• .net code+vue 文件上传


    后端技术

    .net code 官方文档 https://docs.microsoft.com/zh-cn/aspnet/core/mvc/models/file-uploads?view=aspnetcore-3.1

    上传方式:multipart/form-data

    其他参数:Name,Version,Type

    方法1:自定义解析

    [ApiController]
    [Route("api/[controller]")]
    public class UploadController : ControllerBase
    {
      private const string fileRootPath = "D://files";
      [HttpPost]
      [DisableFormValueModelBinding]
      [Route("UploadFile")]
      public async Task<ApiResult<FileUploadResponse>> UploadFile()
      {
        FileUploadResponse datas = new FileUploadResponse();
        var reader = new MultipartReader(HeaderUtilities.RemoveQuotes((MediaTypeHeaderValue.Parse(Request.ContentType)).Boundary).Value, HttpContext.Request.Body);
        MultipartSection section = await reader.ReadNextSectionAsync();
        while (section != null)
        {
          try
          {
            if (!ContentDispositionHeaderValue.TryParse(section.ContentDisposition, out var contentDisposition)
              || contentDisposition == null
              || !contentDisposition.DispositionType.Equals("form-data"))
            {
              continue;
            }
            using (var memoryStream = new MemoryStream())
            {
              await section.Body.CopyToAsync(memoryStream);
              string fileName = contentDisposition.FileName.Value;
              string name = contentDisposition.Name.Value;
              if (string.IsNullOrWhiteSpace(fileName))
              {
                var encoding = GetEncoding(section);
                string value = encoding.GetString(memoryStream.ToArray());
                datas.Propertys.Add(new KeyValuePair<string, string>(name, value));
                continue;
              }
              fileName = Guid.NewGuid().ToString("N") + Path.GetExtension(fileName);
              datas.FileNames.Add(fileName);
              using (var targetStream = System.IO.File.Create(Path.Combine(fileRootPath, fileName))) 
              { 
                await targetStream.WriteAsync(memoryStream.ToArray()); 
              }
            }
          } 
          finally 
          {
            section = await reader.ReadNextSectionAsync(); 
          } 
        } 
        return ResultState.Success(datas); 
      }
    }

    移除.netCode默认

    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
    public class DisableFormValueModelBindingAttribute : System.Attribute, IResourceFilter
    {
      public void OnResourceExecuting(ResourceExecutingContext context)
      {
        var factories = context.ValueProviderFactories;
        factories.RemoveType<FormValueProviderFactory>();
        factories.RemoveType<FormFileValueProviderFactory>();
        factories.RemoveType<JQueryFormValueProviderFactory>();
      }
      public void OnResourceExecuted(ResourceExecutedContext context)
      {
      }
    }

    返回值模型类

    public class FileUploadResponse
    {
      public List<KeyValuePair<string, string>> Propertys { get; set; } = new List<KeyValuePair<string, string>>();
      public List<string> FileNames { get; set; } = new List<string>();
    }

    方法二:使用IFormFile

    [ApiController]
    [Route("api/[controller]")]
    public class UploadController : ControllerBase
    {
      private const string fileRootPath = "D://files";
      [HttpPost]
      [Route("UploadFiles")]
      public async Task<ApiResult<FileUploadResponse>> UploadFiles([FromForm]FileUploadRequest data)
                                         //(IFormFile file, [FromForm] string name, [FromForm] string version, [FromForm] FileUploadType type) 
                                         //([FromForm]List<IFormFile> files, [FromForm]string name)
      {
        var result = new FileUploadResponse();
        result.Propertys.Add(new KeyValuePair<string, string>("Name", data.Name));
        result.Propertys.Add(new KeyValuePair<string, string>("Version", data.Version));
        result.Propertys.Add(new KeyValuePair<string, string>("Type", data.Type));
    
        string suffix = Path.GetExtension(data.File.FileName);
        string fileName = data.File.FileName + "_" + Guid.NewGuid().ToString("N") + suffix;
        using (var stream = new FileStream(Path.Combine(fileRootPath, fileName), FileMode.Create))
        {
          await data.File.CopyToAsync(stream);
        }
        result.FileNames.Add(fileName);
        return ResultState.Success(result);
      }
    }

    请求模型类和返回值模型类

    public class FileUploadRequest
    {
        public IFormFile File { get; set; }
        public string Name { get; set; }
        public string Version { get; set; }
        public string Type { get; set; }
    }
    public class FileUploadResponse
    {
        public List<KeyValuePair<string, string>> Propertys { get; set; } = new List<KeyValuePair<string, string>>();
        public List<string> FileNames { get; set; } = new List<string>();
    }

