Question

java用服务端怎么用json数据传输到安卓客户端

Answer 1

java用服务端怎么用json数据传输到安卓客户端
public class MainActivity extends Activity
{

private Button submit = null;
URL url = null;
String urlPath = "http://10.0.3.2:8080/XMLParse/AcceptJsonServlet";
EditText name = null;
EditText age = null;
EditText address = null;

Handler handler = new Handler()
{
public void handleMessage(Message msg)
{
if (msg.what == 0x123)
{

Toast.makeText(MainActivity.this,
"发送成功", Toast.LENGTH_LONG)
.show();

}
else
{
Toast.makeText(MainActivity.this,
"发送失败", Toast.LENGTH_LONG)
.show();

}
}
};

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
name = ((EditText) findViewById(R.id.name));
age = ((EditText) findViewById(R.id.age));
address = ((EditText) findViewById(R.id.address));

submit = (Button) findViewById(R.id.submit);

submit.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
new Thread()
{
public void run()
{
JSONObject js = new JSONObject();

JSONObject params = new JSONObject();

// JSONArray array = new JSONArray();

Person p = new Person(name.getText().toString(), age
.getText().toString(), address.getText()
.toString());
// 封装子对象
try
{
js.put("name", p.getName());
js.put("age", p.getAge());
js.put("address", p.getAddress());
// 封装Person数组
params.put("Person", js);
}
catch (JSONException e)
{
e.printStackTrace();
}
// 把Json数据转换成String类型，使用输出流向服务器写
final String content = String.valueOf(params);

try
{
url = new URL(urlPath);
HttpURLConnection conn = (HttpURLConnection) url
.openConnection();
conn.setConnectTimeout(5000);
conn.setDoOutput(true);// 设置允许输出
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type",
"application/json; charset=UTF-8"); // 内容类型
OutputStream os = conn.getOutputStream();
os.write(content.getBytes());
os.close();
if (conn.getResponseCode() == 200)
{
handler.sendEmptyMessage(0x123);
}
else
{
handler.sendEmptyMessage(0x122);
}

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

}.start();