【JavaEE REST】基于第三方框架Restlet

柔情只为你懂 2022-01-09 10:21 371阅读 0赞

**准备工作：**

< 下载

下载：[http://www.restlet.org/downloads/stable][http_www.restlet.org_downloads_stable]

Edition for JavaEE -> Zip Archive

解压缩

< 添加JAR文件

将restlet/libs/目录下：org.restlet.jar文件和org.restlet.ext.servlet.jar文件添加项目Class Build Path

**1、修改web.xml文件**

添加URL模式（<url-pattern>）到Servlet的映射关系

设置Servlet的初始化参数（<init-param>），参数名（<param-name>）为org.restlet.application，参数值（<param-value>）为Application子类

示例：

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
      <display-name>RESTServer</display-name>
      <servlet>
          <servlet-name>helloworld</servlet-name>
          <servlet-class>org.restlet.ext.servlet.ServerServlet</servlet-class>
          <init-param>
              <param-name>org.restlet.application</param-name>
              <param-value>com.example.HelloWorldApplication</param-value>
          </init-param>
      </servlet>
      
      <servlet-mapping>
          <servlet-name>helloworld</servlet-name>
          <url-pattern>/*</url-pattern>
      </servlet-mapping>
    </web-app>

**2、新建Application子类和ServerResource子类**

< 新建Application子类

重写public Restlet createInboundRoot()方法，设置URL模式路由规则

示例：

import org.restlet.Application;
    import org.restlet.Restlet;
    import org.restlet.routing.Router;
    
    public class HelloWorldApplication extends Application {
    
        @Override
        public Restlet createInboundRoot() {
            Router router = new Router(getContext());
            
            router.attach("/hi", HiResource.class);
            
            return router;
        }
    
    }

< 新建ServerResource子类

新建public方法，标记@Get 等HTTP方法

示例：

package com.example;
    
    import org.restlet.resource.Get;
    import org.restlet.resource.ServerResource;
    
    
    public class HiResource extends ServerResource {
        
        @Get
        public String getHi() {
            return "Hi!";
        }
    
    }

**运行**

测试地址：

http://localhost:8080/<project-name>/hi

参考：[http://web.archive.org/web/20120120070051/http://wiki.restlet.org/docs\_2.1/13-restlet/275-restlet/312-restlet.html][http_web.archive.org_web_20120120070051_http_wiki.restlet.org_docs_2.1_13-restlet_275-restlet_312-restlet.html]

转载于:https://www.cnblogs.com/dyingbleed/archive/2013/01/22/2871228.html

[http_www.restlet.org_downloads_stable]: http://www.restlet.org/downloads/stable
[http_web.archive.org_web_20120120070051_http_wiki.restlet.org_docs_2.1_13-restlet_275-restlet_312-restlet.html]: http://web.archive.org/web/20120120070051/http://wiki.restlet.org/docs_2.1/13-restlet/275-restlet/312-restlet.html