springmvc+kindeditor文件上传实例详解
程序员文章站
2024-02-23 17:09:22
本文实例为大家分享了springmvc+kindeditor文件上传的具体代码，供大家参考，具体内容如下
下载
压缩包里面的jar放到tomcat的lib文件夹下，ki...
本文实例为大家分享了springmvc+kindeditor文件上传的具体代码，供大家参考，具体内容如下
下载
压缩包里面的jar放到tomcat的lib文件夹下，kindeditor文件放工程里，不用的可以删掉
jsp页面
<%@ page language="java" contenttype="text/html; charset=utf-8"
pageencoding="utf-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/html4/loose.dtd">
<html>
<link rel="stylesheet"
href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="external nofollow" >
<script src="https://cdn.bootcss.com/jquery/2.1.1/jquery.min.js"></script>
<script
src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="./kindeditor/kindeditor-all-min.js"></script>
<script src="./kindeditor/lang/zh-cn.js"></script>
<script>
kindeditor
.ready(function(k) {
window.editor = k
.create(
'#editor_id',
{
uploadjson : 'kindeditor/uploadfile',
filemanagerjson : 'kindeditor/filemanager',
allowimageupload : true, //多图上传
allowfilemanager : true, //浏览图片空间
filtermode : false, //html特殊代码过滤
afterblur : function() {
this.sync();
}, //编辑器失去焦点(blur)时执行的回调函数（将编辑器的html数据同步到textarea）
afterupload : function(url, data, name) { //上传文件后执行的回调函数，必须为3个参数
if (name == "image"
|| name == "multiimage") { //单个和批量上传图片时
if (k("#pic").length > 0) { //文本框存在
document
.getelementbyid('piclist').options[document
.getelementbyid('piclist').length] = new option(
url, url); //下拉列表框增加一条
document
.getelementbyid('piclist').selectedindex += 1; //选定刚新增的这一条
k("#indexpicimg")
.html(
"<img src='" + url + "' width='150' height='95' />"); //重置图片展示区div的html内容
k("#pic").val(url); //重置文本框值
}
}
}
});
});
</script>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>insert title here</title>
</head>
<body>
<form class="form-horizontal" role="form" action="articleadd" method="post" >
<div class="form-group">
<label for="firstname" class="col-sm-2 control-label">标题</label>
<div class="col-sm-5">
<input type="text" class="form-control" id="title" name="title"
placeholder="请输入标题">
</div>
</div>
<div class="form-group">
<label for="lastname" class="col-sm-2 control-label">类别</label>
<div class="col-sm-3">
<select class="form-control" name="categoryid">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
</div>
</div>
<div class="form-group">
<label for="lastname" class="col-sm-2 control-label">内容</label>
<div class=" col-sm-5">
<textarea id="editor_id" name="details"
class="form-control" >
<strong>html内容</strong>
</textarea>
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default">保存草稿</button>
</div>
</div>
</form>
</body>
</html>
kindaction.java
package com.leo.ows.action;
import java.io.bufferedoutputstream;
import java.io.file;
import java.io.fileoutputstream;
import java.io.printwriter;
import java.text.simpledateformat;
import java.util.arraylist;
import java.util.arrays;
import java.util.collections;
import java.util.comparator;
import java.util.hashmap;
import java.util.hashtable;
import java.util.iterator;
import java.util.list;
import java.util.map;
import java.util.uuid;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import org.apache.commons.fileupload.servlet.servletfileupload;
import org.springframework.stereotype.controller;
import org.springframework.util.filecopyutils;
import org.springframework.web.bind.annotation.requestmapping;
import org.springframework.web.bind.annotation.requestmethod;
import org.springframework.web.multipart.multipartfile;
import org.springframework.web.multipart.multiparthttpservletrequest;
import com.alibaba.fastjson.jsonobject;
@controller
public class kindaction {
@requestmapping(value ="/kindeditor/uploadfile", method = requestmethod.post)
