package com.isd.controller;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.ModelAndView;

import com.isd.pojo.Article;
import com.isd.service.ArticleService;

@Controller
public class ArticleController {
        //新增文章保存
        @Autowired
        private ArticleService articleService;
    
        //用于插入是否成功
        public void checkUpIsOk(int i,HttpServletResponse response) throws IOException{
            response.setHeader("content-type", "text/html;charset=UTF-8");
            response.setCharacterEncoding("UTF-8");
            PrintWriter out = response.getWriter();//获取PrintWriter输出流
            if(i==0){
                out.write("插入失败");
                out.write("<script>setTimeout(function(){"+
                        "history.go(-1);"+ 
                "},500) </script>");
                out.close();
            }else{
                out.write("插入成功");
                out.write("<script>setTimeout(function(){"+
                        "location.href=http://www.mamicode.com/‘goList‘"+ 
                "},500) </script>");
                out.close();
            }
        }
    
       //新增文章保存
        @RequestMapping("addArticle")
        public void addArticle(HttpSession session,HttpServletResponse response,Article record,MultipartFile image) throws IllegalStateException, IOException {
            //如果不传图片，那么则用默认的图片
            if(record.getUrl()==null||record.getUrl().equals("")){
                record.setUrl("default.png");
            }
            if(record.getUrl2()==null||record.getUrl2().equals("")){
                record.setUrl2("default.png");
            }
            int i=articleService.insert(record);
            checkUpIsOk(i,response);
        }
        
        //文章列表跳转
        @RequestMapping("goList")
        public ModelAndView goList(){
            List<Article> artall=articleService.selectAll();
            System.out.println(artall.size());
            ModelAndView mv=new ModelAndView();
            mv.addObject("artall",artall);
            mv.setViewName("list");
            return mv;
        }
        
        //新增文章跳转
        @RequestMapping("goAdd")
        public String goAdd(){
            return "add";
        }
        
        //uploadFile
        @ResponseBody
        @RequestMapping("uploadFile")
        public  Map<String,Object> uploadFile(HttpSession session,MultipartFile myfile) throws IllegalStateException, IOException{
            //原始名称  
            String oldFileName = myfile.getOriginalFilename(); //获取上传文件的原名 
            //存储图片的物理路径  
            String file_path = session.getServletContext().getRealPath("WEB-INF/static/upload");
           
           //上传图片  
            if(myfile!=null && oldFileName!=null && oldFileName.length()>0){
                //新的图片名称  
                String newFileName = UUID.randomUUID() + oldFileName.substring(oldFileName.lastIndexOf("."));  
                //新图片  
                File newFile = new File(file_path+"/"+newFileName);  
                //将内存中的数据写入磁盘  
                myfile.transferTo(newFile);
                //将新图片名称返回到前端
                Map<String,Object> map=new HashMap<String,Object>();
                map.put("success", "成功啦");
                map.put("url",newFileName);
                return  map;
            }else{
                Map<String,Object> map=new HashMap<String,Object>();
                map.put("error","图片不合法");
                return map;
            }
        }
}

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<html>
    <head>
        <meta charset="utf-8">
        <title>图片上传</title>
        <!-- jq -->
        <script type="text/javascript" src="<%=basePath%>static/plugs/jquery-3.1.1.min.js"></script>
        
        <!-- bootstrap -->
        <link rel="stylesheet" href="<%=basePath%>static/plugs/bootstrap/css/bootstrap.min.css">
        <script type="text/javascript" src="<%=basePath%>static/plugs/bootstrap/js/bootstrap.min.js"></script>
        
        <!-- 图片上传即使预览插件 -->
        <link rel="stylesheet" href="<%=basePath%>static/plugs/bootstrap-fileinput/css/fileinput.min.css">
        <script type="text/javascript" src="<%=basePath%>static/plugs/bootstrap-fileinput/js/fileinput.min.js"></script>
        <script type="text/javascript" src="<%=basePath%>static/plugs/bootstrap-fileinput/js/locales/zh.js"></script>
        
