element ui +spring boot + 阿里云oss对象存储 实现文件用户头像上传与在线修改

数据库里面存放的是头像的网络地址
阿里云购买oss对象存储、配置bucket、以及跨域问题



1、安装阿里云oss

npm install ali-oss

2、使用element-ui 默认的 upload组件，但是要重写http-request 方法
templeate部分：

    <el-upload
            :show-file-list="false"
            :http-request="fnUploadRequest"
            :on-success="handleAvatarSuccess"
            :before-upload="beforeAvatarUpload">
        <img v-if="imageUrl" :src="imageUrl" class="avatar" alt="">
        <i v-else class="el-icon-plus avatar-uploader-icon"></i>
    </el-upload>

3、script 使用oss、配置oss的连接

 const OSS = require('ali-oss');
  const client= new OSS({
  accessKeyId: '',  // 查看你自己的阿里云KEY
  accessKeySecret: '', // 查看自己的阿里云KEYSECRET
  bucket: '', // 你的 OSS bucket 名称
  region: '', // bucket 所在地址，我的是 华东2 杭州
  cname:true, // 开启自定义域名上传
  endpoint:"" // 自己的域名
  });

4、核心技术

//图片上传成功回调
      handleAvatarSuccess(res) {
        if (res) this.imageUrl = res.url
      },
      beforeAvatarUpload(file) { 
        const isJPG = file.type === 'image/png';
        const isLt2M = file.size / 1024 / 1024 < 2;
        if (!isJPG) {
          this.$message.error('上传头像图片只能是 JPG 格式!');
        }
        if (!isLt2M) {
          this.$message.error('上传头像图片大小不能超过 2MB!');
          }
        return isJPG && isLt2M;
      },
      async fnUploadRequest(options) {
        try {
            let file = options.file; // 拿到 file
            let fileName = file.name.substr(0,file.name.lastIndexOf('.'))
            let date = new Date().getTime()
            let fileNames = `${date}_${fileName}` // 拼接文件名，保证唯一，这里使用时间戳+原文件名
            // 上传文件,这里是上传到OSS的 uploads文件夹下
            client.put("headerimages/"+fileNames, file).then(res=>{
                if (res.res.statusCode === 200) {                        
                  options.onSuccess(res)
                }else {
                  options.onError("上传失败")
                }
               })
            }catch (e) {
                 options.onError("上传失败")
            }        
      },
      init (id) {
        this.dataForm.id = id || 0
        this.visible = true
        this.$nextTick(() => {
          this.$refs['dataForm'].resetFields()
          if (this.dataForm.id) {
            this.$http({
              url: this.$http.adornUrl(`/study/student/info/${this.dataForm.id}`),
              method: 'get',
              params: this.$http.adornParams()
            }).then(({data}) => {
              if (data && data.code === 200) {
                this.dataForm.upwd = data.student.upwd
                this.dataForm.uname = data.student.uname
                this.dataForm.classid = data.student.classid
                this.dataForm.header = data.student.header
              }
            })
          }
        })
      },
      // 表单提交
      dataFormSubmit () {
        this.$refs['dataForm'].validate((valid) => {
          if (valid) {
            this.$http({
              url: this.$http.adornUrl(`/study/student/${!this.dataForm.id ? 'save' : 'update'}`),
              method: 'post',
              data: this.$http.adornData({
                'id': this.dataForm.id || undefined,
                'upwd': this.dataForm.upwd,
                'uname': this.dataForm.uname,
                'classid': this.dataForm.classid,
                'header': this.imageUrl
              })
            }).then(({data}) => {
              if (data && data.code === 200) {
                this.$message({
                  message: '操作成功',
                  type: 'success',
                  duration: 1500,
                  onClose: () => {
                    this.visible = false
                    this.$emit('refreshDataList')
                  }
                })
              } else {
                this.$message.error(data.msg)
              }
            })
          }
        })
      }

