网络不通错误No buffer space available解决方案分享

finally {
            if (is != null) {
                is.close();
            }
            if (postMethod != null) {
                postMethod.releaseConnection();
            }
        }

finally {
            if (is != null) {
                try{
                is.close();
                }catch(Exception e){
                    
                }
            }
            if(postMethod!=null)
                postMethod.releaseConnection();
            if(httpClient!=null)
                httpClient.getHttpConnectionManager().closeIdleConnections(0);
        }