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视频内容:

1. 从 http://tomcat.apache.org/ 下载并安装 Tomcat 6 服务器
2. 在 MyEclipse 中配置服务器
3. 在 MyEclipse 中启动/停止 Tomcat 6
4. 新建 Web 项目
5. 新建静态页面并添加 GET 和 POST 表单
6. 创建 FormServlet
7. 编写代码将参数读取出来并输出
8. 发布并测试运行, 查看发布内容
9. 页面输出汉字内容乱码问题解决 + 如何重新发布
10. POST 方式表单参数乱码解决
11. GET 方式表单参数乱码解决

下载: http://beansoft.java-cn.org/download/MyEclipse6_6.exe 9.37 MB  27分06秒

image

相关代码:

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>FormServlet</servlet-name>
    <servlet-class>servlet.FormServlet</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>FormServlet</servlet-name>
    <url-pattern>/FormServlet</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

form.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>form.html</title>
    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="this is my page">
    <meta http-equiv="content-type" content="text/html; charset=GBK">
    
    <!--<link rel="stylesheet" type="text/css" href="./styles.css">-->

  </head>
  
  <body>
    <form action="./FormServlet" method="GET">
    GET: <input name="username">
    <input type="submit">
    </form>
    
    <form action="./FormServlet" method="POST">
    POST: <input name="username">
    <input type="submit">
    </form>
  </body>
</html>

 

FormServlet.java

package servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class FormServlet extends HttpServlet {

    /**
     * Constructor of the object.
     */
    public FormServlet() {
        super();
    }

    /**
     * Destruction of the servlet. <br>
     */
    public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
        // Put your code here
    }

    /**
     * The doGet method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to get.
     * 
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
     */
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.setCharacterEncoding("GBK");
        response.setContentType("text/html;charset=GBK");
        PrintWriter out = response.getWriter();
        out
                .println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
        out.println("<HTML>");
        out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
        out.println("  <BODY>");
        out.print("   您输入的用户名是:");
        // GET 方式, 编码转换
        String username = request.getParameter("username");
        username = new String(username.getBytes("ISO8859-1"), "GBK");
        
        out.print(username);
        out.println(", using the GET method");
        out.println("  </BODY>");
        out.println("</HTML>");
        out.flush();
        out.close();
    }

    /**
     * The doPost method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to post.
     * 
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
     */
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // POST 表单参数的乱码解决
        request.setCharacterEncoding("GBK");
        
        response.setContentType("text/html;charset=GBK");
        PrintWriter out = response.getWriter();
        out
                .println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
        out.println("<HTML>");
        out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
        out.println("  <BODY>");
        out.print("   您输入的用户名是:");
        out.print(request.getParameter("username"));
        out.println(", using the POST method");
        out.println("  </BODY>");
        out.println("</HTML>");
        out.flush();
        out.close();
    }

    /**
     * Initialization of the servlet. <br>
     *
     * @throws ServletException if an error occurs
     */
    public void init() throws ServletException {
        // Put your code here
    }

}


BeanSoft 2007-10-05 16:24 发表评论

文章来源:http://www.blogjava.net/beansoft/archive/2007/10/05/150563.html

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