java 接收ios文件上传

旧城等待， 2022-07-12 06:29 150阅读 0赞

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

<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

<bean id="multipartResolver " class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
            
            <property name="defaultEncoding" value="utf-8" />
            
            <property name="maxUploadSize" value="10485760000" />
            
            <property name="maxInMemorySize" value="40960" />
        </bean>

参考博客：[http://blog.csdn.net/hf709363456/article/details/53665892][http_blog.csdn.net_hf709363456_article_details_53665892];

[http_blog.csdn.net_hf709363456_article_details_53665892]: http://blog.csdn.net/hf709363456/article/details/53665892