谷粒商城-全栈-24 商品服务-阿里云存储 (OSS) 前后端联调测试上传

一、上传组件封装

前端 renren-fast-vue 项目:
创建 /renren-fast-vue/src/components/upload/policy.js 文件

import http from '@/utils/httpRequest.js'
export function policy() {
   return  new Promise((resolve,reject)=>{
        http({
            url: http.adornUrl("/thirdparty/oss/policy"),
            method: "get",
            params: http.adornParams({})
        }).then(({ data }) => {
            resolve(data);
        })
    });
}

创建 src/components/upload/singleUpload.vue 文件

<template>
  <div>
    <el-upload
      action="http://gulimall-corwien.oss-cn-heyuan.aliyuncs.com"
      :data="dataObj"
      list-type="picture"
      :multiple="false"
      :show-file-list="showFileList"
      :file-list="fileList"
      :before-upload="beforeUpload"
      :on-remove="handleRemove"
      :on-success="handleUploadSuccess"
      :on-preview="handlePreview"
    >
      <el-button size="small" type="primary">点击上传</el-button>
      <div slot="tip" class="el-upload__tip">只能上传jpg/png文件,且不超过10MB</div>
    </el-upload>
    <el-dialog :visible.sync="dialogVisible">
      <img width="100%" :src="fileList[0].url" alt />
    </el-dialog>
  </div>
</template>
<script>
import { policy } from "./policy";
import { getUUID } from "@/utils";

export default {
  name: "singleUpload",
  props: {
    value: String,
  },
  computed: {
    imageUrl() {
      return this.value;
    },
    imageName() {
      if (this.value != null && this.value !== "") {
        return this.value.substr(this.value.lastIndexOf("/") + 1);
      } else {
        return null;
      }
    },
    fileList() {
      return [
        {
          name: this.imageName,
          url: this.imageUrl,
        },
      ];
    },
    showFileList: {
      get: function () {
        return (
          this.value !== null && this.value !== "" && this.value !== undefined
        );
      },
      set: function (newValue) {},
    },
  },
  data() {
    return {
      dataObj: {
        policy: "",
        signature: "",
        key: "",
        ossaccessKeyId: "",
        dir: "",
        host: "",
        // callback:'',
      },
      dialogVisible: false,
    };
  },
  methods: {
    emitInput(val) {
      this.$emit("input", val);
    },
    handleRemove(file, fileList) {
      this.emitInput("");
    },
    handlePreview(file) {
      this.dialogVisible = true;
    },
    beforeUpload(file) {
      let _self = this;
      return new Promise((resolve, reject) => {
        policy()
          .then((response) => {
            _self.dataObj.policy = response.data.policy;
            _self.dataObj.signature = response.data.signature;
            _self.dataObj.ossaccessKeyId = response.data.accessid;
            _self.dataObj.key =
              response.data.dir + "/" + getUUID() + "_${filename}";
            _self.dataObj.dir = response.data.dir;
            _self.dataObj.host = response.data.host;
            resolve(true);
          })
          .catch((err) => {
            reject(false);
          });
      });
    },
    handleUploadSuccess(res, file) {
      console.log("上传成功...");
      this.showFileList = true;
      this.fileList.pop();
      this.fileList.push({
        name: file.name,
        url:
          this.dataObj.host +
          "/" +
          this.dataObj.key.replace("${filename}", file.name),
      });
      this.emitInput(this.fileList[0].url);
    },
  },
};
</script>
<style>
</style>

创建 src/views/modules/product/brand-add-or-update.vue 文件

<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="140px"
    >
      <el-form-item label="品牌名" prop="name">
        <el-input v-model="dataForm.name" placeholder="品牌名"></el-input>
      </el-form-item>
      <el-form-item label="品牌logo地址" prop="logo">
        <!-- <el-input v-model="dataForm.logo" placeholder="品牌logo地址"></el-input> -->
        <single-upload v-model="dataForm.logo"></single-upload>
      </el-form-item>
      <el-form-item label="介绍" prop="descript">
        <el-input v-model="dataForm.descript" placeholder="介绍"></el-input>
      </el-form-item>
      <el-form-item label="显示状态" prop="showStatus">
        <el-switch
          v-model="dataForm.showStatus"
          active-color="#13ce66"
          inactive-color="#ff4949"
          :active-value="1"
          :inactive-value="0"
        ></el-switch>
      </el-form-item>
      <el-form-item label="检索首字母" prop="firstLetter">
        <el-input v-model="dataForm.firstLetter" placeholder="检索首字母"></el-input>
      </el-form-item>
      <el-form-item label="排序" prop="sort">
        <el-input v-model.number="dataForm.sort" placeholder="排序"></el-input>
      </el-form-item>
    </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>

