【Java】springmvc请求controller报404

springmvc框架请求Controller报404，代码配置如下：

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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 1：对web包中指定包中所有类进行扫描，以完成Bean创建和自动依赖注入的功能 -->
<context:component-scan base-package="com.controller" />
<mvc:annotation-driven/>
<!-- 静态资源访问      需要在头部引入标签路径 -->
<mvc:resources location="/img/" mapping="/img/**"/>
<mvc:resources location="/js/" mapping="/js/**" />
<!-- Resolves views selected for rendering by @Controllers to .jsp resources
in the /WEB-INF/views directory -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>

applicationContext.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
</beans>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<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">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.jpg</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.js</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.css</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/dispatcher-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

HelloWorldController.java

package com.controller;
import com.bean.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class HelloWorldController {
@RequestMapping(value="/test", method=RequestMethod.GET)
public String test() {
return "test";
}
@RequestMapping("/login")
public @ResponseBody
User helloWorld(@RequestParam("typeId") int typeId) {
User user= new User();
user.setUsername("zhangsan");
System.out.println(user);
return user;
}
@RequestMapping(value = "/login2", method = RequestMethod.GET)
@ResponseBody
public User login2(@RequestParam("typeId") int typeId) {
User user= new User();
user.setUsername("lisi");
System.out.println(user);
return user;
}
}

【Java】springmvc请求controller报404【Java】springmvc请求controller报404

访问路径：http://localhost:8080/FlyPig/...

找了两天了没找到问题，求大神帮忙，跪谢！

回答

404的问题。。。资源未找到。。。为什么有这个资源（已编辑保存）未找到。。。路径错了或路径写的方式错了

你的tomcat是怎么配置的？idea启动web项目是在ROOT下，要不试试去掉路径里的/FlyPig?

你的视图解析器规定的返回视图是.jsp,而你的根路径下的是html文件,

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/" />
    <property name="suffix" value=".jsp" />
</bean>

再有,你的test控制器返回的视图String是"test",而你的文件名是"Test"

你return的是test 应该是在你路径下面有一个test.jsp/test.html

在test()的return语句前打个断点，看能否进入test方法。如果可以进，说明是retrun “test” 出了问题，你配置文件没有配置 test的页面，如果进不了，说明requestMapping配置路径有问题，检查一下路径名有没有写错或漏写。最后提醒一句return "test" 不是返回一个test的字符串

我把项目改成Maven创建的springmvc，然后把css,js,image放到WEB-INF下，报红了，这个改怎么解决呢
【Java】springmvc请求controller报404

Spring MVC 资源是配置在WEB-INF下的

@Controller 也需要配置 @RequestMapping

楼主问了问题就消失啦，看到这么多人回答一个都没回复，404问题很明了了，直接改上return "你要访问页面的详细地址" 例如webcontent 下的一个test.jsp return "forward:test.jsp"

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