开发笔记:springboot2.0添加对fastjson的支持

package com.boot.demo;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import javafx.scene.chart.Chart;
import org.apache.logging.log4j.Logger;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
@Configuration
public class FastJsonConfiguration implements WebMvcConfigurer {
@Override
public void configureMessageConverters(List> converters) {
/**
* 先移除MappingJackson2HttpMessageConverter转换器，再加入fastjson转换器
*/
Iterator> iterator = converters.iterator();
while(iterator.hasNext()){
HttpMessageConverter cOnverter= iterator.next();
if(converter instanceof MappingJackson2HttpMessageConverter){
iterator.remove();
}
}
FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter();
//自定义配置...
FastJsonConfig cOnfig= new FastJsonConfig();
config.setSerializerFeatures(SerializerFeature.DisableCircularReferenceDetect,
SerializerFeature.WriteMapNullValue
,SerializerFeature.WriteNullListAsEmpty,
SerializerFeature.WriteNullBooleanAsFalse,
SerializerFeature.WriteNullStringAsEmpty,SerializerFeature.WriteNullNumberAsZero);
fastJsonHttpMessageConverter.setFastJsonConfig(config);
//解决返回的json数据中文乱码问题
List fastMediaTypes = new ArrayList();
fastMediaTypes.add(MediaType.APPLICATION_JSON_UTF8);
fastJsonHttpMessageConverter.setSupportedMediaTypes(fastMediaTypes);
//将转换器添加到转换列表
converters.add(fastJsonHttpMessageConverter);
}
}