<script>
import SingleUpload from "@/components/upload/singleUpload";
export default {
  components: { SingleUpload },
  data() {
    return {
      visible: false,
      dataForm: {
        brandId: 0,
        name: "",
        logo: "",
        descript: "",
        showStatus: 1,
        firstLetter: "",
        sort: 0
      },
      dataRule: {
        name: [{ required: true, message: "品牌名不能为空", trigger: "blur" }],
        logo: [
          { required: true, message: "品牌logo地址不能为空", trigger: "blur" }
        ],
        descript: [
          { required: true, message: "介绍不能为空", trigger: "blur" }
        ],
        showStatus: [
          {
            required: true,
            message: "显示状态[0-不显示;1-显示]不能为空",
            trigger: "blur"
          }
        ],
        firstLetter: [
          {
            validator: (rule, value, callback) => {
              if (value == "") {
                callback(new Error("首字母必须填写"));
              } else if (!/^[a-zA-Z]$/.test(value)) {
                callback(new Error("首字母必须a-z或者A-Z之间"));
              } else {
                callback();
              }
            },
            trigger: "blur"
          }
        ],
        sort: [
          {
            validator: (rule, value, callback) => {
              if (value == "") {
                callback(new Error("排序字段必须填写"));
              } else if (!Number.isInteger(value) || value<0) {
                callback(new Error("排序必须是一个大于等于0的整数"));
              } else {
                callback();
              }
            },
            trigger: "blur"
          }
        ]
      }
    };
  },
  methods: {
    init(id) {
      this.dataForm.brandId = id || 0;
      this.visible = true;
      this.$nextTick(() => {
        this.$refs["dataForm"].resetFields();
        if (this.dataForm.brandId) {
          this.$http({
            url: this.$http.adornUrl(
              `/product/brand/info/${this.dataForm.brandId}`
            ),
            method: "get",
            params: this.$http.adornParams()
          }).then(({ data }) => {
            if (data && data.code === 0) {
              this.dataForm.name = data.brand.name;
              this.dataForm.logo = data.brand.logo;
              this.dataForm.descript = data.brand.descript;
              this.dataForm.showStatus = data.brand.showStatus;
              this.dataForm.firstLetter = data.brand.firstLetter;
              this.dataForm.sort = data.brand.sort;
            }
          });
        }
      });
    },
    // 表单提交
    dataFormSubmit() {
      this.$refs["dataForm"].validate(valid => {
        if (valid) {
          this.$http({
            url: this.$http.adornUrl(
              `/product/brand/${!this.dataForm.brandId ? "save" : "update"}`
            ),
            method: "post",
            data: this.$http.adornData({
              brandId: this.dataForm.brandId || undefined,
              name: this.dataForm.name,
              logo: this.dataForm.logo,
              descript: this.dataForm.descript,
              showStatus: this.dataForm.showStatus,
              firstLetter: this.dataForm.firstLetter,
              sort: this.dataForm.sort
            })
          }).then(({ data }) => {
            if (data && data.code === 0) {
              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>

服务端:
修改请求返回值格式统一用 R 封装:
gulimall-third-party/src/main/java/com/atguigu/gulimall/thirdparty/controller/OssController.java

package com.atguigu.gulimall.thirdparty.controller;

import com.aliyun.oss.OSS;
import com.aliyun.oss.common.utils.BinaryUtil;
import com.aliyun.oss.model.MatchMode;
import com.aliyun.oss.model.PolicyConditions;
import com.atguigu.common.utils.R;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * @author: kaiyi
 * @create: 2020-08-20 02:02
 */
@RestController
@RequestMapping("thirdparty")
public class OssController {

