REST web application in Maven using Jersey

Question

I'm new in jersey and trying to create project that uses rest web service and response me the json. following is my pom.xml

<project
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
    <groupId>com.modaltestapp</groupId>
    <artifactId>modaltestapp</artifactId>
    <version>0.0.1-SNAPSHOT</version>
</parent>
<groupId>com.modaltestapp</groupId>
<artifactId>modaltestapp-api</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>modaltestapp-api Maven Webapp</name>
<url>http://maven.apache.org</url>

<properties>
    <slf4j.version>1.7.9</slf4j.version>
    <logback.version>1.1.2</logback.version>
</properties>
<dependencies>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>3.8.1</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-server</artifactId>
        <version>1.9</version>
    </dependency>



</dependencies>
<build>
    <finalName>modaltestapp-api</finalName>
</build>

web.xml

<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Restful Web Application</display-name>


<servlet>
<servlet-name>helloworld</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.modaltestapp.service</param-value>
    </init-param>
    <init-param>
        <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
        <param-value>true</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

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

And java file is:

 @GET
@Path("/print")
@Produces({ MediaType.APPLICATION_JSON }) // add MediaType.APPLICATION_XML
                                            // if you want XML as well
                                            // (don't forget
                                            // @XmlRootElement)
public List<RegistrationDto> getAllMessages() throws Exception {

    List<RegistrationDto> messages = new ArrayList<RegistrationDto>();

    RegistrationDto m = new RegistrationDto();

    m.setFirstName("Nabi");
    m.setLastName("Zamani");
    m.setAge(30);

    messages.add(m);

    System.out.println("getAllMessages(): found " + messages.size() + " message(s) on DB");

    return messages; // do not use Response object because this causes
                        // issues when generating XML automatically
}

but when I build and run app it shows me error:

 INFO: Starting Servlet Engine: Apache Tomcat/9.0.0.M21
 Jul 03, 2017 11:12:24 AM org.apache.catalina.core.ApplicationContext log
  INFO: Marking servlet [helloworld] as unavailable
 Jul 03, 2017 11:12:24 AM org.apache.catalina.core.StandardContext 
 loadOnStartup
 SEVERE: Servlet [helloworld] in web application [/modaltestapp-api] threw 
  load() exception
 java.lang.ClassNotFoundException: 
 com.sun.jersey.spi.container.servlet.ServletContainer
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1275)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1109)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:508)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:489)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:119)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1050)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:989)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4921)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5231)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1439)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1429)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:953)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:872)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1439)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1429)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:953)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:793)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.startup.Catalina.start(Catalina.java:656)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:355)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:495)

Jul 03, 2017 11:12:24 AM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-nio-8080"]
Jul 03, 2017 11:12:24 AM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-nio-8009"]
Jul 03, 2017 11:12:24 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 317 ms

How can I fix this? I'm using Apache Tomcat 9.

Aastha Jain · Answer 1 · 2020-03-10T21:08:42.080

0

You can follow this post to solve your issue.Make sure you have all the jars.I see that your pom has this maven dependency "jersey-servlet"is missing.

 <groupId>com.sun.jersey</groupId>
 <artifactId>jersey-servlet</artifactId>
 <version>1.17</version>

edited Mar 10 '20 at 21:08

answered Jul 03 '17 at 06:01

Aastha Jain

180
1
1
13

score 0 · Accepted Answer · answered Jul 03 '17 at 06:03

0

I think this thread is for same issue. You can take reference of these answers. Link : java.lang.ClassNotFoundException: com.sun.jersey.spi.container.servlet.ServletContainer

answered Jul 03 '17 at 06:03

REST web application in Maven using Jersey

2 Answers2