Java 通过Android使用RESTful web服务编写数据

我正在开发android应用程序。我们的java开发团队为 读取和写入数据。我成功地将数据读取并显示到设备中。我使用以下android代码插入数据，但它不起作用

public class MainActivity extends Activity 
{

    ProgressDialog pd;
    List<NameValuePair>list;
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        new Mytask().execute();   
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) 
    {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    public class Mytask extends AsyncTask<String,String,String>
    {


        @Override
        protected void onPostExecute(String result) 
        {
            // TODO Auto-generated method stub
            super.onPostExecute(result);
            Toast.makeText(getBaseContext(), "Inser Record Succesfully", Toast.LENGTH_LONG).show();
            pd.dismiss(); 

        }

        @Override
        protected void onPreExecute() 
        {
            // TODO Auto-generated method stub
            super.onPreExecute();
            pd=new ProgressDialog(MainActivity.this);
            pd.setMessage("Please Wait");
            pd.show();
        }

        @Override
        protected String doInBackground(String... params) 
        {
            // TODO Auto-generated method stub
            pushdata();
            return null;

        }

    }
    public void pushdata()
    {
        try
        {
            HttpClient client=new DefaultHttpClient();
            HttpPost post=new HttpPost("http://192.168.1.239:8080/KesariRating/rating/add");
            // add data to url
            list=new ArrayList<NameValuePair>(5);
            list.add(new BasicNameValuePair("exce","e"));
            list.add(new BasicNameValuePair("vgood","null"));
            list.add(new BasicNameValuePair("good","null"));
            list.add(new BasicNameValuePair("poor","null"));
            list.add(new BasicNameValuePair("fair","null"));
            post.setEntity(new UrlEncodedFormEntity(list));
            HttpResponse response=client.execute(post);
            HttpEntity entity=response.getEntity();
        }
        catch(Exception e)
        {
            Log.d("Error in Push","",e);

        }
    }
}

下面是java代码

public class RatingCore {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;
    private String excellent;
    private String vgood;
    private String good;
    private String poor;
    private String fair;
    private Date timestamp;

    public RatingCore() {

    }

    public RatingCore(int id, String excellent, String vgood, String good,

    String poor, String fair, Timestamp timestamp) {
        super();
        this.id = id;
        this.excellent = excellent;
        this.vgood = vgood;
        this.good = good;
        this.poor = poor;
        this.fair = fair;
        this.timestamp = timestamp;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getExcellent() {
        return excellent;
    }

    public void setExcellent(String excellent) {
        this.excellent = excellent;
    }

    public String getVgood() {
        return vgood;
    }

    public void setVgood(String vgood) {
        this.vgood = vgood;
    }

    public String getGood() {
        return good;
    }

    public void setGood(String good) {
        this.good = good;
    }

    public String getPoor() {
        return poor;
    }

    public void setPoor(String poor) {
        this.poor = poor;
    }

    public String getFair() {
        return fair;
    }

    public void setFair(String fair) {
        this.fair = fair;
    }

    public Date getTimestamp() {
        return timestamp;
    }

    public void setTimestamp(Date timestamp) {
        this.timestamp = timestamp;
    }

}

---

这是我发送一些数据到服务器数据库的代码，我希望它能帮助您

    private void validat_user(String stg1, String stg2,String stg3, String stg4,String stg5, String stg6,String stg7, String stg8,String stg9, String stg10,String stg11)
    {

        WebServiceTask wst = new WebServiceTask(WebServiceTask.POST_TASK, this, "Authentication in progress...");

        wst.addNameValuePair("A_ID", stg1);
        wst.addNameValuePair("A_NAME", stg2);
        wst.addNameValuePair("A_PWD1", stg3);
        wst.addNameValuePair("A_JOIN", stg4);
        wst.addNameValuePair("A_END", stg5);
        wst.addNameValuePair("A_COURSE", stg6);
        wst.addNameValuePair("A_FACID", stg7);
        wst.addNameValuePair("A_SESSION", stg8);
        wst.addNameValuePair("A_BATCH", stg9);
        wst.addNameValuePair("A_BRANCH1", stg10);
        wst.addNameValuePair("A_GENDER", stg11);
        wst.execute(new String[] { SERVICE_URL });

