https://jingyan.baidu.com/article/ea24bc3973db059a63b3316d.html
<!--<version>2.1.5.RELEASE</version> springboot版本-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.aliyun.oss</groupId>
<artifactId>aliyun-sdk-oss</artifactId>
<version>2.8.3</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.10.1</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.8.1</version>
</dependency>server.port=8083
spring.servlet.multipart.max-file-size=100MB
spring.servlet.multipart.max-request-size=1000MB
#地域节点
aliyun.oss.file.endpoint=oss-cn-beijing.aliyuncs.com
#用户accesskey id
aliyun.oss.file.keyid=xxxxxxxxxx
#用户accesskey secret
aliyun.oss.file.keysecret=xxxxxxxxxx
#相当于是哪个库
aliyun.oss.file.bucketname=xiaozhuya
#文件路径
aliyun.oss.file.filehost=avatarpublic class ConstantPropertiesUtil implements InitializingBean {
@Value("${aliyun.oss.file.endpoint}")
private String endpoint;
@Value("${aliyun.oss.file.keyid}")
private String keyId;
@Value("${aliyun.oss.file.keysecret}")
private String keySecret;
@Value("${aliyun.oss.file.filehost}")
private String fileHost;
@Value("${aliyun.oss.file.bucketname}")
private String bucketName;
public static String END_POINT;
public static String ACCESS_KEY_ID;
public static String ACCESS_KEY_SECRET;
public static String BUCKET_NAME;
public static String FILE_HOST ;
@Override
public void afterPropertiesSet() throws Exception {
END_POINT = endpoint;
ACCESS_KEY_ID = keyId;
ACCESS_KEY_SECRET = keySecret;
BUCKET_NAME = bucketName;
FILE_HOST = fileHost;
}
}public interface FileService {
/**
* 文件上传至阿里云
* @param file
* @return
*/
String upload(MultipartFile file);
void download(String name);
void logDownload(String name, HttpServletResponse response) throws Exception;
String deleteFile(String filename);
}
@Service
public class FileServiceImpl implements FileService {
static String[] TYPESTR = {".png",".jpg",".gif",".jpeg"};
@Override
public String upload(MultipartFile file) {
Boolean flag = false;
for(String type : TYPESTR){
if(StringUtils.endsWithIgnoreCase(file.getOriginalFilename(), type)){
flag = true;
break;
}
}
if(!flag){
/* throw new GuliException(ResultCodeEnum.FILE_UPLOAD_ERROR);*/
return "文件格式不正确";
}
String bucketName = ConstantPropertiesUtil.BUCKET_NAME;
String uploadUrl="";
try {
//2、怎么判断文件内容—> 如果我上传的是rm -rf /* 脚本
BufferedImage image = ImageIO.read(file.getInputStream());
if(image == null){
// throw new GuliException(ResultCodeEnum.FILE_NULL_ERROR);
return "文件内容不正确";
} else{
System.err.println(image.getHeight());
System.err.println(image.getWidth());
}
//判断oss实例是否存在：如果不存在则创建，如果存在则获取
OSSClient ossClient = new OSSClient(ConstantPropertiesUtil.END_POINT,
ConstantPropertiesUtil.ACCESS_KEY_ID,ConstantPropertiesUtil.ACCESS_KEY_SECRET);
if (!ossClient.doesBucketExist(bucketName)) {
//创建bucket
ossClient.createBucket(bucketName);
//设置oss实例的访问权限：公共读
ossClient.setBucketAcl(bucketName, CannedAccessControlList.PublicRead);
}
//获取上传文件流
InputStream inputStream = file.getInputStream();
//构建日期路径：avatar/2019/02/26/文件名
String filePath = new DateTime().toString("yyyy/MM/dd");
//文件名：uuid.扩展名
String original = file.getOriginalFilename();
String fileName = UUID.randomUUID().toString();
String fileType = original.substring(original.lastIndexOf("."));
String newName = fileName + fileType;
String fileUrl = ConstantPropertiesUtil.FILE_HOST + "/" + filePath + "/" + newName;
//文件上传至阿里云
ossClient.putObject(bucketName, fileUrl, inputStream);
// 关闭OSSClient。
ossClient.shutdown();
//获取url地址
uploadUrl = "http://" + bucketName + "." + ConstantPropertiesUtil.END_POINT + "/" + fileUrl;
} catch (IOException e) {
// throw new GuliException(ResultCodeEnum.FILE_UPLOAD_ERROR);
}
return uploadUrl;
}
@Override
public void download(String name) {
OSSClient ossClient = new OSSClient(ConstantPropertiesUtil.END_POINT,
ConstantPropertiesUtil.ACCESS_KEY_ID,ConstantPropertiesUtil.ACCESS_KEY_SECRET);
//构建日期路径：avatar/2019/02/26/文件名
String filePath = new DateTime().toString("yyyy/MM/dd");
File file = new File("E:\\imags.jpg");
ossClient.getObject(new GetObjectRequest(ConstantPropertiesUtil.BUCKET_NAME, ConstantPropertiesUtil.FILE_HOST+"/" + filePath + "/"+name),file );
// 关闭OSSClient。
ossClient.shutdown();
}
@Override
public void logDownload(String name, HttpServletResponse response) throws Exception {
OSSClient ossClient = new OSSClient(ConstantPropertiesUtil.END_POINT,
ConstantPropertiesUtil.ACCESS_KEY_ID,ConstantPropertiesUtil.ACCESS_KEY_SECRET);
//设置响应头为下载
response.setContentType("application/x-download");
//设置下载的文件名
response.addHeader("Content-Disposition", "attachment;fileName=" + name);
response.setCharacterEncoding("UTF-8");
String filePath = new DateTime().toString("yyyy/MM/dd");//上传的路径按理来说需要保持到数据库，显示连接到页面。
String osskey = osskey(ConstantPropertiesUtil.FILE_HOST, filePath, name);
OSSObject ossObject = ossClient.getObject(ConstantPropertiesUtil.BUCKET_NAME,osskey);
InputStream is = ossObject.getObjectContent();
BufferedInputStream bis = null;//定义缓冲流
try {
bis = new BufferedInputStream(is);//把流放入缓存流
OutputStream os = response.getOutputStream();//定义输出流的响应流。
byte[] buffer = new byte[1024];//定义一个字节数
int len;//记录每次读入到cbuf数组中的字符的个数
while ((len = is.read(buffer)) != -1) {//开始输出
System.out.println(len);
System.out.println(buffer);
os.write(buffer,0,len); //从数组中每次写出len个字符
}
} catch (Exception e){
e.printStackTrace();
}finally {
if (bis != null) {
try {
bis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (is != null) {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (ossClient!=null){
// 关闭OSSClient。
ossClient.shutdown();
}
}
}
@Override
public String deleteFile(String filename) {
String bucketName = ConstantPropertiesUtil.BUCKET_NAME;
String fileHost = ConstantPropertiesUtil.FILE_HOST;
String filePath = new DateTime().toString("yyyy/MM/dd");
//建议在方法中创建OSSClient 而不是使用@Bean注入，不然容易出现Connection pool shut down
OSSClient ossClient = new OSSClient(ConstantPropertiesUtil.END_POINT,
ConstantPropertiesUtil.ACCESS_KEY_ID,ConstantPropertiesUtil.ACCESS_KEY_SECRET);
//删除目录中的文件，如果是最后一个文件fileoath目录会被删除。
ossClient.deleteObject(bucketName,fileHost+"/" + filePath + "/"+filename);
try {
} finally {
ossClient.shutdown();
}
return "success";
}
public String osskey(String fileHost,String filePath,String name){
String osskey = fileHost+"/"+filePath+"/"+name;
return osskey;
}
} <dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.7.0</version>
</dependency>
<!--swagger ui-->
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.7.0</version>
</dependency>@Configuration
@EnableSwagger2
public class Swagger2Config {
@Bean
public Docket webApiConfig(){
return new Docket(DocumentationType.SWAGGER_2)
.groupName("webApi")
.apiInfo(webApiInfo())
.select()
//.paths(Predicates.not(PathSelectors.regex("/admin/.*")))
.paths(Predicates.not(PathSelectors.regex("/error.*")))
.build();
}
private ApiInfo webApiInfo(){
