原创出处 : www.jianshu.com/p/d209c02f8…
依赖
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.47</version>
</dependency>
SpringBoot启动类中配置转换器
@Bean
public HttpMessageConverters fastJsonHttpMessageConverters() {
//1、创建FastJson信息转换对象
FastJsonHttpMessageConverter fastConverter=new FastJsonHttpMessageConverter();
//2、创建FastJsonConfig对象并设定序列化规则 序列化规则详见SerializerFeature类中，后面会讲
FastJsonConfig fastJsonConfig= new FastJsonConfig();
fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat,SerializerFeature.WriteNonStringKeyAsString);
//本人就坑在WriteNonStringKeyAsString 将不是String类型的key转换成String类型，否则前台无法将Json字符串转换成Json对象
<span class="hljs-comment">//3、中文乱码解决方案</span>
List<MediaType> fastMedisTypes = <span class="hljs-keyword">new</span> ArrayList<MediaType>();
fastMedisTypes.add(MediaType.APPLICATION_JSON_UTF8);<span class="hljs-comment">//设定Json格式且编码为utf-8</span>
fastConverter.setSupportedMediaTypes(fastMedisTypes);
<span class="hljs-comment">//4、将转换规则应用于转换对象 </span>
fastConverter.setFastJsonConfig(fastJsonConfig);
<span class="hljs-keyword">return</span> <span class="hljs-keyword">new</span> HttpMessageConverters(fastConverter);
}
Controller
//初始化入库情况选项数据
@ApiOperation("初始化入库情况选项数据")
@RequestMapping(value = "init-stock-statu",method = RequestMethod.POST)
@ResponseBody
@CrossOrigin
public ResultBean<?> initStockStatus(){
Map<String, Map<Object, String>> partThree = new HashMap<>(3);
<span class="hljs-comment">//入库状态 下拉选框</span>
<span class="hljs-built_in">Map</span><<span class="hljs-built_in">Object</span>, <span class="hljs-built_in">String</span>> stockStatus = <span class="hljs-keyword">new</span> HashMap<>(<span class="hljs-number">6</span>);
<span class="hljs-keyword">for</span> (StockStatusEnum c : StockStatusEnum.values()) {
stockStatus.put(c.getCode(), c.getDesc());
}
partThree.put(<span class="hljs-string">"stockStatus"</span>, stockStatus);
<span class="hljs-comment">//入库类型 下拉选框</span>
<span class="hljs-built_in">Map</span><<span class="hljs-built_in">Object</span>, <span class="hljs-built_in">String</span>> stockType = <span class="hljs-keyword">new</span> HashMap<>(<span class="hljs-number">6</span>);
<span class="hljs-keyword">for</span> (StockTypeEnum c : StockTypeEnum.values()) {
stockType.put(c.getCode(), c.getDesc());
}
partThree.put(<span class="hljs-string">"stockType"</span>, stockType);
<span class="hljs-keyword">return</span> <span class="hljs-keyword">new</span> ResultBean<>(partThree);
}
当访问controller的时候，就会将对象转化成Json字符串返回了
FastJson的SerializerFeature（序列化规则）
public enum SerializerFeature {
QuoteFieldNames,//输出key时是否使用双引号,默认为true
UseSingleQuotes,<span class="hljs-comment">//使用单引号而不是双引号,默认为false</span>
WriteMapNullValue,<span class="hljs-comment">//是否输出值为null的字段,默认为false </span>
WriteEnumUsingToString,<span class="hljs-comment">//Enum输出name()或者original,默认为false</span>
UseISO8601DateFormat,<span class="hljs-comment">//Date使用ISO8601格式输出，默认为false</span>
WriteNullListAsEmpty,<span class="hljs-comment">//List字段如果为null,输出为[],而非null </span>
WriteNullStringAsEmpty,<span class="hljs-comment">//字符类型字段如果为null,输出为"",而非null </span>
WriteNullNumberAsZero,<span class="hljs-comment">//数值字段如果为null,输出为0,而非null </span>
WriteNullBooleanAsFalse,<span class="hljs-comment">//Boolean字段如果为null,输出为false,而非null</span>
SkipTransientField,<span class="hljs-comment">//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</span>
SortField,<span class="hljs-comment">//按字段名称排序后输出。默认为false</span>
<span class="hljs-meta">@Deprecated</span>
WriteTabAsSpecial,<span class="hljs-comment">//把\t做转义输出，默认为false</span>
PrettyFormat,<span class="hljs-comment">//结果是否格式化,默认为false</span>
WriteClassName,<span class="hljs-comment">//序列化时写入类型信息，默认为false。反序列化是需用到</span>
DisableCircularReferenceDetect,<span class="hljs-comment">//消除对同一对象循环引用的问题，默认为false</span>
WriteSlashAsSpecial,<span class="hljs-comment">//对斜杠'/'进行转义</span>
BrowserCompatible,<span class="hljs-comment">//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</span>
WriteDateUseDateFormat,<span class="hljs-comment">//全局修改日期格式,默认为false。JSON.DEFFAULT_DATE_FORMAT = "yyyy-MM-dd";JSON.toJSONString(obj, SerializerFeature.WriteDateUseDateFormat);</span>
NotWriteRootClassName,<span class="hljs-comment">//暂不知，求告知</span>
DisableCheckSpecialChar,<span class="hljs-comment">//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 </span>
BeanToArray; <span class="hljs-comment">//暂不知，求告知</span>
<span class="hljs-function"><span class="hljs-keyword">private</span> <span class="hljs-title">SerializerFeature</span><span class="hljs-params">()</span></span>{
mask = (<span class="hljs-number">1</span> << ordinal());
}
<span class="hljs-keyword">private</span> <span class="hljs-keyword">final</span> <span class="hljs-keyword">int</span> mask;
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">final</span> <span class="hljs-keyword">int</span> <span class="hljs-title">getMask</span><span class="hljs-params">()</span> </span>{
<span class="hljs-keyword">return</span> mask;
}
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">boolean</span> <span class="hljs-title">isEnabled</span><span class="hljs-params">(<span class="hljs-keyword">int</span> features, SerializerFeature feature)</span> </span>{
<span class="hljs-keyword">return</span> (features & feature.getMask()) != <span class="hljs-number">0</span>;
}
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">int</span> <span class="hljs-title">config</span><span class="hljs-params">(<span class="hljs-keyword">int</span> features, SerializerFeature feature, <span class="hljs-keyword">boolean</span> state)</span> </span>{
<span class="hljs-keyword">if</span> (state) {
features |= feature.getMask();
} <span class="hljs-keyword">else</span> {
features &= ~feature.getMask();
}
<span class="hljs-keyword">return</span> features;
}
}
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