java 接收ios文件上传

ios Multipart/form-data POST请求java后台spring接口一直出错，搞了两天，终于解决了，积累下来

package com.xx.controller;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.Iterator;import java.util.LinkedList;import java.util.List;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;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.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.ResponseBody;import com.nupaApp.model.FileMeta;@Controller@RequestMapping("/controller")public class File1Controller {    LinkedList<FileMeta> files = new LinkedList<FileMeta>();    FileMeta fileMeta = null;    /***************************************************     * URL: /rest/controller/upload upload(): receives files     *      * @param request     *            : MultipartHttpServletRequest auto passed     * @param response     *            : HttpServletResponse auto passed     * @return LinkedList<FileMeta> as json format     * @throws IOException     * @throws FileUploadException     ****************************************************/    @RequestMapping(value = "/upload", method = RequestMethod.POST)    @ResponseBody    public String upload(HttpServletRequest request, HttpServletResponse response)            throws IOException, FileUploadException {        boolean isMultipart = ServletFileUpload.isMultipartContent(request);// 判断是否是表单文件类型        DiskFileItemFactory factory = new DiskFileItemFactory();        ServletFileUpload sfu = new ServletFileUpload(factory);        List items = sfu.parseRequest(request);// 从request得到所有上传域的列表        for (Iterator iter = items.iterator(); iter.hasNext();) {            FileItem fileitem = (FileItem) iter.next();            if (!fileitem.isFormField() && fileitem != null) {// 判读不是普通表单域即是file                                                                // 操作fileitem文件步骤，可以获取大小、路径                // 定义图片输出路径                String imgPath = "e:" + System.currentTimeMillis() + ".jpg";                // 定义图片流                InputStream fin = fileitem.getInputStream();                // 定义图片输出流                FileOutputStream fout = new FileOutputStream(imgPath);                // 写文件                byte[] b = new byte[1024];                int length = 0;                while ((length = fin.read(b)) > 0) {                    fout.write(b, 0, length);                }                // 关闭数据流                fin.close();                fout.close();            }        }        return "200";    }}

pom.xml 添加

<!-- 这个用于上传文件工具操作 -->        <dependency>            <groupId>commons-fileupload</groupId>            <artifactId>commons-fileupload</artifactId>            <version>1.3.1</version>        </dependency>        <dependency>            <groupId>commons-io</groupId>            <artifactId>commons-io</artifactId>            <version>2.4</version>        </dependency>

spring-config.xml 添加bean

<!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件 中也不必引入上传组件包 -->    <bean id="multipartResolver "        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">        <!-- 默认编码 -->        <property name="defaultEncoding" value="utf-8" />        <!-- 文件大小最大值 -->        <property name="maxUploadSize" value="10485760000" />        <!-- 内存中的最大值 -->        <property name="maxInMemorySize" value="40960" />    </bean>

参考博客：http://blog.csdn.net/hf709363456/article/details/53665892;