    前端技术

    前端采用vuex+element-ui

    element-ui官网:https://element.eleme.cn/#/zh-cn/component/upload

    方式1:el-upload action 提交 

    <template>
    <div>
        <el-form :model="form" :rules="rules" ref="form" label-width="150px">
            <el-form-item label="名称" prop="name">
                <el-input v-model="form.name" placeholder="请填写名称"/>
            </el-form-item>
            <el-form-item label="版本号" prop="version">
                <el-input v-model="form.version" placeholder="请填写版本号"/>
            </el-form-item>
            <el-form-item label="类型" prop="type">
                <el-input v-model="form.type" placeholder="请填写类型"/>
            </el-form-item>
            <el-form-item label="上传文件" prop="path">
                <el-upload
                    action="http://localhost:5001/api/FileUpload/UploadifyFile"
                    :before-upload="beforeUpload" 
                    :show-file-list="false"
                    :data="extraData()"
                    :on-success="uploadSuccess"
                    >
                    <el-button size="small" type="primary">点击上传</el-button>
                    <span>{{this.form.path}}</span>
                </el-upload>
            </el-form-item>
        </el-form>
        <br>
    </div>
    </template>
    
    <script>
    export default {
        data() {
          return {
            rules: {
                name: [ { required: true, message: "请填写名称", trigger: "blur" } ],
                version: [ { required: true, message: "请填写版本号", trigger: "blur" } ],
                type: [ { required: true, message: "请填写类型", trigger: "blur" } ],
                path: [ { required: true, message: "请选择文件", trigger: "blur" } ]
            },
            form: {
                name: undefined,
                version: undefined,
                type: undefined,
                path: undefined
            }
          }
        },
        methods: {
          extraData() {
            return {
                "name": this.form.name,
                "version": this.form.version,
                "type": this.form.type
            }
          },
          uploadSuccess(response, file, fileList){
              this.form.path = response.data.fileName;
          },
          beforeUpload(file) 
          {
              if(this.form.name == null || this.form.name === ""){
                this.$message.error('请填写名称');
                return false;
              }
              if(this.form.version == null || this.form.version === ""){
                this.$message.error('请填写版本号');
                return false;
              }
              if(this.form.type == null || this.form.type === ""){
                this.$message.error('请填写类型');
                return false;
              }
              return true;
          }
        }
    }
    </script>

    方法二:axios提交

    <template>
    <div>
        <el-form :model="form" :rules="rules" ref="form" label-width="150px">
            <el-form-item label="名称" prop="name">
                <el-input v-model="form.name" placeholder="请填写名称"/>
            </el-form-item>
            <el-form-item label="版本号" prop="version">
                <el-input v-model="form.version" placeholder="请填写版本号"/>
            </el-form-item>
            <el-form-item label="类型" prop="type">
                <el-input v-model="form.type" placeholder="请填写类型"/>
            </el-form-item>
            <el-form-item label="上传文件" prop="path">
                <el-upload 
                    action=""
                    :before-upload="beforeUpload" 
                    :show-file-list="false"
                    :data="extraData()"
                    :http-request="handleHttpRequest">
                    <el-button size="small" type="primary">点击上传</el-button>
                    <span>{{this.form.path}}</span>
                </el-upload>
            </el-form-item>
        </el-form>
        <br>
    </div>
    </template>
    
    <script>
    import axios from "axios";
    export default {
        data() {
          return {
            rules: {
                name: [ { required: true, message: "请填写名称", trigger: "blur" } ],
                version: [ { required: true, message: "请填写版本号", trigger: "blur" } ],
                type: [ { required: true, message: "请填写类型", trigger: "blur" } ],
                path: [ { required: true, message: "请选择文件", trigger: "blur" } ]
            },
            form: {
                name: undefined,
                version: undefined,
                type: undefined,
                path: undefined
            }
          }
        },
        methods: {
          extraData() {
            return {
                "name": this.form.name,
                "version": this.form.version,
                "type": this.form.type
            }
          },
          handleHttpRequest(fileDatas){
                var fd = new FormData();
                for (let prop in fileDatas.data) {
                    fd.append(prop, fileDatas.data[prop]);
                }
                fd.append("file", fileDatas.file);
    
                let config = {
                    headers: {
                        'Content-Type': 'multipart/form-data'
                    }
                }
    
                axios.post("http://localhost:5001/api/FileUpload/UploadifyFile", fd, config).then(response => 
                { 
                    console.log(response);
                    this.form.path = response.data.data.fileName;
                });
          },
          beforeUpload(file) 
          {
              if(this.form.name == null || this.form.name === ""){
                this.$message.error('请填写名称');
                return false;
              }
              if(this.form.version == null || this.form.version === ""){
                this.$message.error('请填写版本号');
                return false;
              }
              if(this.form.type == null || this.form.type === ""){
                this.$message.error('请填写类型');
                return false;
              }
              return true;
          }
        }
    }
    </script>
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  • 原文地址:https://www.cnblogs.com/Cxiaoao/p/13754976.html
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