完整代码
student.vue

<template>
  <div class="mod-config">
    <el-form :inline="true" :model="dataForm" @keyup.enter.native="getDataList()">
      <el-form-item>
        <el-input v-model="dataForm.key" placeholder="参数名" clearable></el-input>
      </el-form-item>
      <el-form-item>
        <el-button @click="getDataList()">查询</el-button>
        <el-button v-if="isAuth('study:student:save')" type="primary" @click="addOrUpdateHandle()">新增</el-button>
        <el-button v-if="isAuth('study:student:delete')" type="danger" @click="deleteHandle()" :disabled="dataListSelections.length <= 0">批量删除</el-button>
      </el-form-item>
    </el-form>
    <el-table
      :data="dataList"
      border
      v-loading="dataListLoading"
      @selection-change="selectionChangeHandle"
      style="width: 100%;">
      <el-table-column
        type="selection"
        header-align="center"
        align="center"
        width="50">
      </el-table-column>
      <el-table-column
        prop="id"
        header-align="center"
        align="center"
        label="学号(自增)">
      </el-table-column>
      <el-table-column
        prop="upwd"
        header-align="center"
        align="center"
        label="密码">
      </el-table-column>
      <el-table-column
        prop="uname"
        header-align="center"
        align="center"
        label="姓名">
      </el-table-column>
      <el-table-column
        prop="classid"
        header-align="center"
        align="center"
        label="班级">
      </el-table-column>
      <el-table-column prop="header" header-align="center" align="center" label="头像">
        <template slot-scope="scope">
          <!-- 自定义表格+自定义图片 -->
          <img :src="scope.row.header" style="width: 100px; height: 80px" />
        </template>
      </el-table-column>
      <el-table-column
        fixed="right"
        header-align="center"
        align="center"
        width="150"
        label="操作">
        <template slot-scope="scope">
          <el-button type="text" size="small" @click="addOrUpdateHandle(scope.row.id)">修改</el-button>
          <el-button type="text" size="small" @click="deleteHandle(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <el-pagination
      @size-change="sizeChangeHandle"
      @current-change="currentChangeHandle"
      :current-page="pageIndex"
      :page-sizes="[10, 20, 50, 100]"
      :page-size="pageSize"
      :total="totalPage"
      layout="total, sizes, prev, pager, next, jumper">
    </el-pagination>
    <!-- 弹窗, 新增 / 修改 -->
    <add-or-update v-if="addOrUpdateVisible" ref="addOrUpdate" @refreshDataList="getDataList"></add-or-update>
  </div>
</template>

<script>
  import AddOrUpdate from './student-add-or-update'
  export default {
    data () {
      return {
        dataForm: {
          key: ''
        },
        dataList: [],
        pageIndex: 1,
        pageSize: 10,
        totalPage: 0,
        dataListLoading: false,
        dataListSelections: [],
        addOrUpdateVisible: false
      }
    },
    components: {
      AddOrUpdate
    },
    activated () {
      this.getDataList()
    },
    methods: {
      // 获取数据列表
      getDataList () {
        this.dataListLoading = true
        this.$http({
          url: this.$http.adornUrl('/study/student/list'),
          method: 'get',
          params: this.$http.adornParams({
            'page': this.pageIndex,
            'limit': this.pageSize,
            'key': this.dataForm.key
          })
        }).then(({data}) => {
          if (data && data.code === 200) {
            this.dataList = data.page.list
            this.totalPage = data.page.totalCount
          } else {
            this.dataList = []
            this.totalPage = 0
          }
          this.dataListLoading = false
        })
      },
      // 每页数
      sizeChangeHandle (val) {
        this.pageSize = val
        this.pageIndex = 1
        this.getDataList()
      },
      // 当前页
      currentChangeHandle (val) {
        this.pageIndex = val
        this.getDataList()
      },
      // 多选
      selectionChangeHandle (val) {
        this.dataListSelections = val
      },
      // 新增 / 修改
      addOrUpdateHandle (id) {
        this.addOrUpdateVisible = true
        this.$nextTick(() => {
          this.$refs.addOrUpdate.init(id)
        })
      },
      // 删除
      deleteHandle (id) {
        var ids = id ? [id] : this.dataListSelections.map(item => {
          return item.id
        })
        this.$confirm(`确定对[id=${ids.join(',')}]进行[${id ? '删除' : '批量删除'}]操作?`, '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          this.$http({
            url: this.$http.adornUrl('/study/student/delete'),
            method: 'post',
            data: this.$http.adornData(ids, false)
          }).then(({data}) => {
            if (data && data.code === 200) {
              this.$message({
                message: '操作成功',
                type: 'success',
                duration: 1500,
                onClose: () => {
                  this.getDataList()
                }
              })
            } else {
              this.$message.error(data.msg)
            }
          })
        })
      }
    }
  }
</script>

