富文本的图片处理工具类

public class HtmlImg {

    private String content;

    private List<String> keys;//图片key

    //返回处理过的Json
    public String getJsonKeys() {
        return JSON.toJSONString(this.getKeys());
    }

    /*
     * 编辑时处理富文本图片路径
     * wmy 13:41 2019/5/10
     * @Param [contentImgs]
     * @return java.lang.String
     **/
    public String updateKeys(String contentImgs) {
        Set<String> imgImgs = new HashSet<>();
        //之前从数据库里查出来的路径
        if (contentImgs != null) {
            List<String> oldKeys = JSON.parseArray(contentImgs, String.class);
            if (oldKeys != null && oldKeys.size() > 0) {
                imgImgs.addAll(oldKeys);
            }
        }
        //新加入的路径
        if (this.keys != null && this.keys.size() > 0) {
            imgImgs.addAll(this.keys);
        }
        return JSON.toJSONString(imgImgs);
    }

}

/**
     * 替换富文本中的图片为域名地址
     * @param htm
     * @return
     */
    public static HtmlImg replaceBase64Img(String htm) {
        HtmlImg htmlImg = new HtmlImg();
        String[] list = htm.split("<img src=\"data:image/png;base64,");
        System.out.println(list.length);
        List<String> imgKeys = new ArrayList<>();
        if(list.length>1){
            String base64str,imgKey;
            StringBuilder sb = new StringBuilder();
            sb.append(list[0]);
            for(int i=1;i<list.length;i++){
                base64str = list[i].substring(0,list[i].indexOf("\">"));
                imgKey = ImageUtil.uploadImg(base64str);
                imgKeys.add(imgKey);
                sb.append("<img src=\"");
                sb.append(CommonConfig.STATIC_URL);
                sb.append(imgKey);
                sb.append(list[i].substring(list[i].indexOf("\">")));
            }
            htmlImg.setContent(sb.toString());
            htmlImg.setKeys(imgKeys);
        } else{
            htmlImg.setContent(htm);
        }
        return htmlImg;
    }