文件上传至服务器(java+[easyUi+common])

来源：互联网发布：sai手绘软件下载编辑：程序博客网时间：2024/05/29 17:41

html部分:

<!-- 上传地图文件的弹出框 --><div id="uploadMapFiledlg" class="easyui-dialog"style="width: 350px; height:180px;" closed="true"buttons="#upload-buttons" data-options="modal:true"   ><form id="uploadMapFileForm" method="post" enctype="multipart/form-data" action="reportInfo/uploadMapFile.do"><fieldset id="newMenuSet"><table border="0px" cellspacing="1" cellpadding="1" >    <tr style="line-height: 32px"><td  style="text-align: left;" ><labelstyle="font-size: 12px;">上传文件:</label></td><td  style="text-align: left">   <input  style="width: 220px; height: 25px" class="easyui-filebox" id="uploadfile" name="uploadfile" data-options="prompt:'只支持JSON格式...',buttonText:'选择文件...'"></td></tr></table></fieldset></form><div id="resultDiv2"></div><!--按钮部分--><div id="upload-buttons"><a href="javascript:void(0)" class="easyui-linkbutton"iconCls="icon-import" id="uploadBtn">上传</a> <ahref="javascript:void(0)" class="easyui-linkbutton"iconCls="icon-cancel"onclick="javascript:$('#uploadMapFiledlg').dialog('close')">取消</a></div>  <!--弹出框按钮懒得复制了,在datagrid里-->

js代码:

//按钮部分$(function(){$("#uploadBtn").click(function(){ if($(this).linkbutton('options').disabled == false){ var file =$("#uploadfile").filebox('getValue'); if(file==""){   $.messager.alert('提示', '请先选择要上传文件!', 'info');   return; } var type=file.slice(file.lastIndexOf(".")+1,file.length); var checkType=type.toUpperCase(); if(checkType!=="JSON"){ $.messager.alert('提示', '所选的文件格式不正确!', 'info');   return; }; var uploadFileName=file.slice(file.lastIndexOf("\\")+1,file.length); $.ajax({             type: "post",             url: contextPathName+"/reportInfo/cheackFile.do",             data: {"uploadFileName":uploadFileName},             dataType: "json",             success: function (data) {             if(data.success){             if(data.isExists){           //用户确定覆盖?           $.messager.confirm('确认对话框', data.fileMsg, function(r){          if (r){//覆盖(继续)          virtualUpload();          }else{ //取消          var content ="<p>上传结果:</p>";            content +="<p>您取消了文件的上传</p>";            $('#resultDiv2').html(content);            $('#uploadMapFileForm').form("reset");          return;          }          });             }else{//文件不存在           virtualUpload();             }             }             },             error:function(){             $.messager.alert('提示', "服务器发生错误!", 'info');             }         });   } });    //显示上传地图文件窗口 $("#uploadMapFileBtn").click(function(){  if($(this).linkbutton('options').disabled == false){  $('#uploadMapFileForm').form("reset");  $('#resultDiv2').empty();  $('#uploadMapFiledlg').dialog('open').dialog('setTitle', '上传地图文件');  } });})//实际上传操作function virtualUpload(){var intervalId = null;      var progressBar = null;  var options = {             dataType : "json",             beforeSubmit : function() {             $.messager.progress({            title:'请稍后',            msg:'正在处理中...',           });           },           complete:function(){                                                $.messager.progress('close');              },           success : function(data) {             if(data.success){           $.messager.alert('提示', "操作成功", 'info');                     var content ="<p>上传结果:</p>";           content +="<p>"+data.resultMsg+"</p>";           $('#resultDiv2').html(content);           $('#uploadMapFileForm').form("reset");           }else{           $('#resultDiv2').empty();           $.messager.alert('提示', data.errorMsg, 'info');           }           },             error : function(result) {             $.messager.alert('提示', "服务器发生错误!", 'info');           }         };         $('#uploadMapFileForm').ajaxSubmit(options);         return !1; }

java后台(控制器里的)

//检查文件是否存在            @RequestMapping ("/cheackFile")    @ResponseBody    public String cheackFile (HttpServletResponse response, HttpServletRequest request)    {        Map <String, Object> data = new HashMap <String, Object> ();        boolean result = Boolean.TRUE;        // 定义容器接收文件名        String uploadFileName = null;        try        {            String brProjectPath = request.getSession ().getServletContext ().getRealPath ("/");            uploadFileName = request.getParameter ("uploadFileName");            // 文件保存路径            String filePath = brProjectPath + "map\\" + uploadFileName;            File date = new File (filePath);            if (date.exists ())            {                data.put ("isExists", Boolean.TRUE);                data.put ("fileMsg", "文件已存在!是否覆盖!");            }            else            {                data.put ("isExists", Boolean.FALSE);            }        }        catch (Exception e)        {            _logger.error (e.getMessage (), e);            result = Boolean.FALSE;            data.put ("errorMsg", "文件上传失败!");        }        data.put ("success", result);        String jsonStr = JSONObject.fromObject (data).toString ();        return jsonStr;    }//接收上传文件    @RequestMapping ("/uploadMapFile")    @ResponseBody    public String doUploadMapFile (@RequestParam (value = "uploadfile", required = false) MultipartFile uploadfile,                                   HttpServletRequest request)    {        Map <String, Object> data = new HashMap <String, Object> ();        boolean result = Boolean.TRUE;        // 定义容器接收文件名        String uploadFileName = null;        try        {            InputStreamReader read = new InputStreamReader (uploadfile.getInputStream (), "utf-8");// 考虑到编码格式            BufferedReader bufferedReader = new BufferedReader (read);            StringBuffer jsonContent = new StringBuffer ();            String content = "";            while ((content = bufferedReader.readLine ()) != null)            {                jsonContent.append (content);            }            String brProjectPath = request.getSession ().getServletContext ().getRealPath ("/");            uploadFileName = uploadfile.getOriginalFilename ();            // 文件保存路径            String filePath = brProjectPath + "map\\" + uploadFileName;            File date = new File (filePath);            FileOutputStream fop = null;            fop = new FileOutputStream (date);            byte[] contentInBytes = jsonContent.toString ().getBytes ();            fop.write (contentInBytes);            fop.flush ();            fop.close ();            read.close ();        }        catch (Exception e)        {            _logger.error (e.getMessage (), e);            result = Boolean.FALSE;            data.put ("errorMsg", "文件上传失败!");        }        data.put ("success", result);        data.put ("resultMsg", uploadFileName + "上传成功!");        String jsonStr = JSONObject.fromObject (data).toString ();        return jsonStr;    }