Easyui前端、JAVA后台 上传附件

前端使用easyui框架，后台使用JAVA 的JFinal框架开发

功能描述：实现附件上传功能。文件上传路径为：。。/upload(上传文件夹)/身份证号/慢病编码/上传的附件。

细节要求：实现多图片上传，上传后可在前台页面实现二次增加和删除

1.前台页面显示：填写身份证号、选择慢病信息，点击“上传附件”按钮选择要上传的文件

    <tr>
    <td class="pe-label"><span class="sp_waning">*</span>身份证号：</td>
    <td class="pe-content">
        <input id="newchrApply_app05" name="newchrApply_app05" class="easyui-textbox">
    </td>
    <td class="pe-label">申请疾病：</td>
    <td class="pe-content">
        <input id="newchrApply_app10" name="newchrApply_app10" class="easyui-combobox">
</tr>
<tr>
   <td class="pe-label">附件上传：</td>
   <td class="pe-content" colspan="3">
      <span class="ui_button_primary"><label for="newchrApply_file1">上传附件</label></span>
      <input id="newchrApply_file1" name="newchrApply_file1" type="file" style="position:absolute;clip:rect(0 0 0 0);" multiple="multiple">
   </td>
</tr>
<tr>
   <td class="pe-label">上传附件名称：</td>
   <td class="pe-content" colspan="3">
      <ul id='content'></ul>
   </td>
</tr>

2.在“上传附件名称”中显示上传的文件信息及删除按钮。

var chrApply_filesTemp = [];//保存上传的附件集合
//显示上传文件名
var test = document.getElementById('newchrApply_file1');
test.addEventListener('change', function() {
   var t_files = this.files;
   var p_idnum = $.trim($('#newchrApply_app05').val()); //身份证号
   var p_icd01 = $('#newchrApply_app10').combobox('getValue');
   if(p_idnum == '' || p_icd01 == '') {
      $.messager.alert('提示', '请输入身份证号或选择疾病！', 'warning');
      return;
   }
   var p_app01 = $.trim($('#newchrApply_app01').val());
   if(p_app01 == '') {
      var p_code = "SQ" + CreateCode(3);
      $('#newchrApply_app01').val(p_code);
   }
   var str = '';
   if(t_files.length > 0) {
      var formData = new FormData();
      for(var i = 0; i < t_files.length; i++) {
         formData.append("file_cont" + i, t_files[i]);
      }
      formData.append("fileCount", t_files.length);
      formData.append("app05", p_idnum);
      formData.append("app10", p_icd01);
      $.ajax({
         url: '/ChrApply/UploadFiles',
         type: 'POST',
         data: formData,
         processData: false,
         contentType: false,
         success: function(result) {
            if(result.code > 0) {
               var p_filesname = [];
               if(chrApply_filesTemp.length > 0) {
                  for(var i = 0; i < chrApply_filesTemp.length; i++) {
                     if(p_filesname.indexOf(chrApply_filesTemp[i].name) == -1) {
                        p_filesname.push(chrApply_filesTemp[i].name);
                     }
                  }
               }
               var chrApply_filesUp = t_files; //新上传的文件集合
               if(chrApply_filesUp.length > 0) {
                  for(var i = 0; i < chrApply_filesUp.length; i++) {
                     if(p_filesname.indexOf(chrApply_filesUp[i].name) == -1) {
                        chrApply_filesTemp.push({
                           'name': chrApply_filesUp[i].name,
                           'size': chrApply_filesUp[i].size
                        });
                     }
                  }
               }
               for(var i = 0, len = chrApply_filesTemp.length; i < len; i++) {
                  str += '<li id="li_' + i + '">名称：<span id="sp_name_' + i + '">' + chrApply_filesTemp[i].name + '</span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;大小：<span id="sp_size_' + i + '"> ' + parseInt(chrApply_filesTemp[i].size / 1024) + 'KB</span>' +
                     ' <input id="delfj" type="button" value="删除" onclick="delAnnex(' + i + ')" ></li>';
               }
               document.getElementById('content').innerHTML = str;
            } else {
               $.messager.alert('提示', result.msg, 'warning');
            }
         }
      });
   }
}, false);

