ajaxfileupload的使用实例

Ajax 前端之家
前端之家收集整理的这篇文章主要介绍了ajaxfileupload的使用实例，前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。

http://blog.csdn.net/sidongxue2/article/details/43952191

今天简单总结一下ajaxfileupload的用法，具体实例如下:

1.上传一个文件并携带多个参数.
2.上传多个文件并携带多个参数.
扩展:可以通过jquery扩展为添加文件选择框,去除文件选择框,而不是写死只能上传几个文件.
3.上传一个文件并携带多个参数,同时上传完成之后,及时显示.
4.上传一个文件并携带多个参数,上传之前实现预览.

5.上传一个文件,并携带多个参数.

通过css将界面完善的更加人性化:点击图片选择文件.

项目通过maven构建,前后台通过springmvc交互数据,spring采用注解方式.

a.闲话少说先看web.xml文件,如下:

[html] view plain copy
  1. <?xmlversion="1.0"encoding="UTF-8"?>
  2. <web-appversion="2.5"
  3. xmlns="http://java.sun.com/xml/ns/javaee"
  4. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  5. xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
  6. http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  7. display-name>message-web</>
  9. <!--配置log4j配置文件和监听器-->
  10. context-paramparam-name>log4jConfigLocationparam-value>classpath:log4j.propertieslistenerlistener-class>org.springframework.web.util.Log4jConfigListener
  11. <!--配置springmvc主控servlet-->
  12. servletservlet-name>springmvcservlet-class>org.springframework.web.servlet.DispatcherServletinit-param>contextConfigLocation>classpath:springmvc.xmlservlet-mappingurl-pattern>*.mvc<!--添加字符集过滤器-->
  13. filterfilter-name>encodingFilterfilter-class>org.springframework.web.filter.CharacterEncodingFilter>encoding>UTF-8filter-mapping>/*web-app>
b.接着看spring配置文件和log4j配置文件,

    beansxmlns="http://www.springframework.org/schema/beans"
  1. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p"
  2. xmlns:context="http://www.springframework.org/schema/context"
  3. xsi:schemaLocation="http://www.springframework.org/schema/beans
  4. http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
  5. http://www.springframework.org/schema/context
  6. http://www.springframework.org/schema/context/spring-context-4.0.xsd"<!--配置controller扫描-->
  7. context:component-scanbase-package="com.ilucky.ajaxfileupload"/>
  8. <!--设置上传文件的最大尺寸为100MB-->
  9. beanid="multipartResolver"class="org.springframework.web.multipart.commons.CommonsMultipartResolver"propertyname="maxUploadSize"value>102400000propertybeanbeans>
    #Loggers
  1. log4j.rootLogger=debug,console,file
  2. #console
  3. log4j.appender.console=org.apache.log4j.ConsoleAppender
  4. log4j.appender.console.Threshold=DEBUG
  5. log4j.appender.console.layout=org.apache.log4j.PatternLayout
  6. log4j.appender.console.layout.ConversionPattern=[%d]-%p-%l-%m%n
  7. #file
  8. log4j.appender.file=org.apache.log4j.RollingFileAppender
  9. log4j.appender.file.Append=true
  10. log4j.appender.file.Threshold=DEBUG
  11. log4j.appender.file.ImmediateFlush=true
  12. log4j.appender.file.File=../webapps/ajaxfileupload.log
  13. log4j.appender.file.MaxFileSize=2500KB
  14. log4j.appender.file.MaxBackupIndex=20
  15. log4j.appender.file.layout=org.apache.log4j.PatternLayout
  16. log4j.appender.file.layout.ConversionPattern=[%d]-%p-%l-%m%n
c.然后看控制类.

