Java中Json字符串的序列化與反序列化

組件：com.fasterxml.jackson
 
POM（局部）：

<logback.version>1.0.13</logback.version>
<jackson.version>2.3.1</jackson.version>

<dependency>
 <groupId>ch.qos.logback</groupId>
 <artifactId>logback-classic</artifactId>
 <version>${logback.version}</version>
</dependency>

<dependency>
 <groupId>com.fasterxml.jackson.core</groupId>
 <artifactId>jackson-databind</artifactId>
 <version>${jackson.version}</version>
</dependency>

代碼：

import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Map;

import org.slf4j.LoggerFactory;

import ch.qos.logback.classic.Logger;

import com.fasterxml.jackson.core.JsonGenerationException;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.type.TypeFactory;

/**
 * Json序列化工具
 *
 * @author http://blog.csdn.net/xxd851116
 * @date 2014年3月26日 下午1:21:59
 */
public class JsonUtils {
 private static final Logger logger = (Logger) LoggerFactory.getLogger(JsonUtils.class);

 private static ObjectMapper objectMapper = new ObjectMapper();

 /**
  * 將對象序列化為JSON字符串
  *
  * @param object
  * @return JSON字符串
  */
 public static String serialize(Object object) {
  Writer write = new StringWriter();
  try {
   objectMapper.writeValue(write, object);
  } catch (JsonGenerationException e) {
   logger.error("JsonGenerationException when serialize object to json", e);
  } catch (JsonMappingException e) {
   logger.error("JsonMappingException when serialize object to json", e);
  } catch (IOException e) {
   logger.error("IOException when serialize object to json", e);
  }
  return write.toString();
 }

 /**
  * 將JSON字符串反序列化為對象
  *
  * @param object
  * @return JSON字符串
  */
 public static <T> T deserialize(String json, Class<T> clazz) {
  Object object = null;
  try {
   object = objectMapper.readValue(json, TypeFactory.rawClass(clazz));
  } catch (JsonParseException e) {
   logger.error("JsonParseException when serialize object to json", e);
  } catch (JsonMappingException e) {
   logger.error("JsonMappingException when serialize object to json", e);
  } catch (IOException e) {
   logger.error("IOException when serialize object to json", e);
  }
  return (T) object;
 }

 /**
  * 將JSON字符串反序列化為對象
  *
  * @param object
  * @return JSON字符串
  */
 public static <T> T deserialize(String json, TypeReference<T> typeRef) {
  try {
   return (T) objectMapper.readValue(json, typeRef);
  } catch (JsonParseException e) {
   logger.error("JsonParseException when deserialize json", e);
  } catch (JsonMappingException e) {
   logger.error("JsonMappingException when deserialize json", e);
  } catch (IOException e) {
   logger.error("IOException when deserialize json", e);
  }
  return null;
 }
}