質問編集履歴
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文法の修正
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入力フォームの値を保持したい
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CHANGED
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###
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### 解決したいこと
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今Webアプリを作っています。入力フォームに値を保持したいのですが、うまくいきません。
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表以外はうまくいったのですが、表の中の入力フォームはうまく値を保持することができませんでした
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ネットでも色々調べたのですが、そもそもtableを入力フォームにしている事例があまりなく困っています
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### 発生している問題・エラー
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1,2枚目で入力して投稿ボタンを押してエラーがあった場合1,2枚目で入力した値をそのままにしたいのですが3,4枚目のとおりうまくいってません。
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### 該当するソースコード
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```java
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<form method="POST" action="<c:url value='/purchases/new' />">
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<label for="title">現場名</label><br />
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<input type="text" name="title" value="${purchase.title}" />
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<br />
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<
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<label for="delivery_date">発注日</label><br />
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<input type="date" name="delivery_date" value="${purchase.delivery_date}" />
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<br />
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<label for="desired_delivery_date">納入希望日</label><br />
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<input type="date" name="desired_delivery_date" value="${purchase.desired_delivery_date }" />
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<br />
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<label for="delivery_plase">納品住所</label><br />
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<input type="text" name="delivery_plase" value="${login_orderer.address}" />
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<br /><br />
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表がうまく表示できないです。
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<table>
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```jsp
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<table id="purchases_form">
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<tbody>
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<tr>
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<th>品番・品名</th>
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<th>数量</th>
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<th>単位</th>
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</tr>
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<c:choose>
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<c:when test="${errorsMap != null }">
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<c:forEach items="${success }" var="success" varStatus="i">
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<tr>
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<c:choose>
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<c:when test="${success.item != null }">
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<td><input type="text" name="items" value="${success.item }"></td>
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</c:when>
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<c:otherwise>
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<td><input type="text" name="items" value=""></td>
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</c:otherwise>
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</c:choose>
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<td><input type="text" name="volumes"
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value="${success.volume }" /></td>
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<td><select name="units">
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<option value="m">ｍ</option>
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<option value="㎡">㎡</option>
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<option value="式">式</option>
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<option value="ケース">ケース</option>
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</select></td>
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</tr>
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</c:forEach>
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<c:when test="${errors != null }">
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<input type="text" name="items" value="" />
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</c:when>
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<c:otherwise>
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<c:forEach var="i" begin="0" end="9">
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<tr>
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<td><input type="text" name="items" value=""></td>
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<td><input type="text" name="volumes" value="" /></td>
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<td><select name="units">
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<option value="m">ｍ</option>
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<option value="㎡">㎡</option>
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<option value="式">式</option>
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<option value="ケース">ケース</option>
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</select></td>
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</tr>
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</c:forEach>
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</c:otherwise>
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</c:choose></td>
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<td><c:choose>
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<c:when test="${errors != null }">
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<input type="text" name="items" value="" />
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</c:choose>
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<c:otherwise>
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<input type="text" name="items" value="${purchase.units }" />
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</c:otherwise>
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</c:choose></td>
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</tr>
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</c:forEach>
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</tbody>
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</table>
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```
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```java
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package controller.purchases;
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import java.io.IOException;
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import java.sql.Date;
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import java.sql.Timestamp;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import javax.persistence.EntityManager;
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import javax.servlet.RequestDispatcher;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import models.Connection;
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import models.Contractor;
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import models.Orderer;
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import models.Purchase;
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import models.validators.PurchaseTableErrorsValidator;
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import utils.DBUtil;
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/**
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* Servlet implementation class PurchasesNewServlet
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*/
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@WebServlet("/purchases/new")
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public class PurchasesNewServlet extends HttpServlet {
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private static final long serialVersionUID = 1L;
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/**
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* @see HttpServlet#HttpServlet()
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*/
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public PurchasesNewServlet() {
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super();
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// TODO Auto-generated constructor stub
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}
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/**
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* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
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*/
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protected void doGet(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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EntityManager em = DBUtil.createEntityManager();
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Map<Integer, List<String>> errorsMap = new HashMap<Integer, List<String>>();
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List<String> errors = new ArrayList <String>();
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errors.add(null);
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Connection select_connection = (Connection) request.getSession().getAttribute("select_connection");
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em.close();
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request.setAttribute("errorsMap", errorsMap);
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request.setAttribute("connection", select_connection);
