使用FastJson处理JSON数据进阶

绝地灬酷狼 2022-11-17 13:56 283阅读 0赞

## SerializerFeature属性 ##

<table> 
 <thead> 
  <tr> 
   <th>名称</th> 
   <th>含义</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>QuoteFieldNames</td> 
   <td>输出key时是否使用双引号,默认为true</td> 
  </tr> 
  <tr> 
   <td>UseSingleQuotes</td> 
   <td>使用单引号而不是双引号,默认为false</td> 
  </tr> 
  <tr> 
   <td>WriteMapNullValue</td> 
   <td>是否输出值为null的字段,默认为false</td> 
  </tr> 
  <tr> 
   <td>WriteEnumUsingToString</td> 
   <td>Enum输出name()或者original,默认为false</td> 
  </tr> 
  <tr> 
   <td>UseISO8601DateFormat</td> 
   <td>Date使用ISO8601格式输出，默认为false</td> 
  </tr> 
  <tr> 
   <td>WriteNullListAsEmpty</td> 
   <td>List字段如果为null,输出为[],而非null</td> 
  </tr> 
  <tr> 
   <td>WriteNullStringAsEmpty</td> 
   <td>字符类型字段如果为null,输出为”“,而非null</td> 
  </tr> 
  <tr> 
   <td>WriteNullNumberAsZero</td> 
   <td>数值字段如果为null,输出为0,而非null</td> 
  </tr> 
  <tr> 
   <td>WriteNullBooleanAsFalse</td> 
   <td>Boolean字段如果为null,输出为false,而非null</td> 
  </tr> 
  <tr> 
   <td>SkipTransientField</td> 
   <td>如果是true，类中的Get方法对应的Field是transient，序列化时将会被忽略。默认为true</td> 
  </tr> 
  <tr> 
   <td>SortField</td> 
   <td>按字段名称排序后输出。默认为false</td> 
  </tr> 
  <tr> 
   <td>WriteTabAsSpecial</td> 
   <td>把\t做转义输出，默认为false</td> 
  </tr> 
  <tr> 
   <td>PrettyFormat</td> 
   <td>结果是否格式化,默认为false</td> 
  </tr> 
  <tr> 
   <td>WriteClassName</td> 
   <td>序列化时写入类型信息，默认为false。反序列化是需用到</td> 
  </tr> 
  <tr> 
   <td>DisableCircularReferenceDetect</td> 
   <td>消除对同一对象循环引用的问题，默认为false</td> 
  </tr> 
  <tr> 
   <td>WriteSlashAsSpecial</td> 
   <td>对斜杠’/’进行转义</td> 
  </tr> 
  <tr> 
   <td>BrowserCompatible</td> 
   <td>将中文都会序列化为\uXXXX格式，字节数会多一些，但是能兼容IE 6，默认为false</td> 
  </tr> 
  <tr> 
   <td>WriteDateUseDateFormat</td> 
   <td>全局修改日期格式,默认为false。JSON.DEFFAULT_DATE_FORMAT = “yyyy-MM-dd”;JSON.toJSONString(obj, SerializerFeature.WriteDateUseDateFormat);</td> 
  </tr> 
  <tr> 
   <td>DisableCheckSpecialChar</td> 
   <td>一个对象的字符串属性中如果有特殊字符如双引号，将会在转成json时带有反斜杠转移符。如果不需要转义，可以使用这个属性。默认为false</td> 
  </tr> 
  <tr> 
   <td>NotWriteRootClassName</td> 
   <td>含义</td> 
  </tr> 
  <tr> 
   <td>BeanToArray</td> 
   <td>将对象转为array输出</td> 
  </tr> 
  <tr> 
   <td>WriteNonStringKeyAsString</td> 
   <td>含义</td> 
  </tr> 
  <tr> 
   <td>NotWriteDefaultValue</td> 
   <td>含义</td> 
  </tr> 
  <tr> 
   <td>BrowserSecure</td> 
   <td>含义</td> 
  </tr> 
  <tr> 
   <td>IgnoreNonFieldGetter</td> 
   <td>含义</td> 
  </tr> 
  <tr> 
   <td>WriteEnumUsingName</td> 
   <td>含义</td> 
  </tr> 
 </tbody> 
</table>

## 示例 ##

public static void main(String[] args) { 
        JSON.DEFFAULT_DATE_FORMAT = "yyyy-MM-dd HH:mm:ss";
        System.out.println(JSON.toJSONString(new Date(), SerializerFeature.WriteDateUseDateFormat));
        System.out.println(JSON.toJSONString(new Date(), SerializerFeature.WriteDateUseDateFormat,SerializerFeature.UseSingleQuotes));
    
        System.out.println(JSON.toJSONString(new Dept(40, "OPERATIONS", "BOSTON"), SerializerFeature.BeanToArray));
        System.out.println(JSON.toJSONString(new Dept(40, "OPERATIONS", "BOSTON"), SerializerFeature.PrettyFormat));
        System.out.println(JSON.toJSONString(new Dept(40, "OPERATIONS", "BOSTON"), SerializerFeature.SortField));
    }

结果  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpYW5naGVjYWk1MjE3MTMxNA_size_16_color_FFFFFF_t_70]

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