在工作中要求将图片上传至本地，如下代码将介绍如何将图片上传至本地
准备工作：
环境：eclipse4.5-x64,jdk1.7-x64,maven3
tomcat服务器配置图片上传映射：
上传至本地服务器配置文件：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; } } |
类：uploadimglocal.java
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/** * 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; }} |
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; } } |
上传成功后控制台打印信息：
上传成功后前台展示效果：
原文链接：https://blog.csdn.net/u014079773/article/details/79763325
