使用方法：

npm install vue-image-crop-upload 加载

image.png
image.png

<div id="app">
    <a class="btn" @click="toggleShow">设置头像</a>
    <my-upload field="img"
        :width="300"
        :height="300"
        url="/upload"       
         /*url 若是vue项目 前后端分离 要配好代理
        如'/file':{
         target:'http://localhost:9001/file',
         changeOrigin:true,//允许跨域
         pathRewrite: {
           '^/file':'/'
         },
        },*/
        :params="params"    //格式为{k:v}
        :headers="headers"
        :value.sync="show"
        img-format="png"></my-upload> //最终得到的图片格式
    <img :src="imgDataUrl">
</div>

<script>
    import 'babel-polyfill'; // es6 shim
    import Vue from 'vue';
    import myUpload from 'vue-image-crop-upload/upload-1.vue';

    new Vue({
        el: '#app',
        data: {
            show: true,
            params: {
                token: '123456798',
                name: 'avatar'
            },
            headers: {
                smail: '*_~'
            },
            imgDataUrl: '' // the datebase64 url of created image
        },
        components: {
            'my-upload': myUpload
        },
        methods: {
            toggleShow() {
                this.show = !this.show;
            }
        },
        events: {
            /**
             * crop success
             *
             * [param] imgDataUrl
             * [param] field
             */
            cropSuccess(imgDataUrl, field){
                console.log('-------- crop success --------');
                this.imgDataUrl = imgDataUrl;
            },
            /**
             * upload success
             *
             * [param] jsonData   服务器返回数据，已进行json转码
             * [param] field
             */
            cropUploadSuccess(jsonData, field){
                console.log('-------- upload success --------');
                console.log(jsonData);
                console.log('field: ' + field);
            },
            /**
             * upload fail
             *
             * [param] status    server api return error status, like 500
             * [param] field
             */
            cropUploadFail(status, field){
                console.log('-------- upload fail --------');
                console.log(status);
                console.log('field: ' + field);
            }
        }
    });

</script>

写代码时遇到的问题

1.前后端都配好了 上传不进入控制器
打印前端上传错误，如下

image.png

最后定位在了mockjs这个文件 有冲突
所以进入package.json 删除mockjs 并重新install即可

2.要使用这个上传控制器 vue需要配置代理
如

config下
//图片代理访问
      '/img':{
        target:'http://localhost:8081/images', 
        changeOrigin:true,//允许跨域
        pathRewrite: {
          '^/img':''
        }
      },

若使用nginx部署 也需要添加代理配置

官网链接：

http://npm.taobao.org/package/vue-image-crop-upload-2

近期项目使用image源码：
1.效果如图： 鼠标悬浮 有个小特效 后面随即一个祝福成语 小彩蛋吧

image.png

首先是 小特效

<template>
  <div :style="{zIndex:zIndex,height:height,width:width}" class="pan-item">
    <div class="pan-info">
      <div class="pan-info-roles-container">
          <span style="font-size:10px;">{{blessing()}}</span>
        <slot/>
      </div>
    </div>
    <img :src="image" onerror="this.src='../../../static/img/default_portrait_128.png'" class="pan-thumb">
  </div>
</template>

<script>
export default {
  name: 'PanThumb',
  props: {
    image: {
      type: String,
      required: true,
    },
    zIndex: {
      type: Number,
      default: 1
    },
    width: {
      type: String,
      default: '150px'
    },
    height: {
      type: String,
      default: '150px'
    }
  },
  methods:{
      blessing(){
        let text =  parseInt(Math.random()*11);
        console.log('text :', text);
        let bless = '';
        switch(text){
            case 0: bless = '财源广进';break;
            case 1: bless = '一帆风顺';break;
            case 2: bless = '身体健康';break;
            case 3: bless = '万事如意';break;
            case 4: bless = '心想事成';break;
            case 5: bless = '工作顺利';break;
            case 6: bless = '幸福安康';break;
            case 7: bless = '蒸蒸日上';break;
            case 8: bless = '欣欣向荣';break;
            case 9: bless = '恭喜发财';break;
            case 10: bless = '福如东海';break;
        }
        return bless;
      }
  }
}
</script>

<style scoped>
.pan-item {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  display: inline-block;
  position: relative;
  cursor: default;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.pan-info-roles-container {
  padding: 20px;
  text-align: center;
}

.pan-thumb {
  width: 100%;
  height: 100%;
  background-size: 100%;
  border-radius: 50%;
  overflow: hidden;
  position: absolute;
  transform-origin: 95% 40%;
  transition: all 0.3s ease-in-out;
}

.pan-thumb:after {
  content: '';
  width: 8px;
  height: 8px;
  position: absolute;
  border-radius: 50%;
  top: 40%;
  left: 95%;
  margin: -4px 0 0 -4px;
  background: radial-gradient(ellipse at center, rgba(14, 14, 14, 1) 0%, rgba(125, 126, 125, 1) 100%);
  box-shadow: 0 0 1px rgba(255, 255, 255, 0.9);
}

