基于struts实现文件的上传

最新推荐文章于 2021-10-19 16:41:44 发布

丁涛2024

最新推荐文章于 2021-10-19 16:41:44 发布

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分类专栏： java

本文链接：https://blog.youkuaiyun.com/qq_42240545/article/details/84725621

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本文详细介绍使用Struts框架进行文件上传的过程，包括前端页面设置、JavaScript异步上传配置及后端Action处理逻辑，适用于希望了解Struts文件上传具体实现的技术人员。

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基于struts实现文件的上传

首先是前端的jsp页面

<form>
<input type="file" id="upload" name="upload"/>
<input type="button" value="上传" onclick="up()"/>`
</form>

然后是js

<script src="<%=basePath%>core/scripts/boot.js" type="text/javascript"></script>
		<script src="<%=basePath%>core/scripts/EditForm.js" type="text/javascript"></script>
		<script src="<%=basePath%>core/scripts/jquery-1.6.2.min.js" type="text/javascript"></script>
 <script type="text/javascript">
        
               funtcion up(){
                    $.ajaxFileUpload({
                        url:'xxxxx.action',//用于文件上传的请求地址
                        fileElementId :'upload',//文件上传空间的id属性，通过这个id，相当于非异步中的myFile
                        dataType:'text',
                        success: function(data){
                            alert(data);
                        },
                        error: function(data){
                            alert(上传文件失败);
                        }
                    });
                }
        };             
    </script>

然后就是action区域的代码了

//初始化全局变量
private static YbwxSysNewsAttachDTO YbwxSysNewsAttachDtO =new YbwxSysNewsAttachDTO();;
//跟表单提交的input type = file 的name 保持一致
    private File upload;
    
    //文件名称 (upload+uploadName)固定格式
    private String uploadName;
    
    //文件类型 upload+"ContentType"固定格式
    private String uploadContentType;
    public File getUpload() {
        return upload;
    }
    public void setUpload(File upload) {
        this.upload = upload;
    }
    
    public String getUploadeName() {
        return uploadName;
    }
    public void setUploadName(String uploadName) {
        this.uploadName = uploadName;
    }
    public String getUloadContentType() {
        return muploadContentType;
    }
    public void setUploadContentType(String uploadContentType) {
        this.uploadContentType = uploadContentType;
    }
    	public String  uploadFile()throws Exception{	   
			//附件上传
				String isattachSaveFilePath = request.getRealPath("/");
					
				if (null != upload) {
						try {
							//String id = UuidUtil.get32UUID();
							
							// 扩展名格式：
							String extName = "";
							String headName = "";							
							if (uploadFileName.lastIndexOf(".") >= 0) {
								extName = uploadFileName.substring(uploadFileName.lastIndexOf("."));
								//获得文件名
								headName = uploadFileName.substring(0,uploadFileName.lastIndexOf("."));
							}
							String name=Tools.RandomFileName()+extName;//文件名
							String dateStr = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
							String filePath = "/"+dateStr.substring(0,4)+"/"+dateStr.substring(5,7)+"/"+dateStr.substring(8,10)+"/";
							String DesPath = isattachSaveFilePath+"/"+"upload/fujian"+filePath;
							this.copyFile(new FileInputStream(upload), DesPath,name).replaceAll("-", "");
							YbwxSysNewsAttachDtO.setFilename(headName+extName);
							YbwxSysNewsAttachDtO.setUrl(filePath+name);
							responseWriteHtml("yes");
						} catch (Exception e) {
							e.printStackTrace();
						}
					}else{
						responseWriteHtml("no");
					}
				return null;

		}
		
		/**
		 * 写文件到当前目录的upload目录中
		 * 
		 * @param in
		 * @param fileName
		 * @throws IOException
		 */
		private String copyFile(InputStream in, String dir, String realName)throws IOException {
			File file = new File(dir, realName);
			if (!file.exists()) {
				if (!file.getParentFile().exists()) {
					file.getParentFile().mkdirs();
				}
				file.createNewFile();
			}
			FileUtils.copyInputStreamToFile(in, file);
			return realName;
		}

然后执行保存就行了