接到一个单子说是用制作一个简单的HDFS浏览器。
功能包括:基于HDFS的文件浏览、上传和下载。
用到的技术包括Java、HDFSAPI、tomcat的配置等
代码实现项目架构:
Controller层代码:
@Controller
@RequestMapping("/hdfs")
public class hdfsController {
private hdfsService hdfsService;
public hdfsService getHdfsService() {
return hdfsService;
}
@Resource
public void setHdfsService(hdfsService hdfsService) {
this.hdfsService = hdfsService;
}
@RequestMapping("/delete")
public String toDelete(@RequestParam(value="path",required=false) String path)
throws IOException{
hdfsService.delete(path);
return "success";
}
@RequestMapping(value="/ls",method=RequestMethod.GET)
public ModelAndView home(@RequestParam(value="path",required=false) String path, HttpServletRequest request, HttpServletResponse response)
throws Exception {
ModelAndView model = new ModelAndView();
if (StringUtils.isEmpty(path)) {
path = "/";
}
List hdfsFiles =hdfsService.ls(path);
model.addObject("file", hdfsFiles);
model.setViewName("/ls");
return model;
}
@RequestMapping("/download")
public String toDownload(@RequestParam(value="path",required=false) String path)
throws IOException{
hdfsService.download(path);
return "success";
}
@RequestMapping(value="/upload")
public String upLoad(HttpServletRequest request, HttpServletResponse response)
throws IllegalStateException, IOException{
//解析器解析request的上下文
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
//先判断request中是否包涵multipart类型的数据,
if(multipartResolver.isMultipart(request)) {
//再将request中的数据转化成multipart类型的数据
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
Iterator iter = multiRequest.getFileNames();
while(iter.hasNext()) {
MultipartFile file = multiRequest.getFile(iter.next());
if(file != null) {
String FileName = file.getOriginalFilename();
System.out.println(FileName);
CommonsMultipartFile cf= (CommonsMultipartFile)file;
DiskFileItem fi = (DiskFileItem)cf.getFileItem();
File inputFile = fi.getStoreLocation();
hdfsService.createFile(inputFile, "hdfs://192.168.88.100:8020/upload/"+FileName);
}
}
}
return "success";
}
前端部分页面:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ page isELIgnored="false" %>
<%String ref = request.getHeader("REFERER");%>
HDFS文件管理器
| 文件名 | 文件大小 | 拥有者 | 权限 | 时间 | 操作 |
| ${file.fileName} | ${file.fileSize} | ${file.owner} | ${file.permission} | ${file.modificationTime} | 删除 下载 |
HDFS简易Web浏览器
HDFS简易Web浏览器_哔哩哔哩_bilibili
总结比较轻松的需求,主要是之前做过类似的小项目直接拿来用即可。
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