json_extend.md

JSON序列化与反序列化

概述

• sdk默认使用fastjson作为json处理类
• sdk提供fastjson和jackson两种选择，同时提供自定义扩展
• 选择一种依赖可以排除其它相关依赖，详见依赖选择与排除

依赖选择与排除

• 选择fastjson

<dependency>
   <groupId>com.wacai</groupId>
   <artifactId>wacai-openAllInOne-sdk</artifactId>
   <version>${version}</version>
   <exclusions>
     <exclusion>
        <groupId>com.fasterxml.jackson.core</groupId>
         <artifactId>jackson-core</artifactId>
      </exclusion>
      <exclusion>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
      </exclusion>
      <exclusion>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
      </exclusion>
   </exclusions>
</dependency>

• 选择jackson

<dependency>
   <groupId>com.wacai</groupId>
   <artifactId>wacai-openAllInOne-sdk</artifactId>
   <version>${version}</version>
   <exclusions>
     <exclusion>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
      </exclusion>
   </exclusions>
</dependency>

代码使用样例

默认json处理类

• 默认使用fastjson，如果没有fastjson相关jar包，尝试使用jackson

WacaiOpenApiClient wacaiOpenApiClient = new WacaiOpenApiClient(${appKey}, ${appSecret});
wacaiOpenApiClient.init();

WacaiOpenApiRequest wacaiOpenApiRequest = new WacaiOpenApiRequest("wacai.order.delete", "v2");
wacaiOpenApiRequest.putBizParam("card_id", "34121141242144");
wacaiOpenApiRequest.putBizParam("apply_money", 10);   

扩展

自定义json处理类

public class FastJsonProcessor implements JsonProcessor {
    @Override
    public <T> T deserialization(String json, Type type) {
        return JSON.parseObject(json,type);
    }

    @Override
    public byte[] serialization(Object obj) {
        return JSON.toJSONBytes(obj);
    }

    @Override
    public String objToStr(Object obj) {
        return JSON.toJSONString(obj);
    }

    @Override
    public Map<String, Object> objToMap(Object obj) {
        if (obj != null && JSONObject.toJSON(obj) instanceof JSONObject) {
            JSONObject objJson = (JSONObject)JSONObject.toJSON(obj);
            Map<String, Object> resMap = new HashMap<>();
            resMap.putAll(objJson);
            return resMap;
        }
        throw new IllegalArgumentException("pojoParam " + obj + " is not kv object");
    }
}

使用自定义json处理类

WacaiOpenApiClient wacaiOpenApiClient = new WacaiOpenApiClient(${appKey}, ${appSecret});
wacaiOpenApiClient.setProcessor("自定义json处理类");
wacaiOpenApiClient.init();

WacaiOpenApiRequest wacaiOpenApiRequest = new WacaiOpenApiRequest("wacai.order.delete", "v2");
wacaiOpenApiRequest.putBizParam("card_id", "34121141242144");
wacaiOpenApiRequest.putBizParam("apply_money", 10);