質問編集履歴
2
誤字の修正
test
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test
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@@ -160,7 +160,7 @@
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```java
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// 【
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// 【DBconnect.java】
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public ArrayList<LinkedHashMap<String, String>> selectToArrayList(String sql) throws SQLException {
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1
呼び出し部分について追記しました。
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test
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@@ -34,21 +34,85 @@
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```java
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// 【
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// 【sampleServlet.java】
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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try {
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p
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// sampleServletのモデル
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SampleModel im = new SampleModel ();
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// 都道府県一覧を取得
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ArrayList<LinkedHashMap<String, String>> prefList = im.GetPrefList();
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request.setAttribute("prefList", prefList);
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} catch (ClassNotFoundException | SQLException e) {
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e.printStackTrace();
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}
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RequestDispatcher dispatcher = request.getRequestDispatcher("/jsp/index.jsp");
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dispatcher.forward(request, response);
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}
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```
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```java
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// 【sampleModel.java】
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// 都道府県の一覧を取得
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public ArrayList<LinkedHashMap<String, String>> GetPrefList() throws SQLException, ClassNotFoundException {
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prefDao prefDao = new prefDao();
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p
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prefDao.DBconnectOpen();
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ArrayList<LinkedHashMap<String, String>> res = prefDao.GetPrefList();
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prefDao.DBconnectionClose();
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return res;
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}
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```
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// エラーが起こるのはこのソース
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```java
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// 【DBconnect.java】
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@@ -60,8 +124,72 @@
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-
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```
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```java
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// 【prefDao.java】
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// マスタ登録されている都道府県データを全て取得
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public ArrayList<LinkedHashMap<String, String>> GetPrefList() throws ClassNotFoundException, SQLException {
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String sql = "SELECT id, area_id, name FROM m_pref";
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ArrayList<LinkedHashMap<String, String>> al = selectToArrayList(sql);
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return al;
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}
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```
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```java
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// 【prefDao.java】
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public ArrayList<LinkedHashMap<String, String>> selectToArrayList(String sql) throws SQLException {
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try {
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PreparedStatement ps = connect.prepareStatement(sql);
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ResultSet rs = ps.executeQuery();
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～ResultSetの内容を使いやすいように作り変える処理～
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rs.close();
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return ary;
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} catch (SQLException e) {
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throw e;
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+
}
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192
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+
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+
}
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+
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195
|
+
```
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