</td>
                                        <td><div class="input-group"><input type="text" class="form-control" NAME="TEXT_${ID}" value="${PARAMETER_VALUE}"> <span class="input-group-addon">,%</span> </div></td>
                                        <td>CHECKBOX_${ID} TEXT_${ID}</td>
                                    </tr>
                                </c:forEach>

                            </table>
                            <div class="modal-footer">
                                <!--    <button type="button" class="btn btn-info" data-dismiss="modal"><i class="glyphicon glyphicon-remove"></i> Close</button> -->
                                <button value="Save" class="btn btn-success" type="submit" id="submit"><i class="glyphicon glyphicon-inbox"></i> Сохранить</button>
                            </div>
                        </div>
    </td>
    </TR>
        </form>

I'm trying to get this value in a servlet

@WebServlet(
        name = "DinamicInsertInOracle",
        description = "Insert Data To DB",
        urlPatterns = "/check_db/DinamicInsertInOracle"
)
public class DinamicInsertInOracle extends HttpServlet {

    private String dbURL = "jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=хост)(PORT=123)))(CONNECT_DATA=(SERVICE_NAME=сири)))";
    private String dbUser = "имя";
    private String dbPass = "пароль";

    protected void doPost(HttpServletRequest request,
                          HttpServletResponse response) throws ServletException, IOException {

        request.setCharacterEncoding("UTF-8");
        response.setContentType("text/html; charset=UTF-8");
        response.setCharacterEncoding("UTF-8");

        // gets values of text fields
        String TEXT_ALL = request.getParameter("TEXT_1");

but I get NULL despite the fact that I specifically assign
value="${PARAMETER_VALUE}"

What could be the error?

Answer 1

The reason for this behavior is the use of enctype="multipart/form-data" .
Or remove enctype, because it makes no sense here,
either hang the @MultipartConfig annotation on the servlet ,
or get the request data via request.getPart()

Answer 2

It works without enctype="multipart/form-data", BUT I decided to try it anyway and request.getParts() tried to apply the following

for (Part p: request.getParts())
{
TEXT_ALL=TEXT_ALL+p.getName();
}

BUT the list of names of elements of the type
how to get and their value?
how to perform the same operations for
Thank you in advance.