質問編集履歴
2
ソースコードの追加
test
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@@ -294,27 +294,33 @@
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ABBREVIATION：VAT FULLNAME:Holy See (Vatican City State) REGION:Europe SUBREGION:Southern Europe
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ABBREVIATION：VCT FULLNAME:Saint Vincent and the Grenadines REGION:North America SUBREGION:Caribbean
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ABBREVIATION：VEN FULLNAME:Venezuela REGION:South America SUBREGION:South America
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ABBREVIATION：VGB FULLNAME:Virgin Islands, British REGION:North America SUBREGION:Caribbean
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ABBREVIATION：VIR FULLNAME:Virgin Islands, U.S. REGION:North America SUBREGION:Caribbean
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ABBREVIATION：VNM FULLNAME:Vietnam REGION:Asia SUBREGION:Southeast Asia
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ABBREVIATION：VUT FULLNAME:Vanuatu REGION:Oceania SUBREGION:Melanesia
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ABBREVIATION：WLF FULLNAME:Wallis and Futuna REGION:Oceania SUBREGION:Polynesia
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ABBREVIATION：WSM FULLNAME:Samoa REGION:Oceania SUBREGION:Polynesia
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ABBREVIATION：YEM FULLNAME:Yemen REGION:Asia SUBREGION:Middle East
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ABBREVIATION：YUG FULLNAME:Yugoslavia REGION:Europe SUBREGION:Southern Europe
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ABBREVIATION：ZAF FULLNAME:South Africa REGION:Africa SUBREGION:Southern Africa
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ABBREVIATION：ZMB FULLNAME:Zambia REGION:Africa SUBREGION:Eastern Africa
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ABBREVIATION：ZWE FULLNAME:Zimbabwe REGION:Africa SUBREGION:Eastern Africa
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1
ソースコードの追加
test
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test
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@@ -54,11 +54,275 @@
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54
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package test3;
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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.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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public class Test33 extends HttpServlet {
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public static void main(String[] args) {
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// TODO 自動生成されたメソッド・スタブ
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try {
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Class.forName("com.mysql.jdbc.Driver");
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Connection conn = DriverManager.getConnection(
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"jdbc:mysql://localhost:3306/world","root","root");
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Statement st = conn.createStatement();
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ResultSet rs =
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st.executeQuery("select * from country");
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while(rs.next()) {
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String id = rs.getString(1);
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String location = rs.getString(2);
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String tid = rs.getString(3);
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String time = rs.getString(4);
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System.out.println
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("ABBREVIATION："+id+" FULLNAME:"+location+" REGION:"+tid+" SUBREGION:"+time);
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127
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}
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rs.close();
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st.close();
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conn.close();
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135
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System.exit(0);
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137
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} catch (ClassNotFoundException e) {
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138
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139
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System.out.println("ドライバを読み込めませんでした "+ e);
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140
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141
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} catch (SQLException e) {
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142
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143
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System.out.println("データベース接続エラー"+ e);
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144
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145
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}
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}
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public void doGet (HttpServletRequest request, HttpServletResponse response)
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throws IOException, ServletException
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{
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response.setContentType("text/html");
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PrintWriter writer = response.getWriter();
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writer.println("<html>");
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writer.println("<head>");
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writer.println("<title>Sample Application Servlet Page</title>");
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writer.println("</head>");
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writer.println("<body bgcolor=white>");
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writer.println("<table border=\"0\">");
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writer.println("<tr>");
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writer.println("<td>");
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writer.println("<img src=\"images/tomcat.gif\">");
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182
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183
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writer.println("</td>");
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185
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writer.println("<td>");
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186
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187
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writer.println("<h1>Sample Application Servlet</h1>");
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188
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+
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189
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writer.println("This is the output of a servlet that is part of");
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|
190
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+
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191
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+
writer.println("the Hello, World application.ssss");
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192
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+
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193
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+
writer.println("</td>");
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194
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195
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+
writer.println("</tr>");
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196
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+
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197
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writer.println("</table>");
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199
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200
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201
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+
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202
