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我创建了一个在 Eclipse 上工作但给了我的 servlet

“请求的资源不可用。”

在http://cs3.calstatela.edu:8080/cs3220stu48/Labs/RequestSummary在我的 tomcat 服务器上访问 时，在 Eclipse http://localhost:8080/cs3220stu48/Labs/RequestSummary上仍然有效 这是我的 Servlet 代码

package CS3220;


 import java.io.IOException;
 import java.io.PrintWriter;
 import javax.servlet.ServletException;
 import javax.servlet.annotation.WebServlet;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.util.Date;
 import java.util.Enumeration;
 import java.util.Map;


@WebServlet("/Labs/RequestSummary")
public class RequestSummary extends HttpServlet {
private static final long serialVersionUID = 1L;

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    response.setContentType("text/html");
    PrintWriter out = response.getWriter();
    Date date = new Date();
    out.println("<!DOCTYPE html>");
    out.println("<html lang =\"en\">");
    out.println("   <head>");
    out.println("       <link rel= \"stylesheet\" href=\"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css\" integrity=\"sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u\" crossorigin=\"anonymous\">");
    out.println("       <meta charset = \"UTF-8\">");
    out.println("       <title>Request Summary</title>");
    out.println("   </head>");
    out.println("   <body>");
    out.println(    "<div class=\"container\">");
    out.println("           <div class =\"jumbotron\">");
    out.println("               <h1>Request Summaray</h1>");
    out.println("           <p>");
    out.println(                "The following " + "<code>" + request.getMethod() + "</code>" + " request was sent on " + "<code>" + date.toString() + "</code>");
    out.println("           </p>");
    out.println("           </div>");
    out.println(            "<h3>Request Parameters</h3>");
    out.println(                "<table class = \"table table-bordered table-striped table-hover\">");
    out.println(                    "<thead>");
    out.println(                        "<tr>");
    out.println(                            "<td>Parameter Name</td>");
    out.println(                            "<td>Parameter Value</td>");
    out.println(                        "</tr>");
    out.println(                    "</thead>");
    Map<String, String[]> Map=request.getParameterMap();
    for(String key:Map.keySet()){
        String[] Parameter=(String[])Map.get(key);
            out.println("<tr>");
            out.println("<td>" + key + "</td>");
            out.println( "<td>");
        for(String value:Parameter){
            out.println("<span class=\"label label-info\">"+ value + "</span>");
        }
            out.println("</td>");
            out.println("</tr>");
    }
    out.println(                "</table>");
    out.println(            "<h3>Header Information</h3>");
    out.println(                "<table class = \"table table-bordered table-striped table-hover\">");
    out.println(                    "<thead>");
    out.println(                        "<tr>");
    out.println(                            "<td>Header Name</td>");
    out.println(                            "<td>Header Value</td>");
    out.println(                        "</tr>");
    out.println(                    "</thead>");
        Enumeration<String> e = request.getHeaderNames();

        while(e.hasMoreElements()) {
            String name = e.nextElement();
            String value = request.getHeader(name);
            out.println("<tr>");
            out.println("<td>" + name + "</td>");
            out.println("<td>"+ value + "</td>");
            out.println("</tr>");
            }

    out.println(                "</table>");
    out.println("       </div>");
    out.println("   </body>");
    out.println("</html>");
}



protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    doGet(request, response);
}

}

还有我的 web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns="http://java.sun.com/xml/ns/javaee" 
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" 
version="3.0">
  <display-name>cs3220stu48</display-name>
  <welcome-file-list>
  <welcome-file>index.html</welcome-file>
  <welcome-file>index.htm</welcome-file>
  <welcome-file>index.jsp</welcome-file>
  <welcome-file>default.html</welcome-file>
  <welcome-file>default.htm</welcome-file>
  <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  </web-app>

一些同学告诉我，我不应该修改我的 xml 文件，只需要调整我的 url 模式，但是我不太确定如何处理它。我也确定我将它上传到正确的目录。servlet 放入 web-inf/classes 文件夹，xml 放入 web-inf。这是我第一次使用 servlet，希望能得到一些帮助以及对未来的一些建议。

编辑：我也意识到我的代码，我放置我的java文件的地方可能是问题所在。我把 web.xml 放在 WEB-INF 和 RequestSummary.java 放在 WEB-INF/classes

编辑2：我的构建文件夹在Eclipse上似乎是空的，我相信那里应该有一个类文件夹，我检查了我的构建路径，它确实导致构建/类默认

4

1 回答 1

0

我正在将类文件上传到类文件夹，但我应该做的是上传类文件以及在 build/classes 中找到的文件夹。我惊慌失措并认为这是我的代码，但这是一个目录问题。

于 2017-09-19T18:16:36.047 回答