吐槽：微信api很无语。有一部分xml。有一部分json。

最近看如何调用微信公众平台json有关api更方便。终于找到了httpcliect和gson对。

假设你有一个更好的办法，请告诉我。

了解如何先使用下面的代码gson和httpclient，有功夫再整到我的sophia里，呵呵。

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.util.HashMap;
import java.util.Map;import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpResponseException;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonObject;public class JsonTest {/*** 获取access token* @return* @throws ClientProtocolException* @throws IOException*/public static String getToken() throws ClientProtocolException, IOException {CloseableHttpClient httpclient = HttpClients.createDefault();//String appid = "eeeeeeee";String secret = "eeeeeeeeeeeeeeee";HttpGet httpget = new HttpGet("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + secret) ;ResponseHandler<JsonObject> rh = new ResponseHandler<JsonObject>() {@Overridepublic JsonObject handleResponse(final HttpResponse response) throws IOException {StatusLine statusLine = response.getStatusLine();HttpEntity entity = response.getEntity();if (statusLine.getStatusCode() >= 300) {throw new HttpResponseException(statusLine.getStatusCode(),statusLine.getReasonPhrase());}if (entity == null) {throw new ClientProtocolException("Response contains no content");}Gson gson = new GsonBuilder().create();//ContentType contentType = ContentType.getOrDefault(entity);//Charset charset = contentType.getCharset();Reader reader = new InputStreamReader(entity.getContent());return gson.fromJson(reader, JsonObject.class);}};JsonObject myjson = httpclient.execute(httpget, rh);System.out.println(myjson.get("access_token").getAsString());return myjson.get("access_token").getAsString();}/*** 下载文件* @throws ClientProtocolException* @throws IOException*/public static void  downloadMediaFile(String token) throws ClientProtocolException, IOException {String mediaId = "fdsddddddddddd";String url = "http://file.api.weixin.qq.com/cgi-bin/media/get?

access_token=ACCESS_TOKEN&media_id=MEDIA_ID"; url = url.replaceAll("ACCESS_TOKEN", token); url = url.replaceAll("MEDIA_ID", mediaId); CloseableHttpClient httpclient = HttpClients.createDefault(); HttpGet httpget = new HttpGet(url); CloseableHttpResponse response = httpclient.execute(httpget); try { HttpEntity entity = response.getEntity(); if (entity != null) { long len = entity.getContentLength(); if (len != -1) { byte[] content = EntityUtils.toByteArray(entity); System.out.println(response.getStatusLine()); OutputStream os = new FileOutputStream("/Users/sssss/abc.jpg"); // 開始读取 os.write(content); // 完成，关闭全部链接 os.close(); } else { // Stream content out } } } finally { response.close(); } } /** * post json格式数据包 ----- 客服消息 * @param map * @throws ClientProtocolException * @throws IOException */ public static void postJsonData(Map map) throws ClientProtocolException, IOException { String token = "lv3s0iunvVvEj9K3bz12xofvXfW1916ePLqZ7mN6mx7reY-IDzPTrwoErd4pSMD4eSps56QbmbaQ"; String url = "https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=ACCESS_TOKEN"; url = url.replaceAll("ACCESS_TOKEN", token); CloseableHttpClient httpclient = HttpClients.createDefault(); Gson gson = new Gson(); StringEntity entity = new StringEntity(gson.toJson(map), ContentType.create("plain/text", Consts.UTF_8)); entity.setChunked(true); HttpPost httppost = new HttpPost(url); httppost.setEntity(entity); CloseableHttpResponse response = httpclient.execute(httppost); System.out.println(response.getStatusLine()); } public static void main(String[] args) throws ClientProtocolException, IOException { String token = getToken(); downloadMediaFile(token); //客服消息 Map map = new HashMap(); map.put("touser", "o3Y0et021tT_MVK2bdY1DhSWwFCc"); map.put("msgtype", "text"); Map m = new HashMap(); m.put("content", "hello world"); map.put("text", m); postJsonData(map); } }

不好意思，昨天晚上发表文章，csdn老失败。

导致只有一个标题。