【Easypoi & Apache poi】 Java后端 Word导入与导出

引入依赖

    cn.afterturn
    easypoi-spring-boot-starter




    org.apache.poi
    poi-scratchpad
    4.1.1

工具类封装

public class WordDocumentUtil {

    /**
     * 解析文档文件
     *
     * @param file 文档文件
     * @return 文档内容
     */
    public static String parseWord(MultipartFile file) {
        String wordTxt = "";
        InputStream stream = null;
        try {
            if (file.getOriginalFilename().endsWith(".doc")) {
                stream = file.getInputStream();
                // Apache Poi
                WordExtractor ex = new WordExtractor(stream);
                wordTxt = ex.getText();
            } else if (file.getOriginalFilename().endsWith(".docx")) {
                stream = file.getInputStream();
                // EasyPoi
                XWPFDocument document = new XWPFDocument(stream);
                XWPFWordExtractor ex = new XWPFWordExtractor(document);
                wordTxt = ex.getText();
            }
        } catch (Exception e) {
            // 此处建议抛出异常 "文档解析有误"
            e.printStackTrace();
        } finally {
            if (stream != null) {
                try {
                    stream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return wordTxt;
    }

    /**
     * 判断文档类型进行不同的分割方式
     * ".doc"后缀需要以"\r\n"切割 而".docx"后缀需要以"\n"切割
     *
     * @param file 文件名：以file.getOriginalFilename()传入
     * @param wordTxt 文件内容
     * @return 内容数组
     */
    public static String[] judgeType(String file, String wordTxt) {
        boolean suffixFlag = file.endsWith(".doc");

        return suffixFlag ? Arrays.stream(wordTxt.split("\r\n")).toArray(String[]::new)
                : Arrays.stream(wordTxt.split("\n")).toArray(String[]::new);
    }

    /**
     * 导出resources下的word模板表
     *
     * @param fileName 文件名
     * @param response {@link HttpServletResponse}
     */
    public void exportTemplate(String fileName, HttpServletResponse response) {
        InputStream inputStream = null;
        try {
            String path = "/word/" + fileName;
            inputStream = this.getClass().getResourceAsStream(path);

            // 后缀名称
            String suffix = fileName.substring(fileName.lastIndexOf("."));
            // 使用UUID重新生成文件名 防止文件名称重复造成文件覆盖
            String newFileName = UUID.randomUUID().toString().replaceAll("-","") + suffix;

            byte[] bytes = new byte[1024 * 1024];
            // 输入流读取文件
            if (inputStream != null) {
                inputStream.read(bytes);
            }

            response.setCharacterEncoding("UTF-8");
            response.setContentType("application/msword");
            response.setHeader("Access-Control-Expose-Headers","Content-disposition");
            response.setHeader("Content-Disposition","attachment;filename=" + newFileName);
            response.getOutputStream().write(bytes);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

乱码问题

        如果这里造成了读取resources下的文件返回前端乱码问题：除了HttpServletResponse响应中设置字体问题，还有可能是因为在编译期文件就已经乱码了，所以需要在pom.xml中增加以下配置。

    
        
            org.apache.maven.plugins
            maven-resources-plugin
            2.6
            
                UTF-8
                
                    doc