student-add-or-update.vue

<template>
  <el-dialog
    :title="!dataForm.id ? '新增' : '修改'"
    :close-on-click-modal="false"
    :visible.sync="visible">
    <el-form :model="dataForm" :rules="dataRule" ref="dataForm" @keyup.enter.native="dataFormSubmit()" label-width="80px">
    <el-form-item label="密码" prop="upwd">
      <el-input v-model="dataForm.upwd" placeholder=""></el-input>
    </el-form-item>
    <el-form-item label="姓名" prop="uname">
      <el-input v-model="dataForm.uname" placeholder=""></el-input>
    </el-form-item>
    <el-form-item label="班级" prop="classid">
      <el-input v-model="dataForm.classid" placeholder=""></el-input>
    </el-form-item>
      <el-upload
                :show-file-list="false"
                :http-request="fnUploadRequest"
                :on-success="handleAvatarSuccess"
                :before-upload="beforeAvatarUpload">
            <img v-if="imageUrl" :src="imageUrl" class="avatar" alt="">
            <i v-else class="el-icon-plus avatar-uploader-icon"></i>
        </el-upload>
    </el-form>
    <span slot="footer" class="dialog-footer">
      <el-button @click="visible = false">取消</el-button>
      <el-button type="primary" @click="dataFormSubmit()">确定</el-button>
    </span>
  </el-dialog>
</template>

<style>
  .avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .avatar-uploader .el-upload:hover {
    border-color: #409EFF;
  }
  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
  }
  .avatar {
    width: 178px;
    height: 178px;
    display: block;
  }
</style>
<script>
  const OSS = require('ali-oss');
  const client= new OSS({
  accessKeyId: 'LTAI5t8BAFugx5Rhju18xVTT',  // 查看你自己的阿里云KEY
  accessKeySecret: 'FojJdHYFOmXbgAWKla0l91uckTS2z9', // 查看自己的阿里云KEYSECRET
  bucket: 'kcmall-wangyihui', // 你的 OSS bucket 名称
  region: 'oss-cn-hangzhou', // bucket 所在地址，我的是 华东2 杭州
  cname:true, // 开启自定义域名上传
  endpoint:"kcmall-wangyihui.oss-cn-hangzhou.aliyuncs.com" // 自己的域名
  });
  export default {
    data () {
      return {
        visible: false,
        dataForm: {
          id: 0,
          upwd: '',
          uname: '',
          classid: ''
        },
        imageUrl: '' ,
        dataRule: {
          upwd: [
            { required: true, message: '不能为空', trigger: 'blur' }
          ],
          uname: [
            { required: true, message: '不能为空', trigger: 'blur' }
          ],
          classid: [
            { required: true, message: '不能为空', trigger: 'blur' }
          ]
        }
      }
    },
    methods: {
      //图片上传成功回调
      handleAvatarSuccess(res) {
        if (res) this.imageUrl = res.url
      },
      beforeAvatarUpload(file) { 
        const isJPG = file.type === 'image/png';
        const isLt2M = file.size / 1024 / 1024 < 2;
        if (!isJPG) {
          this.$message.error('上传头像图片只能是 JPG 格式!');
        }
        if (!isLt2M) {
          this.$message.error('上传头像图片大小不能超过 2MB!');
          }
        return isJPG && isLt2M;
      },
      async fnUploadRequest(options) {
        try {
            let file = options.file; // 拿到 file
            let fileName = file.name.substr(0,file.name.lastIndexOf('.'))
            let date = new Date().getTime()
            let fileNames = `${date}_${fileName}` // 拼接文件名，保证唯一，这里使用时间戳+原文件名
            // 上传文件,这里是上传到OSS的 uploads文件夹下
            client.put("headerimages/"+fileNames, file).then(res=>{
                if (res.res.statusCode === 200) {                        
                  options.onSuccess(res)
                }else {
                  options.onError("上传失败")
                }
               })
            }catch (e) {
                 options.onError("上传失败")
            }        
      },
      init (id) {
        this.dataForm.id = id || 0
        this.visible = true
        this.$nextTick(() => {
          this.$refs['dataForm'].resetFields()
          if (this.dataForm.id) {
            this.$http({
              url: this.$http.adornUrl(`/study/student/info/${this.dataForm.id}`),
              method: 'get',
              params: this.$http.adornParams()
            }).then(({data}) => {
              if (data && data.code === 200) {
                this.dataForm.upwd = data.student.upwd
                this.dataForm.uname = data.student.uname
                this.dataForm.classid = data.student.classid
                this.dataForm.header = data.student.header
              }
            })
          }
        })
      },
      // 表单提交
      dataFormSubmit () {
        this.$refs['dataForm'].validate((valid) => {
          if (valid) {
            this.$http({
              url: this.$http.adornUrl(`/study/student/${!this.dataForm.id ? 'save' : 'update'}`),
              method: 'post',
              data: this.$http.adornData({
                'id': this.dataForm.id || undefined,
                'upwd': this.dataForm.upwd,
                'uname': this.dataForm.uname,
                'classid': this.dataForm.classid,
                'header': this.imageUrl
              })
            }).then(({data}) => {
              if (data && data.code === 200) {
                this.$message({
                  message: '操作成功',
                  type: 'success',
                  duration: 1500,
                  onClose: () => {
                    this.visible = false
                    this.$emit('refreshDataList')
                  }
                })
              } else {
                this.$message.error(data.msg)
              }
            })
          }
        })
      }
    }
  }
</script>

