###前提・実現したいこと
pasocon.txtのファイルを見つかるように直したい。
Servletとテキストのディレクトリ構成は以下の画像のようです。
###エラーメッセージ
java.io.FileNotFoundException: C:\Users\kaiji\workspace3.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\JyouhouKankyouJikken2\WEB-INF\pasocon.txt (指定されたファイルが見つかりません。) at java.io.FileInputStream.open0(Native Method) at java.io.FileInputStream.open(Unknown Source) at java.io.FileInputStream.<init>(Unknown Source) at SelectOptions.doPost(SelectOptions.java:52) at SelectOptions.doGet(SelectOptions.java:42) at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1132) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1539) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1495) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Unknown Source)
###該当のソースコード
SelectOption.java
Java
1 2import java.io.BufferedReader; 3import java.io.File; 4import java.io.FileInputStream; 5import java.io.FileOutputStream; 6import java.io.InputStreamReader; 7import java.io.OutputStreamWriter; 8import java.io.PrintWriter; 9 10import java.io.IOException; 11import javax.servlet.ServletException; 12import javax.servlet.annotation.WebServlet; 13import javax.servlet.http.HttpServlet; 14import javax.servlet.http.HttpServletRequest; 15import javax.servlet.http.HttpServletResponse; 16 17/** 18 * Servlet implementation class SelectOptions 19 */ 20@WebServlet("/SelectOptions") 21public class SelectOptions extends HttpServlet { 22 private static final long serialVersionUID = 1L; 23 private static final String HONTAI = "hontai"; 24 private static final String RAM = "ram"; 25 private static final String HDD = "hdd"; 26 private static final String KOUGAKUD = "kougakuD"; 27 private static final int STR_NUMBER = 7; 28 29 /** 30 * @see HttpServlet#HttpServlet() 31 */ 32 public SelectOptions() { 33 super(); 34 // TODO Auto-generated constructor stub 35 } 36 37 /** 38 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) 39 */ 40 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 41 // TODO Auto-generated method stub 42 doPost(request, response); 43 } 44 45 /** 46 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) 47 */ 48 protected void doPost(HttpServletRequest request, HttpServletResponse response) 49 throws ServletException, IOException { 50 // TODO Auto-generated method stub 51 //--- ファイルpasocon.txtから読み込み 52 File f = new File(getServletContext().getRealPath("/WEB-INF/pasocon.txt")); 53 BufferedReader in = new BufferedReader(new InputStreamReader (new FileInputStream(f), "UTF-8")); 54 String line = ""; 55 String[] str = new String[STR_NUMBER]; 56 int num = 0; // ファイルの何行目か 57 // 一行ずつ読み込む 58 while ((line = in.readLine()) != null) { 59 // 読み込んだ文字の前後の空白を取り除く 60 line = line.trim(); 61 // 読み込んだ文字が空白ならば、以降の処理を飛ばす 62 if (line.trim().equals("")) { continue; } 63 // 読み込んだ文字列を空白で分割 64 str = line.split(" "); 65 ++num; 66 //--- 読み込んだ文字列から入力フォームを作成 67 File tmp = new File(getServletContext().getRealPath( String.format("/WEB-INF/%s.html", str[0]))); 68 PrintWriter tmpOut = new PrintWriter(new OutputStreamWriter( 69 new FileOutputStream(tmp), "UTF-8")); 70 tmpOut.println("<html><head><meta charset=\"UTF-8\">"); 71 tmpOut.printf("<title>%s</title></head>", str[0]); 72 tmpOut.printf("<body><h1>%sを選んでください</h1>", str[1]); 73 tmpOut.println("<form method = 'post'>"); 74 for (int i = 1; i <= (str.length-1)/2; i++) { 75 tmpOut.printf("<input type = 'radio' name = 'answer' value = '%d'>", i); 76 tmpOut.printf("%s %s円\n", str[i], str[i+1]); 77 } 78 tmpOut.println("<br />"); 79 tmpOut.println("<input type = 'submit' value = '送る'>"); 80 tmpOut.println("<input type = 'reset' value = 'キャンセル'> 81 </form></body></html>"); 82 } 83 } 84 85} 86
pasocon.txt
本体 タワー 20000 スリム 35000 スーパースリム 50000 CPU Celeron430 4000 DuoE8400 20000 QuadQ9450 37000 QuadQ9550 62000 RAM 512MB 2000 1GB 4000 2GB 6000 4GB 9000 HDD 80GB 4000 250GB 6000 320Gb 6500 500GB 8000 1TB 20000 光学D DVD-R/RW 5000 Blu-ray 20000
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