基于okhttp的异步请求

抽空封装了一下基于okHttp的网络请求，刚刚封装好get,post, download,upload请求，不需要创建线程，支持Json自动转换 。

Get和Post(文件上传也属于Post)主要分俩个步骤：

1.通过HttpRequestBuilder来创建请求实体对象。

2.通过HttpUtil的sendRequest方法来发送请求，并且使用ResultCallBack来接受返回内容，这个步骤中成功时，自动将json转换为实体，若失败会执行ResultCallBack的onError 方法，并传递HttpException,这个对象中包含http错误代码，比如404,500等。

get请求方式：

private void getSample() {

HttpRequest request = new HttpRequestBuilder().url(url)
.addHeader("cookie", "df").addParams("key", "value")
.method(HttpMethod.GET).build();

HttpUtil.getInstance().sendRequest(request, new ResultCallBack<Result>() {

@Override
public void onResponse(Result response) {
// TODO Auto-generated method stub
textView.setText(response.getData().getName());
}

@Override
public void onError(Request request, HttpException httpException) {
// TODO Auto-generated method stub
textView.setText("requestCode:"+httpException.getResponseCode()+"  ErrorMessage:"+httpException.getMessage());
}
});
}

post请求:

private void postSample() {

HttpRequest request = new HttpRequestBuilder()
.url("http://www.oschina.net/action/user/hash_login")
.addHeader("cookie", "df").addParams("email", "xxxxxxxxx")
.addParams("pwd", "xxxxxxxxxxxxxxxxx")
.method(HttpMethod.POST).build();

HttpUtil.getInstance().sendRequest(request,
new ResultCallBack<String>() {

@Override
public void onError(Request request,
HttpException httpException) {
// TODO Auto-generated method stub

}

@Override
public void onResponse(String response) {
// TODO Auto-generated method stub
textView.setText(response);
}
});

}

文件上传：

private void fileUploadSample() {
if (!TextUtils.isEmpty(textView.getText())) {
File file = new File(textView.getText().toString());
final String url = "服务器地址。。。";

HttpRequest request = new HttpRequestBuilder()
.url(url)
.method(HttpMethod.POST)
.addFile(
new FileDiscription(file)
.setUploadPrograssListener(fileUploadListener))
.build();

HttpUtil.getInstance().sendRequest(request,
new ResultCallBack<String>() {

@Override
public void onError(Request request,
HttpException httpException) {
// TODO Auto-generated method stub

}

@Override
public void onResponse(String response) {
// TODO Auto-generated method stub
textView.setText(response);
}
});
}
}

文件下载是Get请求，只不过没有使用ResultCallBack而是使用了DownloadCallBack，可以监听下载进度，有完成和失败的回调。代码如下：

private void downLoad(){
HttpRequest request= new HttpRequestBuilder()
.url("http://img.taopic.com/uploads/allimg/130501/240451-13050106450911.jpg")
.method(HttpMethod.GET).downLoadPath(filePath, String.valueOf(new Date().getTime())+".jpg").build();

HttpUtil.getInstance().downLoad(request, new DownLoadCallBack() {

@Override
public void onDownLoading(int prograss) {
// TODO Auto-generated method stub
textView.setText(prograss+"%");
progressBar.setProgress(prograss);
}

@Override
public void onDownLoadSuccess() {
// TODO Auto-generated method stub
textView.setText("down load success");
}

@Override
public void onDownLoadFail(HttpException ex) {
// TODO Auto-generated method stub
textView.setText(ex.getMessage());
}

});
}

源码地址：
https://github.com/YounMario/HttpDemo