java实现图片上传至本地实例详解

#/u672c/u5730/u670d/u52a1/u5668/u56fe/u7247/u4fdd/u5b58/u8def/u5f84IMAGEPATH=/mall/upload/image/ #/u56fe/u7247/u540e/u7f00/u540dFILE_EXTEND_NAME=gif,jpg,jpeg,png,bmp #/u672c/u5730/u670d/u52a1/u5668/u89c6/u9891/u5b58/u50a8/u5730/u5740MEDIAPATH=/mall/upload/media/ #/u89c6/u9891/u540e/u7f00/u540dMEDIA_EXTEND_NAME=mp4

/** * 文件上传工具类 * @author sang */@Controllerpublic class UploadUtil { /** 记录日志对象 */ private static final MyLogger LOGGER = new MyLogger(UploadUtil.class); /**图片格式错误信息*/ private static final String LOGGERINFO1 = "的图片不符合限制"; /**  * 备注：  * uploadImgLocal,uploadImgOSS,ossConfMapper均是静态成员变量  * 则添加注解注意只能用@Autowired且get,set方法不能有static否则报错  * */ /**文件上传：本地,注意*/ private static UploadImgLocal uploadImgLocal; /**文件上传：OSS对象 */ private static UploadImgOSS uploadImgOSS; /**OSS配置查询 */ private static OSSConfMapper ossConfMapper; 	public UploadImgLocal getUploadImgLocal() {		return uploadImgLocal;	}	@Autowired	public void setUploadImgLocal(UploadImgLocal uploadImgLocal) {		UploadUtil.uploadImgLocal = uploadImgLocal;	} 	public UploadImgOSS getUploadImgOSS() {		return uploadImgOSS;	}	@Autowired	public void setUploadImgOSS(UploadImgOSS uploadImgOSS) {		UploadUtil.uploadImgOSS = uploadImgOSS;	} 	public OSSConfMapper getOssConfMapper() {		return ossConfMapper;	}	@Autowired	public void setOssConfMapper(OSSConfMapper ossConfMapper) {		UploadUtil.ossConfMapper = ossConfMapper;	} 		/**  * 上传文件:去除85这个宽度  * @param muFile 上传文件  * @param req  * @return Map 返回中 key值{0,1,2,oldimg} 0小图 1中图 2大图 oldimg原图  */ public static synchronized Map<String, String> uploadFile(MultipartFile muFile,HttpServletRequest req) { 	Map<String, String> map = null; 	try { 		//查询oss启用状态的配置信息 		OSSConf ossConf=ossConfMapper.findByOssStatus(); 		if(muFile != null && muFile.getSize()>0 && ossConf!=null) { 			//检查上传的图片的大小和扩展名 			if (!UploadImgCommon.checkFileForSpringUpload(muFile)) { 				throw new RuntimeException("上传" + muFile.getOriginalFilename() + LOGGERINFO1); 			} 			//oss类型0本地1阿里云2京东云 			String ossType=ossConf.getOssType(); 			if("0".equals(ossType)){ 				//上传本地 				map = uploadImgLocal.uploadForABCSize(muFile); 			}else if("1".equals(ossType) || "2".equals(ossType)){ 				//上传oss 				map=uploadImgOSS.uploadForABCSize(muFile,ossConf); 			} 		}		} catch (Exception e) {			e.printStackTrace();			LOGGER.error("上传文件失败"+e.getMessage(),e);		}  return map; } }

/** * 上传文件：本地 * @author somnus * */@Component("uploadImgLocal")public class UploadImgLocal {	/** 记录日志对象 */ private static final MyLogger LOGGER = new MyLogger(UploadImgLocal.class); /**获得当前项目访问的地址 */ private static String url; @Resource(name = "SysHelperMapper") private SysHelperMapper sysHelperMapper;  /**  * 上传文件:去除85这个宽度  * 存储原图地址如：http://127.0.0.1:8080:/mall/upload/image/20170804/1501811601145.jpg  * @param muFile  * @return Map 返回中 key值{0,1,2,oldimg} 0小图 1中图 2大图 oldimg原图  */ public Map<String, String> uploadForABCSize(MultipartFile muFile) {  //封装结果集 	Map<String, String> imgMap = new HashMap<String, String>();  //服务器本地保存图片路径  HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();  //获得当前项目访问的地址:http://127.0.0.1:8080  url=UploadImgCommon.getHttpAndPort(request);  //获取上传文件的保存路径:文件拼接地址：服务器本地保存路径+文件名+后缀  String fileNamess = UploadImgCommon.getPicNamePathSuffix();  try {  	File file = new File(fileNamess);  	//转存文件到指定的路径   muFile.transferTo(file);   //获取原图地址   LOGGER.info(UploadImgCommon.LOGGERINFO1 + (url+fileNamess));   //存储原图地址如：/mall/upload/image/20170804/1501811601145.jpg   imgMap.put(UploadImgCommon.OLDIMG, (url+fileNamess));      //图片处理：获取宽度集合，去除85这个宽度[352, 56, 160]   int[] widths = UploadImgCommon.getImgSetOut85(sysHelperMapper.selectImageSet());   //给宽度集合升序排序   UploadImgCommon.sortWidth(widths);//[56,160,352]   //缩放文件   File zoomFile=null;   for(int i = 0; i < widths.length; i++){   	//20171226新优化：将指定尺寸图片存储至本地   	//缩放文件名   	String zoomFileName=UploadImgCommon.picPath + UploadImgCommon.prefix + UploadImgCommon.SYMBOLS + widths[i] + UploadImgCommon.suffix;   	//创建缩放文件   	zoomFile=new File(zoomFileName);   	//转存文件到指定的路径    muFile.transferTo(zoomFile);   	//获取指定尺寸图片地址:大图352中160小56    LOGGER.info(widths[i]+UploadImgCommon.LOGGERINFO2+(url + UploadImgCommon.picPath + UploadImgCommon.prefix + UploadImgCommon.SYMBOLS + widths[i] + UploadImgCommon.suffix));    imgMap.put(i + "", (url + UploadImgCommon.picPath + UploadImgCommon.prefix + UploadImgCommon.SYMBOLS + widths[i] + UploadImgCommon.suffix));   }  } catch (IllegalStateException e) {  	e.printStackTrace();   LOGGER.error(UploadImgCommon.LOGGERINFO3, e);  } catch (IOException e) {  	e.printStackTrace();   LOGGER.error(UploadImgCommon.LOGGERINFO3, e);  } catch (Exception e) {  	e.printStackTrace();   LOGGER.error(UploadImgCommon.LOGGERINFO3, e);  }  return imgMap; }}

package com.qianjiang.util.uploadutil; import java.io.File;import java.io.InputStream;import java.util.Arrays;import java.util.Date;import java.util.HashMap;import java.util.List;import java.util.Properties; import javax.servlet.http.HttpServletRequest; import org.apache.commons.fileupload.FileItem;import org.springframework.web.multipart.MultipartFile; import com.qianjiang.manager.bean.ImageSet;import com.qianjiang.util.MyLogger;import com.qianjiang.util.UtilDate; /** * 文件上传公共方法 * @author somnus */public class UploadImgCommon {	/** 记录日志对象 */ private static final MyLogger LOGGER = new MyLogger(UploadImgCommon.class); /**定义图片*/ protected static final String IMAGE = "image"; /**定义视频*/ protected static final String MEDIA="media"; /**定义图片上传最大限制10MB*/ private static long maxSize = 10 * 1024 * 1024; /**定义视频上传最大限制500MB */ private static long mediaMaxSize= 500 * 1024 * 1024; /**定义允许上传文件扩展名 */ private static HashMap<String, String> extMap = new HashMap<String, String>(); /**文件保存路径 */ protected static String picPath; /** 要保存的文件名 */ protected static String prefix; /**文件后缀 */ protected static String suffix; /**定位宽度集合循环次数*/ protected static final int THREE = 3; /**拼接图片缩放特殊符号*/ protected static final String SYMBOLS="@";  /**图片56缩放*/ protected static final int SMALL = 56; /**设置imgMap中返回小图key值*/ protected static final int SMALLIMG=0; /**原图*/ protected static final String OLDIMG = "oldimg"; protected static final String LOGGERINFO1 = "原图地址："; protected static final String LOGGERINFO2 = "尺寸的图片地址："; protected static final String LOGGERINFO3 = "图片上传，返回key值列表错误"; //本地上传图片properties属性值 protected static final String IMAGEPATH = "IMAGEPATH"; //本地上传视频properties属性值 protected static final String MEDIAPATH = "MEDIAPATH";  /**初始化*/ static { 	//允许图片扩展名  extMap.put(IMAGE, "gif,jpg,jpeg,png,bmp");  //允许视频扩展名  extMap.put(MEDIA, "mp4"); }  /** * 获取上传文件的保存路径 * 文件拼接地址：服务器本地保存路径+文件名+后缀 * @return 文件名（全路径） */ public static String getPicNamePathSuffix() {  String fileName=""; 	try {  	//根据系统当前时间生成上传后保存的文件名   long now = System.currentTimeMillis();   //文件名系统当前时间如1501848484869   prefix = String.valueOf(now);   //文件路径如：/mall/upload/image/20170804/   picPath = getHostAndPort().getProperty(IMAGEPATH) + UtilDate.todayFormatString(new Date()) + "/";   //根据真实路径创建目录文件   File picSaveFile = new File(picPath);  	if(!picSaveFile.exists()){  		 picSaveFile.mkdirs();  	}  	//文件的后缀   suffix = ".jpg";   fileName=picPath + prefix + suffix;   LOGGER.info("创建文件成功，文件名："+fileName);  } catch (Exception e) {  	e.printStackTrace();   LOGGER.error("创建本地文件失败"+e.getMessage(),e);  }  return fileName; }  /**  * 上传视频存储本地服务器  * 获取上传文件的保存名称、服务器本地保存路径、后缀，拼接成文件地址  * @return  */ public static String