    }
    @SuppressWarnings("deprecation")
    public void no_net()
    {
        display( "No Network Connection");
        final AlertDialog alertDialog = new AlertDialog.Builder(Staff.this).create();
        alertDialog.setTitle("No Internet Connection");
        alertDialog.setMessage("You don't have internet connection.\nElse please check the Internet Connection Settings.");
        //alertDialog.setIcon(R.drawable.error_info);
        alertDialog.setCancelable(false);
        alertDialog.setButton("Close", new DialogInterface.OnClickListener() 
        {
            public void onClick(DialogInterface dialog, int which)
            {   
                alertDialog.cancel();
                Staff.this.finish();
                System.exit(0);
            }
        });
        alertDialog.setButton2("Use Local DataBase", new DialogInterface.OnClickListener() 
        {
            public void onClick(DialogInterface dialog, int which)
            {
                display( "Accessing local DataBase.....");
                alertDialog.cancel();
            }
        });
        alertDialog.show();
    }

    private class WebServiceTask extends AsyncTask<String, Integer, String> {

        public static final int POST_TASK = 1;

        private static final String TAG = "WebServiceTask";

        // connection timeout, in milliseconds (waiting to connect)
        private static final int CONN_TIMEOUT = 3000;

        // socket timeout, in milliseconds (waiting for data)
        private static final int SOCKET_TIMEOUT = 5000;

        private int taskType = POST_TASK;
        private Context mContext = null;
        private String processMessage = "Processing...";

        private ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();

        private ProgressDialog pDlg = null;

        public WebServiceTask(int taskType, Context mContext, String processMessage) {

            this.taskType = taskType;
            this.mContext = mContext;
            this.processMessage = processMessage;
        }

        public void addNameValuePair(String name, String value) {

            params.add(new BasicNameValuePair(name, value));
        }

private void validate_user（字符串stg1、字符串stg2、字符串stg3、字符串stg4、字符串stg5、字符串stg6、字符串stg7、字符串stg8、字符串stg9、字符串stg10、字符串stg11）
{
WebServiceTask wst=新的WebServiceTask（WebServiceTask.POST_任务，这是“正在进行的身份验证…”）；
wst.addNameValuePair（“A_ID”，stg1）；
wst.addNameValuePair（“A_名称”，stg2）；
wst.addNameValuePair（“A_PWD1”，stg3）；
wst.addNameValuePair（“A_JOIN”，stg4）；
wst.addNameValuePair（“A_端”，stg5）；
wst.addNameValuePair（“A_课程”，stg6）；
wst.addNameValuePair（“A_FACID”，stg7）；
wst.addNameValuePair（“A_会话”，stg8）；
wst.addNameValuePair（“一批”，stg9）；
wst.addNameValuePair（“A_BRANCH1”，stg10）；
wst.addNameValuePair（“A_性别”，stg11）；
execute（新字符串[]{SERVICE_URL}）；
}
@抑制警告（“弃用”）
公共空间无网格（）
{
显示（“无网络连接”）；
final AlertDialog AlertDialog=新建AlertDialog.Builder（Staff.this.create（）；
alertDialog.setTitle（“无互联网连接”）；
alertDialog.setMessage（“您没有internet连接。\n请检查internet连接设置。”）；
//alertDialog.setIcon（R.drawable.error\u info）；
alertDialog.setCancelable（假）；
alertDialog.setButton（“关闭”，新建DialogInterface.OnClickListener（））
{
public void onClick（DialogInterface dialog，int which）
{   
alertDialog.cancel（）；
Staff.this.finish（）；
系统出口（0）；
}
});
alertDialog.setButton2（“使用本地数据库”，新建DialogInterface.OnClickListener（））
{
public void onClick（DialogInterface dialog，int which）
{
显示（“访问本地数据库…”；
alertDialog.cancel（）；
}
});
alertDialog.show（）；
}
私有类WebServiceTask扩展异步任务{
公共静态最终int POST_任务=1；
私有静态最终字符串TAG=“WebServiceTask”；
//连接超时，以毫秒为单位（等待连接）
专用静态最终内部连接超时=3000；
//套接字超时，以毫秒为单位（等待数据）
专用静态最终int套接字\u超时=5000；
private int taskType=后期任务；
私有上下文mContext=null；
私有字符串processMessage=“正在处理…”；
private ArrayList params=new ArrayList（）；
private ProgressDialog pDlg=null；
公共WebServiceTask（int任务类型、上下文mContext、字符串processMessage）{
this.taskType=taskType；
this.mContext=mContext；
this.processMessage=processMessage；
}
public void addNameValuePair（字符串名称、字符串值）{
添加（新的BasicNameValuePair（名称、值））；
}

