weblogic 10.x 上开发restful服务

之前已经学习过 利用JAX-RS快速开发RESTful 服务，当时是jboss环境，如果原封不动的迁移到weblogic 10.x 版本，会杯具的发现应用启动失败，需要做些小调整：

项目结构如下：

需要在原来的Rest Service(本文中是MyService.java)外，再包装一层，创建一个Application的子类，本例中是 MyApplication.java，代码如下：

package yjmyzz.service;

import java.util.HashSet;
import java.util.Set;

import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;


import yjmyzz.service.rest.MyService;

@ApplicationPath("/rest")
public class MyApplication extends Application {

    public Set<Class<?>> getClasses() {
        Set<Class<?>> s = new HashSet<Class<?>>();
        s.add(MyService.class);
        
        return s;
    }
}

MyService.java的内容如下：(这与在jboss环境中的代码完全相同)

package yjmyzz.service.rest;

import javax.ws.rs.GET;

import javax.ws.rs.Path;

import javax.ws.rs.Produces;

import javax.ws.rs.core.MediaType;
import javax.xml.bind.JAXBElement;
import javax.xml.namespace.QName;

@Path("/")
public class MyService {

    final String XMLNS_NAMESPACE = "http://yjmyzz.cnblogs.com/rest/service";
    final String ROOT_NODE = "root";

    @GET
    @Path("/json/hello")
    @Produces(MediaType.APPLICATION_JSON)
    public JAXBElement<String> getHelloWorldJSON() {
        JAXBElement<String> result = new JAXBElement<String>(new QName("",
                ROOT_NODE), String.class, sayHelloWorld());
        return result;
    }

    @GET
    @Path("/xml/hello")
    @Produces(MediaType.APPLICATION_XML)
    public JAXBElement<String> getHelloWorldXML() {
        JAXBElement<String> result = new JAXBElement<String>(new QName(
                XMLNS_NAMESPACE, ROOT_NODE), String.class, sayHelloWorld());
        return result;
    }

    private String sayHelloWorld() {
        return "Hello JAX-RS-1";
    }

}

还有一个关键步骤：在webapp/WEB-INF目录下创建web.xml，内容参考如下：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd "
    version="2.5">

    <servlet>
        <servlet-name>MyService</servlet-name>
        <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>javax.ws.rs.Application</param-name>
            <param-value>yjmyzz.service.MyApplication </param-value>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>MyService</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>

</web-app>

最后附上pom.xml的内容：

<?xml version="1.0"?>

<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>org.jboss.as.quickstarts</groupId>
    <artifactId>helloworld-rs</artifactId>
    <version>7.1.2-SNAPSHOT</version>
    <packaging>war</packaging>
    <name>JBoss EAP Quickstart: helloworld-rs</name>
    <description>JBoss EAP Quickstart: Helloworld using JAX-RS</description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <version.jboss.maven.plugin>7.4.Final</version.jboss.maven.plugin>
        <version.jboss.spec.javaee.6.0>3.0.2.Final</version.jboss.spec.javaee.6.0>
        <version.war.plugin>2.1.1</version.war.plugin>
        <maven.compiler.target>1.6</maven.compiler.target>
        <maven.compiler.source>1.6</maven.compiler.source>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.jboss.spec</groupId>
                <artifactId>jboss-javaee-6.0</artifactId>
                <version>${version.jboss.spec.javaee.6.0}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-bundle</artifactId>
            <version>1.15</version>
        </dependency>
    </dependencies>

    <build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
            <plugin>
                <artifactId>maven-war-plugin</artifactId>
                <version>${version.war.plugin}</version>
                <configuration>
                    <failOnMissingWebXml>true</failOnMissingWebXml>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.jboss.as.plugins</groupId>
                <artifactId>jboss-as-maven-plugin</artifactId>
                <version>${version.jboss.maven.plugin}</version>
            </plugin>
        </plugins>
    </build>


</project>

ok，打完收工!

附示例源码下载：weblogic-rest-helloworld.zip