return new ApiInfoBuilder()
.title("网站-用户中心API文档")
.description("本文档描述了课程中心微服务接口定义")
.version("1.0")
.contact(new Contact("Helen", "http://xxxxx.com", "xxxx@qq.com"))
.build();
}
}@Api(description = "阿里云文件上传")
@RequestMapping("/oss/file")
@RestController
public class FileController {
@Autowired
FileService fileService;
@ApiOperation(value = "文件上传阿里云")
@PostMapping("upload")
public R upload(MultipartFile file, @RequestParam(value="host", required = false) String host){
if (file!=null){
if(!StringUtils.isEmpty(host)){
ConstantPropertiesUtil.FILE_HOST = host;
}
String uploadurl = fileService.upload(file);
return R.ok().data("url",uploadurl);
}
return R.error().message("文件不能为空！");
}
@ApiOperation(value = "文件下载到本地")
@PostMapping("download/{name}")
public R Download(@PathVariable String name){
fileService.download(name);
return R.ok();
}
@ApiOperation(value = "浏览器文件下载")
@GetMapping(value = "/downloads/{name}")
public void logDownload(@PathVariable String name, HttpServletResponse response) throws Exception {
fileService.logDownload(name, response);
}
@ApiOperation(value = "删除文件")
@GetMapping("/deleteflie/{filename}")
public R DeleteFile(@PathVariable String filename){
String s = fileService.deleteFile(filename);
return R.ok().data("状态:",s);
}@Data
public class R {
private Boolean success;
private Integer code;
private String message;
private Map<String, Object> data = new HashMap<>();
private R(){}
public static R ok(){
R r = new R();
r.setSuccess(ResultCodeEnum.SUCCESS.getSuccess());
r.setCode(ResultCodeEnum.SUCCESS.getCode());
r.setMessage(ResultCodeEnum.SUCCESS.getMessage());
return r;
}
public static R error(){
R r = new R();
r.setSuccess(ResultCodeEnum.UNKNOWN_REASON.getSuccess());
r.setCode(ResultCodeEnum.UNKNOWN_REASON.getCode());
r.setMessage(ResultCodeEnum.UNKNOWN_REASON.getMessage());
return r;
}
public static R setResult(ResultCodeEnum resultCodeEnum){
R r = new R();
r.setSuccess(resultCodeEnum.getSuccess());
r.setCode(resultCodeEnum.getCode());
r.setMessage(resultCodeEnum.getMessage());
return r;
}
public R success(Boolean success){
this.setSuccess(success);
return this;
}
public R message(String message){
this.setMessage(message);
return this;
}
public R code(Integer code){
this.setCode(code);
return this;
}
public R data(String key, Object value){
this.data.put(key, value);
return this;
}
public R data(Map<String, Object> map){
this.setData(map);
return this;
}
}
---------------------------------------------------------------
@Getter
public enum ResultCodeEnum {
SUCCESS(true, 20000,"成功"),
UNKNOWN_REASON(false, 20001, "未知错误"),
BAD_SQL_GRAMMAR(false, 21001, "sql语法错误"),
JSON_PARSE_ERROR(false, 21002, "json解析异常"),
PARAM_ERROR(false, 21003, "参数不正确"),
FILE_UPLOAD_ERROR(false, 21004, "文件上传错误,选择正确的格式"),
EXCEL_DATA_IMPORT_ERROR(false, 21005, "Excel数据导入错误"),
ARITHMETIC_ERROR(false,21111,"算数异常！不能除0"),
TEACHER_NULL_ERROR(false, 23333, "没有该讲师，请重新输入！"),
FILE_NULL_ERROR(false,25555,"文件内容不正确"),
FETCH_PLAYAUTH_ERROR(false,26666,"播放错误")
;
private Boolean success;
private Integer code;
private String message;
private ResultCodeEnum(Boolean success, Integer code, String message) {
this.success = success;
this.code = code;
this.message = message;
}
}
其他的可以自行试。网页下载文件需要在浏览器中输入，不要在swagger中测试
上传到阿里云的OSS上有一个地址访问：https://xiaozhuya.oss-cn-beijing.aliyuncs.com/avatar/2020/07/15/c48fc2af-08e6-4e67-a667-ebbe3d6a4b73.jpg 把他放到页面中的<a> 标签中的src就可以显示啦！
