jQuery没有提供ajax的文件上传，我们可以通过ajaxfileupload实现ajax文件的上传。其实ajaxfileupload文件上传特别的简单。下面就演示一下在SpringMVC中实现ajax的文件上传。
1、后台接收代码
首先在spring的配置文件中添加文件上传配置
|
1
2
3
4
|
<!-- 文件上传 --><bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"><property name="defaultEncoding" value="UTF-8"/> </bean> |
再写文件接收的代码
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
package com.chinaunicom.jlmssp.controller;import java.io.File;import java.io.IOException;import java.util.Arrays;import java.util.Date;import java.util.HashMap;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import org.apache.commons.fileupload.servlet.ServletFileUpload;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.multipart.commons.CommonsMultipartFile;import com.chinaunicom.jlmssp.model.DataResponse;import com.chinaunicom.jlmssp.model.JavaToJsMsg;import com.chinaunicom.jlmssp.model.Org_UserInfo;import com.chinaunicom.jlmssp.model.Repaly_Expert_Home_Page;import com.chinaunicom.jlmssp.services.Replay_ExpertManageService;/** * 项目复制管理子系统 * 专家云管理 * @author SunYue * @version 0.1 */@Controller@RequestMapping("/admin/Replay_ExpertManageController.do")public class Replay_ExpertManageController { private static final HashMap<String, String> TypeMap = new HashMap<String, String>(); static { TypeMap.put("image", "gif,jpg,jpeg,png,bmp"); TypeMap.put("flash", "swf,flv"); TypeMap.put("media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb"); TypeMap.put("file", "doc,docx,xls,xlsx,ppt,pptx,htm,html,txt,dwg,pdf"); } @Autowired Replay_ExpertManageService replayExpertManageService; /** * @author sunyue * @date 2017年2月28日 下午12:49:33 * @Description: 图片上传方法 * @return message: -1 没有文件上传 0 上传成功 1 上传失败 2 文件超过上传大小 3 文件格式错误 4 上传文件路径非法 5 上传目录没有写权限 * @return void 返回类型 */ @RequestMapping(params = "op=getImageUpload", method = RequestMethod.POST) public void getImageUpload(@RequestParam("upload") CommonsMultipartFile file,HttpServletRequest request, HttpServletResponse response) { if (!file.isEmpty()) { /*ServletContext servletContext = request.getSession() .getServletContext(); String uploadPath = servletContext.getRealPath("/") + "images\\replay-expert\\"; String upPathString = request.getServletPath(); */ //获取项目工作空间下工程路径的方法，将图片保存到工程路径下 String t=Thread.currentThread().getContextClassLoader().getResource("").getPath(); int num=t.indexOf(".metadata"); String uploadPath=t.substring(1,num).replace('/', '\\')+"jl_mssp_V3_0\\WebContent\\images\\replay-expert\\"; // 文件上传大小 long fileSize = 3 * 1024 * 1024; if (file.getSize() > fileSize) { backInfo(response, false, 2, ""); return; } String OriginalFilename = file.getOriginalFilename(); String fileSuffix = OriginalFilename.substring( OriginalFilename.lastIndexOf(".") + 1).toLowerCase(); if (!Arrays.asList(TypeMap.get("image").split(",")).contains( fileSuffix)) { backInfo(response, false, 3, ""); return; } if (!ServletFileUpload.isMultipartContent(request)) { backInfo(response, false, -1, ""); return; } // 检查上传文件的目录 File uploadDir = new File(uploadPath); if (!uploadDir.isDirectory()) { if (!uploadDir.mkdir()) { backInfo(response, false, 4, ""); return; } } // 是否有上传的权限 if (!uploadDir.canWrite()) { backInfo(response, false, 5, ""); return; } //新文件名 String newname = ""; /*if(null != filePre){ newname += filePre;//对应模块上传的文件名前缀 }*/ newname += "test1111" + "." + fileSuffix; File saveFile = new File(uploadPath, newname); try { file.transferTo(saveFile); backInfo(response, true, 0, newname); } catch (Exception e) { //LOG.error(e.getMessage(), e); backInfo(response, false, 1, ""); return; } } else { backInfo(response, false, -1, ""); return; } } // 返回信息 private void backInfo(HttpServletResponse response, boolean flag, int message, String fileName) { String json = ""; if (flag) { json = "{ \"status\": \"success"; } else { json = "{ \"status\": \"error"; } json += "\",\"fileName\": \"" + fileName + "\",\"message\": \"" + message + "\"}"; try { response.setContentType("text/html;charset=utf-8"); response.getWriter().write(json); } catch (IOException e) { //LOG.error(e.getMessage(), e); } }} |
