在你的程序里配置web.xml文件。
如:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>A Simple Application</display-name>
<servlet>
<servlet-name>DisplayServlet</servlet-name>
<servlet-class>com.wrox.servlets.DisplayServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DisplayServlet</servlet-name>
<url-pattern>/Display/*</url-pattern>
</servlet-mapping>
</web-app>
DisplayServlet如下所示:
package com.wrox.servlets;import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;public class DisplayServlet extends HttpServlet { public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType("text/html");
PrintWriter out = res.getWriter();
out.println("<html><head><title>Example</title></head><body>");
out.println("Query String being processed:<p>");
out.println(req.getQueryString());
out.println("<p>");
out.println("Request Parameters:<p>"); Enumeration enumParam = req.getParameterNames();
while (enumParam.hasMoreElements()) {
String paramName = (String) enumParam.nextElement();
String paramValues[] = req.getParameterValues(paramName);
if (paramValues != null) {
for (int i = 0; i < paramValues.length; i++) {
out.println(paramName + " (" + i + "): " + paramValues[i]
+ "<p>");
}
}
}
out.println("</body></html>");
out.close();
}
}
地址栏输入:http://localhost:8080/root/DisplayServlet就可以了。
如:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>A Simple Application</display-name>
<servlet>
<servlet-name>DisplayServlet</servlet-name>
<servlet-class>com.wrox.servlets.DisplayServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DisplayServlet</servlet-name>
<url-pattern>/Display/*</url-pattern>
</servlet-mapping>
</web-app>
DisplayServlet如下所示:
package com.wrox.servlets;import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;public class DisplayServlet extends HttpServlet { public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType("text/html");
PrintWriter out = res.getWriter();
out.println("<html><head><title>Example</title></head><body>");
out.println("Query String being processed:<p>");
out.println(req.getQueryString());
out.println("<p>");
out.println("Request Parameters:<p>"); Enumeration enumParam = req.getParameterNames();
while (enumParam.hasMoreElements()) {
String paramName = (String) enumParam.nextElement();
String paramValues[] = req.getParameterValues(paramName);
if (paramValues != null) {
for (int i = 0; i < paramValues.length; i++) {
out.println(paramName + " (" + i + "): " + paramValues[i]
+ "<p>");
}
}
}
out.println("</body></html>");
out.close();
}
}
地址栏输入:http://localhost:8080/root/DisplayServlet就可以了。
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货