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+
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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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try {
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206
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+
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207
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+
Class.forName("com.mysql.jdbc.Driver");
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208
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+
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209
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+
Connection conn = DriverManager.getConnection(
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210
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+
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211
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+
"jdbc:mysql://localhost:3306/world","root","root");
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212
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+
|
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213
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+
Statement st = conn.createStatement();
|
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214
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+
|
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215
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+
ResultSet rs =
|
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216
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+
|
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217
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+
st.executeQuery("select * from country");
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218
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+
|
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219
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+
|
|
220
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+
|
|
221
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+
while(rs.next()) {
|
|
222
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+
|
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223
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+
String id = rs.getString(1);
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224
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+
|
|
225
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+
String location = rs.getString(2);
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226
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+
|
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227
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+
String tid = rs.getString(3);
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228
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+
|
|
229
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+
String time = rs.getString(4);
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|
230
|
+
|
|
231
|
+
System.out.println
|
|
232
|
+
|
|
233
|
+
("ABBREVIATION："+id+" FULLNAME:"+location+" REGION:"+tid+" SUBREGION:"+time);
|
|
234
|
+
|
|
235
|
+
}
|
|
236
|
+
|
|
237
|
+
rs.close();
|
|
238
|
+
|
|
239
|
+
st.close();
|
|
240
|
+
|
|
241
|
+
conn.close();
|
|
242
|
+
|
|
243
|
+
System.exit(0);
|
|
244
|
+
|
|
245
|
+
} catch (ClassNotFoundException e) {
|
|
246
|
+
|
|
247
|
+
System.out.println("ドライバを読み込めませんでした "+ e);
|
|
248
|
+
|
|
249
|
+
} catch (SQLException e) {
|
|
250
|
+
|
|
251
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+
System.out.println("データベース接続エラー"+ e);
|
|
252
|
+
|
|
253
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+
}
|
|
254
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+
|
|
255
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+
|
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256
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+
|
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257
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+
|
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258
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+
|
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259
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+
}
|
|
260
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+
|
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261
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+
|
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262
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+
|
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263
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+
public void doPost (HttpServletRequest request, HttpServletResponse response)
|
|
264
|
+
|
|
265
|
+
throws IOException, ServletException
|
|
266
|
+
|
|
267
|
+
{
|
|
268
|
+
|
|
269
|
+
|
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270
|
+
|
|
271
|
+
}
|
|
272
|
+
|
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273
|
+
|
|
274
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+
|
|
275
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+
}
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276
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+
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277
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+
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278
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+
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279
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+
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280
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281
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+
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282
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283
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+
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284
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+
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285
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+
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286
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+
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287
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+
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288
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+
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57
289
|
### 試したこと
|
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58
290
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59
291
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60
292
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61
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-
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293
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+
JAVAアプリケーションで実行した場合、コンソールに下記のように出ますので、public static void main(String[] args) は正常であると思われます。
|
|
294
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+
|
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295
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+
|
|
296
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+
|
|
297
|
+
ID：VCT loction:Saint Vincent and the Grenadines tid:North America time:Caribbean
|
|
298
|
+
|
|
299
|
+
ID：VEN loction:Venezuela tid:South America time:South America
|
|
300
|
+
|
|
301
|
+
ID：VGB loction:Virgin Islands, British tid:North America time:Caribbean
|
|
302
|
+
|
|
303
|
+
ID：VIR loction:Virgin Islands, U.S. tid:North America time:Caribbean
|
|
304
|
+
|
|
305
|
+
ID：VNM loction:Vietnam tid:Asia time:Southeast Asia
|
|
306
|
+
|
|
307
|
+
ID：VUT loction:Vanuatu tid:Oceania time:Melanesia
|
|
308
|
+
|
|
309
|
+
ID：WLF loction:Wallis and Futuna tid:Oceania time:Polynesia
|
|
310
|
+
|
|
311
|
+
ID：WSM loction:Samoa tid:Oceania time:Polynesia
|
|
312
|
+
|
|
313
|
+
ID：YEM loction:Yemen tid:Asia time:Middle East
|
|
314
|
+
|
|
315
|
+
ID：YUG loction:Yugoslavia tid:Europe time:Southern Europe
|
|
316
|
+
|
|
317
|
+
ID：ZAF loction:South Africa tid:Africa time:Southern Africa
|
|
318
|
+
|
|
319
|
+
|
|
320
|
+
|
|
321
|
+
次に、Tomcatサーバで実行した場合、public void doGet (HttpServletRequest request, HttpServletResponse response)が実行されると思いますし、実際にWebページはwriter.printlnで出力したHTMLが表示されるのですが、その後にあるDBの中身の結果は表示されず、
|
|
322
|
+
|
|
323
|
+
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
|
|
324
|
+
|
|
325
|
+
とコンソールに出てしまいます。
|
|
62
326
|
|
|
63
327
|
|
|
64
328
|
|