android实现HttpClient的调用,处理多线程问题
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HttpClient提供了创建线程安全对象的API。
解决多线程问题
public class CustomerHttpClient {
private static final String CHARSET = HTTP.UTF_8;
private static HttpClient customerHttpClient;
private CustomerHttpClient() {
}
public static synchronized HttpClient getHttpClient() {
if (null == customerHttpClient) {
HttpParams params = new BasicHttpParams();
// 设置一些基本参数
HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
HttpProtocolParams.setContentCharset(params,
CHARSET);
HttpProtocolParams.setUseExpectContinue(params, true);
HttpProtocolParams
.setUserAgent(
params,
"Mozilla/5.0(Linux;U;Android 2.2.1;en-us;Nexus One Build.FRG83) "
+ "AppleWebKit/553.1(KHTML,like Gecko) Version/4.0 Mobile Safari/533.1");
// 超时设置
/* 从连接池中取连接的超时时间 */
ConnManagerParams.setTimeout(params, 1000);
/* 连接超时 */
HttpConnectionParams.setConnectionTimeout(params, 2000);
/* 请求超时 */
HttpConnectionParams.setSoTimeout(params, 4000);
// 设置我们的HttpClient支持HTTP和HTTPS两种模式
SchemeRegistry schReg = new SchemeRegistry();
schReg.register(new Scheme("http", PlainSocketFactory
.getSocketFactory(), 80));
schReg.register(new Scheme("https", SSLSocketFactory
.getSocketFactory(), 443));
// 使用线程安全的连接管理来创建HttpClient
ClientConnectionManager conMgr = new ThreadSafeClientConnManager(
params, schReg);
customerHttpClient = new DefaultHttpClient(conMgr, params);
}
return customerHttpClient;
}
}
解决多线程问题
public class CustomerHttpClient {
private static final String CHARSET = HTTP.UTF_8;
private static HttpClient customerHttpClient;
private CustomerHttpClient() {
}
public static synchronized HttpClient getHttpClient() {
if (null == customerHttpClient) {
HttpParams params = new BasicHttpParams();
// 设置一些基本参数
HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
HttpProtocolParams.setContentCharset(params,
CHARSET);
HttpProtocolParams.setUseExpectContinue(params, true);
HttpProtocolParams
.setUserAgent(
params,
"Mozilla/5.0(Linux;U;Android 2.2.1;en-us;Nexus One Build.FRG83) "
+ "AppleWebKit/553.1(KHTML,like Gecko) Version/4.0 Mobile Safari/533.1");
// 超时设置
/* 从连接池中取连接的超时时间 */
ConnManagerParams.setTimeout(params, 1000);
/* 连接超时 */
HttpConnectionParams.setConnectionTimeout(params, 2000);
/* 请求超时 */
HttpConnectionParams.setSoTimeout(params, 4000);
// 设置我们的HttpClient支持HTTP和HTTPS两种模式
SchemeRegistry schReg = new SchemeRegistry();
schReg.register(new Scheme("http", PlainSocketFactory
.getSocketFactory(), 80));
schReg.register(new Scheme("https", SSLSocketFactory
.getSocketFactory(), 443));
// 使用线程安全的连接管理来创建HttpClient
ClientConnectionManager conMgr = new ThreadSafeClientConnManager(
params, schReg);
customerHttpClient = new DefaultHttpClient(conMgr, params);
}
return customerHttpClient;
}
}
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