春天的新手(和HTML /表單等)並且長期陷入這個問題。上次提交後提交jsp表單頁面(java spring)
所以我想有一個首頁,你輸入用戶名。然後單擊提交,並將您帶到儀表板(最終,會有一個包含已連接用戶列表的頁面,一個用於發送預定義消息的提交按鈕負載 - 使用qpid jms)。我只是點擊提交,然後我得到一個錯誤(java.lang.IllegalStateException:既沒有BindingResult,也沒有bean名稱的'dashboardModel'作爲請求屬性提供的普通目標對象) 這隻會發生,如果我有dashboard.jsp中的form:form。我從字面上不知道如何解決這個問題,並嘗試了所有我能找到的東西。我的代碼是簡單,只是從一個教程修改,所以在這裏它是:
的login.jsp
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
<title>Spring MVC Form Handling</title>
</head>
<body>
<h2>Login Page:</h2>
<form:form modelAttribute="loginModel" method="POST"
action="/HelloWeb/dashboard">
<table>
<tr>
<td><form:label path="username">Name</form:label></td>
<td><form:input path="username" /></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="Submit" /></td>
</tr>
</table>
</form:form>
</body>
</html>
Login.java
package com.tutorialspoint;
public class Login {
private String username;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
}
LoginController.java
package com.tutorialspoint;
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 LoginController {
@RequestMapping(value = "/login", method = RequestMethod.GET)
public ModelAndView login() {
return new ModelAndView("login", "loginModel", new Login());
}
@RequestMapping(value = "/loggedIn", method = RequestMethod.POST) //never actually used
public String loggedIn(@ModelAttribute("Login") Login login, ModelMap model) {
model.addAttribute("username", login.getUsername());
return "dashboard";
}
}
dashboard.jsp
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
<title>DASHBOARD</title>
</head>
<body>
<table>
<tr>
<td>Dashboard</td>
<td>DASHBOARD</td>
</tr>
<tr>
<td>Username</td>
<td>${username}</td>
</tr>
<tr>
<td>variable</td>
<td>${variable}</td>
</tr>
</table>
<form:form modelAttribute="dashboardModel" method="POST"
action="/HelloWeb/dashboard">
<table>
<tr>
<td><form:label path="variable">Name</form:label></td>
<td><form:input path="variable" /></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="Submit" /></td>
</tr>
</table>
</form:form>
</body>
</html>
Dashboard.java
package com.tutorialspoint;
public class Dashboard {
private String variable;
public String getVariable() {
return variable;
}
public void setVariable(String variable) {
this.variable = variable;
}
}
DashboardController.java
package com.tutorialspoint;
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 DashboardController {
@RequestMapping(value = "/dashboard", method = RequestMethod.GET)
public ModelAndView dashboard() {
return new ModelAndView("dashboard", "dashboardModel", new Dashboard());
}
@RequestMapping(value = "/dashboard", method = RequestMethod.POST)
public String addVariable(@ModelAttribute("SpringWeb") Dashboard dashboard,
ModelMap model) {
model.addAttribute("variable", dashboard.getVariable());
return "dashboard";
}
}
感謝您的時間。
實際上它並不似乎無論什麼價值有是 - 我不知道爲什麼。例如。你可以從原始教程中看到(http://www.tutorialspoint.com/spring/spring_mvc_form_handling_example.htm)已經有了「SpringWeb」作爲@ModelAttribute,但是它只是另一個的默認「命令」,所以他們不會' t匹配。 – Phil
對不起,我錯過了一些東西。檢出編輯。 – nashuald
對不起,哪種形式? login.jsp或dashboard.jsp中的一個? – Phil