Controller not invoked in spring-mvc
Question
I'm a beginner to spring-mvc. I was trying to create a login page using spring-mvc. But my controller is not invoked on submit button. I get the 404 error.
login.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html xmlns:th="http://www.w3.org/1999/xhtml"
xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
layout:decorator="layout/default">
<head lang="en">
<title>User Login</title>
</head>
<body>
<form method="POST" action="/SpringApplication/postLogin" >
<table>
<tr><td>User Name: </td><td><input name="userName" type="textbox"></td></tr>
<tr><td>Password: </td><td><input name="password" type="password"></td></tr>
<tr><td colspan="2" align="right"><input type="submit" value="Submit"></td></tr>
</table>
<div style="color:red">${error}</div>
</form>
</body>
</html>
LoginController.java
package core.controllers;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class LoginController {
@RequestMapping(value = "/SpringApplication/postLogin", method = RequestMethod.POST)
public String postSearch(HttpServletRequest request, Model model) {
String userName = request.getParameter("userName");
String password = request.getParameter("password");
if (userName.isEmpty() || password.isEmpty()) {
model.addAttribute("error", "Please enter some value!");
return "redirect:/";
}
model.addAttribute("msg", "success");
return "resultPage";
}
}
dispatcher-servlet.xml
<?xml version='1.0' encoding='UTF-8' ?>
<!-- was: <?xml version="1.0" encoding="UTF-8"?> -->
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>
<!--
Most controllers will use the ControllerClassNameHandlerMapping above, but
for the index controller we are using ParameterizableViewController, so we must
define an explicit mapping for it.
-->
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="login.htm">indexController</prop>
</props>
</property>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
<!--
The index controller.
-->
<bean name="indexController"
class="org.springframework.web.servlet.mvc.ParameterizableViewController"
p:viewName="login" />
</beans>
Project Structure
2 answers
solution1
0 2016-03-18 10:10:30
Your button's action is
action="/SpringApplication/postSearch"
while your controller maps
value = "/SpringApplication/postLogin"
Try to change your controller's mapping to
value = "/SpringApplication/postSearch"
edit: you seem to have fixed above issue. But your controller wants to return a jsp file called "resultPage" which is nowhere to be found in your jsp folder.
solution2
0 2016-03-18 10:11:51
You have a wrong action property on your form .
Controller is waiting for a "/SpringApplication/postLogin" request, and the form is submitting to "/SpringApplication/postSearch" .
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.