Java Android post请求

我尝试在android应用程序中模仿javascript代码：

以下是javascript代码：

text = '{"username":"Hello","password":"World"}';
x.open("POST", url);
x.setRequestHeader("Content-type", "application/json");
x.setRequestHeader("Content-length", text.length);
x.send(text);

以下是我到目前为止为android应用程序所做的工作（不起作用）：

当我尝试在eclipse上调试此代码时，模拟器会在调试器挂起时保持运行。谢谢

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注意：它挂在httpclient.execute（httppost）

上。您的意思是将httppost路径设置为仅

路径

。我认为你的绞刑是因为你没有给HttpPost一个有效的URL。您需要修改此行：

HttpPost httppost = new HttpPost("path"); 

差不多

HttpPost httppost = new HttpPost("actual/url/path"); 

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以下是我用于Android post请求的代码：

HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("fullurl");

List<NameValuePair> pairs = new ArrayList<NameValuePair>();
pairs.add(new BasicNameValuePair("parameter", "variable");
post.setEntity (new UrlEncodedFormEntity(pairs));

HttpResponse response = client.execute(post);

HttpClient=newdefaulthttpclient（）；
HttpPost=新的HttpPost（“完整URL”）；
列表对=新的ArrayList（）；
添加（新的BasicNameValuePair（“参数”、“变量”）；
post.setEntity（新的UrlEncodedFormEntity（对））；
HttpResponse response=client.execute（post）；

…等等。

试试看：

HttpClient httpclient = new DefaultHttpClient(); 
HttpPost httppost = new HttpPost(url);  
JSONObject json = new JSONObject();
try{
      json.put("username", "Hello");
      json.put("password", "World");
      StringEntity se = new StringEntity(json.toString());  
      se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
      post.setEntity(se);
      HttpResponse response = httpclient.execute(httppost); 
      /*Checking response */
      if(response!=null){
          InputStream in = response.getEntity().getContent(); //Get the data in the entity

}
catch(Exception e){
    e.printStackTrace();
}

---

与JS版本相比，文本字符串的开头和结尾有额外的语音标记？

//创建新的HttpClient和Post头
 // Create a new HttpClient and Post Header
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost(StringUrl);

    try {
        // Add your data
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
        nameValuePairs.add(new BasicNameValuePair("id", "12345"));
        nameValuePairs.add(new BasicNameValuePair("stringdata", "Hi"));
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));



        // Execute HTTP Post Request
        HttpResponse response = httpclient.execute(httppost);
        System.out.println("rep => " + response);


    } catch (IOException e) {
       System.out.println(e);
    }
} 

HttpClient HttpClient=新的DefaultHttpClient（）；
HttpPost HttpPost=新的HttpPost（StringUrl）；
试一试{
//添加您的数据
List nameValuePairs=新的ArrayList（2）；
添加（新的BasicNameValuePair（“id”，“12345”）；
添加（新的BasicNameValuePair（“stringdata”、“Hi”）；
setEntity（新的UrlEncodedFormEntity（nameValuePairs））；
//执行HTTP Post请求
HttpResponse response=httpclient.execute（httppost）；
System.out.println（“rep=>”+响应）；
}捕获（IOE异常）{
系统输出打印ln（e）；
}
} 

你能告诉我它挂在哪一行吗？@KurtisNusbaum第二段的最后一行你验证了模拟器与互联网的连接了吗？@Mike G没有设置“内容长度”标题…将通过StringEntity为您完成此操作。我将url替换为路径仅用于显示目的。我知道它不在我的源代码中，您是否已验证url是否有效并在您正在使用的机器上工作？在您提供的代码中，它的JSON请求不添加标题。

 // Create a new HttpClient and Post Header
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost(StringUrl);

    try {
        // Add your data
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
        nameValuePairs.add(new BasicNameValuePair("id", "12345"));
        nameValuePairs.add(new BasicNameValuePair("stringdata", "Hi"));
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));



        // Execute HTTP Post Request
        HttpResponse response = httpclient.execute(httppost);
        System.out.println("rep => " + response);


    } catch (IOException e) {
       System.out.println(e);
    }
}