Retrofit实现图文上传至服务器

2024-02-26 17:08:03 48

前言：现在大多数的项目中都涉及图片+文字上传了,下面请详见实现原理：

开发环境:AndroidStudio

1.引入依赖：

compile'com.squareup.retrofit2:retrofit:2.1.0'

2.网络权限：

3.创建上传对象OkHttpClient：

privatestaticfinalOkHttpClientclient=newOkHttpClient.Builder()
.addInterceptor(newInterceptor(){
@Override
publicResponseintercept(Chainchain)throwsIOException{
Requestrequest=chain
.request()
.newBuilder()
.build();
returnchain.proceed(request);
}
})
.readTimeout(10,TimeUnit.SECONDS)//设置读取超时时间
.writeTimeout(10,TimeUnit.SECONDS)//设置写的超时时间
.connectTimeout(15,TimeUnit.SECONDS)//设置连接超时时间
.build();

4.上传图片的公有方法：

privatesynchronizedfinalstaticvoiduploadImgAndParameter(Mapmap,Stringurl,
finalUIDataListenerlistener){
//mImgUrls为存放图片的url集合
MultipartBody.Builderbuilder=newMultipartBody.Builder().setType(MultipartBody.FORM);
if(null!=map){
for(Map.Entryentry:map.entrySet()){
if(entry.getValue()!=null){
if(entry.getValue()instanceofFile){
Filef=(File)entry.getValue();
builder.addFormDataPart(entry.getKey(),f.getName(),RequestBody.create(MEDIA_TYPE_PNG,f));
}else{
builder.addFormDataPart(entry.getKey(),entry.getValue().toString());
}
}
}
}
//创建RequestBody
RequestBodybody=builder.build();

//MultipartBodyrequestBody=builder.build();
//构建Request请求
finalRequestrequest=newRequest.Builder()
.url(url)//地址
.post(body)//添加请求体
//.post(requestBody)//添加请求体
.build();
client.newCall(request).enqueue(newokhttp3.Callback(){
@Override
publicvoidonResponse(Callcall,finalResponseresponse)throwsIOException{
if(response.isSuccessful()){//判断是否成功
finalStringdata=response.body().string();//string()仅可调用一次。否则报IllegalStateException:closed异常
Log.i("file1","上传照片成功-->"+data);
onSuccess(listener,data);
call.cancel();//上传成功取消请求释放内存
}
}
@Override
publicvoidonFailure(Callcall,finalIOExceptione){
Log.i("file2","上传失败-->"+e.getMessage());
Stringmsg=e.getMessage();
if(msg==null||msg.equals("timeout")){
onError(listener,"网络不稳定请求超时!");
}else{
onError(listener,e.getMessage());
}
call.cancel();//上传失败取消请求释放内存
}
});
}

//注意：添加手机图片，别忘了添加SD卡权限

5.全部代码：

publicclassHttpUtil{
privatestaticfinalHandlerhandler=newHandler(Looper.getMainLooper());
privatestaticfinalMediaTypeMEDIA_TYPE_PNG=MediaType.parse("image/*");
privatestaticfinalOkHttpClientclient=newOkHttpClient.Builder()
.addInterceptor(newInterceptor(){
@Override
publicResponseintercept(Chainchain)throwsIOException{
Requestrequest=chain
.request()
.newBuilder()
.build();
returnchain.proceed(request);
}
})
.readTimeout(10,TimeUnit.SECONDS)//设置读取超时时间
.writeTimeout(10,TimeUnit.SECONDS)//设置写的超时时间
.connectTimeout(15,TimeUnit.SECONDS)//设置连接超时时间
.build();
/**
*实例--》添加商品
*/
publicstaticvoidaddCoupon(intshopperId,StringshopperName,
Filefile,finalUIDataListenerlistener){
Stringurl="shopappajx/shopAppCouponAction_saveCoupon.htm";
Mapmap=newHashMap<>();
map.put("shopperId",shopperId);
map.put("shopperName",shopperName);
map.put("couponImage",file);//商品图片
uploadImgAndParameter(map,url,listener);
}
//上传图片共有方法
privatesynchronizedfinalstaticvoiduploadImgAndParameter(Mapmap,Stringurl,
finalUIDataListenerlistener){
//mImgUrls为存放图片的url集合
MultipartBody.Builderbuilder=newMultipartBody.Builder().setType(MultipartBody.FORM);
if(null!=map){
for(Map.Entryentry:map.entrySet()){
if(entry.getValue()!=null){
if(entry.getValue()instanceofFile){
Filef=(File)entry.getValue();
builder.addFormDataPart(entry.getKey(),f.getName(),RequestBody.create(MEDIA_TYPE_PNG,f));
}else{
builder.addFormDataPart(entry.getKey(),entry.getValue().toString());
}
}
}
}
//创建RequestBody
RequestBodybody=builder.build();

//MultipartBodyrequestBody=builder.build();
//构建Request请求
finalRequestrequest=newRequest.Builder()
.url(url)//地址
.post(body)//添加请求体
//.post(requestBody)//添加请求体
.build();
client.newCall(request).enqueue(newokhttp3.Callback(){
@Override
publicvoidonResponse(Callcall,finalResponseresponse)throwsIOException{
if(response.isSuccessful()){//判断是否成功
finalStringdata=response.body().string();//string()仅可调用一次。否则报IllegalStateException:closed异常
Log.i("file1","上传照片成功-->"+data);
onSuccess(listener,data);
call.cancel();//上传成功取消请求释放内存
}
}
@Override
publicvoidonFailure(Callcall,finalIOExceptione){
Log.i("file2","上传失败-->"+e.getMessage());
Stringmsg=e.getMessage();
if(msg==null||msg.equals("timeout")){
onError(listener,"网络不稳定请求超时!");
}else{
onError(listener,e.getMessage());
}
call.cancel();//上传失败取消请求释放内存
}
});
}
privatefinalstaticvoidonSuccess(finalUIDataListenerlistener,finalStringdata){
handler.post(newRunnable(){
publicvoidrun(){
//需要在主线程的操作。
listener.onSuccess(data);
}
});
}
privatefinalstaticvoidonError(finalUIDataListenerlistener,finalStringmsg){
if(null!=listener){
handler.post(newRunnable(){
publicvoidrun(){
//需要在主线程的操作。
listener.onFailure(msg);
}
});
}
}
publicinterfaceUIDataListener{
//网络请求成功
voidonSuccess(Stringdata);
//网络请求失败
voidonFailure(StringerrorMassage);
}
}

以上就是本文的全部内容，希望本文的内容对大家的学习或者工作能带来一定的帮助，同时也希望多多支持毛票票！

Retrofit实现图文上传至服务器

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