.pan-info {
  position: absolute;
  width: inherit;
  height: inherit;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: inset 0 0 0 5px rgba(0, 0, 0, 0.05);
}

.pan-info h3 {
  color: #fff;
  text-transform: uppercase;
  position: relative;
  letter-spacing: 2px;
  font-size: 18px;
  margin: 0 60px;
  padding: 22px 0 0 0;
  height: 85px;
  font-family: 'Open Sans', Arial, sans-serif;
  text-shadow: 0 0 1px #fff, 0 1px 2px rgba(0, 0, 0, 0.3);
}

.pan-info p {
  color: #fff;
  padding: 10px 5px;
  font-style: italic;
  margin: 0 30px;
  font-size: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.5);
}

.pan-info p a {
  display: block;
  color: #333;
  width: 80px;
  height: 80px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: #fff;
  font-style: normal;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 9px;
  letter-spacing: 1px;
  padding-top: 24px;
  margin: 7px auto 0;
  font-family: 'Open Sans', Arial, sans-serif;
  opacity: 0;
  transition: transform 0.3s ease-in-out 0.2s, opacity 0.3s ease-in-out 0.2s, background 0.2s linear 0s;
  transform: translateX(60px) rotate(90deg);
}

.pan-info p a:hover {
  background: rgba(255, 255, 255, 0.5);
}

.pan-item:hover .pan-thumb {
  transform: rotate(-110deg);
}

.pan-item:hover .pan-info p a {
  opacity: 1;
  transform: translateX(0px) rotate(0deg);
}
</style>

其次 上传代码

<template>
    <div>
        <el-upload
        ref="upload"
        action="/file/uploadImgs"
        list-type="picture-card"
        :on-preview="handlePictureCardPreview"
        :before-remove="handleRemove"
        :on-success="handleSuccess"
        :on-error="handleError"
        :limit="imglimit"
        :auto-upload="autoupload"
        :file-list="filelist"
        :on-exceed="handleExceed"
        :before-upload="beforeUpload"
        >
        <i class="el-icon-plus"></i>
        </el-upload>
        <el-dialog append-to-body :visible.sync="dialogVisible">
            <div style="z-index:999">
              <img width="100%" :src="dialogImageUrl" alt="">
            </div>
        </el-dialog>
        <el-button v-if="!autoupload" style="margin-left: 10px;" size="small" type="success" @click="submitUpload">上传到服务器</el-button>
    </div>
</template>
<script>
  export default {
    props:{
      fromfilelist:Array,
      imglimit:Number,
      autoupload:Boolean
    },
    data() {
      return {
        dialogImageUrl: '',
        dialogVisible: false,
        filelist:[],
        uploadlist:new Set()
      };
    },
    mounted(){
      if(this.fromfilelist){
        this.initFileList(this.fromfilelist);
      }
    },
    methods: {
      initFileList(val){
        this.filelist = [];
        this.filelist = Object.assign([],val);
        this.filelist.map(item => {
          this.uploadlist.add(item.name);
        })
      },
      submitUpload() {
        this.$refs.upload.submit();
      },
      beforeUpload(file){
        var testmsg=file.name.substring(file.name.lastIndexOf('.')+1)       
                const extension = testmsg === 'jpg'
                const extension2 = testmsg === 'png'
                const isLt2M = file.size / 1024 / 1024 < 5     //这里做文件大小限制
                if(!extension && !extension2) {
                    this.$message({
                        message: '上传文件只能是 jpg、png格式!',
                        type: 'warning'
                    });
                }
                if(!isLt2M) {
                    this.$message({
                        message: '上传文件大小不能超过 5MB!',
                        type: 'warning'
                    });
                }
                return extension || extension2 && isLt2M
      },
      handleError(err, file, fileList){
        this.$message.error("文件上传失败，请稍后再试！");
      },
      handleExceed(files, fileList){
        this.$message.error("文件超出个数限制,最大上传数为"+this.imglimit);
      },
      handleSuccess(response, file, fileList){
        response.map(item => {
          this.uploadlist.add(item);
        })
      },
      handleRemove(file, fileList) {
        let filename;
        return this.$confirm(`确定移除 ${file.name}？`).then(()=>{
          if(file.response){
            filename  = file.response[0];
          }else{
            filename  = file.name;
          }
          let newname = filename;
          let flag = this.fromfilelist.some(s => {
            return s.name == newname.replace("-test","");
          })
          if(flag){
            filename = filename.replace("-test","");
          }
          this.uploadlist.delete(filename);
        })
      },
      handlePictureCardPreview(file) {
        this.dialogImageUrl = file.url;
        this.dialogVisible = true;
      }
    }
  }
</script>