controller

package com.wang.study.controller;

import java.util.Arrays;
import java.util.List;
import java.util.Map;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.wang.study.dao.StudentDao;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.PageRequest;
import org.springframework.web.bind.annotation.*;
import org.springframework.data.domain.*;

import com.wang.study.entity.StudentEntity;
import com.wang.study.service.StudentService;
import com.wang.common.utils.PageUtils;
import com.wang.common.utils.R;



/**
 * 
 *
 * @author wangyihui
 * @email 2195167808@163.com
 * @date 2021-10-22 22:00:50
 */
@RestController
@RequestMapping("study/student")
public class StudentController {
    @Autowired
    private StudentService studentService;
    @Autowired
    private StudentDao studentDao;



    /**
     * 列表
     */
    @GetMapping("/list")
    //@RequiresPermissions("study:student:list")
    public R list(@RequestParam Map<String, Object> params){
        PageUtils pageUtils = studentService.queryPage(params);
        return R.ok().put("page", pageUtils);
    }


    /**
     * 信息
     */
    @RequestMapping("/info/{id}")
    //@RequiresPermissions("study:student:info")
    public R info(@PathVariable("id") Integer id){
		StudentEntity student = studentService.getById(id);
        return R.ok().put("student", student);
    }

    /**
     * 保存
     */
    @RequestMapping("/save")
    //@RequiresPermissions("study:student:save")
    public R save(@RequestBody StudentEntity student){
		studentService.save(student);

        return R.ok();
    }

    /**
     * 修改
     */
    @RequestMapping("/update")
    //@RequiresPermissions("study:student:update")
    public R update(@RequestBody StudentEntity student){
		studentService.updateById(student);

        return R.ok();
    }

    /**
     * 删除
     */
    @RequestMapping("/delete")
    //@RequiresPermissions("study:student:delete")
    public R delete(@RequestBody Integer[] ids){
		studentService.removeByIds(Arrays.asList(ids));

        return R.ok();
    }

}

这里用了分页插件
service impl

@Service("studentService")
public class StudentServiceImpl extends ServiceImpl<StudentDao, StudentEntity> implements StudentService {
    @Autowired
    private StudentDao studentDao;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        /**
         * 前端传的当前页、每页条数、查询参数
         */
        int p = Integer.parseInt(params.get("page")+"");
        int limit = Integer.parseInt(params.get("limit")+"");
        String key = params.get("key")+"";
        QueryWrapper<StudentEntity> queryWrapper = new QueryWrapper<>();
        if(key != null && !("").equals(key)){
            /**
             * 带条件查询时，并且不是从第一页开始查询，默认带条件查询时从第一页查询
             */
            queryWrapper.like("uname",key);
            p = 1;
        }
        Page<StudentEntity> page = new Page<>(p,limit);
        Page<StudentEntity> result = studentDao.selectPage(page,queryWrapper);
        return new PageUtils(result);
    }



