微信模板消息测试

package icu.flycode.sdk.domain.models;

import java.util.HashMap;
import java.util.Map;

public class Message {
    // 发送给指定用户
    private String touser = "xxx";
    // 模板id
    private String template_id = "xxx";
    // 用户点击可以跳转指定链接
    private String url = "xxxx";
    private Map<String, Map<String, String>> data = new HashMap<>();

    public void put(String key, String value) {
        data.put(key, new HashMap<String, String>() {
            private static final long serialVersionUID = 7092338402387318563L;

            {
                put("value", value);
            }
        });
    }

    public String getTouser() {
        return touser;
    }

    public void setTouser(String touser) {
        this.touser = touser;
    }

    public String getTemplate_id() {
        return template_id;
    }

    public void setTemplate_id(String template_id) {
        this.template_id = template_id;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public Map<String, Map<String, String>> getData() {
        return data;
    }

    public void setData(Map<String, Map<String, String>> data) {
        this.data = data;
    }
}

package icu.flycode.sdk.utils;

import com.alibaba.fastjson2.JSON;

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

public class WXAccessTokenUtils {

    private static final String APPID = "xxx";
    private static final String SECRET = "xxxx";
    private static final String GRANT_TYPE = "client_credential";
    private static final String URL_TEMPLATE = "https://api.weixin.qq.com/cgi-bin/token?grant_type=%s&appid=%s&secret=%s";

    public static String getAccessToken() {
        try {
            String urlString = String.format(URL_TEMPLATE, GRANT_TYPE, APPID, SECRET);
            URL url = new URL(urlString);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("GET");

            int responseCode = connection.getResponseCode();
            System.out.println("Response Code: " + responseCode);

            if (responseCode == HttpURLConnection.HTTP_OK) {
                BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                String inputLine;
                StringBuilder response = new StringBuilder();

                while ((inputLine = in.readLine()) != null) {
                    response.append(inputLine);
                }
                in.close();

                // Print the response
                System.out.println("Response: " + response.toString());

                Token token = JSON.parseObject(response.toString(), Token.class);

                return token.getAccess_token();
            } else {
                System.out.println("GET request failed");
                return null;
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    public static class Token {
        private String access_token;
        private Integer expires_in;

        public String getAccess_token() {
            return access_token;
        }

        public void setAccess_token(String access_token) {
            this.access_token = access_token;
        }

        public Integer getExpires_in() {
            return expires_in;
        }

        public void setExpires_in(Integer expires_in) {
            this.expires_in = expires_in;
        }
    }
}

    @Test
    public void test_wx() {
        String accessToken = WXAccessTokenUtils.getAccessToken();
        System.out.println("accessToken:" + accessToken);

        Message message = new Message();
        message.put("project", "测试项目");
        message.put("review", "测试内容");
        String url = String.format("https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=%s", accessToken);
        sendPostRequest(url, JSON.toJSONString(message));

    }

    private static void sendPostRequest(String urlString, String jsonBody) {
        try {
            URL url = new URL(urlString);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Content-Type", "application/json; utf-8");
            conn.setRequestProperty("Accept", "application/json");
            conn.setDoOutput(true);

            try (OutputStream os = conn.getOutputStream()) {
                byte[] input = jsonBody.getBytes(StandardCharsets.UTF_8);
                os.write(input, 0, input.length);
            }

            try (Scanner scanner = new Scanner(conn.getInputStream(), StandardCharsets.UTF_8.name())) {
                String response = scanner.useDelimiter("\\A").next();
                System.out.println(response);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }