代码：（copy别人的，时间久了忘了出路，见谅！）
import java.io.BufferedReader;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.HttpURLConnection;import java.net.URL;import java.security.KeyManagementException;import java.security.NoSuchAlgorithmException;import java.security.NoSuchProviderException;import net.sf.json.JSONObject;import util.AccessTokenUtil;public class Upload { public static void main(String[] args) { try { String path = "C:/1.jpg"; JSONObject object = addMaterialEver(path,"image",AccessTokenUtil.getAccessToken()); System.out.println(object.toString()); } catch (Exception e) { System.out.println("---"); } } public static String connectHttpsByPost(String path, String KK, File file) throws IOException, NoSuchAlgorithmException, NoSuchProviderException, KeyManagementException { URL urlObj = new URL(path); //连接 HttpURLConnection con = (HttpURLConnection) urlObj.openConnection(); String result = null; con.setRequestMethod("POST"); con.setDoInput(true); con.setDoOutput(true); con.setUseCaches(false); // post方式不能使用缓存 // 设置请求头信息 con.setRequestProperty("Connection", "Keep-Alive"); con.setRequestProperty("Charset", "UTF-8"); // 设置边界 String BOUNDARY = "----------" + System.currentTimeMillis(); con.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY); // 请求正文信息 // 第一部分： StringBuilder sb = new StringBuilder(); sb.append("--"); // 必须多两道线 sb.append(BOUNDARY); sb.append("\r\n"); sb.append("Content-Disposition: form-data;name=\"media\";filelength=\"" + file.length() + "\";filename=\"" + file.getName() + "\"\r\n"); sb.append("Content-Type:application/octet-stream\r\n\r\n"); byte[] head = sb.toString().getBytes("utf-8"); // 获得输出流 OutputStream out = new DataOutputStream(con.getOutputStream()); // 输出表头 out.write(head); // 文件正文部分 // 把文件已流文件的方式 推入到url中 DataInputStream in = new DataInputStream(new FileInputStream(file)); int bytes = 0; byte[] bufferOut = new byte[1024]; while ((bytes = in.read(bufferOut)) != -1) { out.write(bufferOut, 0, bytes); } in.close(); // 结尾部分 byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");// 定义最后数据分隔线 out.write(foot); out.flush(); out.close(); StringBuffer buffer = new StringBuffer(); BufferedReader reader = null; try { // 定义BufferedReader输入流来读取URL的响应 reader = new BufferedReader(new InputStreamReader(con.getInputStream())); String line = null; while ((line = reader.readLine()) != null) { buffer.append(line); } if (result == null) { result = buffer.toString(); } } catch (IOException e) { System.out.println("发送POST请求出现异常！" + e); e.printStackTrace(); } finally { if (reader != null) { reader.close(); } } return result; } /** * 上传其他永久素材(图片素材的上限为5000，其他类型为1000) * * @return * @throws Exception */ public static JSONObject addMaterialEver(String fileurl, String type, String token) { try { File file = new File(fileurl); //上传素材 String path = "https://api.weixin.qq.com/cgi-bin/material/add_material?access_token=" + token + "&type=" + type; String result = connectHttpsByPost(path, null, file); result = result.replaceAll("[\\\\]", ""); System.out.println("result:" + result); JSONObject resultJSON = JSONObject.fromObject(result); if (resultJSON != null) { if (resultJSON.get("media_id") != null) { System.out.println("上传" + type + "永久素材成功"); return resultJSON; } else { System.out.println("上传" + type + "永久素材失败"); } } return null; } catch (IOException e) { e.printStackTrace(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (NoSuchProviderException e) { e.printStackTrace(); } catch (KeyManagementException e) { e.printStackTrace(); } return null; } } 下面两个类是作者自己的
AccessTokenUtil
package util;import java.io.BufferedReader;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStreamReader;import java.io.UnsupportedEncodingException;/** * @todo 获取ACCESSTOKEN和jsapi_ticket * @author zhangyanan * @date 2018年7月31日 */public class AccessTokenUtil { /** * @todo 获取ACCESSTOKEN * @author zhangyanan * @date 2018年7月31日 */ public static String getAccessToken() { InputStreamReader read = null; BufferedReader bufferedReader = null; String ACCESSTOKEN = ""; try { read = new InputStreamReader(new FileInputStream(ConfigUtil.getProperty("accesstokenpath")), "UTF-8"); bufferedReader = new BufferedReader(read); ACCESSTOKEN=bufferedReader.readLine(); System.out.println("ACCESSTOKEN:"+ACCESSTOKEN); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { bufferedReader.close(); read.close(); } catch (Exception e) { e.printStackTrace(); } } return ACCESSTOKEN; } /** * @todo 获取jsapi_ticket * @author zhangyanan * @date 2018年7月31日 */ public static String getJsApiTicket() { InputStreamReader read = null; BufferedReader bufferedReader = null; String ACCESSTOKEN = ""; try { read = new InputStreamReader(new FileInputStream(ConfigUtil.getProperty("ticketpath")), "UTF-8"); bufferedReader = new BufferedReader(read); ACCESSTOKEN=bufferedReader.readLine(); System.out.println("ACCESSTOKEN:"+ACCESSTOKEN); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { bufferedReader.close(); read.close(); } catch (Exception e) { e.printStackTrace(); } } return ACCESSTOKEN; }} 生成AccessToken：
package task;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.scheduling.annotation.Scheduled;import org.springframework.stereotype.Service;import net.sf.json.JSONObject;import util.ConfigUtil;import util.HttpRequest;@Servicepublic class AccessTokenController { private static final Logger logger = LoggerFactory.getLogger(AccessTokenController.class); @Scheduled(cron = "0/30 * * * * ? ") public void wxServerWork() { String json = HttpRequest.sendGet("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + ConfigUtil.getProperty("APPID") + "&secret=" + ConfigUtil.getProperty("APPSECRET")); logger.info(json); String ACCESSTOKEN = (String) JSONObject.fromObject(json).get("access_token"); logger.info("access_token:\r\n" + ACCESSTOKEN);// 网页授权access_token //get jsapi_ticket getAndSaveJsapiTicket(ACCESSTOKEN); fileWriter(ConfigUtil.getProperty("accesstokenpath"), ACCESSTOKEN); } /** * @todo 获取jsapi_ticket * @author zhangyanan * @param accesstoken * @date 2018年7月31日 */ private void getAndSaveJsapiTicket(String accesstoken){ String url="https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+accesstoken+"&type=jsapi"; String sendGet = HttpRequest.sendGet(url); logger.info("sendGet"+sendGet); JSONObject fromObject = JSONObject.fromObject(sendGet); if(fromObject.getInt("errcode")==0){ fileWriter(ConfigUtil.getProperty("ticketpath"), fromObject.getString("ticket")); }else{ //获取签名失败 logger.error("获取微信签名失败，errorcode："+fromObject.getInt("errcode")+"\terrorMsg:"+fromObject.getString("errmsg")); } } /** * @todo 向文件中写入数据 * @author zhangyanan. * @param path 写入文件路径 * @param content 写入的内容 * @date 2018年7月31日 */ private void fileWriter(String path,String content){ FileOutputStream out = null; try { out = new FileOutputStream(path); out.write(content.getBytes()); logger.info("获取AccessToken成功！"); } catch (FileNotFoundException e) { logger.info("获取AccessToken失败！"); e.printStackTrace(); } catch (IOException e) { logger.info("获取AccessToken失败！"); e.printStackTrace(); } finally { try { out.close(); } catch (IOException e) { logger.error("fileWriter关闭异常"+e); } } }}