質問編集履歴
2
訂正
test
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test
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package sample1;
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@@ -230,8 +232,18 @@
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}
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コード
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```
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--------------------------------------------------------------------------
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doGet メソッドのrequestとresponse の引数は何を受けっと手いるのでしょうか？
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1
マークダウン訂正
test
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test
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@@ -2,36 +2,236 @@
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2
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'package sample1;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Statement;
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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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/**
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*
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* @author mori
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*
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*/
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@WebServlet("/Hello")
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public class Hello extends HttpServlet {
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private static final long serialVersionUID = 1L;
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/**
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* doGetメソッド
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* SELECT文を発行・画面に表示する
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* @param request
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* @param response
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* @throw ServletException 処理中に問題が起こったときに、Servlet がスローする可能性のある一般的な例外を定義しています。
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* @throw IOException 入出力処理の失敗、または割り込みの発生によって生成される例外
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*
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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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response.setContentType("text/html; charset=utf-8");
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PrintWriter out = response.getWriter();
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out.println("<html>");
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out.println("<body>");
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Connection conn = null;
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String url = "jdbc:mysql://localhost/training";
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String user = "root";
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String password = "ryota";
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try {
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Class.forName("com.mysql.jdbc.Driver");
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conn = DriverManager.getConnection(url, user, password);
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Statement stmt = conn.createStatement();
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String sql = "SELECT * FROM user";
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ResultSet rs = stmt.executeQuery(sql);
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out.println("<table = border=1>");
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out.println("<tr>");
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out.println("<th>");
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out.println("</th>");
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out.println("<th>");
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out.println("name");
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out.println("</th>");
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out.println("<th>");
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out.println("age");
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out.println("</th>");
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while (rs.next()) {
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int id = rs.getInt("id");
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String name = rs.getString("name");
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int age = rs.getInt("age");
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154
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155
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out.println("<tr>" + "<td>" + id + "</td>" + "<td>" + name + "</td>" + "<td>" + age + "</td>" + "<tr>");
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out.println("<br>");
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}
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out.println("</table>");
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rs.close();
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stmt.close();
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} catch (ClassNotFoundException e) {
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out.println("lassNotFoundException:" + e.getMessage());
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} catch (SQLException e) {
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out.println("SQLException:" + e.getMessage());
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} catch (Exception e) {
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out.println("Exception:" + e.getMessage());
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182
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183
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} finally {
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184
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185
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186
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187
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try {
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189
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if (conn != null) {
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190
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conn.close();
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192
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}
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194
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195
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} catch (SQLException e) {
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196
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out.println("SQLException:" + e.getMessage());
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198
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199
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}
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200
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201
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202
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203
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}
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204
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+
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205
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206
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out.println("</body>");
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208
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209
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out.println("</html>");
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210
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+
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211
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+
}
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212
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+
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213
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+
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214
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+
|
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215
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+
/**
|
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216
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+
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217
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+
* doPostメソッド
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218
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+
|
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219
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+
*
|
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220
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+
|
|
221
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+
*/
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222
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+
|
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223
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+
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224
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+
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225
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protected void doPost(HttpServletRequest request, HttpServletResponse response)
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226
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+
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227
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throws ServletException, IOException {
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228
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+
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229
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doGet(request, response);
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230
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+
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231
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+
}
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|
232
|
+
|
|
233
|
+
}'
|
|
234
|
+
|
|
5
235
|
コード
|
|
6
236
|
|
|
7
237
|
```
|
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8
|
-
|
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9
|
-
* doGetメソッド
|
|
10
|
-
|
|
11
|
-
* SELECT文を発行・画面に表示する
|
|
12
|
-
|
|
13
|
-
* @param request
|
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14
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-
|
|
15
|
-
* @param response
|
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16
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-
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17
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* @throw ServletException
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18
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-
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* @throw IOException
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-
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*
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22
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-
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*/
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-
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25
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-
protected void doGet(HttpServletRequest request, HttpServletResponse response)
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26
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-
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27
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throws ServletException, IOException {
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28
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29
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response.setContentType("text/html; charset=utf-8");
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30
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-
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31
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-
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32
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-
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33
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-
---------------------------------------------------------------------------------
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34
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-
|
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35
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-
|
|
36
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-
|
|
37
|
-
doget メソッドの request とresponse の引数はそれぞれ何を受け取っているのでしょうか？
|