Object 和Json字符串互转工具类

Object 和Json字符串互转

引入依赖的jar包

<dependency>
	<groupId>com.fasterxml.jackson.datatypegroupId>
	<artifactId>jackson-datatype-guavaartifactId>
	<version>2.5.3version>
dependency>
<dependency>
	<groupId>org.codehaus.jacksongroupId>
	<artifactId>jackson-core-aslartifactId>
	<version>1.9.13version>
dependency>
<dependency>
	<groupId>org.codehaus.jacksongroupId>
	<artifactId>jackson-mapper-aslartifactId>
	<version>1.9.13version>
dependency>

Object 和Json字符串互转工具类

package com.next.util;

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;

@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);
    }

    public static <T> String obj2String(T src) {
        if (src == null) {
            return null;
        }
        try {
            return src instanceof String ? (String) src : objectMapper.writeValueAsString(src);
        } catch (Exception e) {
            log.warn("parse object to String exception, error:{}", e);
            return null;
        }
    }

    public static <T> T string2Obj(String src, TypeReference<T> typeReference) {
        if (src == null || typeReference == null) {
            return null;
        }
        try {
            return (T) (typeReference.getType().equals(String.class) ? src : objectMapper.readValue(src, typeReference));
        } catch (Exception e) {
            log.warn("parse String to Object exception, String:{}, TypeReference:{}, error:{}", src, typeReference.getType(), e);
            return null;
        }
    }
}