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HttpClient SockettTimeoutException处理

socket-timeout-exception httpclient java

JoonT · 技术社区 · 6 年前

我从中获取数据 REST API server 使用 HttpClient 。
现在,当我在10秒内无法从 API Server 。
所以我就这样做了

HttpClient httpClient = new DefaultHttpClient();

HttpParams httpParams = httpClient.getParams();
HttpConnectionParams.setConnectionTimeout(httpParams, 10000);
HttpConnectionParams.setSoTimeout(httpParams, 10000);

HttpPost httpPost = new HttpPost("api server address");
httpPost.setParams(...);

HttpResponse response;
try{
    response = httpClient.execute(httpPost);    
} catch(SocketTimeoutException e){
    httpPost.setParams(...); // change param
    response = httpClient.execute(httpPost);
}

事情发生的样子
invalid use of singleclientconnmanager: connection still allocated.
这很有道理,但我不知道如何处理。

1 回复 | 直到 6 年前

piy26 6 年前

问题所在

invalid use of singleclientconnmanager: connection still allocated.

每当控制块进入异常块(即存在任何异常)时,调用execute()方法两次后发生。

try{
    // First Call
    response = httpClient.execute(httpPost);    
} catch(SocketTimeoutException e){
    httpPost.setParams(...); // change param
    //Second Call
    response = httpClient.execute(httpPost);
}

处理这个问题的优雅方法是使用HTTPRequestRetryHandler http://hc.apache.org/httpcomponents-client-ga/tutorial/html/fundamentals.html#d4e280