文章目录
前言一、数据准备二、图片上传指定服务器目录1. jsoup的方式解析出对应src内容2. base64图片上传指定服务器目录3. 更换src的内容为discuzQ论坛访问url 三、调用discuzQ论坛发布主题接口，完成主题添加1. spring boot 发送post请求 总结前言
功能需求的背景和可以解决的问题：
（1）存在两个服务，本平台（spring boot）和discuzQ论坛（PHP）。需要将本平台中录上的问题，包括标题，问题，解答等等内容，在平台测推送至论坛当中，并展现。
（2）平台和论坛两个服务对问题的格式显示有所不同，文本的影响并不大，主要影响点就在图片。平台上的图片是以image/png;base64的形式来展现的，论坛显示html文本并不支持此种格式的显示，此为需要解决的问题。
功能需求流程大体为：
（1）在本平台中获取到已经存储好的问题详情的html内容，此内容包含image/png;base64图片
（2）通过Jsoup，获取到html文本中img src的内容
（3）通过base64转换方式生成文件字节流，上传至论坛指定目录
（4）根据论坛服务生成访问图片url，并使用Jsoup替换
（5）spring boot 发送post请求，调用论坛发布主题接口，完成主题添加
一、数据准备
从平台中获取到问题详细内容，比如说有文本有image/png;base64图片：
String strData = "<p>以下为译文：</p><p>JavaScript的框架数量非常多，而且几乎每隔几个月就会有新的框架问世。我知道有些人对于层出不穷的JavaScript框架感到厌烦，因为这些新框架真的太多了。不过，还是有人坚持使用vanilla JavaScript。</p><p>这些JavaScript框架的出现实际上是为了方便开发者，帮助他们提高效率，使其能够产出更好的代码。</p><p>不过我想不仅仅是我，其他人也可能注意到了，这些框架随着时间的推移变得越来越复杂，反而失去了一些本应该带给开发者的好处——即节省开发者的时间。</p><p>我尝试的第一个框架是Angular 1，我花了相当多的时间来学习它。在那个时代，它非常棒。接着Angular 2出现了。Angular 2让我觉得它变得“焕然一新”（也许因为我当时是JavaScript的新手），感觉像是又重新学了个完全不同的框架。</p><p>后来，我又尝试使用了React，但感觉它太复杂了，甚至一开始就不符合我的需求。虽然这么说，但是不可否认的是，React依然是一个好的框架，只是不适合我。我认为React适合像Facebook这样的大型应用，但是不适合我这样创建只有少数人使用的简单网络应用的人。（这个观点可能不那么“讨喜”）</p><p>然后我又转向了Vue，对我来说，Vue是一股清流——它不需要我设置复杂的开发工具，只需要插入一个脚本标签，就能快速开始项目。</p><p class=\"ql-indent-1\"><img 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\"></p><p>（图源Vue.js官网）</p><p>学习起来也不是很复杂，而且它完全满足我的需求。所以Vue成了我心中的No.1框架，直到现在我仍然在使用它创建所有的东西。</p><p>再后来Vue 2出现了，其中有一些小的增量变化。而这时由于我已经有能力适应这些变化了，所以我并不在意这些改变。</p><p>另外还有一些别的框架，比如ViteJs和NuxtJs，我可以把它们作为基于Vue的框架使用，（我认为ViteJs现在已经独立于Vue，所以可以把它与其他框架如React和Svelte结合起来一起使用）。</p><p>没什么好抱怨的，因为从Vue 1切换到Vue 2也没有什么新东西需要学习的。</p><p>但是，更新换代似乎永远不会停止了。最近，Vue 3取代了Vue 2，成为默认版本。我相信开发者投入了大量的精力来开发和创造让Vue 3变得更好。</p><p>虽然从Vue 2迁移到Vue 3并不困难，但我觉得相比于Vue 1和Vue 2，Vue 3复杂了好几倍。Vue 3让我感觉好像丧失了生产力，而且使用Vue 1时享受的简单性似乎也不复存在了。</p><p>所以，为什么我们不能在使这些框架变得更好的同时，不使它们的使用变得更加复杂呢？这是不是不可能实现？</p><p>你是否遇到过这样的问题呢？你用过哪些好用的JavaScript的框架呢？欢迎留言告诉我们。</p>";
二、图片上传指定服务器目录
1. jsoup的方式解析出对应src内容
代码如下（示例）：
Document document = Jsoup.parse(strData);Elements elements = document.getElementsByTag("img");String base64Image = el.attr("src");
这样就可以拿到src中图片base64的数据
2. base64图片上传指定服务器目录
代码如下：
/*** 将base64字符串，生成文件** @param fileBase64String* @param filePath 是指定论坛服务器的文件目录路径* @param fileName 是上传图片的名称，此处UUID生成* @return*/public static File convertBase64ToFile(String fileBase64String, String filePath, String fileName) {BufferedOutputStream bos = null;FileOutputStream fos = null;File file = null;try {File dir = new File(filePath);//判断文件目录是否存在if (!dir.exists() && !dir.isDirectory()) {dir.mkdirs();}String[] baseStrs = fileBase64String.split(",");BASE64Decoder