分享一下FastDFS的簡單上手的demo,挺簡單的.其中文件上傳流程大致如下:
controller裏的上傳方法:
@RequestMapping("/fastdfs/upload")
@ResponseBody
public String uploadCreditorInfo(@RequestParam("id") Integer id, @RequestParam("fileName") MultipartFile file){
int status = -1;
//文件擴展名
//originalFilename得到的文件名:aaa.txt
String originalFilename = file.getOriginalFilename();
String fileExtName = originalFilename.substring(originalFilename.indexOf(".")+1);
try {
//將文件轉換爲字節數組
byte[] fileBatys = file.getBytes();
//調用service上傳方法
status = creditorInfoService.uploadCreditorInfo(id,fileBatys,fileExtName);
} catch (IOException e) {
e.printStackTrace();
}
return "<script>window.parent.uploadOK("+status+")</script>";
}public int uploadCreditorInfo(Integer id,byte[] fileBatys, String exName) {
int retCode = 10000;
String[] arry=null;
//上傳
if ( exName != null && exName.length()>0) {
arry = FastDFSClient.uploadFile(fileBatys,exName);
//更新數據庫信息
String contracturl = "http://192.168.174.129/" + arry[0] + "/" + arry[1];
CreditorInfo creditorInfo = new CreditorInfo();
creditorInfo.setContracturl(contracturl);
creditorInfo.setGroups(arry[0]);
creditorInfo.setPath(arry[1]);
creditorInfo.setId(id);
retCode = creditorInfoMapper.updateByPrimaryKeySelective(creditorInfo);
}
return retCode;
} /**
* 文件上傳
*
* @param fileBytes
* @param fileExtName
* @return
*/
public static String[] uploadFile (byte[] fileBytes, String fileExtName) {
TrackerServer trackerServer = null;
StorageServer storageServer = null;
String[] array = null;
try {
//1.初始化fastdfs的連接信息配置
ClientGlobal.init("fastdfs.properties");
//2.創建一個Tracker的客戶端對象
TrackerClient trackerClient = new TrackerClient();
//3.獲得一個Tracker server對象
trackerServer = trackerClient.getConnection();
//4.獲得一個Storage server對象
storageServer = trackerClient.getStoreStorage(trackerServer);
//5.創建一個Storage客戶端對象
StorageClient storageClient = new StorageClient(trackerServer, storageServer);
//6.通過storageClient客戶端對象，就可以去操作fastdfs文件系統了
//文件上傳
array = storageClient.upload_file(fileBytes, fileExtName, null);
} catch (IOException e) {
e.printStackTrace();
} catch (MyException e) {
e.printStackTrace();
} finally {
try {
if (null != trackerServer) {
trackerServer.close();
}
if (null != storageServer) {
storageServer.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return array;
}<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>FastDFS---Demo</title>
<link rel="stylesheet" href="${pageContext.request.contextPath}/css/bootstrap.min.css">
<script src="${pageContext.request.contextPath}/js/jquery.min.js"></script>
<script src="${pageContext.request.contextPath}/js/bootstrap.min.js"></script>
</head>
<body style="margin: 50px;">
<form action="${pageContext.request.contextPath}/fastdfs/upload" class="form-horizontal" role="form" method="post" enctype="multipart/form-data" target="uploadFrame">
<div class="form-group">
<label class="col-sm-2 control-label">借款人真實姓名</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="realname" name="realname" value="${creditorInfo.realname}">
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">借款人手機號</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="phone" name="phone" value="${creditorInfo.phone}">
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">借款人身份證</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="idCard" name="idCard" value="${creditorInfo.idCard}">
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">借款人性別</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="sex" name="sex" value="${creditorInfo.sex==1?"男":"女"}">
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">借款人地址</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="address" name="address" value="${creditorInfo.address}">
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">上傳合同</label>
<div class="col-sm-10">
<input type="file" class="form-control" id="fileName" name="fileName">
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<input type="hidden" class="form-control" id="id" name="id" value="${creditorInfo.id}">
<button type="submit" class="btn btn-default">提 交</button>
</div>
</div>
<%--頁面不刷新上傳文件，借鑑一個iframe--%>
<iframe id="uploadFrame" name="uploadFrame" style="display: none;"></iframe>
</form>
<%--上傳後結果返回頁面展示--%>
<script type="text/javascript">
function uploadOK(status) {
alert(status)
if (status == 1) {
//文件上傳成功 layer彈層
layer.confirm('文件上傳成功，是否需要跳轉到列表頁?', function(index){
//do something
window.location.href="${pageContext.request.contextPath}/fastdfs/index"
layer.close(index);
});
} else {
//文件上傳失敗
layer.alert("Sorry，文件上傳失敗了")
}
}
</script>
<script src="${pageContext.request.contextPath}/layer/layer.js"></script>
</body>
</body>
</html><iframe id="uploadFrame" name="uploadFrame" style="display: none;"></iframe>這段代碼需要同表格一起提交,它與表格頭部信息其實是一一對應的,就是表單頭信息裏的target="uploadFrame".如果編寫時沒有將下面這段代碼加到表單裏一起提交,那麼頁面是跳轉不了的,.
<form action="${pageContext.request.contextPath}/fastdfs/upload" class="form-horizontal" role="form" method="post" enctype="multipart/form-data" target="uploadFrame">