我有一个用于黑莓的 Java 应用程序，使用 Java Plug-in for Eclipse 创建。我想通过 Blackberry mds 在网络服务器上调用网络服务。我使用的代码有效，但不稳定。这意味着我连续 100 次成功地与 Web 服务器取得联系，但过了一会儿，连接断开了。Blackberry 的日志文件很多且不易阅读，但至少我觉得“无效套接字”这句话对我不利。
我在我的代码中使用 StreamConnection 类，但我从一些示例代码中看到使用 httpConnection 代替。任何人都知道何时使用 HttpConnection 而不是 StreamConnection？
我在这里粘贴我的代码。也许你们中的一些人看到了我应该做的不同的事情：
private boolean sendStatusMessage(String phoneNumber, String status) {
StreamConnection conn = null;
OutputStream output = null; //mari added
try {
String body = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:i3w=\"http://I3WebAction\">"
+ "<soapenv:Header/>"
+ "<soapenv:Body>"
+ "<i3w:I3SetMobileStatus><i3w:p_Status>"
+ status
+ "</i3w:p_Status><i3w:p_PhoneNumber>"
+ phoneNumber
+ "</i3w:p_PhoneNumber>"
+ "</i3w:I3SetMobileStatus></soapenv:Body></soapenv:Envelope>";
String URL = "socket://" + soapServer + ":" + port
+ ";deviceside=false";
conn = (StreamConnection) Connector.open(URL);
//OutputStream output = conn.openOutputStream();
output = conn.openOutputStream();
OutputStreamWriter writer = new OutputStreamWriter(output);
writer.write("POST /SOAPListener/I3SOAPISAPIU.dll HTTP/1.1\r\n");
writer.write("Accept-Encoding: gzip,deflate\r\n");
writer.write("Content-Type: text/xml;charset=UTF-8\r\n");
writer.write("SOAPAction: \"http://I3WebAction/I3SetMobileStatus\"\r\n");
writer.write("User-Agent: Jakarta Commons-HttpClient/3.1\r\n");
writer.write("Host: lvkdb01\r\n");
writer.write("Content-Length: " + body.length() + "\r\n");
writer.write("\r\n");
writer.write(body);
writer.flush();
writer.close(); //mari added
} catch (Exception e) {
Dialog.alert(e.getMessage());
return false;
} finally {
try {
// Close stream regardless of exceptions and return-points
output.close();
} catch (IOException e) {
// If closing the stream causes exception, the stream is most
// likely not open or available. We display an error message,
// and continues the program.
Dialog.alert(e.getMessage());
return false;
}
try {
// Close stream regardless of exceptions and return-points
conn.close();
} catch (IOException e) {
// If closing the stream causes exception, the stream is most
// likely not open or available. We display an error message,
// and continues the program.
Dialog.alert(e.getMessage());
return false;
}
}
return true;
}
我感谢任何关于为什么此代码运行不稳定的评论或想法。