public void uploadfile(httpservletrequest request, httpservletresponse response) throws exception {
printwriter writer = response.getwriter();
// 文件保存目录路径
string savepath = request.getsession().getservletcontext().getrealpath("/") + "upload/image" + file.separatorchar
+ file.separatorchar;
string saveurl = request.getcontextpath()+ file.separatorchar + "upload/image" + file.separatorchar
+ file.separatorchar;
// 定义允许上传的文件扩展名
hashmap<string, string> extmap = new hashmap<string, string>();
extmap.put("image", "gif,jpg,jpeg,png,bmp");
// 最大文件大小
long maxsize = 1000000;
response.setcontenttype("text/html; charset=utf-8");
if (!servletfileupload.ismultipartcontent(request)) {
writer.println(geterror("请选择文件。"));
return;
}
file uploaddir = new file(savepath);
// 判断文件夹是否存在,如果不存在则创建文件夹
if (!uploaddir.exists()) {
uploaddir.mkdirs();
}
// 检查目录写权限
if (!uploaddir.canwrite()) {
writer.println(geterror("上传目录没有写权限。"));
return;
}
string dirname = request.getparameter("dir");
if (dirname == null) {
dirname = "image";
}
if (!extmap.containskey(dirname)) {
writer.println(geterror("目录名不正确。"));
return;
}
multiparthttpservletrequest mrequest = (multiparthttpservletrequest) request;
map<string, multipartfile> filemap = mrequest.getfilemap();
string filename = null;
for (iterator<map.entry<string, multipartfile>> it = filemap.entryset().iterator(); it.hasnext();) {
map.entry<string, multipartfile> entry = it.next();
multipartfile mfile = entry.getvalue();
filename = mfile.getoriginalfilename();
// 检查文件大小
if (mfile.getsize() > maxsize) {
writer.println(geterror("上传文件大小超过限制。"));
return;
}
string fileext = filename.substring(filename.lastindexof(".")+1);
if (!arrays.<string> aslist(extmap.get(dirname).split(",")).contains(fileext)) {
writer.println(geterror("上传文件扩展名是不允许的扩展名。\n只允许" + extmap.get(dirname) + "格式。"));
return;
}
uuid uuid = uuid.randomuuid();
string path = savepath + uuid.tostring() +"."+ fileext;
saveurl = saveurl + uuid.tostring() +"."+ fileext;
bufferedoutputstream outputstream = new bufferedoutputstream(new fileoutputstream(path));
filecopyutils.copy(mfile.getinputstream(), outputstream);
jsonobject obj = new jsonobject();
obj.put("error", 0);
obj.put("url", saveurl);
writer.println(obj.tostring());
}
}
private string geterror(string message) {
jsonobject obj = new jsonobject();
obj.put("error", 1);
obj.put("message", message);
return obj.tostring();
}
@requestmapping(value = "/kindeditor/filemanager", method = requestmethod.get)
public void filemanager(httpservletrequest request, httpservletresponse response) throws exception {
//根目录路径，可以指定绝对路径，比如 /var/www/attached/
string rootpath = request.getsession().getservletcontext().getrealpath("/")+ "upload/";
//根目录url，可以指定绝对路径，比如 http://www.yoursite.com/attached/
string rooturl = request.getcontextpath() + "/upload/";
//图片扩展名
string[] filetypes = new string[]{"gif", "jpg", "jpeg", "png", "bmp"};
system.out.println(rootpath);
string dirname = request.getparameter("dir");
if (dirname != null) {
if(!arrays.<string>aslist(new string[]{"image", "flash", "media", "file"}).contains(dirname)){
system.out.println("invalid directory name.");
return;
}
rootpath += dirname + "/";
rooturl += dirname + "/";
file savedirfile = new file(rootpath);
if (!savedirfile.exists()) {
savedirfile.mkdirs();
}
}
//根据path参数，设置各路径和url
string path = request.getparameter("path") != null ? request.getparameter("path") : "";
string currentpath = rootpath + path;
string currenturl = rooturl + path;
string currentdirpath = path;
string moveupdirpath = "";
if (!"".equals(path)) {
string str = currentdirpath.substring(0, currentdirpath.length() - 1);
