Servlet(一)--表单提交

我就是我 2022-07-13 04:48 218阅读 0赞

web.xml配置

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
      <display-name></display-name>
    
      <servlet>
        <servlet-name>register</servlet-name>
        <servlet-class>com.amark.servlet.RegisterServlet</servlet-class>
      </servlet>   //一个Servlet可以映射多个URL
    
    <servlet-mapping> <servlet-name>register</servlet-name> <url-pattern>/servlet/RegisterServlet</url-pattern> </servlet-mapping>   <servlet-mapping>
        <servlet-name>register</servlet-name>
        <url-pattern>/register.htm</url-pattern>
      </servlet-mapping></web-app>
     
    
    
     html提交表单
       <body>
        <form name="f1" action="servlet/RegisterServlet" method="post">
          <table border="1">
            <tr>
              <td>Username:</td>
              <td><input type="text" name="username"></td>
            </tr>
            <tr>
              <td>Password:</td>
              <td><input type="password" name="password"></td>
            </tr> 
            <tr>
            	<td>Sex</td>
            	<td align="center">
            		<input type="radio" name="sex" value="1">男
            		<input type="radio" name="sex" value="2">女
            	</td>
            </tr>
            <tr>
            	<td>Job</td>
            	<td align="center">
            		<select name="job">
            			<option value="ceo">CEO</option>
            			<option value="techer">Techer</option>
            			<option value="cooker">Cooker</option>
            			<option value="student">Student</option>
            		</select>
            	</td>
            </tr>
            <tr>
            	<td>hobby</td>
            	<td align="center">
            		<input type="checkbox" name="hobby" value="1">篮球
            		<input type="checkbox" name="hobby" value="2">羽毛球
            		<input type="checkbox" name="hobby" value="3">乒乓球
            	</td>
            </tr>
            <tr>
            	<td colspan="2">
            		<textarea rows="5" cols="30" name="memo"></textarea>
            	</td>
            </tr>
            <tr>
              	<td colspan="2" align="center">
              		<input type="reset" value="Reset">
              		<input type="submit" value="Register">
              	</td>
            </tr>
          </table>
        </form>
      </body>
    
    RegisterServlet类
    
     
     public class RegisterServlet extends HttpServlet {
    
    	public void doGet(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
    		String username=request.getParameter("username");
    		String password=request.getParameter("password");
    		String sex=request.getParameter("sex");
    		String job=request.getParameter("job");
    		String []hobby=request.getParameterValues("hobby");
    		String memo=request.getParameter("memo");
    		
    		PrintWriter out=response.getWriter();
    		out.println("<html><head></head><body>");
    		out.println("username:"+username);
    		out.println("</br>password:"+password);
    		if(sex=="1")
    			out.println("</br>sex:男");
    		else if(sex=="2")
    			out.println("</br>sex:女");
    		out.println("</br>job:"+job);
    		out.println("</br>hobby:");
    		for(String temp:hobby)
    			out.println(temp);
    		out.println("</br>memo:"+memo);
    		out.println("</body></html>");
    
    	}
    
    	public void doPost(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
         //post比get安全，一般用post获取表单
    
    doGet(request, response);}}