}

返回类，分页类

package com.wang.common.utils;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import org.apache.http.HttpStatus;

import java.util.HashMap;
import java.util.Map;

/**
 * 返回数据
 *  R 继承了 HashMap 则不能继续使用泛型数据了 必须全是hashMap数据
 */
public class R extends HashMap<String, Object> {

	private static final long serialVersionUID = 1L;

	/**
	 * @param key 获取指定key的名字
	 */
	public <T> T getData(String key, TypeReference<T> typeReference){
		// get("data") 默认是map类型 所以再由map转成string再转json
		Object data = get(key);
		return JSON.parseObject(JSON.toJSONString(data), typeReference);
	}
	/**
	 * 复杂类型转换 TypeReference
	 */
	public <T> T getData(TypeReference<T> typeReference){
		// get("data") 默认是map类型 所以再由map转成string再转json
		Object data = get("data");
		return JSON.parseObject(JSON.toJSONString(data), typeReference);
	}

	public R setData(Object data){
		put("data", data);
		return this;
	}
	public R() {
		put("code", 200);
		put("msg", "success");
	}

	public static R error() {
		return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, "未知异常，请联系FIRENAY");
	}

	public static R error(String msg) {
		return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, msg);
	}

	public static R error(int code, String msg) {
		R r = new R();
		r.put("code", code);
		r.put("msg", msg);
		return r;
	}

	public static R ok(String msg) {
		R r = new R();
		r.put("msg", msg);
		return r;
	}

	public static R ok(Map<String, Object> map) {
		R r = new R();
		r.putAll(map);
		return r;
	}

	public static R ok() {
		return new R();
	}

	public R put(String key, Object value) {
		super.put(key, value);
		return this;
	}


	public Integer getCode() {
		return (Integer) this.get("code");
	}

	public String reponse(){
		return JSON.toJSONString(this);
	}
}

/**
 * Copyright (c) 2016-2019 人人开源 All rights reserved.
 *
 * https://www.renren.io
 *
 * 版权所有，侵权必究！
 */

package com.wang.common.utils;

import com.baomidou.mybatisplus.core.metadata.IPage;

import java.io.Serializable;
import java.util.List;

/**
 * 分页工具类
 *
 */
public class PageUtils implements Serializable {
	private static final long serialVersionUID = 1L;
	/**
	 * 总记录数
	 */
	private int totalCount;
	/**
	 * 每页记录数
	 */
	private int pageSize;
	/**
	 * 总页数
	 */
	private int totalPage;
	/**
	 * 当前页数
	 */
	private int currPage;
	/**
	 * 列表数据
	 */
	private List<?> list;
	
	/**
	 * 分页
	 * @param list        列表数据
	 * @param totalCount  总记录数
	 * @param pageSize    每页记录数
	 * @param currPage    当前页数
	 */
	public PageUtils(List<?> list, int totalCount, int pageSize, int currPage) {
		System.out.println("23456");
		this.list = list;
		this.totalCount = totalCount;
		this.pageSize = pageSize;
		this.currPage = currPage;
		this.totalPage = (int)Math.ceil((double)totalCount/pageSize);
	}

	/**
	 * 分页
	 */
	public PageUtils(IPage<?> page) {
		this.list = page.getRecords();
		this.totalCount = (int)page.getTotal();
		this.pageSize = (int)page.getSize();
		this.currPage = (int)page.getCurrent();
		this.totalPage = (int)page.getPages();
	}
	/**
	 * 分页
	 */
	public PageUtils() {

	}

	public int getTotalCount() {
		return totalCount;
	}

	public void setTotalCount(int totalCount) {
		this.totalCount = totalCount;
	}

	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}

	public int getTotalPage() {
		return totalPage;
	}

	public void setTotalPage(int totalPage) {
		this.totalPage = totalPage;
	}

	public int getCurrPage() {
		return currPage;
	}

	public void setCurrPage(int currPage) {
		this.currPage = currPage;
	}

	public List<?> getList() {
		return list;
	}

	public void setList(List<?> list) {
		this.list = list;
	}
	
}