微信图文素材-公共方法

/**
 * 公共method 替换 内容图片地址
 * json化上传内容 (遗留问题-特殊符合被转译)
 * @param groupWxMessage
 * @param access_token
 * @return
 * @throws IOException
 */
net.sf.json.JSONObject getJsonObject(GroupWxMessage groupWxMessage, String access_token) throws IOException {
    String content = groupWxMessage.getContent();
    String key ="src=\"";
    int a = content.indexOf(key);
    if(a != -1){
        String thsrcContent = thsrc(content, a, access_token);
        groupWxMessage.setContent(thsrcContent);
    }
    List<TuWenOutDTO> articles = new ArrayList<TuWenOutDTO>();
    TuWenOutDTO article = new TuWenOutDTO();
    article.setTitle(groupWxMessage.getTitle());
    article.setThumb_media_id(groupWxMessage.getThumbMediaId());
    article.setShow_cover_pic(groupWxMessage.getShowCoverPic());
    article.setDigest(groupWxMessage.getDigest());
    article.setContent_source_url(groupWxMessage.getContentSourceUrl());
    article.setContent(groupWxMessage.getContent());
    article.setAuthor(groupWxMessage.getAuthor());
    articles.add(article);
    List<TuWenOutDTO> list = new ArrayList<>();
    list.add(article);
    Map<String, Object> params = new HashMap<>();
    params.put("articles", list);
    net.sf.json.JSONObject json1 = net.sf.json.JSONObject.fromObject(params);
    return json1;
}

/**
 * 内容Content中图片地址替换
 * @param content
 * @param index
 * @param access_token
 * @return
 * @throws IOException
 */
private String thsrc(String content,int index,String access_token) throws IOException {

    int srcStart = content.indexOf("src=\"",index); //获取src出现的位置
    int srcEnd = content.indexOf("\"",srcStart+62);
    srcStart = srcStart + 5;
    String src = content.substring(srcStart,srcEnd); //获取图片路径

    //执行上传图片方法
    String img = saveUrlAs(src);
    net.sf.json.JSONObject scptjgJson = wxPhotoUpload.addContentPicture(img, "image", access_token);
    String newPath = scptjgJson.getString("url");
    //替换字符串中该图片路径
    content = content.replace(src, newPath);
    //查看字符串下方是否还有img标签
    int sfhyImg = content.indexOf("<img",srcEnd);
    if(sfhyImg==-1){
        return content;
    }else{
        return thsrc(content, srcEnd,access_token);
    }

}
/**
 * 通过url生成本地临时文件
 * @param photoUrl
 * @return
 */
public static String saveUrlAs(String photoUrl) throws IOException {
    //此方法只能用户HTTP协议
    String fileName = dateToTimestamp(DateUtil.getTime()) + MadeKey.getKey() + ".jpg";
    System.out.println(fileName);
        URL url = new URL(photoUrl);
        java.net.HttpURLConnection connection = (java.net.HttpURLConnection) url.openConnection();
        DataInputStream in = new DataInputStream(connection.getInputStream());
        DataOutputStream out = new DataOutputStream(new FileOutputStream(fileName));
        byte[] buffer = new byte[4096];
        int count = 0;
        while ((count = in.read(buffer)) > 0) {
            out.write(buffer, 0, count);
        }
        out.close();
        in.close();
        return fileName;
}