OkHttp3二次封装和拦截器
只包含Get和Post请求
Okhttp3依赖包
//前两个是Okhttp3依赖
compile 'com.squareup.okio:okio:1.5.0' //不写不加载数据
compile 'com.squareup.okhttp3:okhttp:3.2.0'
//拦截器依赖
compile 'com.squareup.okhttp3:logging-interceptor:3.4.1'
以下为代码
二次封装采用的是单例模式
public class OkHttp3Utils {
/**
* 懒汉 安全 加同步
* 私有的静态成员变量 只声明不创建
* 私有的构造方法
* 提供返回实例的静态方法
*/
private static OkHttpClient okHttpClient = null;
public OkHttp3Utils() {
}
//通过单例模式获取实例
public static OkHttpClient getInstance() {
if (okHttpClient == null) {
//同步代码
synchronized (OkHttp3Utils.class) {
if (okHttpClient == null) {
//缓存路径
File sdcache = new File(Environment.getExternalStorageDirectory(), "okhttpCache");
int cacheSize = 10 * 1024 * 1024;
//okhttp拦截器
HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor(new HttpLoggingInterceptor.Logger() {
@Override
public void log(String message) {
Log.i("msg", message.toString());
}
});
//拦截器日志分类
httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
okHttpClient = new OkHttpClient.Builder().connectTimeout(15, TimeUnit.MINUTES)
.addInterceptor(httpLoggingInterceptor)
.writeTimeout(20, TimeUnit.SECONDS).readTimeout(20, TimeUnit.SECONDS)
.cache(new Cache(sdcache.getAbsoluteFile(), cacheSize)).build();
}
}
}
return okHttpClient;
}
/**
* get请求方式
*
* @param url 请求地址
* @param callback 回调接口
*/
public static void doGet(String url, Callback callback) {
//获取请求对象的实例
OkHttpClient okHttpClient = OkHttp3Utils.getInstance();
//创建Request
Request request = new Request.Builder().url(url).build();
//得到Call
Call call = okHttpClient.newCall(request);
//执行异步请求
call.enqueue(callback);
}
/**
* post请求方式
*
* @param url 请求地址
* @param params 请求体
* @param callback 接口回调
*/
public static void doPost(String url, Map params, Callback callback) {
//获取请求对象的实例
OkHttpClient okHttpClient = OkHttp3Utils.getInstance();
//3.x版本post请求换成FormBody 封装键值对参数
FormBody.Builder builder = new FormBody.Builder();
//遍历map集合给请求体添加值
for (String key : params.keySet()) {
builder.add(key, params.get(key));
}
//创建Request
Request request = new Request.Builder().url(url).post(builder.build()).build();
//获取call
Call call = okHttpClient.newCall(request);
//异步请求
call.enqueue(callback);
}
/**
* 上传文件
*
* @param url 接口地址
* @param file 文件
* @param fileName 文件名
*/
public static void loadFile(String url, File file, String fileName,Callback callback) {
//创建OkHttpClient请求对象
OkHttpClient okHttpClient = getInstance();
//创建RequestBody 封装file参数
RequestBody fileBody = RequestBody.create(MediaType.parse("application/octet-stream"), file);
//创建RequestBody 设置类型等
RequestBody requestBody = new MultipartBody.Builder().setType(MultipartBody.FORM).addFormDataPart("file", fileName, fileBody).build();
//创建Request
Request request = new Request.Builder().url(url).post(requestBody).build();
Call call = okHttpClient.newCall(request);
call.enqueue(callback);
}
/**
* 上传json字符
*
* @param url 接口地址
* @param jsonParams Json串
* @param callback 接口回调
*/
public static void doPostJson(String url, String jsonParams, Callback callback) {
RequestBody requestBody = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), jsonParams);
Request request = new Request.Builder().url(url).post(requestBody).build();
Call call = getInstance().newCall(request);
call.enqueue(callback);
}
/**
* 下载
*
* @param context
* @param url 下载地址
* @param saveDir 保存的位置
*/
public static void downFile(final Activity context, final String url, final String saveDir) {
//创建Request
Request request = new Request.Builder().url(url).build();
//创建Call
Call call = getInstance().newCall(request);
//同步
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Log.i("xxx", e.toString());
}
@Override
public void onResponse(Call call, final Response response) throws IOException {
InputStream is = null;
byte[] buf = new byte[2048];
int len = 0;
FileOutputStream fos = null;
try {
is = response.body().byteStream();
//apk保存路径
final String fileDir = isExistDir(saveDir);
//文件
File file = new File(fileDir, getNameFromUrl(url));
context.runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(context, "下载成功:" + fileDir + "," + getNameFromUrl(url), Toast.LENGTH_SHORT).show();
}
});
fos = new FileOutputStream(file);
while ((len = is.read(buf)) != -1) {
fos.write(buf, 0, len);
}
fos.flush();
//apk下载完成后 调用系统的安装方法
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
context.startActivity(intent);
} catch (IOException e) {
e.printStackTrace();
} finally {
if (is != null) is.close();
if (fos != null) fos.close();
}
}
});
}
/**
* @param saveDir
* @return
* @throws IOException 判断下载目录是否存在
*/
public static String isExistDir(String saveDir) throws IOException {
// 下载位置
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
File downloadFile = new File(Environment.getExternalStorageDirectory(), saveDir);
if (!downloadFile.mkdirs()) {
downloadFile.createNewFile();
}
String savePath = downloadFile.getAbsolutePath();
Log.e("savePath", savePath);
return savePath;
}
return null;
}
/**
* @param url
* @return 从下载连接中解析出文件名
*/
private static String getNameFromUrl(String url) {
return url.substring(url.lastIndexOf("/") + 1);
}
}
这是一个判断网络连接工具类
记得要在androidmanifest添加网络管理权限