java - SpringMVC 错误-6ren

java - SpringMVC 错误

转载作者：行者123 更新时间：2023-12-01 04:39:37

案例1:我收到以下错误:

 org.apache.jasper.JasperException: An exception occurred processing JSP page /login.jsp at line 14

11: <body>
12:     
13:     
14:      <form:form  method="get" commandName="user" action="login">
15:      
16:         <form:label path="Username" /><form:input path="uname"/>
17:         <form:label path="Password" /><form:input path="password"/>


Stacktrace:
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:521)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:424)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause

java.lang.IllegalStateException: No WebApplicationContext found: no ContextLoaderListener registered?
    org.springframework.web.context.support.WebApplicationContextUtils.getRequiredWebApplicationContext(WebApplicationContextUtils.java:90)
    org.springframework.web.servlet.support.RequestContextUtils.getWebApplicationContext(RequestContextUtils.java:85)
    org.springframework.web.servlet.support.RequestContext.initContext(RequestContext.java:209)
    org.springframework.web.servlet.support.JspAwareRequestContext.initContext(JspAwareRequestContext.java:74)
    org.springframework.web.servlet.support.JspAwareRequestContext.<init>(JspAwareRequestContext.java:48)
    org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:77)
    org.apache.jsp.login_jsp._jspx_meth_form_005fform_005f0(login_jsp.java:111)
    org.apache.jsp.login_jsp._jspService(login_jsp.java:76)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

当 IAM 使用以下表格时:

<form:form  method="post" commandName="user" action="login">

        <form:label path="Username" /><form:input path="uname"/>
        <form:label path="Password" /><form:input path="password"/>

        <input type="submit" value="Submit" />
     </form:form>

案例2:当我提交以下表单后，我收到 404，我的意思是这个网址:http://localhost:8443/BugTrackingSystem/login

当 IAM 使用以下表格时:

<form action="login" method="post">
        Username: <input type="text" name="uname">
        Password: <input type="text" name="password">
        <input type="submit" value="Submit">
    </form>

其他文件:*登录 Controller :*

package com.bts.controller;


import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.validation.BindException;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractFormController;
import org.springframework.web.servlet.mvc.SimpleFormController;

import com.bts.vo.User;

public class LoginController extends SimpleFormController{


     public LoginController(){
            setCommandClass(User.class);
            setCommandName("user");
        }



     protected ModelAndView onSubmit(Object obj) throws ServletException {

         User user = (User) obj;
            System.out.println("username: "+user.getUname());


        return new ModelAndView("index","user", user);

     }


}

WEB.XML

   <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID" version="2.5">
    <display-name>BugTrackingSystem</display-name>

    <welcome-file-list>
        <welcome-file>login.jsp</welcome-file>
    </welcome-file-list>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/application-context.xml</param-value>
    </context-param>

    <listener>
        <listener-class>
            org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>

    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>
            org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>



</web-app>

USER.JAVA

package com.bts.vo;

import java.util.ArrayList;
import java.util.List;

public class User {

    public User() {

        countries = new ArrayList<String>();

        countries.add("India");
        countries.add("US");

    }

    private String uname;
    private String password;
    private List<String> countries;

    public String getUname() {
        return uname;
    }
    public void setUname(String uname) {
        this.uname = uname;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public List<String> getCountries() {
        return countries;
    }
    public void setCountries(List<String> countries) {
        this.countries = countries;
    }

}

DISPATCHER-SERVLET.XML

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">


    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:order="1">
        <property name="prefix">
            <value>/WEB-INF/jsp/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>     


</beans>

CONTROLLERS-BEANS.XML

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">



    <bean name="login" class="com.bts.controller.LoginController">
        <property name="successView" value="index" />
    </bean>

    <bean name="productDetails"
        class="com.bts.controller.ProductDetailsController">
    </bean>



</beans>

application-context.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">

  <import resource="dispatcher-servlet.xml"/>
  <import resource="controllers-beans.xml"/>
  <import resource="datasource.xml"/>
  <import resource="hibernate-beans.xml"/>


</beans>

我现在正在学习Spring，所以我遇到了上述问题，所以请给我一个解决方案，等我理解这个问题后我会使用Annotations..

最佳答案

http://viralpatel.net/blogs/spring-3-mvc-handling-forms/

http://static.springsource.org/spring/docs/2.0.x/reference/mvc.html

这个设置对我有用:

web.xml

<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>
    [...]
</web-app>

application-context.xml

<beans xmlns="http://www.springframework.org/schema/beans">
    <import resource="myOtherContext.xml"/>
</beans>

myOtherContext.xml(为了进行一些导入)

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <bean name="login" class="test.LoginController"/>
</beans>

dispatcher-context.xml (请注意，这是自动寻址的，因为我的调度程序 servlet 称为 dispatcher 并且它附加了 -context.xml 自动)

<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-3.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>

    <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="index.htm">index</prop>
                <prop key="login.htm">login</prop>
            </props>
        </property>
    </bean>

    <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          p:prefix="/WEB-INF/jsp/"
          p:suffix=".jsp" />

    <bean name="index"
          class="org.springframework.web.servlet.mvc.ParameterizableViewController"
          p:viewName="index" />

