Maven WebApp中的Jetty SERVICE_UNAVAILABLE和Eclipse中的Jersey JAX-RS一起使用

问题描述

| 在尝试在Tomcat中运行我的WebApp示例之后，没有成功，我遵循了本教程，以获取一个简单的HelloWorld JAX-RS应用程序，该应用程序在Eclipse中使用Maven运行。不幸的是，当我执行

mvn jetty:run

并在浏览器中打开

http://localhost:8088/jersey-demo/hello/

时，我只会返回：

HTTP ERROR: 503

SERVICE_UNAVAILABLE
RequestURI=/jersey-demo/hello

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.ele.api</groupId>
  <artifactId>server</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>server Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
        <groupId>javax.mail</groupId>
        <artifactId>mail</artifactId>
        <version>1.4.1</version>
        <type>jar</type>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.13</version>
        <type>jar</type>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
        <type>jar</type>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>org.jsoup</groupId>
        <artifactId>jsoup</artifactId>
        <version>1.6.0</version>
        <type>jar</type>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.16</version>
        <type>jar</type>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-server</artifactId>
        <version>1.7</version>
        <type>pom</type>
        <scope>compile</scope>
    </dependency>
  </dependencies>
  <repositories>
      <repository>
        <id>maven2-repository.java.net</id>
        <name>Java.net Repository for Maven</name>
        <url>http://download.java.net/maven/2/</url>
        <layout>default</layout>
    </repository> 
    <repository>
        <id>maven-repository.java.net</id>
        <name>Java.net Maven 1 Repository (legacy)</name>
        <url>http://download.java.net/maven/1</url>
        <layout>legacy</layout>
    </repository>
  </repositories>
    <build>
      <plugins>
        <plugin>
        <!-- JETTY 6 PLUGIN -->
        <groupId>org.mortbay.jetty</groupId>
        <artifactId>maven-jetty-plugin</artifactId>
        <version>6.1.14</version>
        <configuration>
            <scanIntervalSeconds>10</scanIntervalSeconds>
            <contextPath>/jersey-demo</contextPath>
            <connectors>
                <connector implementation=\"org.mortbay.jetty.nio.SelectChannelConnector\">
                    <port>8088</port>
                    <maxIdleTime>60000</maxIdleTime>
                </connector>
            </connectors>
            <webApp>${basedir}/target/jersey-demo</webApp>
            <requestLog implementation=\"org.mortbay.jetty.NCSARequestLog\">
                <filename>target/yyyy_mm_dd.request.log</filename>
                <retainDays>90</retainDays>
                <append>true</append>
                <extended>true</extended>
                <logTimeZone>GMT</logTimeZone>
            </requestLog>
        </configuration>
           </plugin>
       </plugins>
    </build>
</project>

web.xml

<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<web-app version=\"2.5\" 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\">
    <display-name>Jersey Demo</display-name>
    <servlet>
        <servlet-name>ServletAdaptor</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.ele.api</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>ServletAdaptor</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>30</session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

src / main / resources中的MyServlet.java

package com.ele.api

import javax.ws.rs.Consumes;
import javax.ws.rs.FormParam;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;

import org.apache.log4j.Logger;

/**
 * Jersey Demo
 */
@Path(\"/hello\")
public class MyServlet {

    private static final Logger LOGGER = Logger.getLogger(MyServlet.class);

    /**
     * 
     * @return
     */
    @GET
    @Produces(\"text/plain\")
    public String doGet() {
        return \"hello\";
    }

    /**
     * 
     * @param xml
     * @return
     */
    @POST
    @Produces(\"application/xml\")
    @Consumes({\"application/x-www-form-urlencoded\",\"multipart/form-data\"})
    public String doPost(@FormParam(\"xml\") String xml) {
        if(xml == null) { 
            LOGGER.error(\"Expected \'xml\' parameter was not found in the POST\");
            return null;
        }
        return xml;
    }

    

解决方法

        从工件球衣服务器中删除条目“ 6”，它应该可以工作。

<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-server</artifactId>
    <version>1.7</version>
    <scope>compile</scope>
</dependency>

    ,        在Eclipse中，转到

Windows

->

Preferences

->

Maven

->

User Settings

，并确保您的

.m2

目录下有指向

settings.xml

的文件。 还要检查第二个第二个字段“ 14”具有正确的存储库地址。