web服务-从Android手机发送的请求在服务器上没有得到任何响应

Question

我是android世界和移动应用程序服务器端编程的新手。我得到一个问题:-当从任何安卓手机发送我的url形式的请求，然后我的服务器(Apache tomcat)没有找到任何响应的请求。

我在客户端(Android Mobile)编写以下代码:-

public static void requestForDepartment()
{
    ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
    String iName = null;
    String iprice = null;
    String idPrice = null;
    nameValuePairs.add(new BasicNameValuePair("storeId","s0001"));
    try {
        System.out.println("inside server try 1");
        // start - line is for sever connection/communication
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new
          HttpPost("http://192.168.1.3:8080/xybuy/rest/webservices/requestDepatment");
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
        HttpResponse response = httpclient.execute(httppost);
        HttpEntity entity = response.getEntity();
        // end - line is for sever connection/communication
        InputStream is = entity.getContent();
    } catch (Exception e) {
        Log.e("log_tag", "Error in http connection "
                + e.toString());
    }
}

192.168.1.3:8080是我的端点。这是我在服务器端的web.xml文件

        <?xml version="1.0" encoding="UTF-8"?>
        <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"            xmlns="http://java.sun.com/xml/ns/javaee"    xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID"    version="2.5">
  <display-name>FirstProject</display-name>
  <welcome-file-list>
  <welcome-file>index.html</welcome-file>
  <welcome-file>index.htm</welcome-file>
  <welcome-file>index.jsp</welcome-file>
  <welcome-file>index2.jsp</welcome-file>
  </welcome-file-list>
 <servlet>
 <servlet-name>ServletAdaptor</servlet-name>
 <servlet-class>
        com.sun.jersey.server.impl.container.servlet.ServletAdaptor</servlet-  class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>ServletAdaptor</servlet-name>
<url-pattern>/REST/*</url-pattern>
</servlet-mapping>

实际负载可以是JSON或XML。服务器是restful webservices

Answer 1

1)尝试在请求中添加标题，例如

httppost.setHeader("Content-Type", "application/x-www-form-urlencoded");

java默认添加一些头文件，但有时这还不够。

2)如果您在本地PC上运行java项目中的代码，它是否工作?

Answer 2

@Eugene是对的，但是你的问题完全不清楚。你说它是xml和json。这怎么可能呢?如果是xml，那么你需要一个"application/xml"作为内容类型，如果是json那么你的content-type = "application/json"