FastJson：自定义序列化Boolean转Integer

前言

• 在前后端分离开发模式下，接口规范统一处理Boolean类型，需要转成0和1，使用SpringBoot + fastjson全局统一配置，具体配置如下

  配置自定义序列化规则

  自定义序列化

• 自定义BooleanToIntegerSerializer实现ObjectSerializer接口方法 ```shell package com.jyusun.origin.common.config.fastjson;

import com.alibaba.fastjson.serializer.JSONSerializer; import com.alibaba.fastjson.serializer.ObjectSerializer; import com.alibaba.fastjson.serializer.SerializeWriter; import com.jyusun.origin.common.util.ObjectUtil;

import java.io.IOException; import java.lang.reflect.Type;

/**

• 布尔类型序列化 false=0,true=1
• 作用描述： *
• @author jyusun
• @date 2021/12/1 15:50
• @since 1.0.0 */ public class BooleanToIntegerSerializer implements ObjectSerializer {

@Override
public void write(JSONSerializer jsonSerializer, Object object, Object o1, Type type, int i) throws IOException {
    SerializeWriter out = jsonSerializer.getWriter();
    int value;
    if (ObjectUtil.isEmpty(object)) {
        value = 0;
    } else {
        value = Boolean.parseBoolean(String.valueOf(object)) ? 1 : 0;
    }
    out.writeInt(value);
}

}

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### 方式一：FastJsonConfiguration
- 配置自定义的序列化代码`fastJsonConfig.getSerializeConfig().put(Boolean.class, new BooleanToIntegerSerializer());`
```shell
package com.jyusun.origin.basic.common.config.fastjson;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.parser.ParserConfig;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import com.clamc.common.util.DateUtil;
import com.google.common.collect.Lists;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import java.nio.charset.Charset;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.List;
/**
 * FastJson 配置类
 *
 * @author jyusun
 * @since 1.0.0
 */
@Configuration
@ConditionalOnClass(JSON.class)
@ConditionalOnMissingBean(FastJsonHttpMessageConverter.class)
@ConditionalOnWebApplication
public class FastJsonConfiguration {
    @Bean
    public FastJsonHttpMessageConverter fastJsonHttpMessageConverter() {
        FastJsonHttpMessageConverter converter = new FastJsonHttpMessageConverter();
        converter.setFastJsonConfig(fastJsonConfig());
        converter.setSupportedMediaTypes(getSupportedMediaType());
        ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
        return converter;
    }
    /**
     * fastJson的配置
     */
    private FastJsonConfig fastJsonConfig() {
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(
                SerializerFeature.PrettyFormat,
                // Map 默认值
                SerializerFeature.WriteMapNullValue,
                // 数组 默认 空数组
                SerializerFeature.WriteNullListAsEmpty,
                // 数值类型 默认为 0
                SerializerFeature.WriteNullNumberAsZero,
                // Boolean 默认为 false
                SerializerFeature.WriteNullBooleanAsFalse,
                SerializerFeature.WriteDateUseDateFormat,
                // 消除循环引用
                SerializerFeature.DisableCircularReferenceDetect,
                // 字段名称排序后输出
                SerializerFeature.SortField
        );
        fastJsonConfig.setDateFormat(DateUtil.PATTERN_YYYY_MM_DD_HH_MM_SS);
        fastJsonConfig.setCharset(Charset.forName("utf-8"));
        // 自定义Boolean类型序列化配置
        fastJsonConfig.getSerializeConfig().put(Boolean.class, new BooleanToIntegerSerializer());
        return fastJsonConfig;
    }
    /**
     * 支持的mediaType类型
     */
    private List<MediaType> getSupportedMediaType() {
        ArrayList<MediaType> mediaTypes = Lists.newArrayList();
        mediaTypes.add(MediaType.APPLICATION_JSON);
        mediaTypes.add(MediaType.APPLICATION_ATOM_XML);
        mediaTypes.add(MediaType.APPLICATION_FORM_URLENCODED);
        mediaTypes.add(MediaType.APPLICATION_OCTET_STREAM);
        mediaTypes.add(MediaType.APPLICATION_PDF);
        mediaTypes.add(MediaType.APPLICATION_RSS_XML);
        mediaTypes.add(MediaType.APPLICATION_XHTML_XML);
        mediaTypes.add(MediaType.APPLICATION_XML);
        mediaTypes.add(MediaType.IMAGE_GIF);
        mediaTypes.add(MediaType.IMAGE_JPEG);
        mediaTypes.add(MediaType.IMAGE_PNG);
        mediaTypes.add(MediaType.TEXT_EVENT_STREAM);
        mediaTypes.add(MediaType.TEXT_HTML);
        mediaTypes.add(MediaType.TEXT_MARKDOWN);
        mediaTypes.add(MediaType.TEXT_PLAIN);
        mediaTypes.add(MediaType.TEXT_XML);
        //增加解析spring boot actuator结果的解析
        mediaTypes.add(MediaType.valueOf("application/vnd.spring-boot.actuator.v2+json"));
        return mediaTypes;
    }
}

运行结果

{
  "code": "S00200",
  "message": "操作成功",
  "sign": 1,
  "body": {}
}