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Я очень новичок в разработке приложений Java с использованием Spring framework. Я ранее разрабатывал приложения с использованием архитектуры MVC, но эта весна действительно убивает меня.Весна с использованием Netbeans-Ни BindingResult, ни простой целевой объект для имени bean-компонента Netbeans
Я имею в виду, что я не могу получить ни одной новой вещи за меньшее время. Во всяком случае, я сталкиваюсь с очень распространенной проблемой при обработке форм. Я много часов пробовал, искал в Интернете проблемы, и никто из них не работал. Это как-то связано с Netbeans? Я не знаю.
index.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<form:form action="apptest.htm" commandName="userForm" method="POST">
Name:<form:input path="name" />
<br>
Age:<form:input path="age" />
<br>
City:<form:input path="city" />
<br>
<input type="submit" value="Submit">
<br>
</form:form>
</body>
</html>
InsertController.java
package SpringApp.Controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.portlet.ModelAndView;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import SpringApp.DAO.PeopleDAO;
import SpringApp.DAO.People;
import java.util.Map;
import org.springframework.web.bind.annotation.ModelAttribute;
@Controller
@RequestMapping("/apptest.htm")
/**
*
* @author ROHAN
*/
public class InsertController {
@RequestMapping(method = RequestMethod.GET)
public String viewRegistration(Map<String, Object> model) {
People userForm = new People();
model.put("userForm", userForm);
return "index";
}
@RequestMapping(method = RequestMethod.POST)
/*public String insertion(ModelMap modelMap) {
ApplicationContext ctx=new ClassPathXmlApplicationContext("Beans.xml");
PeopleDAO dao=(PeopleDAO)ctx.getBean("people");
int status=dao.saveEmployee(new People("Kitty",22,"khardah"));
modelMap.put("msg2","success");
return "test";
}*/
public String processRegistration(@ModelAttribute(value="userForm") People people,
Map<String, Object> model) {
model.put("name",people.getName());
model.put("city",people.getCity());
return "test";
}
}
People.java (Bean класс)
package SpringApp.DAO;
public class People {
private int id;
private String name;
private int age;
private String city;
public People()
{
super();
}
public People(String name,int age,String city)
{
this.name=name;
this.age=age;
this.city=city;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
@Override
public String toString() {
return "User [name=" + name + ", age=" + age+ ", city=" + city + "]";
}
}
диспетчеру-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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>
<context:annotation-config />
<context:component-scan base-package="SpringApp" />
<mvc:annotation-driven />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
</beans>
index.jsp - это моя страница приветствия, настроенная в web.xml. Всякий раз, когда я запускаю проект, я получаю следующее сообщение:
29-Feb-2016 02:46:14.550 SEVERE [http-nio-8035-exec-183] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [jsp] in context with path [/SpringApp] threw exception [An exception occurred processing JSP page /index.jsp at line 17
14: </head>
15: <body>
16: <form:form action="apptest.htm" commandName="userForm" method="POST">
17: Name:<form:input path="name" />
18: <br>
19: Age:<form:input path="age" />
20: <br>
Stacktrace:] with root cause
java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'userForm' available as request attribute
at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:141)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:168)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:188)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getName(AbstractDataBoundFormElementTag.java:154)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.autogenerateId(AbstractDataBoundFormElementTag.java:141)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.resolveId(AbstractDataBoundFormElementTag.java:132)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.writeDefaultAttributes(AbstractDataBoundFormElementTag.java:116)
at org.springframework.web.servlet.tags.form.AbstractHtmlElementTag.writeDefaultAttributes(AbstractHtmlElementTag.java:422)
at org.springframework.web.servlet.tags.form.InputTag.writeTagContent(InputTag.java:142)
at org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:84)
at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:80)
at org.apache.jsp.index_jsp._jspx_meth_form_005finput_005f0(index_jsp.java:228)
at org.apache.jsp.index_jsp._jspx_meth_form_005fform_005f0(index_jsp.java:180)
at org.apache.jsp.index_jsp._jspService(index_jsp.java:134)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Моя структура проекта выглядит следующим образом:
Web pages
META-INF
WEB-INF
jsp
test.jsp
dispatcher-servlet.xml
applicationContext.xml
web.xml
index.jsp(outside WEB-INF)
Source Packages
Beans.xml
SpringApp.Controllers
InsertController
SpringApp.DAO
People.java
PeopleDAO.java
test.jsp
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
Name: ${userForm.name} <br>
City: ${userForm.city}
</body>
</html>
Возможный дубликат [Ни BindingResult, ни простого целевого объекта для имени боба] (http://stackoverflow.com/questions/11463883/none-bindingresult-nor-plain-target-object-for-bean-name) –
Я пробовал все что я нашел здесь, но безрезультатно. Я чувствую, что это имеет какое-то отношение к netbeans. –