1 準備工作

• 在阿里云申請AccessKey ID、Access Key Secret，保存
• 申請阿里云OSS，新建Bucket，目錄，自己上傳兩張圖片先試試

2. 后端接口開發(fā)

2.1 添加pom依賴

<dependency>
    <groupId>com.aliyun.oss</groupId>
    <artifactId>aliyun-sdk-oss</artifactId>
    <version>2.8.3</version>
</dependency>

2.2 測試阿里云OSS上傳功能

public class AliOSSTest {
    public static void main(String[] args) {
        // Endpoint以杭州為例，其它Region請按實際情況填寫。
        String endpoint = "http://oss-cn-hangzhou.aliyuncs.com";
        // 阿里云主賬號AccessKey擁有所有API的訪問權限，風險很高
        String accessKeyId = "****";
        String accessKeySecret = "****";
        String bucketName = "****";
        String filedir = "avatar/";
        String fileKey = "hello.jpg";
        // 創(chuàng)建OSSClient實例
        OSSClient ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
        // 上傳文件
        PutObjectResult putResult = ossClient.putObject(bucketName, filedir + fileKey, new File("D:\\bg.jpg"));
        //時間戳
        Date expiration = new Date(new Date().getTime() + 3600l * 1000 * 24 * 365 * 10);
        // 生成URL
        URL url = ossClient.generatePresignedUrl(bucketName, filedir + fileKey, expiration);
        System.out.println(url);
        ossClient.shutdown();
    }
}

2.3 編寫上傳接口程序，用swagger測試

package com.soft1721.jianyue.api.controller;

import com.aliyun.oss.OSSClient;
import com.aliyun.oss.model.PutObjectResult;
import com.soft1721.jianyue.api.util.ResponseResult;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.Date;
import java.util.UUID;

@RestController
@RequestMapping(value = "/api")
public class UploadController {
    @PostMapping("/avatar/upload")
    public String ossUpload(@RequestParam("file") MultipartFile sourceFile) {
        String endpoint = "http://oss-cn-hangzhou.aliyuncs.com";
        String accessKeyId = "***";
        String accessKeySecret = "***";
        String bucketName = "***";
        String filedir = "avatar/";
        // 獲取源文件名
        String fileName = sourceFile.getOriginalFilename();
        // 獲取源文件名后綴
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        //uuid生成主文件名
        String prefix = UUID.randomUUID().toString();
        //新文件名
        String newFileName = prefix + suffix;
        //File類型的臨時文件
        File tempFile = null;
        try {
            //創(chuàng)建臨時文件，用uuid主文件名+原后綴名
            tempFile = File.createTempFile(prefix, prefix);
            // MultipartFile轉成File
            sourceFile.transferTo(tempFile);
        } catch (IOException e) {
            e.printStackTrace();
        }
        OSSClient ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
        ossClient.putObject(bucketName, filedir + newFileName, tempFile);
        Date expiration = new Date(new Date().getTime() + 3600l * 1000 * 24 * 365 * 10);
        // 生成URL
        URL url = ossClient.generatePresignedUrl(bucketName, filedir + newFileName, expiration);
        ossClient.shutdown();
        //URL返回給客戶端
        return url.toString();
    }
}

• 測試結果

  image

2.4 編寫修改個人頭像的接口，并且用JUnit、swagger測試

此處省略mapper層、service層，及單元測試

• UserController修改頭像的接口

@PostMapping("/avatar")
public String ossUpload(@RequestParam("file") MultipartFile sourceFile,@RequestParam("userId") int userId) {
    String endpoint = "http://oss-cn-hangzhou.aliyuncs.com";
    String accessKeyId = "***";
    String accessKeySecret = "***";
    String bucketName = "***";
    String filedir = "avatar/";
    // 獲取文件名
    String fileName = sourceFile.getOriginalFilename();
    // 獲取文件后綴
    String suffix = fileName.substring(fileName.lastIndexOf("."));
    //uuid生成主文件名
    String prefix = UUID.randomUUID().toString();
    String newFileName = prefix + suffix;
    File tempFile = null;
    try {
        //創(chuàng)建臨時文件
        tempFile = File.createTempFile(prefix, prefix);
        // MultipartFile to File
        sourceFile.transferTo(tempFile);
    } catch (IOException e) {
        e.printStackTrace();
    }
    OSSClient ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
    ossClient.putObject(bucketName, filedir + newFileName, tempFile);
    Date expiration = new Date(new Date().getTime() + 3600l * 1000 * 24 * 365 * 10);
    // 生成URL
    URL url = ossClient.generatePresignedUrl(bucketName, filedir + newFileName, expiration);
    ossClient.shutdown();
    //根據(jù)userId查詢出原始用戶數(shù)據(jù)
    User user = userService.getUserById(userId);
    //更新頭像屬性
    user.setAvatar(url.toString());
    //修改用戶信息并持久化
    userService.updateUser(user);
    //將頭像鏈接返回給客戶端，以便實時預覽
    return url.toString();
}

3.前端

• setting頁面點擊用戶資料跳轉到user_info頁面，別忘了在pages.json注冊新頁面

<navigator url="../user_info/user_info">
個人資料
</navigator>

• user_info頁面對頭像做點擊事件，點擊彈出ActionSheet

<image :src="avatar" class="avatar" @tap="showActionSheet"></image>

• js部分的data數(shù)據(jù)

data() {
return {
nickname: uni.getStorageSync('login_key').nickname,
avatar: uni.getStorageSync('login_key').avatar,
userId: uni.getStorageSync('login_key').userId
};
}

• showActionSheet函數(shù)

showActionSheet: function() {
            var _this = this;
            uni.showActionSheet({
                itemList: ['拍照', '從相冊選擇'],
                success: function(res) {
                    console.log('選中了第' + (res.tapIndex + 1) + '個按鈕');
                    //選擇的是拍照功能
                    if (res.tapIndex == 0) {
                        uni.chooseImage({
                            count: 1,
                            sourceType: ['camera'],
                            success: function(res) {
                                uni.saveImageToPhotosAlbum({
                                    filePath: res.tempFilePaths[0],
                                    success: function() {
                                        console.log('save success');
                                        uni.uploadFile({
                                            url: 'http://****:8080/api/user/avatar', 
                                            filePath: res.tempFilePaths[0],
                                            name: 'file',
                                            formData: {
                                                userId: _this.userId
                                            },
                                            success: uploadFileRes => {
                                                console.log(uploadFileRes.data);
                                                _this.avatar = uploadFileRes.data;
                                            }
                                        });
                                    }
                                });
                            }
                        });
                    }
                    //從相冊選擇
                    if (res.tapIndex == 1) {
                        uni.chooseImage({
                            count: 1, //默認9
                            sizeType: ['original', 'compressed'], //可以指定是原圖還是壓縮圖，默認二者都
                            sourceType: ['album'], //從相冊選擇
                            success: function(res) {
                                console.log(JSON.stringify(res.tempFilePaths));
                                uni.uploadFile({
                                    url: 'http://******:8080/api/user/avatar', 
                                    filePath: res.tempFilePaths[0],
                                    name: 'file',
                                    formData: {
                                        userId: _this.userId
                                    },
                                    success: uploadFileRes => {
                                        console.log(uploadFileRes.data);
                                        _this.avatar = uploadFileRes.data;
                                    }
                                });
                            }
                        });
                    }
                },
                fail: function(res) {
                    console.log(res.errMsg);
                }
            });
        }