我是Spring和Maven的新手，并且一直在努力创建一个返回简单json字符串的Web应用程序。
我一直在关注here的教程，并从here得到了一些指示，但无法使其发挥作用。然后我读到了教程不能用于Spring 4的地方。
这是我到目前为止所拥有的。
的pom.xml
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>jsonDemo</groupId>
<artifactId>jsonDemo</artifactId>
<packaging>war</packaging>
<version>1.0</version>
<name>jsonDemo</name>
<repositories>
<repository>
<id>eap</id>
<url>http://maven.repository.redhat.com/techpreview/all</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>eap</id>
<url>http://maven.repository.redhat.com/techpreview/all</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.6</maven.compiler.source>
<maven.compiler.target>1.6</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.2-1003-jdbc4</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.25</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.1.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.5.RELEASE</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.1</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.5.1</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.5.1</version>
</dependency>
</dependencies>
<profiles>
<profile>
<!-- When built in OpenShift the 'openshift' profile will be used when
invoking mvn. -->
<!-- Use this profile for any OpenShift specific customization your app
will need. -->
<!-- By default that is to put the resulting archive into the 'webapps'
folder. -->
<!-- http://maven.apache.org/guides/mini/guide-building-for-different-environments.html -->
<id>openshift</id>
<build>
<finalName>jsonDemo</finalName>
<plugins>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<configuration>
<outputDirectory>webapps</outputDirectory>
<warName>ROOT</warName>
</configuration>
</plugin>
</plugins>
</build>
</profile>
</profiles>
</project>
的web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
metadata-complete="false">
<display-name>jsonDemo</display-name>
<servlet>
<servlet-name>rest</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>rest</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<!--<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/rest-servlet.xml</param-value>
</context-param>-->
<!--<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>-->
</web-app>
其余-servlet.xml中
<?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"
xmlns:util="http://www.springframework.org/schema/util" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">
<mvc:annotation-driven />
<context:component-scan base-package="com.webapp.demo" />
</beans>
Demo.java
public class Demo {
private long id;
private String demo;
public Demo(long id, String demo) {
this.id = id;
this.demo = demo;
}
public long getId() {
return id;
}
public String getDemo() {
return demo;
}
public void setId(long id) {
this.id = id;
}
public void setDemo(String demo) {
this.demo = demo;
}
}
DemoController.java
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@RestController
public class DemoController {
@RequestMapping(value = "/demo")
public Demo demo(Model model) {
return new Demo(1, "Demo");
}
}
要在STS中对此进行测试，我右键单击该项目，然后选择Run As - ＆gt;在服务器上运行 - ＆gt; Pivotal tc Server Developer Edition v3.0。它会打开一个包含网址http://localhost:8080/jsonDemo的浏览器。它提供HTTP状态404 - 请求的资源不可用。然后我将其更改为http://localhost:8080/demo但我仍然收到404错误。我也尝试了http://localhost:8080/jsonDemo/demo但同样的错误。
感谢任何帮助。
更新1 修改了web.xml以删除context-param和listener。
更新2 再次修改了web.xml并添加了version = 3.0。
更新3 感谢JB Nizet，我通过将DemoController的注释从@Controller更改为@RestController来实现它。
此外，我无法在Spring Tools Suite中配置的Pivotal tc服务器中使用它，因此我必须下载Wildfly 8.2.0.Final并在那里部署war文件进行测试。