getVideoNamePathSuffix() { 	String fileName=""; 	try { 		//根据系统当前时间生成上传后保存的文件名  	long now = System.currentTimeMillis();  	//文件名系统当前时间如1501848484869  	prefix = String.valueOf(now);  	//文件路径如：/mall/upload/media/20170804/  	picPath =getHostAndPort().getProperty(MEDIAPATH) + UtilDate.todayFormatString(new Date()) + "/";  	//根据真实路径创建目录文件  	File picSaveFile = new File(picPath);  	if(!picSaveFile.exists()){  		 picSaveFile.mkdirs();  	}  	//文件的后缀(默认为MP4格式)  	UploadImgCommon.suffix = ".mp4";  	fileName=picPath + prefix + suffix;  	LOGGER.info("创建视频文件成功，文件名："+fileName);  } catch (Exception e) {  	e.printStackTrace();   LOGGER.error("创建上传视频本地服务器地址失败:"+e.getLocalizedMessage(), e);  }  return fileName; }  /**  * 获取宽度集合  * @return  */ public static int[] getImgSet(List<ImageSet> imgSet) {  int[] widths = new int[imgSet.size()];  for (int i = 0; i < imgSet.size(); i++) {   widths[i] = Integer.parseInt(imgSet.get(i).getRuleWidth());  }  return widths; }  /**  * 获取宽度集合，去除85这个宽度  * @param imgSet   * @return  */ public static int[] getImgSetOut85(List<ImageSet> imgSet) {  int[] widths = new int[THREE];  for (int i = 0; i < imgSet.size(); i++) {   if ("85".equals(imgSet.get(i).getRuleWidth())) {    if (i < 3) {     i--;    }    continue;   }   widths[i] = Integer.parseInt(imgSet.get(i).getRuleWidth());  }  return widths; }  /**  * 给宽度集合升序排序  * @param widths  */ public static void sortWidth(int[] widths) {  for (int i = 0; i < widths.length; i++) {   for (int j = i + 1; j < widths.length; j++) {    int temp;    if (widths[i] > widths[j]) {     temp = widths[i];     widths[i] = widths[j];     widths[j] = temp;    }   }  } }  /**  * 获得当前项目访问的地址   * 比如http://127.0.0.1:8080  * @param request  * @return 返回当前项目访问的地址  */ public static String getHttpAndPort(HttpServletRequest request) {  return request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort(); }  /**  * 读取配置文件信息  * @return  */ public static Properties getHostAndPort() {  Properties p = new Properties();  try{  	InputStream inputStream = UploadImgCommon.class.getClassLoader().getResourceAsStream("config/image.properties");   p.load(inputStream);  }catch(Exception e){  	e.printStackTrace();   LOGGER.error("读取Properties属性文件错误"+e.getMessage(),e);  }  return p; }  /**  * SpringMVC上传：验证上传图片的大小和扩展名  * @param muFile 上传文件  * @return 验证通过返回true，否则返回false  */ public static boolean checkFileForSpringUpload(MultipartFile muFile) {  boolean bool = true;  // 检查文件大小  if (muFile.getSize() > maxSize) {   LOGGER.error("=============>上传" + muFile.getOriginalFilename() + "文件大小超过限制");   bool = false;   return bool;  }  String fileName = muFile.getOriginalFilename();  //检查扩展名  String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();  if (!Arrays.<String> asList(extMap.get(IMAGE).split(",")).contains(fileExt)) {   LOGGER.error("上传文件" + muFile.getOriginalFilename() + "扩展名是不允许的扩展名。/n只允许" + extMap.get(IMAGE) + "格式。");   bool = false;   return bool;  }  return bool; }  /**  * js引入Kindeditor插件实现文件上传  * 验证上传文件大小和扩展名  * @param file 上传文件  * @return 验证通过返回true，否则返回false  */ public static boolean checkFileAndMedia(FileItem file,String dirName) {  boolean bool = true;  //文件大小 	long fileSize = file.getSize(); 	//文件名 	String fileName = file.getName();   	//检查文件大小		if(fileSize > maxSize && fileSize > mediaMaxSize){			 LOGGER.error("=============>上传" + file.getFieldName() + "文件大小超过限制");			 bool = false;			 return bool;		} 			//检查扩展名		String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();		if(!Arrays.<String>asList(extMap.get(dirName).split(",")).contains(fileExt)){			 LOGGER.error("上传文件" + file.getFieldName() + "扩展名是不允许的扩展名。/n只允许" + extMap.get(dirName) + "格式。");			 bool = false;			 return bool;		}		  return bool; }   }