Java中Json字符串的序列化与反序列化
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2022-06-02 10:11:06
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组件: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>
代码:
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(); /** * 将对象序列化为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(); } /** * 将JSON字符串反序列化为对象 * * @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; } /** * 将JSON字符串反序列化为对象 * * @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; } }
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