java post请求json格式传参，最外层嵌套form-data一个参数，key为miniprogram,值为json参数

好的，您可以使用以下java代码实现该post请求：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;

public class PostRequestExample {

    public static void main(String[] args) {
        String url = "your_url_here";
        String method = "POST";
        Map<String, String> headers = new HashMap<>();
        headers.put("Content-Type", "application/json");
        String postData = "{\"applycode\":\"KC01\",\"data\":{\"kfmc\":\"泰州时泰老百姓大药房\",\"zxbz\":\"0\"},\"dtapplet\":\"1\",\"ssqh\":\"320981\",\"yybh\":\"32129166620221110036\"}";
        Map<String, String> formData = new HashMap<>();
        formData.put("miniprogram", postData);

        try {
            String response = sendPostRequest(url, method, headers, formData);
            System.out.println(response);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static String sendPostRequest(String url, String method, Map<String, String> headers, Map<String, String> formData) throws Exception {
        URL requestUrl = new URL(url);
        HttpURLConnection connection = (HttpURLConnection) requestUrl.openConnection();
        connection.setRequestMethod(method);

        // 设置请求头
        if (headers != null) {
            for (String key : headers.keySet()) {
                connection.setRequestProperty(key, headers.get(key));
            }
        }

        // 设置请求体
        if (formData != null) {
            String boundary = "----" + System.currentTimeMillis();
            connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);
            StringBuilder sb = new StringBuilder();
            for (String key : formData.keySet()) {
                sb.append("--").append(boundary).append("\r\n");
                sb.append("Content-Disposition: form-data; name=\"").append(key).append("\"\r\n");
                sb.append("\r\n");
                sb.append(formData.get(key)).append("\r\n");
            }
            sb.append("--").append(boundary).append("--").append("\r\n");
            connection.getOutputStream().write(sb.toString().getBytes());
        }

        // 发送请求并获取响应
        BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String line;
        StringBuilder response = new StringBuilder();
        while ((line = in.readLine()) != null) {
            response.append(line);
        }
        in.close();
        connection.disconnect();

        return response.toString();
    }
}

其中，您需要将 `your_url_here` 替换为实际的请求URL，然后将请求参数按照json格式存入postData变量中，最后将 `miniprogram` 和 `postData` 存入 formData 变量中即可。