ajax上传图片

<input type="file" value="上传图片" name="photo" id="uploadPhoto" >

<button class="btn btn-default" type="button" onclick="uploadFile()" value="上传">上传</button>

function uploadFile(){
if(!$("#uploadPhoto").val()){
alert("请选择需要上传的图片");
return false;
}
$.ajaxFileUpload ({
url: '../../../loadfile/uploadfile.action',//用于文件上传的服务器端请求地址
secureuri: false,//是否需要安全协议，一般设置为false
fileElementId: 'uploadPhoto',//文件上传域的ID
dataType: 'json',//返回值类型 一般设置为json
//服务器成功响应处理函数
success:function (data,status) {
alert(data);
$("#photonPk").val(data.message);
$("#showDevPic").attr("src","../../../loadfile/showPic.action?sysPk="+data.message)//取图片
},
//服务器响应失败处理函数
error:function (data,status,e){
alert("as:"+e);
}
} );
return false;
}

action中：

private File photo;
private List<String> fileContentType;

private SystemAttachmentService attachmentService;
private Long objectId;
private Long sysPk;

/get set 方法/

@Action("uploadfile") public String upLoadPic() throws Exception { SystemAttachment ssa = new SystemAttachment(); byte[] byte_photo = FileCopyUtils.copyToByteArray(getPhoto()); ssa.setContent(byte_photo); ssa.setCreateTime(new Date()); ssa.setCreateUser(getCurrentUserCode()); ssa.setDeleteFlag(0l); Long pk = attachmentService.saveSystemAttach(ssa); getJson().put("message",pk); return "forjson"; } @Action("showPic") public String showViewPic() { OutputStream out = null; SystemAttachment ss = null; if(null!=objectId){ ss = attachmentService.querySysPicForObjectId(objectId); }else{ ss = attachmentService.querySysPicForSyspk(sysPk); } try { out = getHttpServletResponse().getOutputStream(); if (null != ss) { try { out.write(ss.getContent()); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } }else{ out.write(attachmentService.querySysPicForObjectId(0l).getContent()); } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { try { out.flush(); out.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return null; }

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!