@PathVariable在path变量{}前追加"/“时出现404错误
@PathVariable在path变量{}前追加"/“时出现404错误
提问于 2019-05-04 16:26:23
我正在编写一个简单的Spring MVC代码。我已经使用Spring4.3.6.RELEASE版本设置了该项目。我已经使用@Controller设置了一个控制器PageController.java。我在使用@PathVariable的某个urls上遇到了问题。
@RequestMapping(value = "/test2/{greeting}", method = RequestMethod.GET)
public ModelAndView test2(@PathVariable("greeting") String greeting) {
if(null == greeting) {
greeting = "This is the second default message";
}
ModelAndView mv = new ModelAndView("page");
mv.addObject("greeting", greeting);
return mv;
}当我从value = "/test2/{greeting}中删除"/“，即将其转换为value = "/test2{greeting}时，它可以正常工作。但我想附加"/“，因为我计划添加更多的路径和连接更多的模块。
我正在分享下面的代码。任何帮助都将不胜感激。
我可以使用相同的配置来使用@RequestParam fine。
PageController.java
@Controller
public class PageController {
@RequestMapping(value = "/test2/{greeting}", method = RequestMethod.GET)
public ModelAndView test2(@PathVariable("greeting") String greeting) {
if(null == greeting) {
greeting = "This is the second default message";
}
ModelAndView mv = new ModelAndView("page");
mv.addObject("greeting", greeting);
return mv;
}
}web.xml
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<display-name>Archetype Created Web Application</display-name>
<!-- Configuring the front-controller -->
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<!-- Configuring so that every request goes through the front controller -->
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>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"
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.xsd">
<context:component-scan base-package = "com.anirvana.onlineshopping.controller" />
<bean id = "viewResolver"
class = "org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name = "prefix" value = "WEB-INF/views/" />
<property name = "suffix" value = ".jsp" />
</bean>
</beans>page.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<c:set var="contextRoot" value="${pageContext.request.contextPath}"/>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Online Shopping</title>
</head>
<body>
${contextRoot} says - ${greeting}
</body>
</html>回答 1
Stack Overflow用户
发布于 2021-01-29 22:06:10
我认为您需要删除value = "/test2/{greeting}"语句中的{greeting}，并传递一个@RequestParam而不是@PathVariable。
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原文链接：
https://stackoverflow.com/questions/55980809
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