Android Retrofit 2.0框架上传图片解决方案（一张与多张的处理）

深藏阁楼爱情的钟 2022-08-20 04:17 36阅读 0赞

#  **标题： Android Retrofit 2.0框架上传图片解决方案（一张与多张的处理）** #

##  1.单张图片的上传 ##

/**
             * 上传一张图片
             * @param description
             * @param imgs
             * @return
             */
            @Multipart
            @POST("/upload")
            Call<String> uploadImage(@Part("fileName") String description,
                                     @Part("file\"; filename=\"image.png\"")RequestBody imgs);

##   2.多张图片的上传 ##

/**
             * 上传三张图片
             * @param description
             * @param imgs
             * @param imgs1
             * @param imgs3
             * @return
             */
            @Multipart
            @POST("/upload")
            Call<String> uploadImage(@Part("fileName") String description,
                                     @Part("file\"; filename=\"image.png\"")RequestBody imgs,
                                     @Part("file\"; filename=\"image.png\"")RequestBody imgs1,
                                     @Part("file\"; filename=\"image.png\"")RequestBody imgs3);

注意：目前是提供传3张，要想多上传目前我发现的方法就是想要多传一张，就多增加一个参数  
@Part("file\\"; filename=\\"image.png\\"")RequestBody imgs，以此类推。  
  
大家看到上面觉得写法很漏，但是用于能力有限，只能想到这样。用Java中的可变参数解决之后，就只能传一张。不能多张。

@Multipart
            @POST("/upload")
            Call<String> uploadImage(@Part("fileName") String description,
                                     @Part("file\"; filename=\"image.png\"")RequestBody ...imgs);

调用：

Call<String> call = apiManager.uploadImage( m[0],requestBody1,requestBody2,null);

这样写看上去很是高端，不幸的是只能传一张

## 3.最后是实现胡过程 ##

3.1创建FileUploadService接口

public interface FileUploadService {
        /** * 上传一张图片 * @param description * @param imgs * @return */ @Multipart
        @POST("/upload")
        Call<String> uploadImage(@Part("fileName") String description,
                                 @Part("file\"; filename=\"image.png\"")RequestBody imgs);
    
        /** * 上传三张图片 * @param description * @param imgs * @param imgs1 * @param imgs3 * @return */ @Multipart
        @POST("/upload")
        Call<String> uploadImage(@Part("fileName") String description,
                                 @Part("file\"; filename=\"image.png\"")RequestBody imgs,
                                 @Part("file\"; filename=\"image.png\"")RequestBody imgs1,
                                 @Part("file\"; filename=\"image.png\"")RequestBody imgs3);
    }

3.2创建Retrofit对象

private static final Retrofit sRetrofit = new Retrofit .Builder()
                .baseUrl(ENDPOINT)
                .addConverterFactory(GsonConverterFactory.create())
    //            .addCallAdapterFactory(RxJavaCallAdapterFactory.create()) // 使用RxJava作为回调适配器
                .build();
    
        private static final FileUploadService apiManager = sRetrofit.create(FileUploadService.class);

3.3调用上传的方法

public static void upload(String path){
    
        String descriptionString = "hello, this is description speaking";
    
        String[] m = new String[2];
        m[0]= "share.png";
        m[1]=  "Screenshot_20160128-140709.png";
        File[]  ssssss= new  File[2];
        File file1 = new File("/storage/emulated/0/sc/share.png");
        File file = new File("/storage/emulated/0/Pictures/ScreenShots/Screenshot_20160128-140709.png");
        ssssss[0]=file;
        ssssss[0]=file1;
        RequestBody requestBody[] = new RequestBody[3];
        RequestBody requestBody1 =
                RequestBody.create(MediaType.parse("multipart/form-data"), file);
        RequestBody requestBody2 =
                RequestBody.create(MediaType.parse("multipart/form-data"), file1);
        requestBody[0]=requestBody1;
        requestBody[1]=requestBody2;
        Call<String> call = apiManager.uploadImage( m[0],requestBody1,requestBody2,null);
        call.enqueue(new Callback<String>() {
            @Override
            public void onResponse(Response<String> response, Retrofit retrofit) {
                Log.v("Upload", response.message());
                Log.v("Upload", "success");
            }
    
            @Override
            public void onFailure(Throwable t) {
                Log.e("Upload", t.toString());
            }
        });
    
    }

## 4.服务器段代码： ##

服务器用的是struts接收：

@Controller
    public class GetToken extends  ActionSupport {
    	
    /**
    	 * 
    	 */
    	private static final long serialVersionUID = 1L;
    	private File[] file;
    	private String[] fileName;
    	public File[] getFile() {
    		return file;
    	}
    	public void setFile(File[] file) {
    		this.file = file;
    	}
    	public String[] getFileName() {
    		return fileName;
    	}
    	public void setFileName(String[] fileName) {
    		this.fileName = fileName;
    	}
    
    	@Action("/upload")
    	public void login()  {
    		System.out.println("------"+Arrays.toString(file));
    		System.out.println("------"+Arrays.toString(fileName));
    	}
    	
    	
    	
    }

上传胡结果：

\------\[\\tmp\\upload\_\_4348b3f0\_1528c3d9735\_\_8000\_00000038.tmp,\\tmp\\upload\_\_4348b3f0\_1528c3d9735\_\_8000\_00000040.tmp\]  
\------\["share.png"\]  
2016-1-29 16:59:04 com.opensymphony.xwork2.util.logging.commons.CommonsLogger info  
信息: Removing file file \\tmp\\upload\_\_4348b3f0\_1528c3d9735\_\_8000\_00000038.tmp

2016-1-29 16:59:04 com.opensymphony.xwork2.util.logging.commons.CommonsLogger info  
信息: Removing file file \\tmp\\upload\_\_4348b3f0\_1528c3d9735\_\_8000\_00000040.tmp

总共就这些吧。有问题大家在下面说。QQ1561281670

[代码下载地址][Link 1]

追加：

多图上传的一种简单那写法：

</pre><pre name="code" class="java">public static void uploadMany(ArrayList<String> paths,String desp){
            Map<String,RequestBody> photos = new HashMap<>();
            if (paths.size()>0) {
                for (int i=0;i<paths.size();i++) {
                    photos.put("photos"+i+"\"; filename=\"icon.png",  RequestBody.create(MediaType.parse("multipart/form-data"), new File(paths.get(i))));
                }
            }
            Call<String> stringCall = apiManager.uploadImage(desp, photos);
            stringCall.enqueue(new Callback<String>() {
                @Override
                public void onResponse(Call<String> call, Response<String> response) {
                    Log.d(TAG, "onResponse() called with: " + "call = [" + call + "], response = [" + response + "]");
                }
    
                @Override
                public void onFailure(Call<String> call, Throwable t) {
                    Log.d(TAG, "onFailure() called with: " + "call = [" + call + "], t = [" + t + "]");
                }
            });
        }

这样洗是不是比上面的好多了。如果再有什么好的写法，请提出来。我在改进

[Link 1]: https://github.com/lidong1665/AndroidRapidLibrary