android如何向servlet传两个String类型数据再接收该servlet传回的数据完整代码

以下是一个完整的示例代码，其中将 `param1` 和 `param2` 作为 GET 请求的参数传递给 servlet，并接收 servlet 返回的结果：

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

public class ServletClient {
    public static String requestServlet(String param1, String param2) {
        try {
            // 构造 URL 对象
            String urlString = "http://your.server.com/servlet";
            String query = String.format("param1=%s&param2=%s", URLEncoder.encode(param1, "UTF-8"), URLEncoder.encode(param2, "UTF-8"));
            URL url = new URL(urlString + "?" + query);

            // 打开连接并设置请求方法和头部信息
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

            // 发送请求并获取返回结果
            InputStream in = new BufferedInputStream(conn.getInputStream());
            String response = readStream(in);

            return response;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    private static String readStream(InputStream in) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(in));
        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = reader.readLine()) != null) {
            sb.append(line);
        }
        reader.close();
        return sb.toString();
    }
}

在 servlet 中，可以通过 `request.getParameter("param1")` 和 `request.getParameter("param2")` 获取客户端传来的参数，并进行处理后返回结果。例如：

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class MyServlet extends HttpServlet {
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String param1 = request.getParameter("param1");
        String param2 = request.getParameter("param2");

        // 处理参数并返回结果
        String result = handleRequest(param1, param2);

        // 返回结果
        response.setContentType("text/plain;charset=UTF-8");
        PrintWriter out = response.getWriter();
        out.println(result);
        out.close();
    }

    private String handleRequest(String param1, String param2) {
        // 处理请求并返回结果
        return "Hello, " + param1 + " and " + param2 + "!";
    }
}