在Part和String上执行循环复制JSP/JEE

<%@ page import="java.io.*" %>
<%@ page import="javax.servlet.http.*" %>
<%@ page import="javax.servlet.*" %>

<%
    String savePath = "指定保存文件的路径";
    File fileSaveDir = new File(savePath);
    if (!fileSaveDir.exists()) {
        fileSaveDir.mkdir();
    }

    for (Part part : request.getParts()) {
        String fileName = extractFileName(part);
        part.write(savePath + File.separator + fileName);
    }

    out.println("文件上传成功！");
%>

<%
    // 从Part中提取文件名
    private String extractFileName(Part part) {
        String contentDisp = part.getHeader("content-disposition");
        String[] items = contentDisp.split(";");
        for (String item : items) {
            if (item.trim().startsWith("filename")) {
                return item.substring(item.indexOf("=") + 2, item.length() - 1);
            }
        }
        return "";
    }
%>

<%
    String sourceString = "要复制的源字符串";
    int copyTimes = 5; // 指定复制的次数
    String copiedString = "";

    for (int i = 0; i < copyTimes; i++) {
        copiedString += sourceString;
    }

    out.println("复制后的字符串：" + copiedString);
%>