/**
*
* 日 期：12-2-27
*/
package com.rop.marshaller;
import com.rop.RopException;
import com.rop.RopMarshaller;
import org.codehaus.jackson.JsonEncoding;
import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.map.AnnotationIntrospector;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.SerializationConfig;
import org.codehaus.jackson.xc.JaxbAnnotationIntrospector;
import java.io.IOException;
import java.io.OutputStream;
/**
* <pre>
* 将{@link com.rop.RopResponse}流化成JSON。 {@link ObjectMapper}是线程安全的。
* </pre>
*
* @author 陈雄华
* @version 1.0
*/
public class JacksonJsonRopMarshaller implements RopMarshaller {
private static ObjectMapper objectMapper;
public void marshaller(Object object, OutputStream outputStream) {
try {
JsonGenerator jsonGenerator = getObjectMapper().getJsonFactory().createJsonGenerator(outputStream, JsonEncoding.UTF8);
getObjectMapper().writeValue(jsonGenerator, object);
} catch (IOException e) {
throw new RopException(e);
}
}
private ObjectMapper getObjectMapper() throws IOException {
if (this.objectMapper == null) {
ObjectMapper objectMapper = new ObjectMapper();
AnnotationIntrospector introspector = new JaxbAnnotationIntrospector();
SerializationConfig serializationConfig = objectMapper.getSerializationConfig();
serializationConfig = serializationConfig.without(SerializationConfig.Feature.WRAP_ROOT_VALUE)
.with(SerializationConfig.Feature.INDENT_OUTPUT)
.withAnnotationIntrospector(introspector);
objectMapper.setSerializationConfig(serializationConfig);
this.objectMapper = objectMapper;
}
return this.objectMapper;
}
}