发送从黑莓应用程序JSON请求 [英] Send JSON Request from blackberry application
问题描述
怎么能发送从客户作为工作到服务器，从服务器获取信息的BB应用程序中使用他们的BlackBerry应用程序JSON请求
我使用黑莓日食Windows下7
我尝试这个code
公共无效loginRequest（）抛出IOException异常，JSONException {
的HttpConnection c = NULL;
InputStream为= NULL;
INT RC; JSONObject的postObject =新的JSONObject（）;
postObject.put（办法，法）;
//postObject.put(\"params参数）; 尝试{
C =（HttpConnection的）Connector.open（urlPath）; //设置请求方法和头
c.setRequestMethod（HttpConnection.GET）;
c.setRequestProperty（内容类型，应用/ JSON的;字符集= UTF-8）;
c.setRequestProperty（内容长度，+（postObject.toString（）长度（） - 2））;
c.setRequestProperty（法，GET）; //得到响应code将打开连接，
//发送请求，并读取HTTP响应头。
//该头被存储到请求。
RC = c.getResponse code（）;
如果（RC！= HttpConnection.HTTP_OK）{
抛出新IOException异常（HTTP响应code：+ RC）;
} 是= c.openInputStream（）; //获取长度和处理数据
INT LEN =（int）的c.getLength（）;
如果（LEN大于0）{
INT实际= 0;
INT读取动作= 0;
字节[]数据=新的字节[LEN]
而（（读取动作= LEN）及！及（实际= -1）！）{
实际= is.read（数据读取动作，LEN - 读取动作）;
读取动作+ =实际;
}
//获取JSON字符串
的System.out.println（新的String（数据））;
}
其他{
INT CH;
而（（CH = is.read（））！= - 1）{
//去做
/ *
处理（（字节）CH）;
* /
}
}
}赶上（抛出ClassCastException E）{
抛出新抛出：IllegalArgumentException（不是一个HTTP URL）;
} {最后
如果（是！= NULL）
is.close（）;
如果（C！= NULL）
c.close（）;
}
}
我通过调用run方法这个方法在一个线程
在模拟器距离（ RC = c.getResponse code（）; ）运行code停止
我调试code，当它达到这个错误这句话停止
本地连接超时后〜120000
任何帮助
当运行在模拟器的应用程序，确保将仿真中启用的启动移动数据系统连接服务（MDS-CS） Eclipse的运行配置或调试配置 - >选项卡模拟器 - >常规选项卡。
如果没有启用它，你应该检查该指南<一个href=\"http://docs.blackberry.com/en/developers/deliverables/35144/Testing_a_BB_app_with_BB_smartphone_sim_1889924_11.jsp\">Testing与BlackBerry设备应用程序的BlackBerry智能手机模拟器，特别是
当您启动BlackBerry智能手机模拟器启动BlackBerry MDS Connection Service的
- 在Eclipse®，运行菜单上，单击调试配置或运行配置。
- 展开BlackBerry模拟器项目。
- 的完成以下任务之一：结果
- 要与现有的启动配置，在BlackBerry模拟器工作，单击启动配置。
- 要创建一个新的启动配置中，右键单击BlackBerry模拟器，选择新建。
- 单击Simulator选项卡。
- 单击常规选项卡。
- 选择与仿真复选框推出移动数据系统连接服务（MDS-CS）。
- 单击Apply（应用）。
修改：结果
另外，使用模拟器时，你可以添加; deviceside = TRUE后缀以传递给的URL Connector.open（）。通过设置 deviceside = TRUE 您指定的TCP连接应直接从手持设备（模拟你的情况）打开，因此黑莓MDS连接服务将无法使用。这是根据你的code一个code片断：如果（DeviceInfo.isSimulator（））{
urlPath + =; deviceside =真正的;
}其他{
urlPath + = connectionDependentSuffix; //后缀，是有关
//所需的连接选项
}
C =（HttpConnection的）Connector.open（urlPath）;希望这有助于。
how can i send JSON request from blackberry application that works as client to the server to get an information from the server to use them in BB application i use blackberry eclipse under windows 7
i try this code
public void loginRequest() throws IOException, JSONException{ HttpConnection c = null; InputStream is = null; int rc; JSONObject postObject = new JSONObject(); postObject.put("method", method); //postObject.put("params", Parameters); try{ c = (HttpConnection)Connector.open(urlPath); // Set the request method and headers c.setRequestMethod(HttpConnection.GET); c.setRequestProperty("Content-Type", "application/json;charset=UTF-8"); c.setRequestProperty("Content-Length", "" + (postObject.toString().length() - 2)); c.setRequestProperty("method", "GET"); // Getting the response code will open the connection, // send the request, and read the HTTP response headers. // The headers are stored until requested. rc = c.getResponseCode(); if (rc != HttpConnection.HTTP_OK){ throw new IOException("HTTP response code: " + rc); } is = c.openInputStream(); // Get the length and process the data int len = (int)c.getLength(); if (len > 0){ int actual = 0; int bytesread = 0 ; byte[] data = new byte[len]; while ((bytesread != len) && (actual != -1)){ actual = is.read(data, bytesread, len - bytesread); bytesread += actual; } //Get the JSON String System.out.println(new String(data)); } else{ int ch; while ((ch = is.read()) != -1){ //TODO /* process((byte)ch); */ } } }catch (ClassCastException e){ throw new IllegalArgumentException("Not an HTTP URL"); }finally { if (is != null) is.close(); if (c != null) c.close(); } }i call this method by run method in a thread
when the simulator reach (rc = c.getResponseCode();) running code stops
i debug the code and it stops when it reach this statement with this error
Local connection timed out after ~ 120000
any help
解决方案When running the application in simulator, make sure you enabled the Launch Mobile Data System Connection Service (MDS-CS) with simulator in Eclipse's "Run Configurations" or "Debug Configurations"->"Simulator tab"->"General tab".
If it is not enabled, you should check this guide "Testing a BlackBerry device application with the BlackBerry Smartphone Simulator", particularly the "Testing a BlackBerry device application that uses an HTTP connection" section. To make a long story short, you have to enable the MDS-CS. After enabling it, you should restart your simulator. Here is a quote from this guide:
Start the BlackBerry MDS Connection Service when you start the BlackBerry Smartphone Simulator
- In Eclipse®, on the Run menu, click Debug Configurations or Run Configurations.
- Expand the BlackBerry Simulator item.
- Complete one of the following tasks:
- To work with an existing launch configuration, under BlackBerry Simulator, click a launch configuration.
- To create a new launch configuration, right-click BlackBerry Simulator, select New.
- Click the Simulator tab.
- Click the General tab.
- Select the Launch Mobile Data System Connection Service (MDS-CS) with simulator check box.
- Click Apply.
Edit:
Alternatively, when using a simulator you can add;deviceside=truesuffix to the url that you pass toConnector.open(). By setting deviceside=true you specify that the underlying TCP connection should be opened directly from the handheld (simulator in your case), therefore BlackBerry MDS Connection Service will not be used. Here is a code snippet based on your code:if (DeviceInfo.isSimulator()) { urlPath += ";deviceside=true"; } else { urlPath += connectionDependentSuffix; // suffix that is relevant to // the desired connection option } c = (HttpConnection)Connector.open(urlPath);Hope this helps.
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