• springboot-4-整合fastjson


    使用fastjson作为springboot的默认json解析, 原来使用的是jackson

    1, 引入依赖

    <dependencies>
            <dependency>
               <groupId>com.alibaba</groupId>
               <artifactId>fastjson</artifactId>
               <version>1.2.15</version>
        </dependency>

    注意: FastJsonHttpMessageConverter4支持4.2以上版本

       FastJsonHttpMessageConverter,支持4.2以下的版本

    第一种方法: 

    (1)启动类继承extends WebMvcConfigurerAdapter

    (2)覆盖方法configureMessageConverters

    @SpringBootApplication
    public class ApiCoreApp  extends WebMvcConfigurerAdapter {
       
        @Override
        public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
            super.configureMessageConverters(converters);
            
         // 定义一个convert转换消息对象 FastJsonHttpMessageConverter fastConverter
    = new FastJsonHttpMessageConverter();     
        // 添加fastjosn配置信息, 比如是否格式化返回的json数据
         FastJsonConfig fastJsonConfig
    = new FastJsonConfig(); fastJsonConfig.setSerializerFeatures( SerializerFeature.PrettyFormat );
         // convert中添加配置 fastConverter.setFastJsonConfig(fastJsonConfig); // 添加到convert中 converters.add(fastConverter); } }

    第二种方法: 

    (1)在App.java启动类中,注入Bean : HttpMessageConverters

    package com.iwhere;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.autoconfigure.web.HttpMessageConverters;
    import org.springframework.http.converter.HttpMessageConverter;
    import org.springframework.web.bind.annotation.RestController;
    
    import com.alibaba.fastjson.serializer.SerializerFeature;
    import com.alibaba.fastjson.support.config.FastJsonConfig;
    import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
    
    @RestController
    @SpringBootApplication
    public class App {
        
        
       

     

    @Bean
    public HttpMessageConverters fastJsonHttpMessageConverters() {
      FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
      FastJsonConfig fastJsonConfig = new FastJsonConfig();
      fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat,
      SerializerFeature.WriteMapNullValue,
      SerializerFeature.WriteNullListAsEmpty,
      SerializerFeature.WriteNullNumberAsZero,
      SerializerFeature.WriteNullBooleanAsFalse,
      SerializerFeature.WriteNullStringAsEmpty);
      fastConverter.setFastJsonConfig(fastJsonConfig);

      // 返回HttpMessageConvert对象
      HttpMessageConverter<?> converter = fastConverter;
      return new HttpMessageConverters(converter);
    }

    
    
    }

    测试方法: 

    在实体类中使用@JSONField(Serialize=false) 字段不返回即是成功

     在data字段上添加

    @JSONFIled(format="yyyy-mm-dd HH:mm:ss")

    既可以实现自动转化

    本博客来源: http://412887952-qq-com.iteye.com/blog/2315202

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  • 原文地址:https://www.cnblogs.com/wenbronk/p/6548112.html
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