<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>TestExample注意修改这里</groupId>
 <artifactId>TestExample注意修改这里</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 <packaging>war</packaging>
 <build>
     <sourceDirectory>src</sourceDirectory>
     <plugins>
         <plugin>
             <artifactId>maven-compiler-plugin</artifactId>
             <version>3.5.1</version>
             <configuration>
                 <source>1.8</source>
                 <target>1.8</target>
             </configuration>
         </plugin>
         <plugin>
             <artifactId>maven-war-plugin</artifactId>
             <version>2.6</version>
             <configuration>
                 <warSourceDirectory>WebContent</warSourceDirectory>
                 <failOnMissingWebXml>false</failOnMissingWebXml>
             </configuration>
         </plugin>
     </plugins>
 </build>
 <dependencies>
     <dependency>
         <groupId>asm</groupId>
         <artifactId>asm</artifactId>
         <version>[3.3.1,)</version>
     </dependency>
     <dependency>
         <groupId>com.sun.jersey</groupId>
         <artifactId>jersey-bundle</artifactId>
         <version>[1.19,)</version>
     </dependency>
     <dependency>
         <groupId>org.json</groupId>
         <artifactId>json</artifactId>
         <version>[20140107,)</version>
     </dependency>
     <dependency>
         <groupId>com.sun.jersey</groupId>
         <artifactId>jersey-server</artifactId>
         <version>[1.4,)</version>
     </dependency>
     <dependency>
         <groupId>com.sun.jersey</groupId>
         <artifactId>jersey-core</artifactId>
         <version>[1.4,)</version>
     </dependency>
     <dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
         <version>5.1.40</version>
     </dependency>
     <dependency>
         <groupId>redis.clients</groupId>
         <artifactId>jedis</artifactId>
         <version>2.8.2</version>
     </dependency>
     <dependency>
         <groupId>javax.mail</groupId>
         <artifactId>mail</artifactId>
         <version>1.4.7</version>
     </dependency>
 </dependencies>
</project>

修改web.xml文件，添加如下：

<servlet>
     <servlet-name>Jersey Web Application</servlet-name>
     <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
     <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet-mapping>
     <servlet-name>Jersey Web Application</servlet-name>
     <url-pattern>/service/*</url-pattern>
 </servlet-mapping>

添加test.Exapmle java类

 package test;
 import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 import javax.ws.rs.Produces;
 @Path("/test")
 public class Example {
     @GET
     @Path("/hello")
     @Produces("application/json")
     public String fn() {
         return "hello world";
     }
 }

clean and build project

 1. Project -> Clean
 2. Project -> Right click -> Maven -> Update Project
 3. Project -> Right click -> Run As.. -> Maven Build (option 5) -> Add "clean install" -> Run

将项目在tomcat上运行
在项目上右击-> Run as -> Run on Server

在浏览器里输入：
localhost:8080/TestExample/service/test/hello
输出hello world