本文实例为大家分享了java实现上传网络图片到微信临时素材的具体代码,供大家参考,具体内容如下
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package org.afuos.playcontrol.service; import com.alibaba.fastjson.json; import com.alibaba.fastjson.jsonobject; import java.io.*; import java.net.httpurlconnection; import java.net.url; /** * created by mohon on 2017/8/10. */ public class uploadpictowx { /** * 网络图片上传到微信服务器 * * @param urlpath 图片路径 * @return jsonobject * @throws exception */ public string getmediaidfromurl(string urlpath, string filetype) throws exception { string result = null ; string url = "http://file.api.weixin.qq.com/cgi-bin/media/upload?access_token= access_token &type=" + filetype + "" ; string filename = urlpath.substring(urlpath.lastindexof( "/" ) + 1 ); // 获取网络图片 url mediaurl = new url(urlpath); httpurlconnection meidaconn = (httpurlconnection) mediaurl.openconnection(); meidaconn.setdooutput( true ); meidaconn.setrequestmethod( "get" ); /** * 第一部分 */ url urlobj = new url(url); httpurlconnection con = (httpurlconnection) urlobj.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" ); 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(meidaconn.getinputstream()); 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(); meidaconn.disconnect(); 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) { log.info( "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 = json.parseobject(result); log.info( "getmediaid jsonobj: {}" , jsonobj); return jsonobj.getstring( "media_id" ); } } |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/rentian1/article/details/81104190