image.wxml：
设置两个button,一个进行选择选择图片，另一个进行发布
<form bindsubmit="formSubmit" id='2' bindreset="formReset"> <view class="big-logos"> <button bindtap="upimg">拍照</button> <block wx:for="{{img_arr}}"> <view class='logoinfo'> <image src='{{item}}'></image> </view> </block> </view> <button class='btn' formType="submit">发布</button> </form>
image.js:(formData传递参数)，可以上传多张图片，但是有个bug，每次上传都要调一次接口，有好的解决方案，请指教
var adds = {};Page({data: {img_arr: [],formdata: '',},formSubmit: function (e) {// var id = e.target.id// adds = e.detail.value;// adds.program_id = app.jtappid// adds.openid = app._openid// adds.zx_info_id = this.data.zx_info_idthis.upload();console.log(adds);},upload: function () {var that = thisvar imgfile;for (var i = 0; i < this.data.img_arr.length; i++) {//循环遍历图片 wx.uploadFile({url:'',//自己的接口地址filePath: that.data.img_arr[i],name: 'content',header: {"Content-Type": "multipart/form-data",'accept': 'application/json','Authorization': 'okgoodit'//若有token，此处换上你的token，没有的话省略},formData:({//上传图片所要携带的参数userName:"";}),success: function (res) {console.log(res)if (res) {console.log("返回的参数信息" + res.data)wx.showToast({title: '已提交发布！',duration: 3000});}}})}this.setData({username: 'CMOS180404',password: 'ecb01ff6-2e5c-11e8-b467-0ed5f89f718b'})},upimg: function () {var that = this;if (this.data.img_arr.length < 3) {wx.chooseImage({sizeType: ['original', 'compressed'], // 可以指定是原图还是压缩图，默认二者都有sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机，默认二者都有success: function (res) {that.setData({img_arr: that.data.img_arr.concat(res.tempFilePaths)});}})} else {wx.showToast({title: '最多上传三张图片',icon: 'loading',duration: 3000});}}, })
//Java后台接收并解析
package com.lovepet.pet.biz.controller;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONArray;import com.mon.Result;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.multipart.MultipartFile;import org.springframework.web.multipart.support.StandardMultipartHttpServletRequest;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.File;import java.io.FileOutputStream;import java.io.OutputStream;import java.io.PrintWriter;import java.util.HashMap;import java.util.Iterator;import java.util.UUID;/*** 图片上传** @author FanChen* @since 6月1日 上午12:46:29*/@Controller@RequestMapping("/upload")public class UploadController {private static final Logger logger = LoggerFactory.getLogger(UploadController.class);@RequestMapping("/picture")public void uploadPicture(HttpServletRequest request, HttpServletResponse response) throws Exception {Result result = new Result();//获取文件需要上传到的路径File directory = new File("..");String path = directory.getCanonicalPath() + "\\upload\\";// 判断存放上传文件的目录是否存在（不存在则创建）File dir = new File(path);if (!dir.exists()) {dir.mkdir();}logger.debug("path=" + path);request.setCharacterEncoding("utf-8"); //设置编码try {StandardMultipartHttpServletRequest req = (StandardMultipartHttpServletRequest) request;//获取formdata的值Iterator<String> iterator = req.getFileNames();String username=request.getParameter("username");String password=request.getParameter("password");String timedata=request.getParameter("timedata");while (iterator.hasNext()) {MultipartFile file=req.getFile(iterator.next());//真正写到磁盘上String uuid=UUID.randomUUID().toString().replace("-","");String newName=uuid+"."+"jpg";File file1=new File(path+newName);OutputStream out=new FileOutputStream(file1);out.write(file.getBytes());out.close();}} catch (Exception e) {logger.error("", e);}result.setValue(jsonArray);PrintWriter printWriter = response.getWriter();response.setContentType("application/json");response.setCharacterEncoding("utf-8");printWriter.write(JSON.toJSONString(result));printWriter.flush();}}
本篇文章借鉴了很多前辈的经验，本人也就是个菜鸟，如果有些地方写的不对，请多多指教
