spring mvc: 密碼框
阿新 • • 發佈：2018-04-20
表單 sharp highlight str ise ati NPU java ans
以user為例，包含username, password字段.
user.java
public class User {
private String username;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
UserController.java代碼
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.ui.ModelMap;
@Controller
public class UserController {
@RequestMapping(value = "/user", method = RequestMethod.GET)
public ModelAndView user() {
return new ModelAndView("user_index", "command", new User());
}
@RequestMapping(value = "/addUser", method = RequestMethod.POST)
public String addUser(@ModelAttribute("SpringWeb")User user,
ModelMap model) {
model.addAttribute("username", user.getUsername());
model.addAttribute("password", user.getPassword());
return "user_add";
}
}
這裏的第一個服務方法user()，我們已經在ModelAndView對象中傳遞了一個名稱為“command”的空User對象，因為如果在JSP文件中使用<form:form>標簽，spring框架需要一個名稱為“command”的對象。 所以當調用user()方法時，它返回user.jsp視圖。
第二個服務方法addUser()將根據URL => HelloWeb/addUser 上的POST方法請求時調用。根據提交的信息準備模型對象。 最後從服務方法返回“userlist”視圖，這將呈現userlist.jsp視圖。
user_index.jsp 的代碼如下所示
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>添加user信息</title> </head> <body> <form:form method="post" action="/hello/addUser"> <table> <tr> <td><form:label path="username">姓名:</form:label></td> <td><form:input path="username" /></td> </tr> <tr> <td><form:label path="password">密碼</form:label></td> <td><form:password path="password"/></td> </tr> <tr> <td colspan="2"> <input type="submit" value="提交表單"/> </td> </tr> </table> </form:form> </body> </html>
user_add.jsp
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page isELIgnored="false" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>用戶信息顯示</title>
</head>
<body>
<table>
<tr>
<td>用戶名</td>
<td>${username}</td>
</tr>
<tr>
<td>密碼</td>
<td>${password}</td>
</tr>
</table>
</body>
</html>
如圖：
spring mvc: 密碼框