base64Decoder = new BASE64Decoder();byte[] bfile = base64Decoder.decodeBuffer(baseStrs[1]);file = new File(filePath + File.separator + fileName);fos = new FileOutputStream(file);bos = new BufferedOutputStream(fos);bos.write(bfile);return file;} catch (Exception e) {e.printStackTrace();} finally {if (bos != null) {try {bos.close();} catch (IOException e1) {e1.printStackTrace();}}if (fos != null) {try {fos.close();} catch (IOException e1) {e1.printStackTrace();}}}return null;}
注意：这里fileBase64String的参数，就是（1）中获取的base64Image，在上传中注意data:image/png;base64,iVBORw…传逗号后面的内容
3. 更换src的内容为discuzQ论坛访问url
代码如下，此处我连接第一步给一个整体示例：
/*** 替换image成url地址** @param strData*/public static String imageToFile(String strData){Document document = Jsoup.parse(strData);Elements elements = document.getElementsByTag("img");for (Element el : elements) {String base64Image = el.attr("src");String path = "上传discuzQ的目录路径";String name = UUID.randomUUID().toString().replaceAll("-", "") + ".png";File file = ImageToBase64Util.convertBase64ToFile(base64Image,path,name);String newUrl = "论坛服务器访问图片文件的路径，这个和上面的path不一定是同一个，注意服务器访问具体形式" + file.getName();el.attr("src",newUrl);}String newComment = document.body().toString();String result = newComment.substring(7, newComment.length() - 8);return result;}
newComment.substring(7, newComment.length() - 8);此处是自身业务需求，去掉了body标签，至此图文html已替换完成
三、调用discuzQ论坛发布主题接口，完成主题添加
1. spring boot 发送post请求
代码如下：
/*** post方式调用discuzQ接口保存数据** @param comment 这里就是已经替换过src内容的html文本* @throws Exception*/private static void postSendMessage(String comment) throws Exception {RestTemplate restTemplate = new RestTemplate();HttpHeaders headers = new HttpHeaders();MediaType type = MediaType.parseMediaType("application/json;charset=UTF-8");headers.setContentType(type);headers.add("Accept", "application/json, text/plain, */*");Theme theme = new Theme();theme.setTitle("平台推送问题");theme.setCategoryId(1);Content com = new Content();com.setText(comment);theme.setContent(com);HttpEntity<String> formEntity = new HttpEntity<String>(JSONUtil.toJsonStr(theme), headers);String url = "discuzQ论坛发布主题接口url";String result = restTemplate.postForObject(url, formEntity, String.class);JSONObject resultJsonObject = JSONObject.parseObject(result);if (resultJsonObject.get("Message").equals("接口调用成功")){System.out.println("接口调用成功");}else {throw new Exception("调用服务异常" + JSONUtil.toJsonStr(resultJsonObject.toJSONString()));}}
提示：这里本需求发送post请求到discuzQ论坛，是无登录状态模式下的推送，是根据自身业务已经调整过discuzQ论坛发布主题的源码，说明一下，如果想要发送发布主题，应该是需要登录信息等内容。
至此，在discuzQ论坛中可以显示：
推送问题，功能需求完成
总结
主要是对image/png;base64图片上传指定服务器目录，并生成相应src的url，以替换原先内容，以RestTemplate的方式推送信息，discuzQ可显示正常的图文内容，以上。