2、前台接受代码
使用ajaxfileupload时，首先下载ajaxfileupload文件，导入对应的js文件
|
1
|
<script type="text/javascript" src="js/ajaxfileupload.js"></script> |
文件传输字段必须为file类型，如下：
|
1
|
<input type="file" id="file" name="file" onchange="ajaxFileUpload();"/> |
其次，处理上传文件：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
function ajaxFileUpload() { $.ajaxFileUpload({ type: "POST", async: false, data: { "op": 'getImageUpload'}, url:"Replay_ExpertManageController.do", dataType: 'json', secureuri: false, fileElementId: "upload", success: function(data, status) { if (data.status == "success") { //上传成功 alert("上传照片成功"); } switch(data.message){ //解析上传状态 case "0" : //上传成功 break; case "-1" : //上传文件不能为空 break; default: //上传失败 break; } return false; }/* , error : function (jqXHR, textStatus, errorThrown) { //弹出jqXHR对象的信息 alert(jqXHR.responseText); //alert(jqXHR.status); //alert(jqXHR.readyState); //alert(jqXHR.statusText); //弹出其他两个参数的信息 //alert(textStatus); alert(errorThrown); return false; } */ });} |
三、由于网上的ajaxuploadfile文件都是高版本的，这里将改版完全版文件传上，自己使用
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
|
jQuery.extend({ handleError: function( s, xhr, status, e ) { // If a local callback was specified, fire it if ( s.error ) { s.error.call( s.context || s, xhr, status, e ); } // Fire the global callback if ( s.global ) { (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] ); } }, createUploadIframe: function(id, uri) { var frameId = 'jUploadFrame' + id; if(window.ActiveXObject) { if(jQuery.browser.version=="9.0") { io = document.createElement('iframe'); io.id = frameId; io.name = frameId; } else if(jQuery.browser.version=="6.0" || jQuery.browser.version=="7.0" || jQuery.browser.version=="8.0") { var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />'); if(typeof uri== 'boolean'){ io.src = 'javascript:false'; } else if(typeof uri== 'string'){ io.src = uri; } } } else { var io = document.createElement('iframe'); io.id = frameId; io.name = frameId; } io.style.position = 'absolute'; io.style.top = '-1000px'; io.style.left = '-1000px'; document.body.appendChild(io); return io; }, ajaxUpload:function(s,xml){ //if((fromFiles.nodeType&&!((fileList=fromFiles.files)&&fileList[0].name))) var uid = new Date().getTime(),idIO='jUploadFrame'+uid,_this=this; var jIO=$('<iframe name="'+idIO+'" id="'+idIO+'" style="display:none">').appendTo('body'); var jForm=$('<form action="'+s.url+'" target="'+idIO+'" method="post" enctype="multipart/form-data"></form>').appendTo('body'); var oldElement = $('#'+s.fileElementId); var newElement = $(oldElement).clone(); $(oldElement).attr('id', 'jUploadFile'+uid); $(oldElement).before(newElement); $(oldElement).appendTo(jForm); this.remove=function() { if(_this!==null) { jNewFile.before(jOldFile).remove(); jIO.remove();jForm.remove(); _this=null; } } this.onLoad=function(){ var data=$(jIO[0].contentWindow.document.body).text(); try{ if(data!=undefined){ data = eval('(' + data + ')'); try { if (s.success) s.success(data, status); // Fire the global callback if(s.global) jQuery.event.trigger("ajaxSuccess", [xml, s]); if (s.complete) s.complete(data, status); xml = null; } catch(e) { status = "error"; jQuery.handleError(s, xml, status, e); } // The request was completed if(s.global) jQuery.event.trigger( "ajaxComplete", [xml, s] ); // Handle the global AJAX counter if (s.global && ! --jQuery.active ) jQuery.event.trigger("ajaxStop"); // Process result } }catch(ex){ alert(ex.message); }; } this.start=function(){jForm.submit();jIO.load(_this.onLoad);}; return this; }, createUploadForm: function(id, url,fileElementId, data) { //create form var formId = 'jUploadForm' + id; var fileId = 'jUploadFile' + id; var form = jQuery('<form action="'+url+'" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>'); if(data) { for(var i in data) { jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form); } } var oldElement = jQuery('#' + fileElementId); var newElement = jQuery(oldElement).clone(); jQuery(oldElement).attr('id', fileId); jQuery(oldElement).before(newElement); jQuery(oldElement).appendTo(form); //set attributes jQuery(form).css('position', 'absolute'); jQuery(form).css('top', '-1200px'); jQuery(form).css('left', '-1200px'); jQuery(form).appendTo('body'); return form; }, ajaxFileUpload: function(s) { // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout // Create the request object var xml = {}; s = jQuery.extend({}, jQuery.ajaxSettings, s); if(window.ActiveXObject){ var upload = new jQuery.ajaxUpload(s,xml); upload.start(); }else{ var id = new Date().getTime(); var form = jQuery.createUploadForm(id,s.url, s.fileElementId, (typeof(s.data)=='undefined'?false:s.data)); var io = jQuery.createUploadIframe(id, s.secureuri); var frameId = 'jUploadFrame' + id; var formId = 'jUploadForm' + id; // Watch for a new set of requests if ( s.global && ! jQuery.active++ ) { jQuery.event.trigger( "ajaxStart" ); } var requestDone = false; if ( s.global ) jQuery.event.trigger("ajaxSend", [xml, s]); // Wait for a response to come back var uploadCallback = function(isTimeout) { var io = document.getElementById(frameId); try { if(io.contentWindow) { xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null; xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document; }else if(io.contentDocument) { xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null; xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document; } }catch(e) { jQuery.handleError(s, xml, null, e); } if ( xml || isTimeout == "timeout") { requestDone = true; var status; try { status = isTimeout != "timeout" ? "success" : "error"; // Make sure that the request was successful or notmodified if ( status != "error" ) { // process the data (runs the xml through httpData regardless of callback) var data = jQuery.uploadHttpData(xml, s.dataType); // If a local callback was specified, fire it and pass it the data if (s.success) s.success(data, status); // Fire the global callback if(s.global) jQuery.event.trigger("ajaxSuccess", [xml, s]); if (s.complete) s.complete(data, status); } else jQuery.handleError(s, xml, status); } catch(e) { status = "error"; jQuery.handleError(s, xml, status, e); } // The request was completed if(s.global) jQuery.event.trigger( "ajaxComplete", [xml, s] ); // Handle the global AJAX counter if (s.global && ! --jQuery.active ) jQuery.event.trigger("ajaxStop"); // Process result jQuery(io).unbind(); setTimeout(function() { try { jQuery(io).remove(); jQuery(form).remove(); } catch(e) { jQuery.handleError(s, xml, null, e); } }, 100); xml = null; } }; // Timeout checker if (s.timeout>0) { setTimeout(function(){ // Check to see if the request is still happening if( !requestDone ) uploadCallback("timeout"); }, s.timeout); } try { var form = jQuery('#' + formId); jQuery(form).attr('action', s.url); jQuery(form).attr('method', 'POST'); jQuery(form).attr('target', frameId); if(form.encoding) { jQuery(form).attr('encoding', 'multipart/form-data'); } else { jQuery(form).attr('enctype', 'multipart/form-data'); } jQuery(form).submit(); } catch(e) { jQuery.handleError(s, xml, null, e); } jQuery('#'+ frameId).load(uploadCallback); return {abort: function () {}}; } }, uploadHttpData: function( r, type ) { var data = !type; data = type == "xml" || data ? r.responseXML : r.responseText; // If the type is "script", eval it in global context if ( type == "script" ) jQuery.globalEval( data ); // Get the JavaScript object, if JSON is used. if ( type == "json" ){ eval( "data = " + $(data).html() ); } // evaluate scripts within html if ( type == "html" ) jQuery("<div>").html(data).evalScripts(); return data; }}); |
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服务器之家。
原文链接：http://www.cnblogs.com/symbol8888/p/6733548.html