[java]
@H_403_604@ packagecom.ilucky.ajaxfileupload;
  • importjava.io.File;
  • importjava.io.PrintWriter;
  • importjava.util.HashMap;
  • importjava.util.Map;
  • importjavax.servlet.http.HttpServletRequest;
  • importjavax.servlet.http.HttpServletResponse;
  • importorg.apache.log4j.Logger;
  • importorg.springframework.context.annotation.Scope;
  • importorg.springframework.stereotype.Controller;
  • importorg.springframework.web.bind.annotation.RequestMapping;
  • importorg.springframework.web.bind.annotation.RequestParam;
  • importorg.springframework.web.multipart.MultipartFile;
  • importcom.alibaba.fastjson.JSON;
  • /**
  • *注意:
  • *1.如果从前台传到后台的数据出现中文乱码,在web.xml文件中配置字符集过滤器.
  • *2.如果从后台传到前台的数据出现中文乱码,为response设置编码方式.
  • *@authorIluckySi
  • *@since20150213
  • */
  • @Controller("uploadFileController")
  • @Scope("prototype")
  • @RequestMapping("/uploadFileController")
  • publicclassUploadFileController{
  • privatestaticLoggerlogger=Logger.getLogger(UploadFileController.class);
  • @RequestMapping("/ajaxfileupload")
  • voidajaxfileupload(HttpServletRequestrequest,HttpServletResponseresponse,
  • @RequestParam(value="username",required=true)Stringusername,
  • @RequestParam(value="password",153); font-weight:bold; background-color:inherit">true)Stringpassword,100); background-color:inherit">@RequestParam(value="photo",153); font-weight:bold; background-color:inherit">true)MultipartFilephoto){
  • logger.info("后台收到参数:username="+username+",password="+password+
  • ",photo="+photo.getOriginalFilename());
  • response.setCharacterEncoding("utf-8");
  • PrintWriterpw=null;
  • Map<String,String>result=newHashMap<String,String>();
  • StringimagePath=request.getSession().getServletContext().getRealPath("/");
  • StringimageName="image/"+photo.getOriginalFilename().replace("","");
  • try{
  • *模拟位置1:前台error方法.
  • *模拟代码:intj=2/0;
  • */
  • pw=response.getWriter();
  • /**
  • *模拟位置2:前台success方法.
  • *模拟代码:intj=2/0;
  • if(photo.getSize()>0){
  • photo.transferTo(newFile(imagePath+imageName));
  • logger.info("存储图片成功:"+photo.getOriginalFilename());
  • }
  • result.put("result","success");
  • result.put("message","存储图片成功！");
  • }catch(Exceptione){
  • logger.error("存储图片失败:"+e);
  • "failure");
  • "存储图片失败！");
  • finally{
  • pw.print(JSON.toJSONString(result));
  • }
  • @RequestMapping("/ajaxfileupload2")
  • voidajaxfileupload2(HttpServletRequestrequest,153); font-weight:bold; background-color:inherit">true)MultipartFile[]photo){
  • +photo.length);
  • try{
  • pw=response.getWriter();
  • for(inti=0;i<photo.length;i++){
  • MultipartFilep=photo[i];
  • if(p.getSize()>0){
  • StringimageName="image/"+p.getOriginalFilename().replace("","");
  • p.transferTo( logger.info("存储图片成功:"+p.getOriginalFilename());
  • result.put("result","success");
  • result.put("message","存储图片成功！");
  • }catch(Exceptione){
  • logger.error("存储图片失败:"+e);
  • "failure");
  • "存储图片失败！");
  • finally{
  • pw.print(JSON.toJSONString(result));
  • @RequestMapping("/ajaxfileupload3")
  • voidajaxfileupload3(HttpServletRequestrequest,153); font-weight:bold; background-color:inherit">true)MultipartFilephoto){
  • logger.info("后台收到参数:username="+username+",password="+password+
  • ",photo="+photo.getOriginalFilename());
  • response.setCharacterEncoding("utf-8");
  • PrintWriterpw=null;
  • Map<String,String>();
  • StringimagePath=request.getSession().getServletContext().getRealPath("/");
  • StringimageName="image/"+photo.getOriginalFilename().replace("",108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> photo.transferTo(newFile(imagePath+imageName));
  • logger.info("存储图片成功:"+photo.getOriginalFilename());
  • @RequestMapping("/ajaxfileupload4")
  • voidajaxfileupload4(HttpServletRequestrequest,100); background-color:inherit">@RequestMapping("/ajaxfileupload5")
  • voidajaxfileupload5(HttpServletRequestrequest,248); margin:0px!important; padding:0px 3px 0px 10px!important"> }
    • d.依次看5个实例.

