springboot配置fastjson后端往前端传输格式化

　　

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.context.annotation.Bean;
import org.springframework.http.converter.HttpMessageConverter;

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;

@Beanpublic HttpMessageConverters fastJsonHttpMessageConverters() {    // 一、须要先定义一个 convert 转换消息的对象;    FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();    //二、添加fastJson 的配置信息，好比：是否要格式化返回的json数据;    FastJsonConfig fastJsonConfig = new FastJsonConfig();    fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);    //三、在convert中添加配置信息.    fastConverter.setFastJsonConfig(fastJsonConfig);    HttpMessageConverter<?> converter = fastConverter;    return new HttpMessageConverters(converter);}