通过 OTA 安装 J2Me
我正在尝试通过 OTA 安装我的应用程序 midlet。我使用 apache tomcat 6 作为 ota 服务器，并在 webapps 文件夹中创建一个小项目，其中包含 application.jad、application.jar 和welcome.html，其中有一个指向 .jad 文件的链接。我使用 sun 模拟器测试了安装，它安装得很好。
但是，当我尝试通过输入以下网址在移动设备上安装时：serverurl:8080/JMEAPP/welcome.html，它给出错误“无法继续您请求的操作”。错误号是 502。
令人沮丧的是安装可以在一部手机 (SH06A) 上进行。我测试的所有其他手机都属于日本第三大移动网络提供商（我不知道是否可以在这里提及品牌名称，所以我没有，很抱歉）。所有这些手机都出现上述错误（但它们都不是诺基亚，我们通过蓝牙将其安装在诺基亚手机上，它可以工作。）。但他们似乎都没有读过 jad 文件。
因此，您能告诉我这里的问题吗？这是安全问题吗？或者网络提供商可以阻止他们的手机，以便我们无法在他们的手机上安装任何东西？或者这是一个兼容性问题？
我找不到这个问题的原因。
I'm trying to install my application midlet via OTA. I used apache tomcat 6 as the ota server, and create a small project in the webapps folder which contains application.jad, application.jar and welcome.html which has a link point to the .jad file. I tested the installation using sun emulator it installs just fine.
But when I tried to install on a mobile by typing the url: serverurl:8080/JMEAPP/welcome.html, it gives an error saying "Operation you request cannot be proceeded". Error number is 502.
Frustrating thing is installation works on one phone (SH06A). In all other phones I tested belongs to japan's third largest mobile network provider (I dunno whether it's ok to mention brand names here, so I didn't, I'm sorry). All of those phones gives above mentioned error (But none of them are NOKIA, we installed it on a nokia phone by bluetooth, it works.). But all of them didn't even seems to read the jad file.
Therefore, can you one tell me the issue here. Is it a security issue? or can network providers can block their phones so that we cannot install anything on their phones? Or is this a compatibility issue?
I couldn't find a reason for this issue.
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502 是一条线索。这表明您的手机和服务器之间出现问题，可能是 MNO 网络和服务器之间的位出现问题。如果您只是使用台式计算机上的浏览器查看welcome.html 文件，一切似乎都正常吗？
从你的问题来看还不太清楚——你说SH06A有效——那是OTA吗？但是对于所有失败的移动网络运营商来说，有不同的移动网络运营商吗？
在英国，移动网络运营商运营的代理/缓存中存在一些相当不可预测的过滤。您的问题可能是 MNO 不喜欢将流量发送到特定的 8080 端口。您可以尝试在不同的端口（最好是 80）上运行或创建虚拟服务器，这样 URL 中就不会出现任何端口。
您对 JAD 文件的观察听起来是正确的 - 手机没有加载welcome.html，因此它们没有要尝试加载的 JAD URL。
The 502 is a clue. This indicates that something is going wrong between your handset and your server, probably in the bit between the MNO network and your server. If you just use a browser on your desktop computer to look at the welcome.html file does all seem ok?
It's not quite clear from your question - you say the SH06A worked - was that OTA? But with a different MNO to all the ones that failed?
In the UK there is some, rather unpredictable, filtering in the proxy/caches that MNOs operate. It might be that your problem MNO doesn't like sending traffic to the specific 8080 port. You might try running on a different port (ideally 80) or create a virtual server so no port appears in the URL.
Your observation on JAD files sounds correct - the handsets are not loading the welcome.html, so they don't have the JAD URL to attempt to load.
检查下载 jad 和 jar 时发送的应用程序 mime 类型。如果不是以下内容，那么您可能必须适当地编辑conf文件才能发送mime类型
jad - text/vnd.sun.j2me.app-descriptor
jar - application/java-archive
您可以使用一些数据包嗅探工具来嗅探网络数据包，例如 Wireshark
Check what application mime type is being sent out when you download a jad and a jar. If it is not the following then you might have to edit the conf files appropriately to send the mime types
jad - text/vnd.sun.j2me.app-descriptor
jar - application/java-archive
You can sniff the network packets using some packet sniffing tool like Wireshark