        <style>
            .container{padding-top:60px}
        </style>
    </head>
    <body>
        <div class="container">
            <div class="row">
                <div class="col-sm-6 col-sm-offset-3">
                    <form class="form-horizontal"  role="form" method="post"  action="<%=basePath%>addArticle"  enctype="multipart/form-data" >
                        <div class="form-group">
                            <label class="col-sm-2 control-label">描述</label>
                            <div class="col-sm-10">
                                <input type="text" name="describ" class="col-sm-10 form-control"   placeholder="请描述">
                            </div>
                        </div>
                        <div class="form-group">
                            <label class="col-sm-2 control-label">缩略图</label>
                            <div class="col-sm-10">
                                <input type="file" name="myfile" data-ref="url" class="col-sm-10 myfile" value=""/>
                                <input type="hidden" name="url" value="">
                            </div>
                        </div>
                        <div class="form-group">
                            <label class="col-sm-2 control-label">封面</label>
                            <div class="col-sm-10">
                                <input type="file" name="myfile" data-ref="url2" class="col-sm-10 myfile" value=""/>
                                <input type="hidden" name="url2" value="">
                            </div>
                        </div>
                        <button type="submit" class="btn btn-default col-sm-2 col-sm-offset-4">提交</button>
                    </form>
                </div>
            </div>
        </div>
    
        <script>
            $(".myfile").fileinput({
                uploadUrl:"<%=basePath%>uploadFile",//上传的地址
                uploadAsync:true, //默认异步上传
                showUpload: false, //是否显示上传按钮,跟随文本框的那个
                showRemove : false, //显示移除按钮,跟随文本框的那个
                showCaption: true,//是否显示标题,就是那个文本框
                showPreview : true, //是否显示预览,不写默认为true
                dropZoneEnabled: false,//是否显示拖拽区域，默认不写为true，但是会占用很大区域
                //minImageWidth: 50, //图片的最小宽度
                //minImageHeight: 50,//图片的最小高度
                //maxImageWidth: 1000,//图片的最大宽度
                //maxImageHeight: 1000,//图片的最大高度
                //maxFileSize: 0,//单位为kb，如果为0表示不限制文件大小
                //minFileCount: 0,
                 maxFileCount: 1, //表示允许同时上传的最大文件个数
                 enctype: ‘multipart/form-data‘,
                 validateInitialCount:true,
                 previewFileIcon: "<i class=‘glyphicon glyphicon-king‘></i>",
                 msgFilesTooMany: "选择上传的文件数量({n}) 超过允许的最大数值{m}！",
                 allowedFileTypes: [‘image‘],//配置允许文件上传的类型
                 allowedPreviewTypes : [ ‘image‘ ],//配置所有的被预览文件类型
                 allowedPreviewMimeTypes : [ ‘jpg‘, ‘png‘, ‘gif‘ ],//控制被预览的所有mime类型
                 language : ‘zh‘
            })
            //异步上传返回结果处理
            $(‘.myfile‘).on(‘fileerror‘, function(event, data, msg) {
                console.log("fileerror");
                console.log(data);
            });
            //异步上传返回结果处理
            $(".myfile").on("fileuploaded", function (event, data, previewId, index) {
                console.log("fileuploaded");
                var ref=$(this).attr("data-ref");
                $("input[name=‘"+ref+"‘]").val(data.response.url);

            });

            //同步上传错误处理
            $(‘.myfile‘).on(‘filebatchuploaderror‘, function(event, data, msg) {
                console.log("filebatchuploaderror");
                console.log(data);
            });
            
            //同步上传返回结果处理
            $(".myfile").on("filebatchuploadsuccess", function (event, data, previewId, index) {
                console.log("filebatchuploadsuccess");
                console.log(data);
            });

            //上传前
            $(‘.myfile‘).on(‘filepreupload‘, function(event, data, previewId, index) {
                console.log("filepreupload");
            });        
        </script>
    </body>
</html>