3,157
社区成员




public String sendFileToWechat(String access_token, String fileType, File file, MultipartFile mfile) throws Exception {
String result = null;
if (!file.exists() || !file.isFile()) {
throw new IOException("文件不存在");
}
HttpURLConnection conn = null;
String BOUNDARY = "----------" + System.currentTimeMillis();
try {
URL urlObj = new URL("https://api.weixin.qq.com/cgi-bin/material/add_material?access_token=" + access_token + "&type=" + fileType + "");
conn = (HttpURLConnection) urlObj.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false); // post方式不能使用缓存
// 设置请求头信息
conn.setRequestMethod("POST"); // 以Post方式提交表单,默认 GET 方式
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Charset", "UTF-8");
conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
// 获得输出流
OutputStream out = new DataOutputStream(conn.getOutputStream());
/*StringBuffer strBuf = new StringBuffer();
strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");
strBuf.append("Content-Disposition: form-data; name=\"type\"\r\n\r\n");
strBuf.append(fileType);
out.write(strBuf.toString().getBytes());*/
StringBuilder sb = new StringBuilder();
sb.append("\r\n").append("--").append(BOUNDARY).append("\r\n"); // 必须多两道线
sb.append("Content-Disposition: form-data;name=\"media\";filename=\"" + mfile.getName() + "\"\r\n");
String contentType = new MimetypesFileTypeMap().getContentType(file);
sb.append("Content-Type:"+contentType+"\r\n\r\n");
byte[] head = sb.toString().getBytes();
// 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;
// 定义BufferedReader输入流来读取URL的响应
reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
if (result == null) {
result = buffer.toString();
}
reader.close();
reader = null;
} catch (IOException e) {
e.printStackTrace();
throw new IOException("数据读取异常");
} finally {
if (conn != null) {
conn.disconnect();
conn = null;
}
}
return result;
}
public Media mediaUploadGraphic(String access_token, MediaType mediaType, File media) {
Media weixinMedia = new Media();
String result = null;
try {
// 拼装请求地址
String uploadMediaUrl = String.format(
"http://api.weixin.qq.com/cgi-bin/material/add_material?access_token=%1s&type=%2s",
access_token,
mediaType.name());
URL url = new URL(uploadMediaUrl);
//File file = new File("mediaFileUrl");
if (!media.exists() || !media.isFile()) {
System.out.println("上传的文件不存在");
}
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("POST"); // 以Post方式提交表单,默认get方式
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");
String filename = media.getName();
sb.append("Content-Disposition: form-data;name=\"media\";filename=\"" + filename + "\" \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(media));
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;
// 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();
}
System.out.println(result);
// 解析返回结果
Map jsonObject = gson.fromJson(result, Map.class);
if (jsonObject.get("errcode") != null) {
weixinMedia.setErrcode(jsonObject.get("errcode").toString());
weixinMedia.setErrmsg(jsonObject.get("errmsg").toString());
return weixinMedia;
}
weixinMedia.setType(mediaType.name());
weixinMedia.setUrl(jsonObject.get("url").toString());
// type等于thumb时的返回结果和其它类型不一样
if ("thumb".equals(mediaType.name())) {
weixinMedia.setMedia_id(jsonObject.get("thumb_media_id").toString());
} else {
weixinMedia.setMedia_id(jsonObject.get("media_id").toString());
}
} catch (IOException e) {
System.out.println("发送POST请求出现异常!" + e);
e.printStackTrace();
} finally {
}
return weixinMedia;
}