html中file上传后如何保存到一个位置
2016-06-02 · 百度知道合伙人官方认证企业
育知同创教育
html中file上传后保存到一个位置需要预先在服务端建一个保存目录。
举例如下：
1、创建上传form：
<form action="http://www.cs.tut.fi/cgi-bin/run/~jkorpela/echo.cgi"
enctype="multipart/form-data" method="post">
<p>
Type some text (if you like):<br>
<input type="text" name="textline" size="30">
</p>
<p>
Please specify a file, or a set of files:<br>
<input type="file" name="datafile" size="40">
</p>
<div>
<input type="submit" value="Send">
</div>
</form>
2、提交到后台服务端处理：
public void commonImgUpload(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/xml; charset=utf-8");
response.setCharacterEncoding("UTF-8");
PrintWriter pw = response.getWriter();
String xml = "";
String imgName = getParam(request, "imgName");
String imgValue = getParam(request, "imgValue");
String type = getParam(request, "type");
String encryptCode = getParam(request, "encryptCode");
log.debug("图片上传，图片名称：" + imgName + "，上传类型：" + type);
if (MD5Checker.check(encryptCode, imgName)) {
try {
String path = this.getClass().getClassLoader().getResource("").getPath();
log.info("当前路径：" + path);
path = path.replace("WEB-INF/classes/", "pictures/" + type + "/");
log.info("替换后路径：" + path);
File temp = new File(path);
if (!temp.isDirectory()) {
log.info("创建目录path: " + path);
temp.mkdirs();
}
path += imgName;
log.info("图片全path: " + path);
FileUtil.saveFile(path, (new BASE64Decoder()).decodeBuffer(imgValue), "UTF-8");
xml = "success";
log.info("上传图片：" + path + "成功！");
} catch (Exception e) {
log.info("上传图片失败，" + e.getMessage());
xml = "fail";
}
} else {
xml = "<data><resultCode>" + "09" + "</resultCode>" + "<resultMsg>" + "摘要验证错误" + "</resultMsg>" + "</data>";
}
pw.print(xml);
if (null != pw) {
pw.close();
}
}
3、保存路径：
WEB-INF/classes/pictures/111.jpg