      <!--
    1. 上传一个文件并携带多个参数.
    2. @authorIluckySi
    3. @since20150213
    4. --<%@pagelanguage="java"import="java.util.*"pageEncoding="UTF-8"%<%
    5. Stringpath=request.getContextPath();
    6. StringbasePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
    7. % <!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN"htmlheadbasehref="<%=basePath%>"title>testMetahttp-equiv="pragma"content="no-cache"Metahttp-equiv="cache-control"content="no-cache"Metahttp-equiv="expires"content="0"Metahttp-equiv="keywords"content="keyword1,keyword2,keyword3"Metahttp-equiv="description"content="Thisismypage"Metahttp-equiv="X-UA-Compatible"content="IE=edge"Metaname="viewport"content="width=device-width,initial-scale=1"scriptsrc="${pageContext.request.contextPath}/js/jquery-1.11/jquery.min.js">scriptscriptsrc="${pageContext.request.contextPath}/js/ajaxfileupload/ajaxfileupload.js" varuploadUrl='${pageContext.request.contextPath}/uploadFileController/ajaxfileupload.mvc';
    8. $(function(){
    9. $('#upload').click(function(e){
    10. varusername=$('#username').val();
    11. varpassword=$('#password').val();
    12. varisValidate=false;
    13. if(username==''||password==''){
    14. $('#prompt').html('spanstyle="color:red">用户名和密码是必填项!span>');
    15. }else{
    16. isValidate=true;
    17. if(isValidate){
    18. $.ajaxFileUpload({
    19. url:uploadUrl,
    20. secureuri:false,
    21. //文件选择框的id属性.
    22. fileElementId:'photo',108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> dataType:'json',248); margin:0px!important; padding:0px 3px 0px 10px!important"> data:{
    23. username:username,248); margin:0px!important; padding:0px 3px 0px 10px!important"> password:password
    24. },248); margin:0px!important; padding:0px 3px 0px 10px!important"> //注意:这里的success方法代表的是前台成功接收了后台返回的数据.
    25. success:function(data,status){
    26. if(data.result=='success'){
    27. alert(data.message);
    28. //继续成功的逻辑...
    29. }else{
    30. alert(data.message);
    31. //继续失败的逻辑...
    32. //注意:如果后前台没有成功接收后台返回的数据,则认为上传失败.
    33. //换句话说如果后台的异常没有捕获到,则认为是error.
    34. error:function(s,xml,status,e){
    35. console.info('上传图片失败:未知异常!');
    36. });
    37. });
    38. bodyformid="form"method="post"enctype="multipart/form-data"inputid="username"name="username"type="text"value="请输入姓名"/>
    39. inputid="password"name="password"type="password"value="请输入密码"inputid="photo"name="photo"type="file"imgid="img"src=""inputid="upload"type="button"value="上传"formdivid="prompt"div
        上传多个文件并携带多个参数.
      1. 扩展:可以通过jquery扩展为添加文件选择框,而不是写死只能上传几个文件.
      2. @authorIluckySi
      3. @since20150213
      4. --<%
      5. Stringpath=request.getContextPath();
      6. StringbasePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
      7. % <!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN" varuploadUrl='${pageContext.request.contextPath}/uploadFileController/ajaxfileupload2.mvc';
      8. $(function(){
      9. $('#upload').click(function(e){
      10. varusername=$('#username').val();
      11. varpassword=$('#password').val();
      12. varisValidate=false;
      13. if(username==''||password==''){
      14. $('#prompt').html('>');
      15. isValidate=true;
      16. if(isValidate){
      17. $.ajaxFileUpload({
