alibaba fastjson 相关资料记录

╰半橙微兮° 2022-08-21 02:21 144阅读 0赞

选择json相关的工具包时，考虑易用性、性能、配置简单等方面，采用了阿里巴巴的 fastjson。

在深入使用的过程中，越来越发现，文档奇缺，只好将找到的资料，在此建立索引，便于日后查询，

本文待整理。。。。

import com.alibaba.fastjson.annotation.JSONField;  
  
public class BaseParam \{  
@JSONField(name="OTAId")  
private String otaId;  
  
@JSONField(name="Status")  
private int status; //状态码  
  
@JSONField(name="StatusText")  
private String statusText;  
  
@JSONField(serialize=false) //该字段不参与序列化  
private String otaPassword;  
  
@JSONField(name="Timestamp", format="yyyy-MM-dd HH:mm:ss")  
private Date timestamp; //请求时间  
  
//getter and setter  
\}

package com.util;
    
    import java.math.BigDecimal;
    
    import org.apache.logging.log4j.LogManager;
    import org.apache.logging.log4j.Logger;
    
    import com.alibaba.fastjson.serializer.ValueFilter;
    
    /**
     * 处理BigDecimal小数部分为0的情况
     * 123.5 -> 123.5
     * 12.0 -> 12
     */
    public class BigDecimalValueFilter implements ValueFilter {
    	private static final Logger logger = LogManager.getLogger(BigDecimalValueFilter.class);
    	/**
    	 * @param object 对象
    	 * @param name 对象的字段的名称
    	 * @param value 对象的字段的值
    	 */
    	@Override
    	public Object process(Object object, String name, Object value) {
    		if(null != value && value instanceof BigDecimal) {
    			String str = value.toString();
    			if(str.endsWith(".0")) {
    				str = str.substring(0, str.length()-2);
    			} else if(str.endsWith(".00")) {
    				str = str.substring(0, str.length()-3);
    			} else {
    				str = value.toString();
    			}
    			
    			logger.debug(value.toString()+"->"+str);
    			
    			return str;
    		}
    		return value;
    	}
    }

fastjson转换数字，格式化小数点，参考

[http://blog.csdn.net/wangjunjun2008/article/details/53010594][http_blog.csdn.net_wangjunjun2008_article_details_53010594]

fastjson使用过程中的常见问题及答案

[https://github.com/alibaba/fastjson/wiki/%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98][https_github.com_alibaba_fastjson_wiki_E5_B8_B8_E8_A7_81_E9_97_AE_E9_A2_98]

fastjson格式化输出，参考

[https://github.com/smallnest/fastjson-jaxrs-json-provider/issues/1][https_github.com_smallnest_fastjson-jaxrs-json-provider_issues_1]

fastjson的SerializerFeature属性，参考

[http://blog.csdn.net/u010246789/article/details/52539576][http_blog.csdn.net_u010246789_article_details_52539576]

[http://www.cnblogs.com/Jie-Jack/p/3758046.html][http_www.cnblogs.com_Jie-Jack_p_3758046.html]

JSONField注解的属性说明

[https://github.com/alibaba/fastjson/wiki/JSONField][https_github.com_alibaba_fastjson_wiki_JSONField]

序列化过滤

[https://github.com/alibaba/fastjson/wiki/SerializeFilter][https_github.com_alibaba_fastjson_wiki_SerializeFilter]

PropertyFilter 接口过滤属性

[https://github.com/alibaba/fastjson/wiki/%E4%BD%BF%E7%94%A8SimplePropertyPreFilter%E8%BF%87%E6%BB%A4%E5%B1%9E%E6%80%A7][https_github.com_alibaba_fastjson_wiki_E4_BD_BF_E7_94_A8SimplePropertyPreFilter_E8_BF_87_E6_BB_A4_E5_B1_9E_E6_80_A7]

定制序列化

[https://github.com/alibaba/fastjson/wiki/%E5%AE%9A%E5%88%B6%E5%BA%8F%E5%88%97%E5%8C%96][https_github.com_alibaba_fastjson_wiki_E5_AE_9A_E5_88_B6_E5_BA_8F_E5_88_97_E5_8C_96]

[http_blog.csdn.net_wangjunjun2008_article_details_53010594]: http://blog.csdn.net/wangjunjun2008/article/details/53010594
[https_github.com_alibaba_fastjson_wiki_E5_B8_B8_E8_A7_81_E9_97_AE_E9_A2_98]: https://github.com/alibaba/fastjson/wiki/%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98
[https_github.com_smallnest_fastjson-jaxrs-json-provider_issues_1]: https://github.com/smallnest/fastjson-jaxrs-json-provider/issues/1
[http_blog.csdn.net_u010246789_article_details_52539576]: http://blog.csdn.net/u010246789/article/details/52539576
[http_www.cnblogs.com_Jie-Jack_p_3758046.html]: http://www.cnblogs.com/Jie-Jack/p/3758046.html
[https_github.com_alibaba_fastjson_wiki_JSONField]: https://github.com/alibaba/fastjson/wiki/JSONField
[https_github.com_alibaba_fastjson_wiki_SerializeFilter]: https://github.com/alibaba/fastjson/wiki/SerializeFilter
[https_github.com_alibaba_fastjson_wiki_E4_BD_BF_E7_94_A8SimplePropertyPreFilter_E8_BF_87_E6_BB_A4_E5_B1_9E_E6_80_A7]: https://github.com/alibaba/fastjson/wiki/%E4%BD%BF%E7%94%A8SimplePropertyPreFilter%E8%BF%87%E6%BB%A4%E5%B1%9E%E6%80%A7
[https_github.com_alibaba_fastjson_wiki_E5_AE_9A_E5_88_B6_E5_BA_8F_E5_88_97_E5_8C_96]: https://github.com/alibaba/fastjson/wiki/%E5%AE%9A%E5%88%B6%E5%BA%8F%E5%88%97%E5%8C%96