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public JsonObject uploadFile(String filePath)
throws Exception {
String access_token = AccessTokenThread.accessToken.getAccess_token();
// 上传文件请求路径
String action = "http://file.api.weixin.qq.com/cgi-bin/material/add_material?access_token="
+ access_token;
URL url = new URL(action);
String result = null;
File file = new File(filePath);
if (!file.exists() || !file.isFile()) {
throw new IOException("上传的文件不存在");
}
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false); // post方式不能使用缓存
con.setRequestMethod("POST"); // 以Post方式提交表单,默认get方式
// 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=\"file\";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();
throw new IOException("数据读取异常");
} finally {
if (reader != null) {
reader.close();
}
}
// JSONObject jsonObj = new JSONObject(result);
// return jsonObj;
JsonParser jsonparer = new JsonParser();// 初始化解析json格式的对象
JsonObject json = jsonparer.parse(result).getAsJsonObject();
System.out.println(json);
return json;
}
代码如上,运行一直报错,
java.net.SocketException: Unexpected end of file from server