/** 从结果中获取字符串，一旦获取，会自动关流，并且把字符串保存，方便下次获取 */
public String getString() {
if (!TextUtils.isEmpty(mStr)) {
return mStr;
}
InputStream inputStream = getInputStream();
ByteArrayOutputStream out = null;
if (inputStream != null) {
try {
out = new ByteArrayOutputStream();
byte[] buffer = new byte[1024 * 4];
int len = -1;
while ((len = inputStream.read(buffer)) != -1) {
out.write(buffer, 0, len);
}
byte[] data = out.toByteArray();
mStr = new String(data, "utf-8");
} catch (Exception e) {
LogUtils.e(e);
} finally {
IOUtils.closeQuietly(out);
close();
}
}
return mStr;
}
/** 获取流，需要使用完毕后调用close方法关闭网络连接 */
public InputStream getInputStream() {
if (mIn == null && getCode() < 300) {
HttpEntity entity = mResponse.getEntity();
try {
mIn = entity.getContent();
} catch (Exception e) {
LogUtils.e(e);
}
}
return mIn;
}
/** 执行网络访问 */
private static HttpResult execute(String url, HttpRequestBase requestBase) {
boolean isHttps = url.startsWith("https://"); // 判断是否需要采用https
AbstractHttpClient httpClient = HttpClientFactory.create(isHttps);
HttpContext httpContext = new SyncBasicHttpContext(new BasicHttpContext());
HttpRequestRetryHandler retryHandler = httpClient.getHttpRequestRetryHandler(); // 获取重试机制
int retryCount = 0;
boolean retry = true;
while (retry) {
try {
HttpResponse response = httpClient.execute(requestBase, httpContext); // 访问网络
if (response != null) {
return new HttpResult(response, httpClient, requestBase);
}
} catch (Exception e) {
IOException ioException = new IOException(e.getMessage());
retry =
retryHandler.retryRequest(
ioException, ++retryCount, httpContext); // 把错误异常交给重试机制，以判断是否需要采取从事
LogUtils.e(e);
}
}
return null;
}