</beans>

login.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>Login</title>
    </head>
    <body>
        <form:form  method="post" commandName="user" action="login.htm">
        <form:label path="uname" /><form:input path="uname"/>
        <form:label path="password" /><form:input path="password"/>
        <input type="submit" value="Submit" />
     </form:form>
    </body>
</html>

LoginController.java

public class LoginController extends SimpleFormController {

    public LoginController() {
        setCommandClass(User.class);
        setCommandName("user");
    }

    @Override
    protected org.springframework.web.servlet.ModelAndView showForm(HttpServletRequest request, HttpServletResponse response, BindException errors, Map controlModel) throws Exception {

        return super.showForm(request, response, errors, controlModel);
    }

    @Override
    protected ModelAndView onSubmit(Object obj) throws ServletException {

        User user = (User) obj;
        System.out.println("username: " + user.getUname());
        return new ModelAndView("index", "user", user);
    }
}

关于java - SpringMVC 错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16768928/

文章推荐： amazon-web-services - AWS ECS : Run Tasks Failed Reasons : ["ATTRIBUTE"]

文章推荐： python - 如何在Django中正确显示ManyToMany ID匹配列表？

文章推荐： Python 2.7，z分数计算

SpringMVC-运行原理和源码解析
基于SpringBoot版本如下： org.springframework.boot spring-boot-starter-parent 2.5.2
SpringMVC 使用ResponseEntity封装结果集进行文件下载
@RestController public class TestController { @GetMapping("/download") public ResponseEntit
SpringMVC 参数绑定详解
概述记得之前跟前端同事联调接口的时候，后端SpringMVC需要接收数组类型的参数，然后跟前端说需要传数组类型过来。后来前端童鞋传了数组，但是后端接收不成功，联调失败。那时候由于时间关系没有仔细研究
SpringMVC 应用程序上下文层次结构
web.xml 片段: contextConfigLocation /WEB-INF/applicationContext-security.xml a
SpringMVC:RESTful案例
目录相关准备功能清单具体功能：访问首页 ①配置view-controller ②创建页面
SpringMVC @RequestBody的使用解析
Spring mvc是一个非常轻量的mvc框架，注解可以大大减少配置，让请求的拦截变得比较简单。这次记录下@RequestBody 注解接收参数尤其是数组参数的用法。关于容器的配置不再多说，这里
SpringMVC 异常处理机制与自定义异常处理方式
目录 SpringMVC默认处理的几种异常 @ResponseStatus 异常处理的顺序自定义异常类(SpringMVC的异常处理)
SpringMVC 接收前端传递的参数四种方式小结
目录 SpringMVC 接收前端传递的参数四种方式 @RequestParam 获取注解 @PathVariable获取注解 Sp
Springmvc @PathVariable的用法解析
目录 @PathVariable的用法解析问题描述解析过程动态参数使用@PathVariable
SpringMVC @NotNull校验不生效的解决方案
目录 SpringMVC @NotNull校验不生效加了两个依赖问题解决 @NotNull注解失效原因之一 Lo
springmvc—handlermapping三种映射方式
springmvc―handlermapping三种映射 handlermapping负责映射中央处理器转发给controller的映射策略，简单说就是控制中央处理器的请求触发哪一个control
SpringMVC 域对象共享数据的实现示例
目录使用ModelAndView向request域对象共享数据使用Model向request域对象共享数据使用map向request域对象共享数据
SpringMVC 整合SSM框架详解
整合SSM 环境要求环境： IDEA MySQL5.7.19 Tomcat9 Maven3.6 要求：需要熟练掌握MySQL数据库，Spring，Ja
springmvc url处理映射的三种方式集合
目录 1、SpringMVC简介 2、工作流程与介绍 3、代码截图以下组件通常使用框架提供实现： 1、Di
SpringMVC 拦截器的使用示例
简介 SpringMVC的处理器拦截器类似于Servlet开发中的过滤器Filter,用于对处理器进行预处理和后处理。开发者可以自己定义一些拦截器来实现特定的功能。过滤器
SpringMVC 中文乱码的解决方案
背景举个例子，出现中文乱码的例子：提交表单的时候。表单 ?
SpringMVC 参数绑定相关知识总结
请求进入DispatcherServlet的doDispatch后，获取HandlerMethod。然后根据HandlerMethod来确认HandlerApapter，确认后执行HandlerAd
springmvc+shiro自定义过滤器的实现代码
实现需求： 1.用户未登录，跳转到登录页，登录完成后会跳到初始访问页。 2.用户自定义处理（如需要激活），跳转到激活页面，激活完成后会跳到初始访问页。使用到的框架 springmvc 的拦
SpringMVC 如何使用注解完成登录拦截
为了实现用户登录拦截你是否写过如下代码呢? 1. 基于Filter ?
springmvc 中dao层和service层的区别说明
springmvc dao层和service层的区别首先解释面上意思，service是业务层，dao是数据访问层这个问题我曾经也有过，记得以前刚学编程的时候，都是在service里直接调用d

行者123

个人简介

我是一名优秀的程序员,十分优秀！

作者热门文章

滴滴打车优惠券免费领取

全站热门文章

首页

博学

6Ren·AI

商城

java - SpringMVC 错误