• python保存文件到数据库


    效果

     

    model

    class WEIGUI_IMG(Base):
        __tablename__ = 'DW_ZHS_D_WEIGUI_IMG'  # 表名
    
        id = Column('img_id', String(64), primary_key=True)
        img_context = Column(LargeBinary)
        file_name = Column('file_name', String(200), nullable=True)

    后台路由

    @api.route('/weigui/img', methods=['POST'])
    def weigui_img():
        img = request.files['file']
        # img.save(img.filename)#直接保存为文件
        weigui_img = WEIGUI_IMG()
        weigui_img.id = str(uuid.uuid1()).replace('-','')
        weigui_img.img_context = img.read()
        weigui_img.file_name = img.filename
        img.close()
        db_session.add(weigui_img)
        db_session.commit()
        return jsonify({'msg': 'success'})

    前端代码页面

                    <el-form-item label="上传文件">
                        <el-upload action="http://10.0.0.49:9090/api/v1600/weigui/img" list-type="picture-card" :on-preview="handlePictureCardPreview" :on-remove="handleRemove">
                            <i class="el-icon-plus"></i>
                        </el-upload>
                    </el-form-item>
    
    
            <el-dialog :visible.sync="dialogVisible" top="5vh">
                <img width="90%" :src="dialogImageUrl" alt="">
            </el-dialog>

     前端代码js

                    dialogImageUrl: '',
                    dialogVisible: false,
    
                handleRemove(file, fileList) {
                    console.log(file, fileList)
                },
                handlePictureCardPreview(file) {
                    this.dialogImageUrl = file.url
                    this.dialogVisible = true
                }

    后续,编辑时取出所存图片

    效果

    发送请求

    后台代码

    需指定返回图片类型

    @api.route('/weigui/img/<id>')
    def weigui_img_by_id(id):
        textsql = "select * from dw_zhs_d_weigui_img t where t.img_id = :id"
        row = db_session.execute(textsql, {'id': id}).fetchone()
        return Response(row.img_context, mimetype="image/jpeg")

     返回存进去的excel文件

    # 获取excel测试
    @api.route('/stream/excel')
    def weigui_excel():
        obj = db_session.query(WEIGUI_IMG).filter(WEIGUI_IMG.file_name.like('%%%s%%' %'xls')).one()
        response = Response(obj.img_context, mimetype='text/csv')
        response.headers["Content-Disposition"] = "attachment; filename={}".format('1.xls')
        return response

    前端js代码

                //显示编辑界面
                handleEdit: function (index, row) {
                    this.editFormVisible = true
                    this.editForm = Object.assign({}, row)
                    this.filelist = []
                    if(row.imgs){
                        let temp = row.imgs.split(',')
                        temp.pop()
                        temp.forEach(obj=>{
                            this.filelist.push({
                                name: '1.png',
                                url: this.imgUrl+'/'+obj
                            })
                        })
                    }
                },

    前端html代码

            <!--新增界面-->
            <el-dialog title="新增" v-model="addFormVisible" :close-on-click-modal="false">
                <el-form :model="addForm" label-width="80px" ref="addForm">
                    <el-form-item label="企业名称">
                        <el-select v-model="addForm.company_id" filterable remote reserve-keyword placeholder="请输入企业名" :remote-method="remoteMethod" :loading="selectLoading" style=" 250px">
                            <el-option v-for="item in options" :key="item.code" :label="item.name" :value="item.code"></el-option>
                        </el-select>
                    </el-form-item>
                    <el-form-item label="违规时间">
                        <el-date-picker v-model="addForm.weigui_time" style=" 250px"></el-date-picker>
                    </el-form-item>
                    <el-form-item label="违规详情">
                        <el-input v-model="addForm.detail" auto-complete="off" type="textarea" autosize></el-input>
                    </el-form-item>
                    <el-form-item label="备注">
                        <el-input v-model="addForm.remark" auto-complete="off" type="textarea" autosize></el-input>
                    </el-form-item>
                    <el-form-item label="文件">
                        <el-upload :action="imgUrl" list-type="picture-card" :on-preview="handlePictureCardPreview" :on-remove="handleRemove" ref="uploader_add" :on-success="fileUploadAddSuccess">
                            <i class="el-icon-plus"></i>
                        </el-upload>
                    </el-form-item>
                </el-form>
                <div slot="footer" class="dialog-footer">
                    <el-button @click.native="addFormVisible = false">取消</el-button>
                    <el-button type="primary" @click.native="addSubmit" :loading="addLoading">提交</el-button>
                </div>
            </el-dialog>
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  • 原文地址:https://www.cnblogs.com/lurenjia1994/p/9947098.html
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