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这两天在网上看了其他的方法，也调试了一些，然后自己整理了一下，方便自己学习，也方便大家使用。

调用接口

1、java调用上传图片接口

public final static String IMAGE = "https://api.weixin.qq.com/cgi-bin/media/uploadimg?access_token=ACCESS_TOKEN";public staticString uploadimg(MultipartFile file ) {

CloseableHttpClient client=HttpClients.createDefault();//创建httppost

String requestUrl = IMAGE.replace("ACCESS_TOKEN", access_token);//替换调access_token

HttpPost post = newHttpPost(requestUrl);

RequestConfig config= RequestConfig.custom().setSocketTimeout(30000).setConnectTimeout(20000).build();

post.setConfig(config);

File f= null;try{

f= newFile(file.getOriginalFilename());

inputStreamToFile(file.getInputStream(),f);

FileUtils.copyInputStreamToFile(file.getInputStream(), f);

}catch(IOException e) {

e.printStackTrace();

}

String name=f.getName();

FileBody fileBody= newFileBody(f, ContentType.DEFAULT_BINARY,name);

String filename=fileBody.getFilename();long contentLength =fileBody.getContentLength();

ContentType contentType=fileBody.getContentType();

MultipartEntityBuilder builder=MultipartEntityBuilder.create();

builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);

builder.addPart("media", fileBody);//相当于 ,匹配@RequestParam("file")//.addPart()可以设置模拟浏览器的表单提交

HttpEntity entity =builder.build();

post.setEntity(entity);

String result= "";try{

CloseableHttpResponse e=client.execute(post);

HttpEntity resEntity=e.getEntity();if(entity != null) {

result=EntityUtils.toString(resEntity);

System.out.println("response content:" +result);

}

}catch(IOException var10) {

System.out.println("请求解析验证码io异常 "+var10);//logger.error("请求解析验证码io异常",var10);

var10.printStackTrace();

}returnresult;

}public static voidinputStreamToFile(InputStream ins, File file) {try{

OutputStream os= newFileOutputStream(file);int bytesRead = 0;byte[] buffer = new byte[8192];while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {

os.write(buffer,0, bytesRead);

}

os.close();

ins.close();

}catch(Exception e) {

e.printStackTrace();

}

}

2、新增永久图片素材

只需要修改 requestUrl

public final static String ADD_MATERIAL_IMAGE = "https://api.weixin.qq.com/cgi-bin/material/add_material?access_token=ACCESS_TOKEN&type=TYPE";

3、新增永久视频素材

public final static String ADD_MATERIAL_IMAGE = "https://api.weixin.qq.com/cgi-bin/material/add_material?access_token=ACCESS_TOKEN&type=TYPE";/*** 上传永久素材(除 图文)

*@paramfile

*@paramtype

*@paramtitle type为video时需要,其他类型设null

*@paramintroduction type为video时需要,其他类型设null

*@return{"media_id":MEDIA_ID,"url":URL}*/

public staticString uploadPermanentMaterial(File file, String type, String title, String introduction) {

String url= ADD_MATERIAL_IMAGE.replace("ACCESS_TOKEN", access_token).replace("TYPE", type);//替换调access_token

String result = null;try{

URL uploadURL= newURL(url);

HttpURLConnection conn=(HttpURLConnection) uploadURL.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("Cache-Control", "no-cache");

String boundary= "-----------------------------" +System.currentTimeMillis();

conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" +boundary);

OutputStream output=conn.getOutputStream();

output.write(("--" + boundary + "\r\n").getBytes());

output.write(String.format("Content-Disposition: form-data; name=\"media\"; filename=\"%s\"\r\n", file.getName()).getBytes());

output.write("Content-Type: video/mp4 \r\n\r\n".getBytes());byte[] data = new byte[1024];int len = 0;

FileInputStream input= newFileInputStream(file);while ((len = input.read(data)) > -1) {

output.write(data,0, len);

}/*对类型为video的素材进行特殊处理*/

if ("video".equals(type)) {

output.write(("--" + boundary + "\r\n").getBytes());

output.write("Content-Disposition: form-data; name=\"description\";\r\n\r\n".getBytes());

output.write(String.format("{\"title\":\"%s\", \"introduction\":\"%s\"}", title, introduction).getBytes());

}

output.write(("\r\n--" + boundary + "--\r\n\r\n").getBytes());

output.flush();

output.close();

input.close();

InputStream resp=conn.getInputStream();

StringBuffer sb= newStringBuffer();while ((len = resp.read(data)) > -1)

sb.append(new String(data, 0, len, "utf-8"));

resp.close();

result=sb.toString();

}catch(IOException e) {//....

}returnresult;

}

上传视频的这个方法也可以上传其他素材。

4、上传永久图文素材

首先考虑传值，官方的示例

{"articles": [{"title": TITLE,"thumb_media_id": THUMB_MEDIA_ID,"author": AUTHOR,"digest": DIGEST,"show_cover_pic": SHOW_COVER_PIC(0 / 1),"content": CONTENT,"content_source_url": CONTENT_SOURCE_URL,"need_open_comment":1,"only_fans_can_comment":1},//若新增的是多图文素材，则此处应还有几段articles结构

]

}

1、直接put json,下面是一个简单的例子。这样很容易完成示例

//{ "tag":{ "id":134,//标签id "name":"广东" } }

JSONObject json1= newJSONObject();

json1.put("name", "广东");

JSONObject json= newJSONObject();

json.put("tag", json1);

2、使用实体类，可以参数与json转换

/*获取素材列表参数实体类**/

public classAddNewsParam {privateArticles [] articles;public classArticles {private String title;//图文消息的标题

private String thumb_media_id;//图文消息的封面图片素材id(必须是永久mediaID)

private String author;//作者

private String digest;//图文消息的摘要，仅有单图文消息才有摘要，多图文此处为空

private Integer show_cover_pic;//是否显示封面，0为false，即不显示，1为true，即显示

private String content;//图文消息的具体内容，支持HTML标签，必须少于2万字符，小于1M，且此处会去除JS