Java 在浏览器上使用spring mvc时,无法显示servlet发送的数据
有人能帮我回答下面的问题吗。 当我在浏览器上打开url时,servlet发送的数据{$welcomeMessage}没有打印出来 我在这个网站上尝试了前面一个类似问题(使用SpringMVC在浏览器上显示欢迎信息)中的一些选项,但似乎没有什么对我有用Java 在浏览器上使用spring mvc时,无法显示servlet发送的数据,java,spring-mvc,Java,Spring Mvc,有人能帮我回答下面的问题吗。 当我在浏览器上打开url时,servlet发送的数据{$welcomeMessage}没有打印出来 我在这个网站上尝试了前面一个类似问题(使用SpringMVC在浏览器上显示欢迎信息)中的一些选项,但似乎没有什么对我有用 Below is my code for diff files. web.xml file `<web-app id = "WebApp_ID" version = "2.4" xmlns = "http://java.sun.co
Below is my code for diff files.
web.xml file
`<web-app id = "WebApp_ID" version = "2.4"
xmlns = "http://java.sun.com/xml/ns/j2ee"
xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation = "http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>FirstSpring</display-name>
<servlet>
<servlet-name>spring-dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
`
----------------------------------------------------------------------------
Servlet file(spring-dispatcher-servlet.xml)
<?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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
<context:component-scan base-package="com.springtraining.HelloController"/>
<bean class = "org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/views/</value></property>
<property name="suffix">
<value>.jsp</value></property>
</bean>
</beans>
----------------------------------------------------------------------------
Controller class(HelloController.java)
`package com.springtraining;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;
public class HelloController extends AbstractController{
@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView modelandview = new ModelAndView("HelloPage");
modelandview.addObject("welcomeMessage", "Hi User, welcome to the first Spring MVC Application");
return modelandview;
}
}`
--------------------------------------------------------------------------------
jsp file(HelloPage.jsp)
`<html>
<body>
<h1>First Spring MVC Application Demo</h1>
<h2>${welcomeMessage}</h2>
</body>
</html>`
-----------------------------------------------------------------------------
下面是我的diff文件代码。
web.xml文件
`
初春
春季调度员
org.springframework.web.servlet.DispatcherServlet
1.
春季调度员
/
`
----------------------------------------------------------------------------
Servlet文件(springdispatcherservlet.xml)
/WEB-INF/views/
.jsp
----------------------------------------------------------------------------
控制器类(HelloController.java)
`包com.springtraining;
导入javax.servlet.http.HttpServletRequest;
导入javax.servlet.http.HttpServletResponse;
导入org.springframework.web.servlet.ModelAndView;
导入org.springframework.web.servlet.mvc.AbstractController;
公共类HelloController扩展了AbstractController{
@凌驾
受保护的模型和视图HandlerRequestInternal(HttpServletRequest,
HttpServletResponse)引发异常{
ModelAndView ModelAndView=新的ModelAndView(“HelloPage”);
addObject(“welcomeMessage”,“您好,欢迎使用第一个SpringMVC应用程序”);
返回模型和视图;
}
}`
--------------------------------------------------------------------------------
jsp文件(HelloPage.jsp)
`
第一个SpringMVC应用程序演示
${welcomeMessage}
`
-----------------------------------------------------------------------------
如果有人能帮我,那就太好了
提前感谢。您是否能够在浏览器中看到“First Spring MVC应用程序演示”或甚至没有显示?是的,我可以在浏览器中看到“First Spring MVC应用程序演示”。我对代码进行了如下修改:@Controller公共类HelloController{@RequestMapping(“/welcome”)公共模型和查看HelloWorld(){ModelAndView model=new ModelAndView(“HelloPage”);model.addObject(“msg”,“HelloWorld”);return model;}}这意味着该类应该被注释为控制器类。在进行更改后,现在我在浏览器上收到404错误。