WebClient适配multipart-formdata写活方法

首先前端传递参数格式为json

{
    "A": "1",
    "B": "1",
    "C": "1.0.0",
    "param":{
        "A":"/login",
        "B":"post",
        "C":"",
        "D":"multipart-formdata",
        "formdata":{
            "mobile":"123456789",
            "password":"123456789"
        }
    }
}

获取param下面的formdata字符串强行转换（如何获取param你需要自己写方法）

Map<String, Object> formdata = (Map<String, Object>)param.get("formdata");

for转换

转换为 MultiValueMap（Spring 提供的适配器）
 MultiValueMap<String, Object> parts = new LinkedMultiValueMap<>();
for (Map.Entry<String, Object> entry : formdata.entrySet()) {
// 处理普通字段
parts.add(entry.getKey(), entry.getValue().toString());
}