FastJson 的一些配置

Posted 2022-11-04 正怒月神

主要提到：关闭循环引用的配置

"$ref":"$.data[0].detail.wmsInboundorder.details[1]"

如下：

import com.alibaba.fastjson.serializer.SerializeConfig;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.autoconfigure.web.HttpMessageConverters;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;

import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;


@Configuration
public class FastJSONConfiguration 

	//避免ASMSerializer一直新建，导致的内存溢出
	private final static SerializeConfig config = new SerializeConfig();

	@Bean
	public HttpMessageConverters httpMessageConverters() 
		HttpMessageConverter<?> fastjson = fastJsonHttpMessageConverter();
		return new HttpMessageConverters(fastjson);
	
	
	@Bean
	public FastJsonHttpMessageConverter fastJsonHttpMessageConverter() 
		FastJsonHttpMessageConverter messageConverter = new FastJsonHttpMessageConverter();
		//set MediaTypes
		List<MediaType> supportedMediaTypes = new ArrayList<MediaType>();
		supportedMediaTypes.add(MediaType.APPLICATION_JSON);
		supportedMediaTypes.add(MediaType.TEXT_html);
		supportedMediaTypes.add(MediaType.TEXT_PLAIN);
		messageConverter.setSupportedMediaTypes(supportedMediaTypes);

		//fastJsonConfig
		FastJsonConfig fastJsonConfig = new FastJsonConfig();
		fastJsonConfig.setDateFormat("yyyy-MM-dd HH:mm:ss");
		fastJsonConfig.setCharset(Charset.forName("UTF-8"));
		fastJsonConfig.setSerializerFeatures(
				SerializerFeature.QuoteFieldNames, // 双引号
				SerializerFeature.WriteMapNullValue, // 输入空值字段
				SerializerFeature.WriteEnumUsingToString, // 枚举输出STRING
				SerializerFeature.WriteNullBooleanAsFalse, // 布尔类型如果为null输出false
				SerializerFeature.WriteNullListAsEmpty, // List字段如果为null输出为[]
				//SerializerFeature.WriteNullNumberAsZero, // number类型如果为null输出0
				//SerializerFeature.WriteNullStringAsEmpty, // 字符串类型如果为null输出""
				SerializerFeature.SortField, // 按字段名称排序后进行输出
				SerializerFeature.WriteDateUseDateFormat,// 设置日期格式
				SerializerFeature.DisableCircularReferenceDetect
		);
		fastJsonConfig.setSerializeConfig(config);
		
		messageConverter.setFastJsonConfig(fastJsonConfig);
		return messageConverter;