在工作中要求將圖片上傳至本地，如下代碼將介紹如何將圖片上傳至本地
準(zhǔn)備工作：
環(huán)境：eclipse4.5-x64,jdk1.7-x64,maven3
tomcat服務(wù)器配置圖片上傳映射：
上傳至本地服務(wù)器配置文件：image.properties
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#\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 |
controlle：uploadutil.java
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/** * 文件上傳工具類 * @author sang */@controllerpublic class uploadutil { /** 記錄日志對象 */ private static final mylogger logger = new mylogger(uploadutil.class); /**圖片格式錯誤信息*/ private static final string loggerinfo1 = "的圖片不符合限制"; /** * 備注： * uploadimglocal,uploadimgoss,ossconfmapper均是靜態(tài)成員變量 * 則添加注解注意只能用@autowired且get,set方法不能有static否則報錯 * */ /**文件上傳：本地,注意*/ private static uploadimglocal uploadimglocal; /**文件上傳：oss對象 */ private static uploadimgoss uploadimgoss; /**oss配置查詢 */ 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; } /** * 上傳文件:去除85這個寬度 * @param mufile 上傳文件 * @param req * @return map 返回中 key值{0,1,2,oldimg} 0小圖 1中圖 2大圖 oldimg原圖 */ public static synchronized map<string, string> uploadfile(multipartfile mufile,httpservletrequest req) { map<string, string> map = null; try { //查詢oss啟用狀態(tài)的配置信息 ossconf ossconf=ossconfmapper.findbyossstatus(); if(mufile != null && mufile.getsize()>0 && ossconf!=null) { //檢查上傳的圖片的大小和擴展名 if (!uploadimgcommon.checkfileforspringupload(mufile)) { throw new runtimeexception("上傳" + mufile.getoriginalfilename() + loggerinfo1); } //oss類型0本地1阿里云2京東云 string osstype=ossconf.getosstype(); if("0".equals(osstype)){ //上傳本地 map = uploadimglocal.uploadforabcsize(mufile); }else if("1".equals(osstype) || "2".equals(osstype)){ //上傳oss map=uploadimgoss.uploadforabcsize(mufile,ossconf); } } } catch (exception e) { e.printstacktrace(); logger.error("上傳文件失敗"+e.getmessage(),e); } return map; } } |
類：uploadimglocal.java
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/** * 上傳文件：本地 * @author somnus * */@component("uploadimglocal")public class uploadimglocal { /** 記錄日志對象 */ private static final mylogger logger = new mylogger(uploadimglocal.class); /**獲得當(dāng)前項目訪問的地址 */ private static string url; @resource(name = "syshelpermapper") private syshelpermapper syshelpermapper; /** * 上傳文件:去除85這個寬度 * 存儲原圖地址如：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小圖 1中圖 2大圖 oldimg原圖 */ public map<string, string> uploadforabcsize(multipartfile mufile) { //封裝結(jié)果集 map<string, string> imgmap = new hashmap<string, string>(); //服務(wù)器本地保存圖片路徑 httpservletrequest request = ((servletrequestattributes) requestcontextholder.getrequestattributes()).getrequest(); //獲得當(dāng)前項目訪問的地址:http://127.0.0.1:8080 url=uploadimgcommon.gethttpandport(request); //獲取上傳文件的保存路徑:文件拼接地址：服務(wù)器本地保存路徑+文件名+后綴 string filenamess = uploadimgcommon.getpicnamepathsuffix(); try { file file = new file(filenamess); //轉(zhuǎn)存文件到指定的路徑 mufile.transferto(file); //獲取原圖地址 logger.info(uploadimgcommon.loggerinfo1 + (url+filenamess)); //存儲原圖地址如：/mall/upload/image/20170804/1501811601145.jpg imgmap.put(uploadimgcommon.oldimg, (url+filenamess)); //圖片處理：獲取寬度集合，去除85這個寬度[352, 56, 160] int[] widths = uploadimgcommon.getimgsetout85(syshelpermapper.selectimageset()); //給寬度集合升序排序 uploadimgcommon.sortwidth(widths);//[56,160,352] //縮放文件 file zoomfile=null; for(int i = 0; i < widths.length; i++){ //20171226新優(yōu)化：將指定尺寸圖片存儲至本地 //縮放文件名 string zoomfilename=uploadimgcommon.picpath + uploadimgcommon.prefix + uploadimgcommon.symbols + widths[i] + uploadimgcommon.suffix; //創(chuàng)建縮放文件 zoomfile=new file(zoomfilename); //轉(zhuǎn)存文件到指定的路徑 mufile.transferto(zoomfile); //獲取指定尺寸圖片地址:大圖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; }} |
公共方法：uploadimgcommon.java
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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; /** * 文件上傳公共方法 * @author somnus */public class uploadimgcommon { /** 記錄日志對象 */ private static final mylogger logger = new mylogger(uploadimgcommon.class); /**定義圖片*/ protected static final string image = "image"; /**定義視頻*/ protected static final string media="media"; /**定義圖片上傳最大限制10mb*/ private static long maxsize = 10 * 1024 * 1024; /**定義視頻上傳最大限制500mb */ private static long mediamaxsize= 500 * 1024 * 1024; /**定義允許上傳文件擴展名 */ private static hashmap<string, string> extmap = new hashmap<string, string>(); /**文件保存路徑 */ protected static string picpath; /** 要保存的文件名 */ protected static string prefix; /**文件后綴 */ protected static string