SpringBoot 集成fastJson

梦里梦外; 2023-10-17 23:58 104阅读 0赞

第一步：添加fastjson 依赖：

<fastjson.version>1.2.47</fastjson.version>

<dependency>
    			<groupId>com.alibaba</groupId>
    			<artifactId>fastjson</artifactId>
    			<version>${fastjson.version}</version>
    		</dependency>

第二步：如果返回对象是json 对象，需要添加一个转换器（org.springframework.boot.autoconfigure.HttpMessageConverters）：

1、springboot 注解bean 方式:

import com.alibaba.fastjson.serializer.SerializerFeature;
    import com.alibaba.fastjson.support.config.FastJsonConfig;
    import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
    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 tk.mybatis.spring.annotation.MapperScan;
    
    
    @SpringBootApplication
    @MapperScan("com.zzg.springboot.mapper")
    public class Application{
        public static void main(String[] args) {
            SpringApplication.run(Application.class, args);
        }
        /**
         * 覆盖方法configureMessageConverters，使用fastJson
         * @return
         */
        @Bean
        public HttpMessageConverters fastJsonHttpMessageConverters() {
            //1、定义一个convert转换消息的对象
            FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
            //2、添加fastjson的配置信息
            FastJsonConfig fastJsonConfig = new FastJsonConfig();
            fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
            //3、在convert中添加配置信息
            fastConverter.setFastJsonConfig(fastJsonConfig);
            //4、将convert添加到converters中
            HttpMessageConverter<?> converter = fastConverter;
            return new HttpMessageConverters(converter);
        }
    
    }

2、继承org.springframework.web.servlet.config.annotation.WebMvcConfigurer 接口，并且覆写configureMessageConverters()方法。

package com.zzg.springboot;
    
    import com.alibaba.fastjson.serializer.SerializerFeature;
    import com.alibaba.fastjson.support.config.FastJsonConfig;
    import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.http.converter.HttpMessageConverter;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
    import tk.mybatis.spring.annotation.MapperScan;
    
    import java.util.List;
    
    @SpringBootApplication
    @MapperScan("com.zzg.springboot.mapper")
    public class Application implements WebMvcConfigurer {
        public static void main(String[] args) {
            SpringApplication.run(Application.class, args);
        }
    
        @Override
        public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
            //1、定义一个convert转换消息的对象
            FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
            //2、添加fastjson的配置信息
            FastJsonConfig fastJsonConfig = new FastJsonConfig();
            fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
            //3、在convert中添加配置信息
            fastConverter.setFastJsonConfig(fastJsonConfig);
            //4、将convert添加到converters中
            converters.add(fastConverter);
        }
    }