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I am completely a beginner at Spring (you can see that in my code :) ). I just wanted to test the class RestTemplate but I got a
ClassNotFoundException
.
So the code is:
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.web.client.RestTemplate;
public class RestClient {
private RestTemplate restTemplate;
public String getJiraIssueAsJson(){
Object o = restTemplate.getForObject(..., Object.class);
System.out.println("..."+o.getClass());
return null;
public void setRestTemplate(RestTemplate restTemplate) {
this.restTemplate = restTemplate;
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("rest-client-context.xml");
RestClient restClient = context.getBean("restClient", RestClient.class);
restClient.getJiraIssueAsJson();
context.xml
<beans ...>
<bean id="restTemplate" class="org.springframework.web.client.RestTemplate">
<property name="messageConverters">
<bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"/>
</list>
</property>
</bean>
<bean id="restClient" class="org.googlecode.happymarvin.jiraexplorer.RestClient">
<property name="restTemplate" ref="restTemplate"/>
</bean>
</beans>
pom.xml
<project ...>
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.googlecode.happymarvin</groupId>
<artifactId>parent</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>jiraminer</artifactId>
<name>Happy Marvin JIRA Miner</name>
<packaging>jar</packaging>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<jackson-version>1.9.13</jackson-version>
</properties>
</project>
parent pom.xml
<project ...>
<modelVersion>4.0.0</modelVersion>
<groupId>com.googlecode.happymarvin</groupId>
<artifactId>parent</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>
<name>Happy Marvin parent project</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<org.springframework.version>4.0.0.RELEASE</org.springframework.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${org.springframework.version}</version>
</dependency>
</dependencies>
</project>
Exception
Jan 07, 2014 10:18:24 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@730eb2f0: startup date [Tue Jan 07 10:18:24 GMT 2014]; root of context hierarchy
Jan 07, 2014 10:18:24 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [rest-client-context.xml]
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'restTemplate' defined in class path resource [rest-client-context.xml]: Cannot create inner bean 'org.springframework.http.converter.json.MappingJacksonHttpMessageConverter#77624896' of type [org.springframework.http.converter.json.MappingJacksonHttpMessageConverter] while setting bean property 'messageConverters' with key [0]; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [org.springframework.http.converter.json.MappingJacksonHttpMessageConverter] for bean with name 'org.springframework.http.converter.json.MappingJacksonHttpMessageConverter#77624896' defined in class path resource [rest-client-context.xml]; nested exception is java.lang.ClassNotFoundException: org.springframework.http.converter.json.MappingJacksonHttpMessageConverter
Caused by: java.lang.ClassNotFoundException: org.springframework.http.converter.json.MappingJacksonHttpMessageConverter
I have this exception when I try to run the main method from eclipse.
I can think of something like the spring jars cannot be seen but I don't know why...
Can you please help me?
–
–
–
i tried to copy paste your spring beans to a project but something strange is wrong with
<bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"/>
this line, specifically there seems to be some invisible characters before the last r
in Converter
try typing that classname again manually.
if this is the case then its the craziest thing i have seen for sometime :D
Also MappingJacksonHttpMessageConverter
is deprecated in 4.0.0 there is something newer. And you will need to add dependencies for jackson as well to get things working. This should be helpful.
–
–
–
–
The first major version of Jackson is no longer supported in Spring 4. The class you want to use is now
org.springframework.http.converter.json.MappingJackson2HttpMessageConverter
. Make sure that you have com.fasterxml.jackson.core/jackson-core/2.x.x on your classpath.
–
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.6.3</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.6.3</version>
</dependency>
Found it here!
–
–
@Bean
public HttpMessageConverters customConverters() {
HttpMessageConverter<?> jacksonMessageConverter = new MappingJackson2HttpMessageConverter();
// HttpMessageConverter<?> another = ...
return new HttpMessageConverters(jacksonMessageConverter);
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.6.3</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.6.3</version>
</dependency>
it's worked for me
–
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