java 微信请求_java给微信发送get和post请求

Java可以使用HttpURLConnection或者HttpClient来发送get和post请求到微信接口。以下是示例代码：

使用HttpURLConnection发送get请求：

URL url = new URL("https://api.weixin.qq.com/cgi-bin/user/get?access_token=ACCESS_TOKEN&next_openid=NEXT_OPENID");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.connect();
int responseCode = connection.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_OK) {
    BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();
    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();
    System.out.println(response.toString());
} else {
    System.out.println("GET request failed, response code: " + responseCode);
}

使用HttpURLConnection发送post请求：

String url = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=ACCESS_TOKEN";
URL obj = new URL(url);
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
con.setRequestMethod("POST");

// 设置post请求参数
String urlParameters = "json data...";
con.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(con.getOutputStream());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();

int responseCode = con.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_OK) {
    BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();
    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();
    System.out.println(response.toString());
} else {
    System.out.println("POST request failed, response code: " + responseCode);
}

使用HttpClient发送get请求：

CloseableHttpClient httpClient = HttpClients.createDefault();
HttpGet httpGet = new HttpGet("https://api.weixin.qq.com/cgi-bin/user/get?access_token=ACCESS_TOKEN&next_openid=NEXT_OPENID");
CloseableHttpResponse response = httpClient.execute(httpGet);
try {
    HttpEntity entity = response.getEntity();
    String responseBody = EntityUtils.toString(entity, "UTF-8");
    EntityUtils.consume(entity);
    System.out.println(responseBody);
} finally {
    response.close();
}

使用HttpClient发送post请求：

CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost httpPost = new HttpPost("https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=ACCESS_TOKEN");

// 设置post请求参数
StringEntity entity = new StringEntity("json data...", ContentType.APPLICATION_JSON);
httpPost.setEntity(entity);

CloseableHttpResponse response = httpClient.execute(httpPost);
try {
    HttpEntity responseEntity = response.getEntity();
    String responseBody = EntityUtils.toString(responseEntity, "UTF-8");
    EntityUtils.consume(responseEntity);
    System.out.println(responseBody);
} finally {
    response.close();
}