I am encountering an issue while attempting to send a List of data as JSON from my Spring Controller. The error message "Could not find acceptable representation" is being thrown. Below are the snippets of code from different parts of my application:
pom.xml
<hibernate.version>4.1.4.Final</hibernate.version>
<spring.version>3.2.3.RELEASE</spring.version>
<spring.data.version>1.3.2.RELEASE</spring.data.version>
<jackson.version>1.9.12</jackson.version>
<spring.security.version>3.2.2.RELEASE</spring.security.version>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>${jackson.version}</version>
</dependency>
<!--
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.1.0</version>
</dependency>
-->
WebConfig. I have explored various blogs and stackoverflow posts for solutions, including the commented ones.
@Configuration
@EnableWebMvc
@EnableTransactionManagement
@ComponentScan("com.test.testing")
//@PropertySource("classpath:application.properties")
@EnableJpaRepositories("com.test.testing.config.dao")
public class WebAppConfig extends WebMvcConfigurerAdapter {
@Resource
private Environment env;
@Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/login").setViewName("login");
registry.setOrder(Ordered.HIGHEST_PRECEDENCE);
}
...
Controller. Output from the controller method:
getMasterTypeData Master Data Type List :[MasterType [id=1, value=UAT/QA], MasterType [id=4, value=Development], MasterType [id=2, value=Model], MasterType [id=3, value=Production]]
@RequestMapping(value = "/getdata/{type}", method = RequestMethod.GET,produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public List<MasterType> getMasterTypeData(@PathVariable String type) {
MASTERDATATYPE master = MASTERDATATYPE.getMasterDataType(type);
List<MasterType> masterdatTypeList = new ArrayList<MasterType>();
System.out.println("getMasterTypeData Input :"+type+",MASTERDATATYPE :"+master);
// some logics to populate masterdatTypeList
System.out.println("getMasterTypeData Master Data Type List :"+masterdatTypeList);
return masterdatTypeList;
}
and finally the MasterType class that should be sent back to the browser as a JSON object:
@JsonAutoDetect
public class MasterType implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private Long id;
...
Could you please assist me with resolving this issue?