resteasy简单的项目搭建



基于resteasy版本：2.2.1.GA

http://blog.csdn.net/rnzuozuo/article/details/38349403

使用maven2.2.1作为构建和依赖管理工具

1.创建工程，配置pom.xml

mvn archetype:create -DgroupId=com.longtask.rest.easyrest -DartifactId=easyrest -DarchetypeArtifactId=maven-archetype-webapp

mvn eclipse:eclipse

注：使用m2eclipse插件可直接import

<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>4.0.0modelVersion>
  <groupId>rest.resteasygroupId>
  <artifactId>rest-resteay-demoartifactId>
  <packaging>warpackaging>
  <version>1.0version>
  <name>rest-resteay-demo Maven Webappname>
  <url>http://maven.apache.orgurl>
  <repositories>
        <repository>
            <id>java.netid>
            <url>http://download.java.net/maven/1url>
            <layout>legacylayout>
        repository>
        <repository>
            <id>maven repoid>
            <name>maven reponame>
            <url>http://repo1.maven.org/maven2/url>
        repository>

        <repository>
            <id>jbossid>
            <name>jboss reponame>
            <url>http://repository.jboss.org/nexus/content/groups/public/url>
        repository>
    repositories>
  <dependencies>
    <dependency>
            <groupId>org.jboss.resteasygroupId>
            <artifactId>resteasy-jaxrsartifactId>
            <version>2.2.1.GAversion>

            <exclusions>
                <exclusion>
                    <groupId>commons-httpclientgroupId>
                    <artifactId>commons-httpclientartifactId>
                exclusion>
                <exclusion>
                    <groupId>javax.servletgroupId>
                    <artifactId>servlet-apiartifactId>
                exclusion>
                <exclusion>
                    <groupId>javax.xml.bindgroupId>
                    <artifactId>jaxb-apiartifactId>
                exclusion>
                <exclusion>
                    <groupId>com.sun.xml.bindgroupId>
                    <artifactId>jaxb-implartifactId>
                exclusion>
            exclusions>
        dependency>

        <dependency>
            <groupId>org.jboss.resteasygroupId>
            <artifactId>resteasy-jettison-providerartifactId>
            <version>2.2.1.GAversion>
            <exclusions>
                <exclusion>
                    <groupId>javax.xml.bindgroupId>
                    <artifactId>jaxb-apiartifactId>
                exclusion>
                <exclusion>
                    <groupId>com.sun.xml.bindgroupId>
                    <artifactId>jaxb-implartifactId>
                exclusion>
                <exclusion>
                    <groupId>javax.xml.streamgroupId>
                    <artifactId>stax-apiartifactId>
                exclusion>
            exclusions>
        dependency>
    <dependency>
      <groupId>junitgroupId>
      <artifactId>junitartifactId>
      <version>3.8.1version>
      <scope>testscope>
    dependency>
  dependencies>
 <build>
        <finalName>rest-resteay-demofinalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.pluginsgroupId>
                <artifactId>maven-compiler-pluginartifactId>
                <configuration>
                    <source>1.6source>
                    <target>1.6target>
                configuration>
            plugin>
        plugins>
    build>
project>

这个不是重点：看不懂这个pom.xml没关系，也就是下载依赖包，打包，先继续往下看

2.编写jax-rs的服务类

package resteasy.server;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;

@Path(value = "echo")
public class Echo {
    @GET
    @Path(value = "/{message}")
    public String echoService(@PathParam("message") String message)
    {
        return message;
    }
}

@Path表示开启访问这个资源的路径

@GET表示响应HTTP 的get方法

@PathParam表示引用URI中得参数

详细的注解可参考我下面的参考文档

3.web.xml的配置

 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>

    <context-param>
        <param-name>resteasy.resourcesparam-name>
        <param-value>resteasy.server.Echoparam-value>
    context-param>
   <listener>
      <listener-class>
         org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap
      listener-class>
   listener>

   <servlet>
      <servlet-name>Resteasyservlet-name>
      <servlet-class>
         org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher
      servlet-class>
   servlet>

   <servlet-mapping>
      <servlet-name>Resteasyservlet-name>
      <url-pattern>/*url-pattern>
   servlet-mapping>
web-app>

配置响应的listener和servlet无非就是初始resteasy的服务（先简单理解）

3.打包部署到响应的servlet容器即可（如tomcat），然后访问http://localhost:8080/rest-resteay-demo/echo/hello,world，网页上出现hello,world则成功
hello,world可换成任意字符，同样也将返回响应的字符

注：如果不使用maven，则可以到resteasy官网下载响应jar包即可