moveupdirpath = str.lastindexof("/") >= 0 ? str.substring(0, str.lastindexof("/") + 1) : "";
}
//排序形式，name or size or type
string order = request.getparameter("order") != null ? request.getparameter("order").tolowercase() : "name";
//不允许使用..移动到上一级目录
if (path.indexof("..") >= 0) {
system.out.println("access is not allowed.");
return;
}
//最后一个字符不是/
if (!"".equals(path) && !path.endswith("/")) {
system.out.println("parameter is not valid.");
return;
}
//目录不存在或不是目录
file currentpathfile = new file(currentpath);
if(!currentpathfile.isdirectory()){
system.out.println("directory does not exist.");
return;
}
//遍历目录取的文件信息
list<hashtable> filelist = new arraylist<hashtable>();
if(currentpathfile.listfiles() != null) {
for (file file : currentpathfile.listfiles()) {
hashtable<string, object> hash = new hashtable<string, object>();
string filename = file.getname();
if(file.isdirectory()) {
hash.put("is_dir", true);
hash.put("has_file", (file.listfiles() != null));
hash.put("filesize", 0l);
hash.put("is_photo", false);
hash.put("filetype", "");
} else if(file.isfile()){
string fileext = filename.substring(filename.lastindexof(".") + 1).tolowercase();
hash.put("is_dir", false);
hash.put("has_file", false);
hash.put("filesize", file.length());
hash.put("is_photo", arrays.<string>aslist(filetypes).contains(fileext));
hash.put("filetype", fileext);
}
hash.put("filename", filename);
hash.put("datetime", new simpledateformat("yyyy-mm-dd hh:mm:ss").format(file.lastmodified()));
filelist.add(hash);
}
}
if ("size".equals(order)) {
collections.sort(filelist, new sizecomparator());
} else if ("type".equals(order)) {
collections.sort(filelist, new typecomparator());
} else {
collections.sort(filelist, new namecomparator());
}
jsonobject result = new jsonobject();
result.put("moveup_dir_path", moveupdirpath);
result.put("current_dir_path", currentdirpath);
result.put("current_url", currenturl);
result.put("total_count", filelist.size());
result.put("file_list", filelist);
response.setcontenttype("application/json; charset=utf-8");
system.out.println(result.tojsonstring());
printwriter writer=response.getwriter();
writer.println(result);
}
public class namecomparator implements comparator {
public int compare(object a, object b) {
hashtable hasha = (hashtable)a;
hashtable hashb = (hashtable)b;
if (((boolean)hasha.get("is_dir")) && !((boolean)hashb.get("is_dir"))) {
return -1;
} else if (!((boolean)hasha.get("is_dir")) && ((boolean)hashb.get("is_dir"))) {
return 1;
} else {
return ((string)hasha.get("filename")).compareto((string)hashb.get("filename"));
}
}
}
public class sizecomparator implements comparator {
public int compare(object a, object b) {
hashtable hasha = (hashtable)a;
hashtable hashb = (hashtable)b;
if (((boolean)hasha.get("is_dir")) && !((boolean)hashb.get("is_dir"))) {
return -1;
} else if (!((boolean)hasha.get("is_dir")) && ((boolean)hashb.get("is_dir"))) {
return 1;
} else {
if (((long)hasha.get("filesize")) > ((long)hashb.get("filesize"))) {
return 1;
} else if (((long)hasha.get("filesize")) < ((long)hashb.get("filesize"))) {
return -1;
} else {
return 0;
}
}
}
}
public class typecomparator implements comparator {
public int compare(object a, object b) {
hashtable hasha = (hashtable)a;
hashtable hashb = (hashtable)b;
if (((boolean)hasha.get("is_dir")) && !((boolean)hashb.get("is_dir"))) {
return -1;
} else if (!((boolean)hasha.get("is_dir")) && ((boolean)hashb.get("is_dir"))) {
return 1;
} else {
return ((string)hasha.get("filetype")).compareto((string)hashb.get("filetype"));
}
}
}
}
效果图
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
上一篇： java计算自幂数和水仙花数
下一篇： Java中断线程的方法