springmvc中文件跨服务器传输的方法
//1、首先在tomcat的新端口上重新开启一个tomcat服务器fileuploadserver服务器，并且在webapps下新建一个uploads文件夹
//2、在业务服务器上书写前端页面和后端的方法
// 注意：需要确定tomcat是否有写入权限如果没有需要修改tomcat的web.xml配置文件，赋予可写权限
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h3>文件上传</h3>
<%--<a href="user/fileUpload1">文件上传1</a>--%>
<form action="/user/fileUpload1" method="post" enctype="multipart/form-data" >
选择文件:<input type="file" name="upload"/><br/>
<input type="submit" value="上传">
</form>
<form action="user/fileUpload2" method="post" enctype="multipart/form-data" >
选择文件:<input type="file" name="upload"/><br/>
<input type="submit" value="上传">
</form>
<h3>跨服务器文件上传</h3>
<form action="user/fileupload3" method="post" enctype="multipart/form-data">
选择文件:<input type="file" name="upload" /><br/>
<input type="submit" value="上传" />
</form>
</body>
</html>
package com.hope.controller;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartResolver;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.util.List;
import java.util.UUID;
/**
* @author newcityman
* @date 2019/11/28 - 13:04
*/
@Controller("userController")
@RequestMapping(path = "/user")
public class UserController {
/**
* 传统方式上传
*
* @param request
* @return
* @throws Exception
*/
@RequestMapping(path = "/fileUpload1")
public String fileUpload1(HttpServletRequest request) throws Exception {
System.out.println("文件上传。。。。");
//使用fileupload组件完成文件上传
//获取上传的位置
String path = request.getSession().getServletContext().getRealPath("/uploads/");
//判断，路径是否存在
File file = new File(path);
if (!file.exists()) {
//创建该文件夹
file.mkdirs();
}
//解析request对象，获取上传文件项
DiskFileItemFactory factory = new DiskFileItemFactory(); //磁盘文件项工厂
ServletFileUpload upload = new ServletFileUpload(factory);
//解析rquest
List<FileItem> items = upload.parseRequest(request);
for (FileItem item : items) {
//判断当前文件是否是上传文件项
if (item.isFormField()) {
//说明文件是普通文件项
} else {
//说明是上传文件项
//获取上传文件的名称
String fileName = item.getName();
String uuid = UUID.randomUUID().toString().replace("-", "");
fileName = uuid + "_" + fileName;
//完成文件上传
item.write(new File(path, fileName));
//删除临时文件
item.delete();
}
}
return "success";
}
/**
* 使用配置文件解析器的方式上传
*
* @param request
* @param upload
* @return
* @throws Exception
*/
@RequestMapping(path = "/fileUpload2")
public String fileUpload2(HttpServletRequest request, MultipartFile upload) throws Exception {
System.out.println("配置文件解析器的方式上传。。。。");
//使用fileupload组件完成文件上传
//获取上传的位置
String path = request.getSession().getServletContext().getRealPath("/uploads/");
//判断，路径是否存在
File file = new File(path);
if (!file.exists()) {
//创建该文件夹
file.mkdirs();
}
//获取上传文件的名称
String filename = upload.getOriginalFilename();
String uuid = UUID.randomUUID().toString().replace("-", "");
filename = uuid + "_" + filename;
//完成文件上传
upload.transferTo(new File(path, filename));
return "success";
}
/**
* 跨服务器文件上传
*
* @param
* @return
* @throws Exception
*//*
@RequestMapping(path = "/fileUpload3")
public String fileUpload3(MultipartFile upload) throws Exception {
System.out.println("跨服务器的文件上传。。。。");
//定义上传文件服务器路径
String path = "http://localhost:9090/uploads/";
//获取上传文件的名称
String filename = upload.getOriginalFilename();
String uuid = UUID.randomUUID().toString().replace("-", " ");
filename = uuid + "_" + filename;
//创建客户端对象
Client client = Client.create();
//和图片服务器进行连接
WebResource webResource = client.resource(path + filename);
//上传文件
webResource.put(upload.getBytes());
return "success";
}*/
/**
* 跨服务器文件上传
* @return
*/