1. eclipse 创建 dynamic web project
2. 将jersey相关jar包放到libs目录下
3. web.xml 增加 jersey 相关内容
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>restDemo</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>Jersey REST Service</servlet-name> <servlet-class> com.sun.jersey.spi.container.servlet.ServletContainer </servlet-class> <init-param> <param-name>com.sun.jersey.config.property.packages</param-name> <param-value>com.huawei.rest.resources</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>Jersey REST Service</servlet-name> <url-pattern>/rest/*</url-pattern> </servlet-mapping> </web-app>
4. 创建 resource 类
package com.huawei.rest.resources; import javax.ws.rs.GET; import javax.ws.rs.Path; import javax.ws.rs.Produces; import javax.ws.rs.PathParam; import javax.ws.rs.core.MediaType; @Path("/hello") public class HelloResource { @GET @Produces(MediaType.TEXT_PLAIN) public String sayHello() { return "hello jersey , first demo" ; } @GET @Path("/{param}") @Produces("text/plain;charset=UTF-8") public String sayHelloToUTF8(@PathParam("param") String username) { return "Hello " + username; } @GET @Path("/getuser") @Produces(MediaType.APPLICATION_JSON) public User getUserJson() { User user = new User(); user.setAge(27); user.setUserid("005"); user.setUsername("Fmand"); return user; } }
5. 创建 user 类
package com.huawei.rest.resources; import javax.xml.bind.annotation.XmlRootElement; @XmlRootElement public class User { int age; String userid; String username; public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getUserid() { return userid; } public void setUserid(String userid) { this.userid = userid; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } }
6. 运行一下看看效果