自定义数据类型转换

2018-03-01 11:23:17来源:oschina作者:haoyuehong人点击

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package com.hz1202.utils;import lombok.extern.slf4j.Slf4j;
import org.codehaus.jackson.map.DeserializationConfig;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.SerializationConfig;
import org.codehaus.jackson.map.annotate.JsonSerialize;
import org.codehaus.jackson.map.ser.impl.SimpleFilterProvider;
import org.codehaus.jackson.type.TypeReference;
/**
* @Author: mol
* @Description:对象类型与json数据相互转换工具类
* @Date: create in 13:59 2018/2/27
*/
@Slf4j
public class JsonMapper {
private static ObjectMapper objectMapper = new ObjectMapper();
static {
//config
objectMapper.disable(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES);
objectMapper.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS,false);
objectMapper.setFilters(new SimpleFilterProvider().setFailOnUnknownId(false));
objectMapper.setSerializationInclusion(JsonSerialize.Inclusion.NON_EMPTY);
}
/**
* 将对象转化为json字符串
*/
publicstatic String object2String(T t){
if(t == null){
return null;
}
try {
if(t instanceof String){
return (String) t;
}else{
return objectMapper.writeValueAsString(t);
}
} catch (Exception e) {
log.warn("【对象转换为字符串】类型转换异常,error:{}",e);
return null;
}
}
/**
* 将json字符串转化为对象
*/
public static T string2Object(String src, TypeReference tTypeReference){
if(src == null || tTypeReference == null){
return null;
}
try {
if(tTypeReference.getType().equals(String.class)){
return (T) src;
}else{
return objectMapper.readValue(src,tTypeReference);
}
}catch (Exception e){
log.warn("【字符串转换为对象】类型转换异常,src:{},tTypeReference:{},error:{}",src,tTypeReference.getType(),e);
return null;
}
}
}

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