上传图文消息内的图片获取URL
本接口所上传的图片不占用公众号的素材库中图片数量的5000个的限制。图片仅支持jpg/png格式,大小必须在1MB以下。接口调用请求说明
http请求方式: POST,https协议
https://api.weixin.qq.com/cgi-bin/media/uploadimg?access_token=ACCESS_TOKEN
调用示例(使用curl命令,用FORM表单方式上传一个图片):
curl -F [email protected] “https://api.weixin.qq.com/cgi-bin/media/uploadimg?access_token=ACCESS_TOKEN”
参数说明参数 是否必须 说明
access_token 是 调用接口凭证
media 是 form-data中媒体文件标识,有filename、filelength、content-type等信息
返回说明 正常情况下的返回结果为:{
“url”: “http://mmbiz.qpic.cn/mmbiz/gLO17UPS6FS2xsypf378iaNhWacZ1G1UplZYWEYfwvuU6Ont96b1roYs CNFwaRrSaKTPCUdBK9DgEHicsKwWCBRQ/0”
}
其中url就是上传图片的URL,可放置图文消息中使用。
/**
* 上传图文消息内的图片获取URL
* @param file
* @param access
* @return
*/
private String getUpWxImgUrl(File file,String access) {
String url = WX_IMG_UP_URL + access;
String jsonStr = FormUpdate.formUpload(url, file);
String returnUrl = "";
if(jsonStr.indexOf("errcode") == -1) {
JSONObject jsonObject = JSON.parseObject(jsonStr);
returnUrl = jsonObject.get("url").toString();
}
return returnUrl;
}
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import javax.activation.MimetypesFileTypeMap;
public class FormUpdate {
/**
* 上传图片
*
* @param urlStr
* @param textMap
* @param fileMap
* @return
*/
public static String formUpload(String urlStr, File file) {
String res = "";
HttpURLConnection conn = null;
String BOUNDARY = "---------------------------123821742118716"; // boundary就是request头和上传文件内容的分隔符
try {
URL url = new URL(urlStr);
conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(30000);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
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);
OutputStream out = new DataOutputStream(conn.getOutputStream());
// file
String inputName = "";
String filename = file.getName();
String contentType = new MimetypesFileTypeMap().getContentType(file);
if (filename.endsWith(".png")) {
contentType = "image/png";
}
if (contentType == null || contentType.equals("")) {
contentType = "application/octet-stream";
}
StringBuffer strBuf = new StringBuffer();
strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");
strBuf.append(
"Content-Disposition: form-data; name=\"" + inputName + "\"; filename=\"" + filename + "\"\r\n");
strBuf.append("Content-Type:" + contentType + "\r\n\r\n");
out.write(strBuf.toString().getBytes());
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();
byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();
out.write(endData);
out.flush();
out.close();
// 读取返回数据
StringBuffer strBuf2 = new StringBuffer();
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
strBuf2.append(line).append("\n");
}
res = strBuf2.toString();
reader.close();
reader = null;
} catch (Exception e) {
e.printStackTrace();
} finally {
if (conn != null) {
conn.disconnect();
conn = null;
}
}
return res;
}
}