Resteasy Restful框架

约定不等于承诺〃 2022-02-27 05:41 218阅读 0赞

REST即表述性状态传递（英文：Representational State Transfer，简称REST）是Roy Fielding博士在2000年他的博士论文中提出来的一种软件架构风格。它是一种针对网络应用的设计和开发方式，可以降低开发的复杂性，提高系统的可伸缩性。  
目前在三种主流的Web服务实现方案中，因为REST模式的Web服务与复杂的SOAP和XML-RPC对比来讲明显的更加简洁，越来越多的web服务开始采用REST风格设计和实现。

RESTEasy是JBoss的开源项目之一，是一个RESTful Web Services框架。RESTEasy的开发者Bill Burke同时也是JAX-RS的J2EE标准制定者之一。JAX-RS是一个JCP制订的新标准，用于规范基于HTTP的RESTful Web Services的API。

例程：

## 创建Maven项目，选择类型为maven-archetype-webapp ##

## 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>com.gf</groupId>
      <artifactId>Resteasy</artifactId>
      <packaging>war</packaging>
      <version>0.0.1-SNAPSHOT</version>
      <name>Resteasy Maven Webapp</name>
      <url>http://maven.apache.org</url>
      <dependencies>
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>3.8.1</version>
          <scope>test</scope>
        </dependency>
    	
    	<dependency>
    	    <groupId>org.jboss.resteasy</groupId>
    	    <artifactId>resteasy-client</artifactId>
    	    <version>3.0.13.Final</version>
    	</dependency>
    	
    	<dependency>
    	    <groupId>org.jboss.resteasy</groupId>
    	    <artifactId>resteasy-jaxb-provider</artifactId>
    	    <version>3.0.13.Final</version>
    	</dependency>
    	
    	<dependency>
    	    <groupId>org.jboss.spec.javax.servlet</groupId>
    	    <artifactId>jboss-servlet-api_3.1_spec</artifactId>
    	    <version>1.0.0.Final</version>
    	    <scope>provided</scope>
    	</dependency>
    	
    	<dependency>
    	    <groupId>org.jboss.resteasy</groupId>
    	    <artifactId>tjws</artifactId>
    	    <version>3.0.13.Final</version>
    	    <scope>test</scope>
    	</dependency>
    
      </dependencies>
      <build>
        <finalName>Resteasy</finalName>
            <pluginManagement>
                <plugins>
                    
                    <plugin>
                        <groupId>org.apache.tomcat.maven</groupId>
                        <artifactId>tomcat7-maven-plugin</artifactId>
                        <version>2.2</version>
                        <configuration>
                        	<path>/</path>
                            <port>8080</port>
                            <uriEncoding>utf-8</uriEncoding>
                        </configuration>
                    </plugin>
                </plugins>
    		</pluginManagement>
      </build>
    </project>

## Web.xml ##

<!DOCTYPE web-app PUBLIC
     "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
     "http://java.sun.com/dtd/web-app_2_3.dtd" >
    
    <web-app>
    	<display-name>Archetype Created Web Application</display-name>
    	<context-param>
    		<param-name>resteasy.resources</param-name>
    		<param-value>com.gf.TestBean</param-value>
    	</context-param>
    	<listener>
    		<listener-class>org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap</listener-class>
    	</listener>
    	<servlet>
    		<servlet-name>resteasy</servlet-name>
    		<servlet-class>org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher</servlet-class>
    	</servlet>
    	<servlet-mapping>
    		<servlet-name>resteasy</servlet-name>
    		<url-pattern>/*</url-pattern>
    	</servlet-mapping>
    </web-app>

## 测试类 ##

package com.gf;
    
    import javax.ws.rs.DELETE;
    import javax.ws.rs.FormParam;
    import javax.ws.rs.GET;
    import javax.ws.rs.POST;
    import javax.ws.rs.PUT;
    import javax.ws.rs.Path;
    import javax.ws.rs.PathParam;
    import javax.ws.rs.Produces;
    import javax.ws.rs.QueryParam;
    
    @Path("/testbean")
    public class TestBean 
    {
    	@GET
    	@Produces("application/json")
    	@Path("test/{id}")
    	public String get(@PathParam("id") String id)
    	{
    		return "Hi "+ id;
    	}
    
    	@Path("/test/save")
    	@POST
    	public String save(@FormParam("year") String year)
    	{
    		System.out.println("save year="+year);
    		return year;
    	}
    	
    	@Path("/test/update/{id}")
    	@PUT
    	public String update(@PathParam("id") String id,@QueryParam("name") String name)
    	{
    		System.out.println("update id="+id+",name="+name);
    		return id+","+name;
    	}
    	
    	@Path("/test/delete/{id}")
    	@DELETE
    	public String delete(@PathParam("id") String id)
    	{
    		System.out.println("delete id="+id);
    		return id;
    	}
    }

## 启动Tomcat ##

mvn tomcat7:run

## 使用Postman测试 ##

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