Java 请求的资源在spring MVC中不可用
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Requested resource is not available in spring MVC
提问by Subho
I am new to spring MVC,i am trying to deploy a hello world application in it.But I am always getting a requested resource not available error on the jsp page.I am using tomcat 7. Here I am pasting my code anyone please help..
我是 spring MVC 的新手，我正在尝试在其中部署一个 hello world 应用程序。 ..
web.xml
网页.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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>HelloWorldSpring</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
spring-servlet.xml
spring-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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
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">
<context:component-scan
base-package="net.viralpatel.spring3.controller" />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
Controller of the application
应用程序控制器
package net.viralpatel.spring3.controller;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class HelloWorldController {
@RequestMapping("/hello")
public ModelAndView helloWorld() {
String message = "Hello World, Spring 3.0!";
System.out.println(message);
return new ModelAndView("hello", "message", message);
}
}
hello.jsp
你好.jsp
<html>
<head>
<title>Spring 3.0 MVC </title>
</head>
<body>
${message}
</body>
</html>
index.jsp
索引.jsp
<html>
<head>
</head>
<body>
<a href="hello">Say Hello</a>
</body>
</html>
this is my application and I am also adding screenshot of my project structure..
这是我的应用程序，我还添加了我的项目结构的屏幕截图..
采纳答案by Rohan
The main problem was with <url-pattern>*.html</url-pattern>.
I did following changes in your code and i am able to run the same code on my machine :
主要问题在于 <url-pattern>*.html</url-pattern>.
我对您的代码进行了以下更改，并且能够在我的机器上运行相同的代码：
1) changed <url-pattern>*.html</url-pattern>to <url-pattern>/</url-pattern>
2) copied jstl-1.2.jarin libfolder.
1）改变<url-pattern>*.html</url-pattern>到<url-pattern>/</url-pattern>
2）复制jstl-1.2.jar在lib文件夹中。
回答by Ashish Jagtap
Just change your controller as follows
只需按如下方式更改您的控制器
@Controller
@RequestMapping("/hello")
public class HelloWorldController {
@RequestMapping(method = RequestMethod.GET)
public String helloWorld(ModelMap model, HttpServletRequest request) {
String message = "Hello World, Spring 3.0!";
System.out.println(message);
model.addAttribute("message", message);
return "hello";
}
}
hope this will solve your problem
希望这能解决你的问题
回答by Fenil
Once check your folder structure.. all spring jars should be copied in lib folder that is in Web-INF and import from there. That should solve your issue
检查您的文件夹结构后.. 所有 spring jar 都应复制到 Web-INF 中的 lib 文件夹中并从那里导入。那应该可以解决您的问题
回答by Witold Kaczurba
I had a similar problem and I believe it was Maven-related. What I did is I changed jstl dependency from jstl:jstl:1.2 to javax.servlet:jstl:1.2 . I do not believe that this was the reason but after Maven updated its dependencies - it started working. Then it made no difference which one I used. I think it had to do with libs being not in the right place...
我有一个类似的问题，我相信它与 Maven 相关。我所做的是将 jstl 依赖项从 jstl:jstl:1.2 更改为 javax.servlet:jstl:1.2 。我不相信这是原因，但在 Maven 更新其依赖项之后 - 它开始工作。然后我用哪一个没有区别。我认为这与 libs 不在正确的位置有关...
回答by Lakshmi Murali
Change the following in the web.xml
在 web.xml 中更改以下内容
<servlet>
<servlet-name>HelloWeb</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/HelloWeb-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>HelloWeb</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
回答by Ajay
Well i too faced this problem while following thistutorial and code above seems to be from this tutorial also,so Adding spring-webmvc-x-y-z.RELEASE.jar, and removing "asm" and "web.servlet" jars worked for me. Hope this would help someone learning spring.
好吧，我在学习本教程时也遇到了这个问题，上面的代码似乎也来自本教程，因此添加 spring-webmvc-xyz.RELEASE.jar，并删除“asm”和“web.servlet”jar 对我有用。希望这对学习spring的人有所帮助。
回答by pushpendra yadav
I felt the same issue. I added the jstl 1.2.jar and it worked for me.
我觉得同样的问题。我添加了 jstl 1.2.jar 并且它对我有用。
