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最新推荐文章于 2024-01-30 20:16:43 发布

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最新推荐文章于 2024-01-30 20:16:43 发布

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分类专栏： java

本文链接：https://blog.youkuaiyun.com/qq_35642457/article/details/102519931

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本文介绍了如何通过JavaScript配合Java后端控制器，利用阿里云OSS服务进行文件上传的操作。示例中包含JS代码片段以及Java Controller和OSSutil的Java代码示例。

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在这里保存一下方便查找

function PlantDoUpload(fromId,imgId){//  所有表单 图片上传
    console.log(fromId,imgId)
    var form = new FormData(document.getElementById(fromId));
    $.ajax({
        url: baseURL +"file/fileUpload",
        type:"POST",
        data:form,
        processData:false,
        contentType:false,
        success:function(data){
           
            if(data.code == 200){

                var url = data.url;
                var urls = data.urls;
                var de = url.substring(25,url.length-4);
                var img = "<span id='a"+de+"' style='position: relative;display: inline-block'><img  style='width:80px;height:80px;float: left;'  src='"+url+"'/>" +
                    "<img src='../../statics/images/wen.jpg' οnclick='deleteImg("+JSON.stringify(data)+",\""+imgId+"\",\"a"+de+"\")' style='position: absolute;top: 0px;right: 0px;width: 15px;height: 15px;' />" +
                    "</span>"
                $("#"+imgId).append(urls);
                $("#"+imgId+"s").append(img);
            }else{
                layer.alert(data.msg);
                return;
            }
        },
        error:function(e){
            layer.alert("系统异常！");
        }
    });
}

java controller代码

/*
 * 上传文件到OSS
 * 返回设置结果（json）
 * @Param JSONObject jsonObject
 */
@RequestMapping(value="/file/fileUpload",method= RequestMethod.POST)
@ApiOperation(value="上传文件到OSS", notes="test")
   public String fileUpload(HttpServletRequest request, String dir) throws Exception {
       JSONObject json = new JSONObject();
       MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
       Map<String, MultipartFile> fileMap = multipartRequest.getFileMap();
       //定义允许上传的文件扩展名
       HashMap<String, String> extMap = new HashMap<String, String>();
       extMap.put("image", "gif,jpg,jpeg,png,bmp");
       extMap.put("flash", "swf,flv");
       extMap.put("media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb,mp4");
       extMap.put("file", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2,pdf");             
       FileItemFactory factory = new DiskFileItemFactory();
       ServletFileUpload upload = new ServletFileUpload(factory);
       upload.setHeaderEncoding("UTF-8");
       //此处是直接采用Spring的上传
       for (Map.Entry<String, MultipartFile> entity : fileMap.entrySet()) {
           MultipartFile mf = entity.getValue();
           InputStream is = mf.getInputStream();
           String name = mf.getOriginalFilename();
           String suffix = name.substring(name.lastIndexOf(".") + 1);
           String fileName = UUID.randomUUID().toString().replaceAll("-", "")+"."+suffix;
           logger.info("调用OSS上传");
           boolean b = OSSUtil.uploadFile(fileName, is);
      if(b) {             
         json.put("code", 200);
         json.put("msg", "成功");
         json.put("url", "http://www.baidu.com/"+fileName);//返回自己设置的服务器前缀http://www.baidu.com/
               json.put("urls", "http://www.baidu.com/"+fileName+";");
               logger.info("上传成功");
           }else {
         json.put("code", 100);
         json.put("msg", "上传失败");
               logger.info("上传失败");
      }
       }
       return json.toString();
   }

OSSutil.java

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSSClient;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.GetObjectRequest;
import org.apache.log4j.Logger;

import java.io.File;
import java.io.InputStream;

public class OSSUtil {
    static Logger logger = Logger.getLogger(OSSUtil.class);

    private static String endpoint = "http://www.baidu.com";//自己的服务器地址

    // accessKeyId和accessKeySecret是OSS的访问密钥
    private static String accessKeyId = "Lw4ferf4f4f4";//假的
    private static String accessKeySecret = "dssv4f34f34f43f3";//假的

    // Bucket用来管理所存储Object的存储空间
    private static String bucketName = "ee-file";
    
    /**
     * 上传文件
     * @param filename 上传文件名
     * @param input    上传文件流
     * @return
     */
   public static boolean uploadFile(String filename, InputStream input) { 
      boolean success = false; 
      OSSClient ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
        try {
            if (ossClient.doesBucketExist(bucketName)) {
               logger.info("您已经创建Bucket：" + bucketName + "。");
            } else {
               logger.info("您的Bucket不存在，创建Bucket：" + bucketName + "。");
                ossClient.createBucket(bucketName);
            }
            ossClient.putObject(bucketName,filename,input);
            success = true;
            ossClient.shutdown();
        } catch (OSSException oe) {
            oe.printStackTrace();
        } catch (ClientException ce) {
            ce.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            ossClient.shutdown();
        }
      return success; 
   }

}

好了，就到这里了。