获取接口

kakaBluce / 2024-10-26 / 原文

明白你的需求了，你想在Java的main方法中获取指定URL（例如doc-api.json）的所有GET请求方法的URL和参数。你可以使用类似前面提到的HttpURLConnection类来实现这个功能。

假设你有一个API文档文件doc-api.json，这个文件包含了多个API的定义，包括GET请求的方法和参数。你首先需要读取并解析这个JSON文件，然后提取出其中所有GET请求的方法和参数。以下是一个示例代码，演示如何实现这个功能：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Iterator;

import org.json.JSONArray;
import org.json.JSONObject;

public class ApiDocParser {

    public static void main(String[] args) {
        try {
            // URL to the doc-api.json file
            String apiDocUrl = "http://example.com/doc-api.json";

            // Fetch the content of the API doc
            String apiDocContent = fetchContentFromUrl(apiDocUrl);

            // Parse the JSON content
            JSONObject apiDocJson = new JSONObject(apiDocContent);

            // Assume the API methods are listed under a key called "methods"
            JSONArray methods = apiDocJson.getJSONArray("methods");

            for (int i = 0; i < methods.length(); i++) {
                JSONObject method = methods.getJSONObject(i);

                // Only process GET methods
                if ("GET".equalsIgnoreCase(method.getString("method"))) {
                    String url = method.getString("url");
                    JSONObject params = method.getJSONObject("params");

                    System.out.println("GET Method URL: " + url);
                    System.out.println("Parameters: " + formatParams(params));
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static String fetchContentFromUrl(String urlString) throws Exception {
        StringBuilder result = new StringBuilder();
        URL url = new URL(urlString);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");

        try (BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()))) {
            String line;
            while ((line = reader.readLine()) != null) {
                result.append(line);
            }
        }

        return result.toString();
    }

    private static String formatParams(JSONObject params) {
        StringBuilder formattedParams = new StringBuilder();
        Iterator<String> keys = params.keys();

        while (keys.hasNext()) {
            String key = keys.next();
            String value = params.getString(key);

            formattedParams.append(key).append("=").append(value);
            if (keys.hasNext()) {
                formattedParams.append("&");
            }
        }

        return formattedParams.toString();
    }
}

在这个示例中：