富文本编辑器生成的含有图片的内容转换成word文档java后端下载_java将富文本导出包含图片,java富文本转word资源-CSDN下载

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在IT行业中，富文本编辑器如wangEditor广泛用于创建和编辑包含文字、图片等多种元素的内容。当用户在这些编辑器中完成编辑后，有时需要将这些内容导出为更传统和兼容的格式，例如Microsoft Word文档。这个过程涉及到数据的处理、格式转换以及文件的下载功能，通常由后端服务器来完成。下面我们将详细讨论如何在Java后端实现从wangEditor生成的富文本内容（包括base64编码的图片和网络图片）转换为Word文档，并提供下载功能。我们需要了解wangEditor生成的内容结构。wangEditor会将用户编辑的内容保存为JSON格式，其中包含了文字、段落、标题、图片等元素。图片可以是base64编码的字符串或者网络链接。为了转换为Word，我们需要解析这个JSON，提取所有必要信息。在Java中，我们可以使用Apache POI库来操作Word文档。Apache POI是一个强大的API，支持读写Microsoft Office格式的文件，包括Word（.doc和.docx）。对于base64编码的图片，我们需要先解码成字节数组，然后将其作为图片流插入到Word文档中。对于网络图片，我们需要先下载到服务器，然后再处理。以下是一些关键步骤： 1. **解析富文本内容**：使用JSON库（如Jackson或Gson）解析wangEditor返回的JSON字符串，获取文本和图片信息。 2. **处理base64图片**：对每个base64格式的图片，使用Java的`Base64`类进行解码，并将结果保存到临时文件或内存中。 3. **处理网络图片**：使用HTTP客户端库（如Apache HttpClient或OkHttp）下载网络图片到服务器，同样保存到临时文件。 4. **创建Word文档**：使用Apache POI创建一个新的Word文档对象，添加标题、段落等文本元素。 5. **插入图片**：将base64或网络图片文件作为图片流插入到Word文档的相应位置。 6. **设置样式和格式**：根据需要调整文本样式，如字体、字号、颜色，以及图片大小和位置。 7. **生成下载响应**：完成内容插入后，将Word文档输出为字节流，设置HTTP响应头，触发浏览器下载。在提供的`ExportWord.java`文件中，我们可以预期它包含了上述部分的实现代码。具体来说，它可能有以下几个方法： - `parseJsonContent(String json)`：解析JSON内容。 - `decodeBase64Images(Map<String, String> images)`：解码base64图片。 - `downloadNetworkImages(List<String> urls)`：下载网络图片。 - `createWordDocument(Content content)`：使用Apache POI创建Word文档。 - `insertImages(WordDocument doc, List<ImageInfo> images)`：插入图片到Word文档。 - `sendDownloadResponse(HttpServletResponse response, WordDocument doc)`：发送HTTP响应触发下载。通过这样的处理，用户在前端编辑的内容就可以顺利地被转换为Word文档并下载到本地，保持原有的格式和图片。这个过程展示了Java后端在处理数据转换和文件下载方面的强大能力，以及第三方库如Apache POI在处理Office文档格式上的灵活性。

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ExportWord.zip （1个子文件）

ExportWord.java 71KB

import org.apache.poi.poifs.filesystem.DirectoryEntry; import org.apache.poi.poifs.filesystem.DocumentEntry; import org.apache.poi.poifs.filesystem.POIFSFileSystem; import org.apache.poi.util.IOUtils; import sun.misc.BASE64Decoder; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.BufferedOutputStream; import java.io.ByteArrayInputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; import java.util.ArrayList; import java.util.List; import java.util.UUID; import java.util.regex.Matcher; import java.util.regex.Pattern; public class ExportWord { public static void main(String[] args) throws Exception { try { // 富文本内容 String content = "<p style='text-align: center;'><strong>测试</strong> </p><h1 style='text-align: center;'><strong>我的测试文档</strong></h1><p style='text-align: center;'><img 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