【记录】java 写入内容到文件 自定义文件类型

import org.apache.commons.lang3.StringUtils;
import org.springframework.util.ObjectUtils;

public static boolean writeData2File(String exportPath,String content, String fileName) {
        boolean flag = false;
        BufferedWriter out = null;
        try {
            if (!ObjectUtils.isEmpty(content) && StringUtils.isNotEmpty(fileName)) {
                fileName = fileName + ".java";
                File pathFile = new File(exportPath);
                if (!pathFile.exists()) {
                    pathFile.mkdirs();
                }
                String relFilePath = exportPath + File.separator + fileName;
                File file = new File(relFilePath);
                if (!file.exists()) {
                    file.createNewFile();
                }
                out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), "utf-8"));
                    out.write(content);
                    out.newLine();
                flag = true;
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (out != null) {
                try {
                    out.flush();
                    out.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return flag;
        }
    }