spring 在Java中定義了變數ischeck，訪問時jsp報錯
阿新 • • 發佈：2018-12-13
可能是衝突了，把ischeck改成其他名稱就好了，我這裡把它改為了check
package springForm.test; public class TestUser { private String name; private String password; private String address; //這裡不能用ischeck，jsp裡獲取不到，還有這樣的坑 private boolean check; public boolean getCheck() { return check; } public void setCheck(boolean check) { this.check = check; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } }
package springForm.test; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; 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; @Controller public class TestUserController { @RequestMapping(value="/user",method=RequestMethod.GET) public ModelAndView user() { //這裡的user對應的是jsp的檔名 /springForm/WEB-INF/jsp/user.jsp return new ModelAndView("user","command",new TestUser()); } @RequestMapping(value="/addUser",method=RequestMethod.POST) public String addUser(@ModelAttribute("SpringWeb") TestUser user,ModelMap model) { model.addAttribute("username",user.getName()); model.addAttribute("password",user.getPassword()); model.addAttribute("address_test",user.getAddress()); model.addAttribute("checkbox_test", user.getCheck()); return "userList"; } }
下面是user.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>User</title> </head> <body> <h2>使用者資訊</h2> <!-- 這裡的Action對應的是Java程式碼裡 @RequestMapping(value="/addUser,method=RequestMethod.POST) addUser的名字要一樣,不用加專案名（這裡添加了會報錯，因為路徑重複了） --> <form:form action="addUser" method="post"> <table> <tr> <td><form:label path="name">使用者名稱:</form:label></td> <td><form:input path="name" /></td> </tr> <tr> <!-- 這裡的path要與User.java中的變數明一致，不然報錯。private String password --> <td><form:label path="password">密碼：</form:label></td> <td><form:password path="password" /></td> </tr> <tr> <td><form:label path="address">地址：</form:label></td> <td><form:textarea path="address" rows="5" clos="30"/></td> </tr> <tr> <td><form:label path="check">複選框</form:label></td> <td><form:checkbox path="check"/></td> </tr> <tr> <td colspan="2"> <input type="submit" value="提交" /> </td> </tr> </table> </form:form> </body> </html>
下面是userList.jsp
<%@ 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>userList</title>
</head>
<body>
<h2>提交的使用者資訊</h2>
<table>
<tr>
<td>使用者名稱：</td>
<!-- 這個是使用新增屬性時的名字-->
<td>${username}</td>
</tr>
<tr>
<td>密碼：</td>
<td>${password}</td>
</tr>
<tr>
<td>地址：</td>
<td>${address_test }</td>
</tr>
<tr>
<td>是否已勾選</td>
<td>${checkbox_test }</td>
</tr>
</table>
</body>
</html>