什么不起作用？有错误或异常吗？记录未插入表中。我想知道如何在androidplease help中创建类的对象并使用post方法发送。我遇到了问题。我不会在应用程序中进一步

    private void validat_user(String stg1, String stg2,String stg3, String stg4,String stg5, String stg6,String stg7, String stg8,String stg9, String stg10,String stg11)
    {

        WebServiceTask wst = new WebServiceTask(WebServiceTask.POST_TASK, this, "Authentication in progress...");

        wst.addNameValuePair("A_ID", stg1);
        wst.addNameValuePair("A_NAME", stg2);
        wst.addNameValuePair("A_PWD1", stg3);
        wst.addNameValuePair("A_JOIN", stg4);
        wst.addNameValuePair("A_END", stg5);
        wst.addNameValuePair("A_COURSE", stg6);
        wst.addNameValuePair("A_FACID", stg7);
        wst.addNameValuePair("A_SESSION", stg8);
        wst.addNameValuePair("A_BATCH", stg9);
        wst.addNameValuePair("A_BRANCH1", stg10);
        wst.addNameValuePair("A_GENDER", stg11);
        wst.execute(new String[] { SERVICE_URL });

    }
    @SuppressWarnings("deprecation")
    public void no_net()
    {
        display( "No Network Connection");
        final AlertDialog alertDialog = new AlertDialog.Builder(Staff.this).create();
        alertDialog.setTitle("No Internet Connection");
        alertDialog.setMessage("You don't have internet connection.\nElse please check the Internet Connection Settings.");
        //alertDialog.setIcon(R.drawable.error_info);
        alertDialog.setCancelable(false);
        alertDialog.setButton("Close", new DialogInterface.OnClickListener() 
        {
            public void onClick(DialogInterface dialog, int which)
            {   
                alertDialog.cancel();
                Staff.this.finish();
                System.exit(0);
            }
        });
        alertDialog.setButton2("Use Local DataBase", new DialogInterface.OnClickListener() 
        {
            public void onClick(DialogInterface dialog, int which)
            {
                display( "Accessing local DataBase.....");
                alertDialog.cancel();
            }
        });
        alertDialog.show();
    }

    private class WebServiceTask extends AsyncTask<String, Integer, String> {

        public static final int POST_TASK = 1;

        private static final String TAG = "WebServiceTask";

        // connection timeout, in milliseconds (waiting to connect)
        private static final int CONN_TIMEOUT = 3000;

        // socket timeout, in milliseconds (waiting for data)
        private static final int SOCKET_TIMEOUT = 5000;

        private int taskType = POST_TASK;
        private Context mContext = null;
        private String processMessage = "Processing...";

        private ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();

        private ProgressDialog pDlg = null;

        public WebServiceTask(int taskType, Context mContext, String processMessage) {

            this.taskType = taskType;
            this.mContext = mContext;
            this.processMessage = processMessage;
        }

        public void addNameValuePair(String name, String value) {

            params.add(new BasicNameValuePair(name, value));
        }