  @Autowired
  OSS ossClient;

  @Value("${alibaba.cloud.oss.endpoint}")
  private String endpoint;

  @Value("${alibaba.cloud.oss.bucket}")
  private String bucket;

  @Value("${alibaba.cloud.access-key}")
  private String accessId;

  @RequestMapping("/oss/policy")
  public R policy(){

    // host的格式为 bucketname.endpoint
    String host = "https://" + bucket + "." + endpoint;

    // callbackUrl为 上传回调服务器的URL,请将下面的IP和Port配置为您自己的真实信息。
    String callbackUrl = "http://88.88.88.88:8888";

    // 用户上传文件时指定的前缀,也就是目录
    String format = new SimpleDateFormat("YYYY-MM-dd").format(new Date());
    String dir = format;

    // 创建OSSClient实例,引入自动依赖注入,这里不需要再new了
    // OSS ossClient = new OSSClientBuilder().build(endpoint, accessId, accessKey);

    Map<String, String> respMap = null;

    try {
      long expireTime = 30;
      long expireEndTime = System.currentTimeMillis() + expireTime * 1000;
      Date expiration = new Date(expireEndTime);
      // PostObject请求最大可支持的文件大小为5 GB,即CONTENT_LENGTH_RANGE为5*1024*1024*1024。
      PolicyConditions policyConds = new PolicyConditions();
      policyConds.addConditionItem(PolicyConditions.COND_CONTENT_LENGTH_RANGE, 0, 1048576000);
      policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, dir);

      String postPolicy = ossClient.generatePostPolicy(expiration, policyConds);
      byte[] binaryData = postPolicy.getBytes("utf-8");
      String encodedPolicy = BinaryUtil.toBase64String(binaryData);
      String postSignature = ossClient.calculatePostSignature(postPolicy);

      respMap = new LinkedHashMap<String, String>();
      respMap.put("accessid", accessId);
      respMap.put("policy", encodedPolicy);
      respMap.put("signature", postSignature);
      respMap.put("dir", dir);
      respMap.put("host", host);
      respMap.put("expire", String.valueOf(expireEndTime / 1000));
      // respMap.put("expire", formatISO8601Date(expiration));

      /*
      JSONObject jasonCallback = new JSONObject();
      jasonCallback.put("callbackUrl", callbackUrl);
      jasonCallback.put("callbackBody",
          "filename=${object}&size=${size}&mimeType=${mimeType}&height=${imageInfo.height}&width=${imageInfo.width}");
      jasonCallback.put("callbackBodyType", "application/x-www-form-urlencoded");
      String base64CallbackBody = BinaryUtil.toBase64String(jasonCallback.toString().getBytes());
      respMap.put("callback", base64CallbackBody);
       */

    } catch (Exception e) {
      // Assert.fail(e.getMessage());
      System.out.println(e.getMessage());
    } finally {
      ossClient.shutdown();
    }

    return R.ok().put("data", respMap);

  }

}

二、OSS跨域问题处理

浏览器跨域问题

在前端封装好组件,调用OSS接口发送数据时,浏览器会进行跨域校验,因为是直接从本地直接POST数据到阿里云OSS服务器,所以,就会出现跨域报错的问题,这也是最关键的一个点。

Access to XMLHttpRequest at 'http://gulimall-corwien.oss-cn-heyuan.aliyuncs.com/' from origin 'http://localhost:8001' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
upload.js?c0e8:599 POST http://gulimall-corwien.oss-cn-heyuan.aliyuncs.com/ net::ERR_FAILED
upload @ upload.js?c0e8:599

file

解决方法

在 阿里云 OSS后台,修改跨域规则。

阿里云OSS管理后台-》基础数据-》基础设置-》跨域访问 开启

file

创建跨域规则:
file

这里使用的是通配符,等项目正式上线后可以改为我们项目的域名。

跨域规则创建完成后,然后再上传图片测试,发现已经可以正常上传到OSS了。
file

我们可以通过 vue插件来查看Vue动态属性绑定的值,这个插件非常强大,可以帮助我们快速定位调试:
file

为者常成,行者常至