使用Spring和Maven的Web应用程序不起作用

我是新的使用Spring，我试图创建一个项目，打印出你好，当我把下面的路径放在浏览器中：http://localhost:8080/FirstApp/hello，但它不起作用。该浏览器显示此：使用Spring和Maven的Web应用程序不起作用

如果我把http://localhost:8080/FirstApp/我可以看到这个

这是我的pom.xml：

<?xml version="1.0" encoding="UTF-8"?> 
<project xmlns="http://maven.apache.org/POM/4.0.0"  
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 
<modelVersion>4.0.0</modelVersion> 

<groupId>com.mycompany</groupId> 
<artifactId>FirstApp</artifactId> 
<version>1.0-SNAPSHOT</version> 
<packaging>war</packaging> 

<name>FirstApp</name> 

<properties> 
    <endorsed.dir>${project.build.directory}/endorsed</endorsed.dir> 
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
</properties> 
<parent> 
    <groupId>org.springframework.boot</groupId> 
    <artifactId>spring-boot-starter-parent</artifactId> 
    <version>1.3.2.RELEASE</version> 
</parent> 
<dependencies> 
    <dependency> 
     <groupId>javax</groupId> 
     <artifactId>javaee-web-api</artifactId> 
     <version>7.0</version> 
     <scope>provided</scope> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-webmvc</artifactId> 
    </dependency> 
    <dependency> 
     <groupId>javax.servlet</groupId> 
     <artifactId>servlet-api</artifactId> 
     <version>2.5</version> 
    </dependency> 

    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-web</artifactId> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-core</artifactId> 
    </dependency> 
</dependencies> 

<build> 
    <plugins> 
     <plugin> 
      <groupId>org.apache.maven.plugins</groupId> 
      <artifactId>maven-compiler-plugin</artifactId> 
      <version>3.1</version> 
      <configuration> 
       <source>1.7</source> 
       <target>1.7</target> 
       <compilerArguments> 
        <endorseddirs>${endorsed.dir}</endorseddirs> 
       </compilerArguments> 
      </configuration> 
     </plugin> 
     <plugin> 
      <groupId>org.apache.maven.plugins</groupId> 
      <artifactId>maven-war-plugin</artifactId> 
      <version>2.3</version> 
      <configuration> 
       <failOnMissingWebXml>false</failOnMissingWebXml> 
      </configuration> 
     </plugin> 
     <plugin> 
      <groupId>org.apache.maven.plugins</groupId> 
      <artifactId>maven-dependency-plugin</artifactId> 
      <version>2.6</version> 
      <executions> 
       <execution> 
        <phase>validate</phase> 
        <goals> 
         <goal>copy</goal> 
        </goals> 
        <configuration> 
         <outputDirectory>${endorsed.dir}</outputDirectory> 
         <silent>true</silent> 
         <artifactItems> 
          <artifactItem> 
           <groupId>javax</groupId> 
           <artifactId>javaee-endorsed-api</artifactId> 
           <version>7.0</version> 
           <type>jar</type> 
          </artifactItem> 
         </artifactItems> 
        </configuration> 
       </execution> 
      </executions> 
     </plugin> 
    </plugins> 
</build>

我web.xml

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

<web-app 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" 
version="2.4"> 

<display-name>Spring MVC Application</display-name> 

<servlet> 
    <servlet-name>spring</servlet-name> 
    <servlet-class> 
    org.springframework.web.servlet.DispatcherServlet 
    </servlet-class> 
    <load-on-startup>1</load-on-startup>

<servlet-mapping> 
    <servlet-name>spring</servlet-name> 
    <url-pattern>*.jsp</url-pattern> 
</servlet-mapping> 
<context-param> 
    <param-name>contextConfigLocation</param-name> 
    <param-value>/WEB-INF/spring-servlet.xml</param-value> 
    </context-param> 
<listener> 
    <listener-class> 
     org.springframework.web.context.ContextLoaderListener 
    </listener-class> 
</listener>

我为spring-servlet.xml（我知道我这里有更多的东西比我更需要，不得不删除一些，但我开始加入，看看这是问题但不是）：

<?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:aop="http://www.springframework.org/schema/aop" 
    xmlns:c="http://www.springframework.org/schema/c" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:flow="http://www.springframework.org/schema/webflow-config" 
    xmlns:jee="http://www.springframework.org/schema/jee" 
    xmlns:jms="http://www.springframework.org/schema/jms" 
    xmlns:mvc="http://www.springframework.org/schema/mvc" 
    xmlns:lang="http://www.springframework.org/schema/lang" 
    xmlns:osgi="http://www.springframework.org/schema/osgi" 
    xmlns:p="http://www.springframework.org/schema/p" 
    xmlns:tx="http://www.springframework.org/schema/tx" 
    xmlns:util="http://www.springframework.org/schema/util" 

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd 
     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd 
     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd 
     http://www.springframework.org/schema/webflow-config http://www.springframework.org/schema/webflow-config/spring-webflow-config-2.0.xsd 
     http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.2.xsd 
     http://www.springframework.org/schema/jms http://www.springframework.org/schema/jms/spring-jms-4.2.xsd 
     http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-4.2.xsd 
     http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi-1.2.xsd 
     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd 
     http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd 
     http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 
<mvc:annotation-driven></mvc:annotation-driven> 
<context:component-scan base-package="com.mycompany.firstapp" /> 
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
    <property name="prefix" value="/WEB-INF/jsp/" /> 
    <property name="suffix" value=".jsp" /> 
</bean> 
</beans>

我的hello.jsp

<%@ page contentType="text/html; charset=UTF-8" %> 
<html> 
<head> 
<title>Hello World</title> 
</head> 
<body> 
    <h2>${message}</h2> 
</body>

最后我Hello.java：

import org.springframework.stereotype.Controller; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RequestMethod; 

@Controller 
//@ComponentScan 
public class Hello { 
    @RequestMapping(value = "/hello", method = RequestMethod.GET) 
    public String printHello() { 
     return "hello"; 
    } 
}

这里是我的项目结构（NetBeans的）：

我不知道我有什么错。我只想“调用”java函数并在路径http://localhost:8080/FirstApp/hello中显示它。

预先感谢您。

来源

2016-02-23 Yckeb

如何创建一个索引页，然后从索引页面调用你的路径“URL”。 – yogidilip

它会工作，如果你请求'http：// localhist：8080/FirstApp/hello.jsp'你必须阅读MVC中的Dispatcher Servlet – diginoise

我相信你的servlet-mapping配置不正确。请尝试更改以下

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

而且，看着

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

您jsp目录应该是/WEB-INF/下。

然后尝试访问http://localhost:8080/FirstApp/hello

来源

2016-02-24 12:10:48

没错。谢谢！！！ – Yckeb

很高兴你的工作:)如果可能，请将此答案标记为解决方案 –

使用Spring和Maven的Web应用程序不起作用

回答

相关问题