Re: Can't Generate swagger.json With CXFNonSpringJaxrsServlet

[Sergey Beryozkin]

I've re-run a description_swagger2 demo on the master which uses 
CXFNonSpringJaxrsServlet and it all works there.

Something does not link between CXF 3.1.7 Swagger2Feature code and the 
way CXF 2.7.14.

I think the 'easiest' way is to debug CXF 3.1.7 Swagger2Feature 
initialization code and see what is wrong when it is called by CXF 
2.7.14 runtime - and then create a custom feature with a copy&paste of 
the 3.1.7 feature with 2.7.17 specific tweaks...

Sergey
On 04/08/16 22:26, jeffdavis wrote:
I am attempting to integrate swagger with a legacy REST service implemented
using an older version of CXF.  I've attempted several configurations but
can't get the swagger.json to generate.  Guidance on getting this resolved
is greatly appreciated.  Please see project code below:

*HelloService.java*

package swaggerRest;

import javax.ws.rs.*;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;

@Path("/sample")
@Api(value = "/sample", description = "Sample REST for Swagger Testing")
public class HelloService {
 @GET
 @Path("hello")
 @ApiOperation(value = "Get hello message", response = String.class)
 public String sayHello(){
 return "Hello World";
 }
}

*web.xml*

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns="http://java.sun.com/xml/ns/javaee";
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"; id="WebApp_ID"
version="3.0">

  <display-name>swaggerRest</display-name>

  <context-param>
    <param-name>contextParam</param-name>
    <param-value>contextParamValue</param-value>
  </context-param>

  <servlet>
    <servlet-name>CXFServlet</servlet-name>

<servlet-class>org.apache.cxf.jaxrs.servlet.CXFNonSpringJaxrsServlet</servlet-class>
    <init-param>
      <param-name>jaxrs.serviceClasses</param-name>
      <param-value>swaggerRest.HelloService</param-value>
    </init-param>
    <init-param>
      <param-name>jaxrs.features</param-name>
      <param-value>org.apache.cxf.jaxrs.swagger.Swagger2Feature
(basePath=/rest)</param-value>
    </init-param>
  </servlet>

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

*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/xsd/maven-4.0.0.xsd";>
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.test</groupId>
  <artifactId>swaggerRest</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>

  <dependencies>

    <dependency>
         <groupId>org.apache.cxf</groupId>
      <artifactId>cxf-rt-frontend-jaxrs</artifactId>
      <version>2.7.14</version>
    </dependency>
    <dependency>
      <groupId>org.apache.cxf</groupId>
      <artifactId>cxf-rt-transports-http</artifactId>
      <version>2.7.14</version>
    </dependency>
    <dependency>
      <groupId>org.apache.cxf</groupId>
      <artifactId>cxf-rt-rs-extension-providers</artifactId>
      <version>2.7.14</version>
    </dependency>
    <dependency>
      <groupId>org.apache.cxf</groupId>
      <artifactId>cxf-rt-rs-service-description</artifactId>
      <version>3.1.7</version>
    </dependency>
    <dependency>
      <groupId>org.codehaus.jackson</groupId>
      <artifactId>jackson-jaxrs</artifactId>
      <version>1.1.1</version>
    </dependency>


    <dependency>
        <groupId>io.swagger</groupId>
        <artifactId>swagger-jaxrs</artifactId>
        <version>1.5.8</version>
    </dependency>
    <dependency>
      <groupId>io.swagger</groupId>
      <artifactId>swagger-annotations</artifactId>
      <version>1.5.9</version>
    </dependency>
    <dependency>
        <groupId>org.webjars</groupId>
        <artifactId>swagger-ui</artifactId>
        <version>2.1.4</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.21</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-simple</artifactId>
        <version>1.7.21</version>
    </dependency>
    <dependency>
      <groupId>org.apache.cxf</groupId>
      <artifactId>cxf-rt-rs-service-description-swagger</artifactId>
      <version>3.1.7</version>
    </dependency>
  </dependencies>

  <build>
    <sourceDirectory>src</sourceDirectory>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.5.1</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>2.6</version>
        <configuration>
          <warSourceDirectory>WebContent</warSourceDirectory>
          <failOnMissingWebXml>false</failOnMissingWebXml>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>



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Sergey Beryozkin

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