1. 修改tomcat配置， 允許文件寫操作
實際項目中可能要用到單獨的文件服務器， 這時候可以使用jersey上傳文件的方法達到分離文件服務器和主服務器的目的
使用Tomcat需要修改conf目錄下的web.xml， 添加readonly參數爲false
- <servlet>
- <servlet-name>default</servlet-name>
- <servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>
- <init-param>
- <param-name>debug</param-name>
- <param-value>0</param-value>
- </init-param>
- <init-param>
- <param-name>readonly</param-name>
- <param-value>false</param-value>
- </init-param>
- <init-param>
- <param-name>listings</param-name>
- <param-value>true</param-value>
- </init-param>
- <load-on-startup>1</load-on-startup>
- </servlet>
2. 新建文件服務器web工程
新建文件服務器的web工程， 其他默認， 在webapp下新建upload目錄用於存儲上傳後的照片， 放置一個任意文件， 放置打包的時候空文件夾被忽略掉
3. 新建項目web工程
jersey用到的jar
- <dependency>
- <groupId>com.sun.jersey</groupId>
- <artifactId>jersey-core</artifactId>
- <version>1.19</version>
- </dependency>
- <dependency>
- <groupId>com.sun.jersey</groupId>
- <artifactId>jersey-client</artifactId>
- <version>1.19</version>
- </dependency>
在springmvc中配置CommonsMultipartResolver支持文件上傳
- <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
- <property name="maxUploadSize" value="10240000"/>
- </bean>
編寫Controller進行文件上傳
- package cn.codeyang.controller;
- import cn.codeyang.util.PropUtils;
- import com.sun.jersey.api.client.Client;
- import com.sun.jersey.api.client.WebResource;
- import org.springframework.stereotype.Controller;
- import org.springframework.web.bind.annotation.RequestMapping;
- import org.springframework.web.bind.annotation.RequestMethod;
- import org.springframework.web.multipart.MultipartFile;
- import org.springframework.web.multipart.MultipartHttpServletRequest;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletResponse;
- import java.io.IOException;
- import java.util.Iterator;
- /**
- * 使用Jersey加springmvc上傳文件到文件服務器
- */
- @Controller
- @RequestMapping("/upload")
- public class UploadController {
- @RequestMapping(value = "/toUpload", method = RequestMethod.GET)
- public String tuUpload(){
- return "upload";
- }
- @RequestMapping(value = "upload", method = RequestMethod.POST)
- public void upload(HttpServletRequest request, HttpServletResponse response) throws IOException {
- MultipartHttpServletRequest req = (MultipartHttpServletRequest) request;
- Iterator<String> iter = req.getFileNames();
- if (iter.hasNext()){
- String fileName = iter.next();
- MultipartFile file = req.getFile(fileName);
- fileName = file.getOriginalFilename();
- byte[] byteArr = file.getBytes();
- Client client = Client.create();
- WebResource resource = client.resource(PropUtils.readProp("file_path") + "/upload/" + fileName);
- resource.put(byteArr);
- }
- }
- }
編寫前端jsp代碼
- <%@ page contentType="text/html;charset=UTF-8" language="java" %>
- <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
- <%@ page isELIgnored="false" %>
- <html>
- <head>
- <title></title>
- </head>
- <body>
- <form action="<c:url value="/upload/upload"/> " method="post" enctype="multipart/form-data">
- <input type="file" name="f"/>
- <input type="submit" value="Submit">
- </form>
- </body>
- </html>
文件上傳效果展示
文件上傳成功
