java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonFactory getting this error even after adding the desired imports

Question

here is my code. I've added all the dependencies then also getting such error. google-http-client-jackson2-1.17.0-rc.jar

here in this code in getting above mentioned error at JsonFactory jsonFactory = new JacksonFactory();

import com.google.api.services.customsearch.Customsearch; import com.google.api.services.customsearch.model.Search; import com.google.api.services.customsearch.model.Result; import com.google.api.client.http.HttpRequestInitializer; import com.google.api.client.http.HttpRequest; import com.google.api.client.http.javanet.NetHttpTransport; import com.google.api.client.json.JsonFactory; import com.google.api.client.json.jackson2.JacksonFactory; protected SearchResult[] doSearch() { HttpRequestInitializer httpRequestInitializer = new HttpRequestInitializer() { @Override public void initialize(HttpRequest request) throws IOException { } }; JsonFactory jsonFactory = new JacksonFactory(); Customsearch csearch = new Customsearch( new NetHttpTransport(), jsonFactory, httpRequestInitializer); Customsearch.Cse.List listReqst; try { listReqst = csearch.cse().list(query.getQueryString()); listReqst.setKey(GOOGLE_KEY); // set the search engine ID got from API console listReqst.setCx("search engine ID"); // set the query string listReqst.setQ(query.getQueryString()); // language chosen is English for search results listReqst.setLr("lang_en"); // set hit position of first search result listReqst.setStart((long) firstResult); // set max number of search results to return listReqst.setNum((long) maxResults); //performs search Search result = listReqst.execute(); java.util.List<Result> results = result.getItems(); String urls[] = new String [result.size()]; String snippets[] = new String [result.size()]; int i=0; for (Result r : results){ urls[i] = r.getLink(); snippets[i] = r.getSnippet(); i++; } return getResults(snippets, urls, true); } catch (IOException e) { // TODO Auto-generated catch block MsgPrinter.printSearchError(e); System.exit(1); return null; } }

kindly suggest me how it should be fixed.

import com.google.api.services.customsearch.Customsearch; import com.google.api.services.customsearch.model.Search; import com.google.api.services.customsearch.model.Result; import com.google.api.client.http.HttpRequestInitializer; import com.google.api.client.http.HttpRequest; import com.google.api.client.http.javanet.NetHttpTransport; import com.google.api.client.json.JsonFactory; import com.google.api.client.json.jackson2.JacksonFactory; — user2696955
– user2696955, Commented Apr 2, 2014 at 18:12
You're getting this at run time, right? What's your class path when you run this? — Dawood ibn Kareem
– Dawood ibn Kareem, Commented Apr 2, 2014 at 18:27
You are missing com.fasterxml.jackson.core:jackson-core dependency. central.maven.org/maven2/com/fasterxml/jackson/core/… — Pavel Horal
– Pavel Horal, Commented Apr 2, 2014 at 18:32

CYMA · Accepted Answer · 2015-06-09 04:11:52Z

To answer the question directly (it was answered in the comments by Pavel). The jackson core lib dependency was missing: jackson-core-$x.y.z.jar

AlikElzin-kilaka · Accepted Answer · 2016-08-20 06:37:39Z

Happened to me when having 2 jackson versions - codehaus vs. fasterlxml. Removing the fasterxml version (that was a trans-dependency of swagger) fixed the issue.

<dependency> <groupId>io.swagger</groupId> <artifactId>swagger-jersey-jaxrs</artifactId> <version>1.5.3</version> <exclusions> <exclusion> <groupId>javax.ws.rs</groupId> <artifactId>jsr311-api</artifactId> </exclusion> <exclusion> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> </exclusion> <exclusion> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> </exclusion> <exclusion> <groupId>com.fasterxml.jackson.jaxrs</groupId> <artifactId>jackson-jaxrs-json-provider</artifactId> </exclusion> <!--<exclusion>--> <!--<groupId>com.fasterxml.jackson.datatype</groupId>--> <!--<artifactId>jackson-datatype-joda</artifactId>--> <!-- test --> </exclusions> </dependency>

Justice O. · Accepted Answer · 2015-02-09 07:06:20Z

I had a similar problem, eventually discovered it was an issue with the buildpath and dependencies. The easiest (not most efficient) is too add all the google-api-client jars to your project and it would disappear. Better way is to track and properly add all other dependencies of jacksonFactory

Community · Accepted Answer · 2020-06-20 09:12:55Z

0

Down load the Maven of jackson from here.

Then add it to your dependencies.

edited Jun 20, 2020 at 9:12

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answered Jun 30, 2017 at 23:33

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