Volley实现图片上传

在网上找的关于Volley上传文件的方法，(当然可以用来传图片)

转载自http://blog.youkuaiyun.com/com314159/article/details/39853865

说的很详细，我拿来尝试了一下，上传图片挺好用的

鉴于已经说的很详细了，我就不再累述，直接贴我实现的代码。

别忘了添加原文作者所说的三个文件MultiPartRequest.java,MultiPartStack.java,MultiPartStringRequest.java

private static RequestQueue mSingleQueue;

mSingleQueue = Volley.newRequestQueue(this, new MultiPartStack());

实现的方法：

private void UploadFile(){
   // showProgress();
    Map<String, File> files = new HashMap<String, File>();
    files.put("image1", new File(
            "/sdcard/a1.jpg"));
    files.put("image2", new File(
            "/sdcard/a2.jpg"));
    files.put("image3", new File(
            "/sdcard/a3.jpg"));
    Map<String, String> params = new HashMap<String, String>();
    params.put("token", "DJrlPbpJQs21rv1lP41yiA==");
    String uri = "http://192.168.247.1:9060/Uploadfile/uploadServlet";
    addPutUploadFileRequest(
            uri,
            files, params, mResonseListenerString, mErrorListener, null);
}
Response.Listener<String> mResonseListenerString = new Response.Listener<String>() {
    @Override
    public void onResponse(String response) {
        //返回的数据
        Toast.makeText(MainActivity.this,"返回的数据:"+response,Toast.LENGTH_SHORT).show();
    }
};

Response.ErrorListener mErrorListener = new Response.ErrorListener() {
    @Override
    public void onErrorResponse(VolleyError error) {
        if (error != null) {
            if (error.networkResponse != null)
                Log.i(TAG, " error " + new String(error.networkResponse.data));
        }
    }
};

public static void addPutUploadFileRequest(final String url,
                                           final Map<String, File> files, final Map<String, String> params,
                                           final Response.Listener<String> responseListener, final Response.ErrorListener errorListener,
                                           final Object tag) {
    if (null == url || null == responseListener) {
        return;
    }

    MultiPartStringRequest multiPartRequest = new MultiPartStringRequest(
            Request.Method.POST, url, responseListener, errorListener) {
        @Override
        public Map<String, File> getFileUploads() {
            return files;
        }
        @Override
        public Map<String, String> getStringUploads() {
            return params;
        }

    };
  //  hiddenProgress();
    mSingleQueue.add(multiPartRequest);
}

最后需要注意的一点是：在Android Studio中添加三个jar包时，可能会发生错误，需要在build.gradle添加如下代码：

packagingOptions {
    exclude 'META-INF/DEPENDENCIES.txt'
    exclude 'META-INF/LICENSE.txt'
    exclude 'META-INF/NOTICE.txt'
    exclude 'META-INF/NOTICE'
    exclude 'META-INF/LICENSE'
    exclude 'META-INF/DEPENDENCIES'
    exclude 'META-INF/notice.txt'
    exclude 'META-INF/license.txt'
    exclude 'META-INF/dependencies.txt'
    exclude 'META-INF/LGPL2.1'
}

添加后的结果是这样的：

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.1"

    defaultConfig {
        applicationId "dao.d.volley"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    packagingOptions {
        exclude 'META-INF/DEPENDENCIES.txt'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/notice.txt'
        exclude 'META-INF/license.txt'
        exclude 'META-INF/dependencies.txt'
        exclude 'META-INF/LGPL2.1'
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

最后，附上上一篇写的Volley的GET,POST网络请求和这次的源码，以及服务端的源码。下载地址