suffix; /**定位寬度集合循環(huán)次數(shù)*/ protected static final int three = 3; /**拼接圖片縮放特殊符號*/ protected static final string symbols="@"; /**圖片56縮放*/ protected static final int small = 56; /**設(shè)置imgmap中返回小圖key值*/ protected static final int smallimg=0; /**原圖*/ protected static final string oldimg = "oldimg"; protected static final string loggerinfo1 = "原圖地址："; protected static final string loggerinfo2 = "尺寸的圖片地址："; protected static final string loggerinfo3 = "圖片上傳，返回key值列表錯誤"; //本地上傳圖片properties屬性值 protected static final string imagepath = "imagepath"; //本地上傳視頻properties屬性值 protected static final string mediapath = "mediapath"; /**初始化*/ static { //允許圖片擴展名 extmap.put(image, "gif,jpg,jpeg,png,bmp"); //允許視頻擴展名 extmap.put(media, "mp4"); } /** * 獲取上傳文件的保存路徑 * 文件拼接地址：服務(wù)器本地保存路徑+文件名+后綴 * @return 文件名（全路徑） */ public static string getpicnamepathsuffix() { string filename=""; try { //根據(jù)系統(tǒng)當(dāng)前時間生成上傳后保存的文件名 long now = system.currenttimemillis(); //文件名系統(tǒng)當(dāng)前時間如1501848484869 prefix = string.valueof(now); //文件路徑如：/mall/upload/image/20170804/ picpath = gethostandport().getproperty(imagepath) + utildate.todayformatstring(new date()) + "/"; //根據(jù)真實路徑創(chuàng)建目錄文件 file picsavefile = new file(picpath); if(!picsavefile.exists()){ picsavefile.mkdirs(); } //文件的后綴 suffix = ".jpg"; filename=picpath + prefix + suffix; logger.info("創(chuàng)建文件成功，文件名："+filename); } catch (exception e) { e.printstacktrace(); logger.error("創(chuàng)建本地文件失敗"+e.getmessage(),e); } return filename; } /** * 上傳視頻存儲本地服務(wù)器 * 獲取上傳文件的保存名稱、服務(wù)器本地保存路徑、后綴，拼接成文件地址 * @return */ public static string getvideonamepathsuffix() { string filename=""; try { //根據(jù)系統(tǒng)當(dāng)前時間生成上傳后保存的文件名 long now = system.currenttimemillis(); //文件名系統(tǒng)當(dāng)前時間如1501848484869 prefix = string.valueof(now); //文件路徑如：/mall/upload/media/20170804/ picpath =gethostandport().getproperty(mediapath) + utildate.todayformatstring(new date()) + "/"; //根據(jù)真實路徑創(chuàng)建目錄文件 file picsavefile = new file(picpath); if(!picsavefile.exists()){ picsavefile.mkdirs(); } //文件的后綴(默認為mp4格式) uploadimgcommon.suffix = ".mp4"; filename=picpath + prefix + suffix; logger.info("創(chuàng)建視頻文件成功，文件名："+filename); } catch (exception e) { e.printstacktrace(); logger.error("創(chuàng)建上傳視頻本地服務(wù)器地址失敗:"+e.getlocalizedmessage(), e); } return filename; } /** * 獲取寬度集合 * @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; } /** * 獲取寬度集合，去除85這個寬度 * @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; } /** * 給寬度集合升序排序 * @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; } } } } /** * 獲得當(dāng)前項目訪問的地址 * 比如http://127.0.0.1:8080 * @param request * @return 返回當(dāng)前項目訪問的地址 */ public static string gethttpandport(httpservletrequest request) { return request.getscheme() + "://" + request.getservername() + ":" + request.getserverport(); } /** * 讀取配置文件信息 * @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("讀取properties屬性文件錯誤"+e.getmessage(),e); } return p; } /** * springmvc上傳：驗證上傳圖片的大小和擴展名 * @param mufile 上傳文件 * @return 驗證通過返回true，否則返回false */ public static boolean checkfileforspringupload(multipartfile mufile) { boolean bool = true; // 檢查文件大小 if (mufile.getsize() > maxsize) { logger.error("=============>上傳" + mufile.getoriginalfilename() + "文件大小超過限制"); bool = false; return bool; } string filename = mufile.getoriginalfilename(); //檢查擴展名 string fileext = filename.substring(filename.lastindexof(".") + 1).tolowercase(); if (!arrays.<string> aslist(extmap.get(image).split(",")).contains(fileext)) { logger.error("上傳文件" + mufile.getoriginalfilename() + "擴展名是不允許的擴展名。\n只允許" + extmap.get(image) + "格式。"); bool = false; return bool; } return bool; } /** * js引入kindeditor插件實現(xiàn)文件上傳 * 驗證上傳文件大小和擴展名 * @param file 上傳文件 * @return 驗證通過返回true，否則返回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(); //檢查文件大小 if(filesize > maxsize && filesize > mediamaxsize){ logger.error("=============>上傳" + file.getfieldname() + "文件大小超過限制"); bool = false; return bool; } //檢查擴展名 string fileext = filename.substring(filename.lastindexof(".") + 1).tolowercase(); if(!arrays.<string>aslist(extmap.get(dirname).split(",")).contains(fileext)){ logger.error("上傳文件" + file.getfieldname() + "擴展名是不允許的擴展名。\n只允許" + extmap.get(dirname) + "格式。"); bool = false; return bool; } return bool; } } |
上傳成功后控制臺打印信息：
上傳成功后前臺展示效果：
原文鏈接：https://blog.csdn.net/u014079773/article/details/79763325
