1.html部分
<input style="width: 280px" type="file" name="upLoadProjectPlan" id="upLoadProjectPlan" value="<%=taskAppend.getTaskAllocationDoc()%>"/><a style="float: right; margin-right: 40px" class="button" href="javascript:void(0)"onclick="UpladFile('upLoadProjectPlan', '<%=task.getTaskid() %>')"><span>上传</span></a>
2.js中利用ajax产生表单并发送表单
function UpladFile(fileUploadId, taskid) {var fileObj = document.getElementById(fileUploadId).files[0]; // 获取文件对象var FileController = "updateWorkAction!fileUpload"; // 接收上传文件的后台处理程序地址 // FormData 对象var form = new FormData();//form.append("author", "hooyes"); // 可以增加表单数据form.append("taskid", taskid);form.append("file", fileObj); // 文件对象// XMLHttpRequest 对象var xhr = new XMLHttpRequest();xhr.open("post", FileController, true);xhr.onload = function () {location.reload(true); alert("上传完成!");};xhr.send(form);}
3.Action部分
public class UpdateWorkAction extends ActionSupport{private DistributeDao distributeDao;private String taskid;private List<File> file; // 上传的文件private List<String> fileFileName; // 文件名称private List<String> fileContentType; // 文件类型public DistributeDao getDistributeDao() {return distributeDao;}public void setDistributeDao(DistributeDao distributeDao) {this.distributeDao = distributeDao;}public List<File> getFile() {return file;}public void setFile(List<File> file) {this.file = file;}public List<String> getFileFileName() {return fileFileName;}public void setFileFileName(List<String> fileFileName) {this.fileFileName = fileFileName;}public List<String> getFileContentType() {return fileContentType;}public void setFileContentType(List<String> fileContentType) {this.fileContentType = fileContentType;}private void init() throws UnsupportedEncodingException{ServletActionContext.getRequest().setCharacterEncoding("UTF-8");ServletContext context = ServletActionContext.getServletContext(); }public String fileUpload() throws Exception{init();// 取得需要上传的文件数组List<File> files = getFile();if (files != null && files.size() > 0) {for (int i = 0; i < files.size(); i++) {FileOutputStream fos = new FileOutputStream(getSavePath() +
"\\" + getFileFileName().get(i));FileInputStream fis = new FileInputStream(files.get(i));byte[] buffer = new byte[1024];int len = 0;while ((len = fis.read(buffer)) > 0) {fos.write(buffer, 0, len);}fis.close();fos.close();}TaskAppend taskAppend = distributeDao.findLeaderMsg(Integer.parseInt(taskid));taskAppend.setTaskAllocationDoc(getFileFileName().get(0));distributeDao.updateTaskAppend(taskAppend);}return "fileUpload";}public String getTaskid() {return taskid;}public void setTaskid(String taskid) {this.taskid = taskid;} }
)
)