      18. url:uploadUrl,108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> secureuri:false,248); margin:0px!important; padding:0px 3px 0px 10px!important"> //文件选择框的id属性.
      19. fileElementId:['photo1','photo2','photo3'],248); margin:0px!important; padding:0px 3px 0px 10px!important"> dataType:'json',108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> data:{
      20. username:username,108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> password:password
      21. },108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> //注意:这里的success方法代表的是前台成功接收了后台返回的数据.
      22. success:function(data,status){
      23. if(data.result=='success'){
      24. //继续成功的逻辑...
      25. //继续失败的逻辑...
      26. //注意:如果后前台没有成功接收后台返回的数据,则认为上传失败.
      27. //换句话说如果后台的异常没有捕获到,则认为是error.
      28. error:function(s,e){
      29. console.info('上传图片失败:未知异常!');
      30. inputid="photo1"name="photo"type="file"inputid="photo2"name="photo"type="file"inputid="photo3"name="photo"type="file"
          上传一个文件并携带多个参数,及时显示.
        1. varuploadUrl='${pageContext.request.contextPath}/uploadFileController/ajaxfileupload3.mvc';
        2. //及时预览.
        3. $('#img').attr('src',data.message).
        4. attr('width','100px').
        5. attr('height','100px');
          6. 上传之前实现预览.
          1. 难点:
          2. 对于Chrome,Firefox和IE10使用FileReader来实现.
          3. 对于IE6~9使用滤镜filter:progid:DXImageTransform.Microsoft.AlphaImageLoader来实现.
          4. varuploadUrl='${pageContext.request.contextPath}/uploadFileController/ajaxfileupload4.mvc';
          5. fileElementId:'photo',108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> //重点:图片预览.
          6. functionpreview(file){
          7. varpreview=document.getElementById('preview');
          8. if(file.files&&file.files[0]){
          9. varreader=newFileReader();
          10. reader.onload=function(event){
          11. preview.innerHTML='<imgsrc="'+event.target.result+'"width="100px"height="100px"/>';
          12. };
          13. reader.readAsDataURL(file.files[0]);
          14. //没有用IE6~9进行测试.
          15. preview.innerHTML='divclass="img"style="filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src=\''+file.value+'\'">';
          16. inputid="photo"name="photo"type="file"onchange="preview(this)"divid="preview"
              上传一个文件,并携带多个参数.
            1. p>通过css将界面完善的更加人性化:点击图片选择文件.
            2. @since20150226
            3. styletype="text/css" .fileDiv{
            4. width:100px;
            5. height:40px;
            6. background:url(image/test.png);
            7. overflow:hidden;
            8. position:relative;
            9. .photo{
            10. position:absolute;
            11. top:-100px;
            12. .upFileButton{
            13. width:100px;
            14. height:40px;
            15. opacity:0;
            16. filter:alpha(opacity=0);
            17. cursor:pointer;
            18. style varuploadUrl='${pageContext.request.contextPath}/uploadFileController/ajaxfileupload5.mvc';
            19. divid="fileDiv"class="fileDiv"inputtype="file"id="photo"name="photo"class="photo"onchange="document.getElementById('photoName').innerHTML=this.value"inputtype="button"class="upFileButton"onclick="document.getElementById('photo').click()"divid="photoName">图片文件名称inputid="upload"class="upload"type="button"value="上传"e.最重要的是看ajaxfileupload.js文件,此文件进行了扩展,都是从网上找到的.

