首先引入fastJson的依赖:
<properties> <fastjson.version>1.2.15</fastjson.version> </properties> <!-- fastjson 数据json格式化工具 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>${fastjson.version}</version> </dependency> <!-- fastjson 数据json格式化工具 -->
在项目的web config类加入下列配置:
import com.alibaba.fastjson.serializer.SerializerFeature; import com.alibaba.fastjson.support.config.FastJsonConfig; import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter4; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.boot.autoconfigure.http.HttpMessageConverters; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; import simple.proj.zxz.play.interceptors.ApiAccessInterceptor; import simple.proj.zxz.play.prop.CommProp; /** * web配置 * * @author zhangxz * 2019/10/25 */ @Configuration public class WebConfig implements WebMvcConfigurer { @Autowired private CommProp commProp; @Bean public FastJsonConfig fastJsonConfig() { FastJsonConfig fastJsonConfig = new FastJsonConfig(); fastJsonConfig.setSerializerFeatures( //输出null值 SerializerFeature.WriteMapNullValue, //数组的null输出为空数组:[] SerializerFeature.WriteNullListAsEmpty, //禁止json的循环引用 SerializerFeature.DisableCircularReferenceDetect, // SerializerFeature.WriteDateUseDateFormat, //字符串的null输出为空字符串:"" SerializerFeature.WriteNullStringAsEmpty); return fastJsonConfig; } @Bean public HttpMessageConverters fastJsonHttpMessageConverters( @Qualifier("fastJsonConfig") FastJsonConfig fastJsonConfig) { FastJsonHttpMessageConverter4 fastConverter = new FastJsonHttpMessageConverter4(); fastConverter.setFastJsonConfig(fastJsonConfig); return new HttpMessageConverters(fastConverter); } }