    /**
     * 上传附件(多文件上传)
     * 
     */
    public void UploadFiles() {
        MessageData data = new MessageData();
        try {
            UploadFile file0 = getFile("file_cont0");
            String UploadPath0 = file0.getUploadPath();
            Integer fileCount = getParaToInt("fileCount");
            String app05 = getPara("app05");// 身份证号
            String app10 = getPara("app10");// 疾病编码
            String path = "upload/" + app05 + "/" + app10 + "/".trim();

            // 1.新建【身份证】文件夹
            FileOperate fo = new FileOperate();
            fo.createFolder(UploadPath0 + "/" + app05);
            File directory = new File(UploadPath0 + "/" + app05);// 设定为当前文件夹
            // System.out.println(directory.getCanonicalFile());//返回类型为File
            // 2.在【身份证】文件夹下-->建立【疾病编码】文件夹
            FileOperate fo_1 = new FileOperate();
            fo_1.createFolder(directory.getCanonicalFile() + "/" + app10);

            String realPath = getSession().getServletContext().getRealPath(path);
            // 数据库添加附件信息
            for (int i = 0; i < fileCount; i++) {
                UploadFile file = getFile("file_cont" + i);
                String fileName = file.getFileName();
                String newName = fileName;

                // 移动文件：从oldPath路径 -->移动到-->newPath路径,并删除oldPath路径 里的文件
                String oldPath = file.getUploadPath() + "\" + newName.trim();
                String newPath = file.getUploadPath() + "\" + app05 + "\" + app10 + "\" + newName.trim();
                file.getFile().renameTo(new File(realPath + "/" + newName));
                fo_1.moveFile(oldPath, newPath);
            }
            data.setCode(1);
        } catch (Exception e) {
            data.setCode(0);
            data.setMsg("上传失败！" + e.getCause().getMessage());
        } finally {
            JSONObject json = JSONObject.fromObject(data);
            renderJson(json.toString());
        }
    }

3.附件上传保存路径：

4.实现前台页面删除附件功能

//删除
function delAnnex(id) {
   var del_idnum = $.trim($('#newchrApply_app05').val()); //身份证号
   var del_icd01 = $('#newchrApply_app10').combobox('getValue');
   var del_name = document.getElementById("sp_name_" + id).innerText;

   $.ajax({
      url: '/ChrApply/DeleteAnnex',
      type: 'POST',
      data: {
         'app05': del_idnum,
         'app10': del_icd01,
         'ann01': del_name
      },
      success: function(result) {
         if(result.code > 0) {
            // 删除集合中的元素
            for(var i = 0; i < chrApply_filesTemp.length; i++) {
               var flg = isEqual(chrApply_filesTemp[i].name.valueOf(), del_name.valueOf());
               if(flg == true) {
                  chrApply_filesTemp.splice(i, 1);
               }
            }
            var first = document.getElementById("li_" + id);
            first.remove();
         } else {
            $.messager.alert('提示', result.msg, 'warning');
         }
      }
   });
}

    /**
     * 删除附件
     */
    public void DeleteAnnex() {
        MessageData data = new MessageData();
        try {
            String app05 = getPara("app05");// 身份证号
            String app10 = getPara("app10");// 疾病编码
            String ann01 = getPara("ann01");// 文件名
            String url = "upload/" + app05 + "/" + app10 + "/" + ann01.trim();

            // 删除上传到服务器的文件
            String realPath = getSession().getServletContext().getRealPath(url);
            File file = new File(realPath);
            file.delete();

            data.setCode(1);
        } catch (Exception e) {
            data.setCode(0);
            data.setMsg("删除申诉材料失败！" + e.getCause().getMessage());
        } finally {
            JSONObject json = JSONObject.fromObject(data);
            renderJson(json.toString());
        }
    }

注：上传附件及删除附件后台JAVA代码中使用到的UploadFile类及FileOperate类的代码请参考我的博文《JAVA文件操作工具类（读、增、删除、复制）》https://www.cnblogs.com/KLLQBKY/p/9293154.html