              [javascript]
                //JavaScriptDocument
              1. jQuery.extend({
              2. createUploadIframe:function(id,uri){
              3. //createframe
              4. varframeId='jUploadFrame'+id;
              5. variframeHtml='<iframeid="'+frameId+'"name="'+frameId+'"style="position:absolute;top:-9999px;left:-9999px"';
              6. if(window.ActiveXObject){
              7. if(typeofuri=='boolean'){
              8. iframeHtml+='src="'+'javascript:false'+'"';
              9. elsetypeofuri=='string'){
              10. iframeHtml+='src="'+uri+'"';
              11. iframeHtml+='/>';
              12. jQuery(iframeHtml).appendTo(document.body);
              13. returnjQuery('#'+frameId).get(0);
              14. createUploadForm://createform
              15. varformId='jUploadForm'+id;
              16. varfileId='jUploadFile'+id;
              17. varform=jQuery('<formaction=""method="POST"name="'+formId+'"id="'+formId+'"enctype="multipart/form-data"></form>');
              18. //使ajaxfileupload支持增加附加参数.
              19. if(data){
              20. variindata){
              21. jQuery('<inputtype="hidden"name="'+i+'"value="'+data[i]+'"/>').appendTo(form);
              22. //ajaxFileupload默认是只能上传一个文件,替换如下代码地实现多个文件上传.
              23. typeof(fileElementId)=='string'){
              24. fileElementId=[fileElementId];
              25. infileElementId){
              26. varoldElement=jQuery('#'+fileElementId[i]);
              27. varnewElement=jQuery(oldElement).clone();
              28. jQuery(oldElement).attr('id',fileId);
              29. jQuery(oldElement).before(newElement);
              30. jQuery(oldElement).appendTo(form);
              31. /*varoldElement=jQuery('#'+fileElementId);
              32. varnewElement=jQuery(oldElement).clone();
              33. jQuery(oldElement).attr('id',fileId);
              34. jQuery(oldElement).before(newElement);
              35. jQuery(oldElement).appendTo(form);*/
              36. //setattributes
              37. jQuery(form).css('position','absolute');
              38. jQuery(form).css('top','-1200px');
              39. jQuery(form).css('left','-1200px');
              40. jQuery(form).appendTo('body');
              41. returnform;
              42. ajaxFileUpload:function(s){
              43. //TODOintroduceglobalsettings,allowingtheclienttomodifythemforallrequests,notonlytimeout
              44. s=jQuery.extend({},jQuery.ajaxSettings,s);
              45. varid=newDate().getTime();
              46. varform=jQuery.createUploadForm(id,s.fileElementId,(typeof(s.data)=='undefined'?false:s.data));
              47. vario=jQuery.createUploadIframe(id,s.secureuri);
              48. varformId='jUploadForm'+id;
              49. //Watchforanewsetofrequests
              50. if(s.global&&!jQuery.active++){
              51. jQuery.event.trigger("ajaxStart");
              52. varrequestDone=false;
              53. //Createtherequestobject
              54. varxml={};
              55. if(s.global)
              56. jQuery.event.trigger("ajaxSend",[xml,s]);
              57. //Waitforaresponsetocomeback
              58. varuploadCallback=function(isTimeout){
              59. vario=document.getElementById(frameId);
              60. if(io.contentWindow){
              61. xml.responseText=io.contentWindow.document.body?io.contentWindow.document.body.innerHTML: xml.responseXML=io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;
              62. if(io.contentDocument){
              63. xml.responseText=io.contentDocument.document.body?io.contentDocument.document.body.innerHTML: xml.responseXML=io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
              64. catch(e){
              65. jQuery.handleError(s,null,e);
              66. if(xml||isTimeout=="timeout"){
              67. requestDone=true;
              68. varstatus;
              69. status=isTimeout!="timeout"?"success":"error";
              70. //Makesurethattherequestwassuccessfulornotmodified
              71. if(status!="error"){
              72. //processthedata(runsthexmlthroughhttpDataregardlessofcallback)
              73. vardata=jQuery.uploadHttpData(xml,s.dataType);
              74. //Ifalocalcallbackwasspecified,fireitandpassitthedata
              75. if(s.success)
              76. s.success(data,status);
              77. //Firetheglobalcallback
              78. jQuery.event.trigger("ajaxSuccess",153); font-weight:bold; background-color:inherit">else
              79. status="error";
              80. jQuery.handleError(s,e);
              81. //Therequestwascompleted
              82. if(s.global)
              83. jQuery.event.trigger("ajaxComplete",s]);
              84. //HandletheglobalAJAXcounter
              85. if(s.global&&!--jQuery.active)
              86. jQuery.event.trigger("ajaxStop");
              87. //Processresult
              88. if(s.complete)
              89. s.complete(xml,108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> jQuery(io).unbind();
              90. setTimeout(function(){
              91. jQuery(io).remove();
              92. jQuery(form).remove();
              93. catch(e){
              94. xml= };
              95. //Timeoutchecker
              96. if(s.timeout>0){
              97. //Checktoseeiftherequestisstillhappening
              98. if(!requestDone)uploadCallback("timeout");
              99. varform=jQuery('#'+formId);
              100. jQuery(form).attr('action',s.url);
              101. jQuery(form).attr('method','POST');
              102. jQuery(form).attr('target',frameId);
              103. if(form.encoding){
              104. jQuery(form).attr('encoding','multipart/form-data');
              105. else{
              106. jQuery(form).attr('enctype','multipart/form-data');
              107. jQuery(form).submit();
              108. jQuery('#'+frameId).load(uploadCallback);
              109. return{abort:function(){}};
              110. uploadHttpData:function(r,type){
              111. vardata=!type;
              112. data=type=="xml"||data?r.responseXML:r.responseText;
              113. //Ifthetypeis"script",evalitinglobalcontext
              114. if(type=="script")
              115. jQuery.globalEval(data);
              116. //GettheJavaScriptobject,ifJSONisused.
              117. if(type=="json")
              118. //针对ajaxfileupload返回json带<pre>标签解,
              119. //决方案为将eval("data="+data);换成data=jQuery.parseJSON(jQuery(data).text());
              120. //eval("data="+data);
              121. data=jQuery.parseJSON(jQuery(data).text());
              122. //evaluatescriptswithinhtml
              123. if(type=="html")
              124. jQuery("<div>").html(data).evalScripts();
              125. returndata;
              126. //针对ajaxfileupload.js结合低版本jquery报异常:TypeError:jQuery.handleErrorisnotafunction,添加如下代码.
              127. handleError:function(s,xhr,e){
              129. if(s.error){
              130. s.error.call(s.context||s,e);
              131. if(s.global){
              132. (s.context?jQuery(s.context):jQuery.event).trigger("ajaxError",[xhr,s,e]);
              133. });
              大功告成,亲以后有什么简答的上传工作，就交给他吧！！！

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