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request.setAttribute("_token", request.getSession().getId());
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Purchase p = new Purchase();
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p.setDelivery_date(new Date(System.currentTimeMillis()));
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p.setDesired_delivery_date(new Date(System.currentTimeMillis()));
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request.setAttribute("purchase", p);
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RequestDispatcher rd = request.getRequestDispatcher("/WEB-INF/views/purchases/new.jsp");
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rd.forward(request, response);
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}
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/**
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* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
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*/
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protected void doPost(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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String _token = (String) request.getParameter("_token");
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if (_token != null && _token.equals(request.getSession().getId())) {
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EntityManager em = DBUtil.createEntityManager();
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Map<Integer, List<String>> errorsMap = new HashMap<Integer, List<String>>();
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String[] itemList = (String[])request.getParameterValues("items");
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String[] volumeList = (String[])request.getParameterValues("volumes");
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List<String> errors = new ArrayList <String>();
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List<String> errorList = new ArrayList <String>();
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String title = request.getParameter("title");
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if(title == null || title.equals("")) {
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errorList.add("現場名を入力してください。");
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}
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String delivery_plase = request.getParameter("delivery_plase");
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if(delivery_plase == null || delivery_plase.equals("")) {
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errorList.add("現場住所を入力してください");
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}
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Purchase p = new Purchase();
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for (int i = 0; i < itemList.length; i++) { //フォームから入力したデータ文だけ繰り返す
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if (!itemList[i].equals("") || !volumeList[i].equals("")) {
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p.setOrderer((Orderer) request.getSession().getAttribute("login_orderer"));
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p.setContractor((Contractor) request.getSession().getAttribute("select_contractor"));
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p.setTitle(request.getParameter("title"));
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Date delivery_date = new Date(System.currentTimeMillis());
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String dd_str = request.getParameter("delivery_date");
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if (dd_str != null && !dd_str.equals("")) {
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delivery_date = Date.valueOf(request.getParameter("delivery_date"));
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}
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p.setDelivery_date(delivery_date);
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Date desired_delivery_date = new Date(System.currentTimeMillis());
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String ddd_str = request.getParameter("desired_delivery_date");
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if (ddd_str != null && !ddd_str.equals("")) {
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desired_delivery_date = Date.valueOf(request.getParameter("desired_delivery_date"));
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}
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p.setDesired_delivery_date(desired_delivery_date);
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p.setDelivery_plase(request.getParameter("delivery_plase"));
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String[] item = request.getParameterValues("items");
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p.setItem(item[i]);
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String[] volumes = request.getParameterValues("volumes");
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try {
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int volume = Integer.parseInt(volumes[i]);
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p.setVolume(volume);
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} catch(NumberFormatException e) {
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}
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String[] unit = request.getParameterValues("units");
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p.setUnit(unit[i]);
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p.setRemarks(request.getParameter("remarks"));
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Timestamp currentTime = new Timestamp(System.currentTimeMillis());
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p.setCreated_at(currentTime);
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p.setUpdated_at(currentTime);
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p.setDelete_flag(0);
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errors = PurchaseTableErrorsValidator.validate(p);
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if (errors.size() > 0) {
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errorsMap.put(i, errors);
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} else {
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em.getTransaction().begin();
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em.persist(p);
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em.getTransaction().commit();
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}
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}
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}
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em.close();
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if(errorsMap.size() > 0 || errorList.size() > 0) {
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Orderer login_orderer = (Orderer)request.getSession().getAttribute("login_orderer");
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Connection select_connection = (Connection) request.getSession().getAttribute("select_connection");
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request.setAttribute("login_orderer", login_orderer);
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request.setAttribute("connection", select_connection);
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request.setAttribute("_token", request.getSession().getId());
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request.setAttribute("errorList", errorList);
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request.setAttribute("errors", errors);
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request.setAttribute("purchase", p);
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request.setAttribute("errorsMap", errorsMap);
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request.setAttribute("flush", "入力内容にエラーがあります");
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RequestDispatcher rd = request.getRequestDispatcher("/WEB-INF/views/purchases/new.jsp");
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rd.forward(request, response);
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} else {
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request.getSession().setAttribute("flush", "登録が完了しました。");
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response.sendRedirect(request.getContextPath() + "/orderers/index");
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}
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}
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}
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}
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```
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### 試したこと
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79
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+
### 自分で試したこと
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237
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-
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80
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+
入力フォームで受け取ったものをサーブレットのpostで"items"や"volumes"をListにいれてjspで出力したり
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238
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-
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81
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+
hashmapに入れてみたりpをjspで出力したりいろいろ試した結果サーブレットではなくjspがうまく書けていないのではないかと思っています。
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239
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-
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240
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### 補足情報（FW/ツールのバージョンなど）
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241
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-
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EclipseのNeon.3 Release (4.6.3)を使っています。
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フレームワークはhibernateです。
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