上传使用jar：
<dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version></dependency> 超链接传bookI
<a href="/jsp/manageuser/imgupload.jsp?bookId=${li.id}">上传封面</a>
页面取出bookId
String bookId = request.getParameter("bookId");
页面：
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8" %><% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path; String bookId = request.getParameter("bookId");%>
<!DOCTYPE html>
<html lang="zh-CN"><head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>test</title> <!-- Bootstrap --> <script src="${pageContext.request.contextPath}/js/jquery.min.js"></script> <script src="/js/ajaxfileupload.js"></script></head>
<body><script type="text/javascript"> function up() { $.ajaxFileUpload({ type: "POST", url: ‘/manage/sendUp.action?bookId=<%=bookId%>‘, secureuri: false, fileElementId: ‘fileImg‘,//file标签的id dataType: ‘text‘,//返回数据的类型 success: function (data, status) { alert("成功"); window.location.href = "<%=basePath%>/manage/showBook.action"; //window.location.href = "<%=basePath%>/manage/toUpdateBook.action"; }, error: function () { alert("异常"); } }); }</script><input type="file" id="fileImg" name="fileImg"><input type="button" value="上传" onclick="up()"><input type="hidden" id="bookId" name="bookId" value="${id}"></body></html>controller：
//头像上传@RequestMapping(value = "/sendUp", method = RequestMethod.POST)@ResponseBodypublic String sendUp(@RequestParam("bookId") int bookId, @RequestParam MultipartFile[] fileImg, HttpServletRequest request, HttpServletResponse response) throws IOException { Map<String, Object> map = new HashMap<>(); /* map.put("code", 1); System.out.print("收到用户[" + bookId + "]的文件上传请求");*/ //文件实际上传路径 String realPath = request.getSession().getServletContext().getRealPath("/"); response.setContentType("text/plain;charset=UTF-8"); //设置响应给前台的PrintWriter对象 /* PrintWriter out = response.getWriter();*/ String fileName = null; for (MultipartFile myfile : fileImg) { if (myfile.isEmpty()) { /*out.print(map.toString()); out.flush();*/ } else { try { fileName = myfile.getOriginalFilename(); String trueFileName = String.valueOf(System.currentTimeMillis() + fileName);
String wlPath = "D:\\java\\xiangmu\\first_project\\web\\resources\\img\\" + trueFileName; String xdPath = "../resources/img/" + trueFileName; String tempPath = realPath + "resources\\img\\" + trueFileName;
map.put("bookId", bookId); map.put("xdPath", xdPath); isService.updateImg(map);
FileUtils.copyInputStreamToFile(myfile.getInputStream(), new File(wlPath)); FileUtils.copyInputStreamToFile(myfile.getInputStream(), new File(tempPath)); /* map.put("code", 0);*/ /* out.print(map.toString()); out.flush(); int count = 1; map.put("count", count);*/
} catch (IOException e) { /* e.printStackTrace(); out.print(map.toString()); out.flush();*/
} } } return "1";}img文件夹位置
spring-mvc。xml：
设置上传文件大小<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="maxUploadSize" value="10485760"/></bean>
自己用来做笔记的
时间： 2024-12-11 01:28:06