今天說下想服務器提交數據的方式：
服務端：
方法：
@RequestMapping("dologin.xhtml")
public String login(HttpServletRequest req){
String uname=req.getParameter("uname");
String password=req.getParameter("pwd");
System.out.println("uname="+uname+" upass="+password);
String result=null;
//判斷數據庫
if("admin".equals(uname)&&"123456".equals(password)){
result="success";
}else{
result="fail";
}
req.setAttribute("result", result);
//System.out.println(uname+""+password);
return "loginResult";
}登錄界面：
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<html>
<HEAD>
<TITLE> ZTREE DEMO - Standard Data </TITLE>
</HEAD>
<body>
<form action="dologin.xhtml" method="post">
name:<input type="text" name="uname"/><br/>
password:<input type="text" name="pwd"/><br/>
<input type="submit" value="登錄"/><br/>
</form>
</div>
</body>
</html>
返回結果頁面：
<%@ page language="java" contentType="text/plain; charset=UTF-8"
pageEncoding="UTF-8"%>${result}移動端：
xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context="com.example.an_comit_data_to_server.MainActivity">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="admin"
android:id="@+id/et_main_uname"
/>
<EditText
android:id="@+id/et_main_upass"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="123456" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="loginByGet"
android:text="登錄(GET)" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="loginByPost"
android:text="登錄(POST)" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="loginByAsyncHttpClient"
android:text="登錄(AsyncHttpClient)" />
</LinearLayout>activity:
private EditText et_main_uname;
private EditText et_main_upass;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
et_main_uname =(EditText) findViewById(R.id.et_main_uname);
et_main_upass = (EditText) findViewById(R.id.et_main_upass);
}
//get方式登錄
public void loginByGet(View view){
String uname=et_main_uname.getText().toString();
String password= et_main_upass.getText().toString();
String path="http://172.21.202.8:8090/front/dologin.xhtml";
new Mytask().execute(uname,password,path,"GET");
}
//post方式登錄
public void loginByPost(View view){
String uname=et_main_uname.getText().toString();
String password= et_main_upass.getText().toString();
String path="http://172.21.202.8:8090/front/dologin.xhtml";
//可變數組
new Mytask().execute(uname, password, path, "POST");
}
AsyncHttpClient asyncHttpClient=new AsyncHttpClient();
RequestParams requestParams=new RequestParams();
requestParams.put("uname",uname);
requestParams.put("upass",upass);
asyncHttpClient.post(path,requestParams,new TextHttpResponseHandler(){
@Override
public void onSuccess(int statusCode, Header[] headers, String responseBody) {
super.onSuccess(statusCode, headers, responseBody);
Toast.makeText(MainActivity.this, responseBody, Toast.LENGTH_SHORT).show();
}
@Override
public void onFailure(int statusCode, Header[] headers, String responseBody, Throwable error) {
super.onFailure(statusCode, headers, responseBody, error);
}
});
}
class MyTask extends AsyncTask {
private HttpURLConnection connection;
private URL url;
@Override
protected Object doInBackground(Object[] objects) {
//獲取參數的值
String uname = objects[0].toString();
String upass = objects[1].toString();
String path = objects[2].toString();
String type = objects[3].toString();
String str="uname="+uname+"&pwd="+password;
try {
if ("GET".equals(type)) {
//用GET方式提交
path = path + "?"+str;
url = new URL(path);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod(type);
} else if ("POST".equals(type)) {
//用POST方式提交
url = new URL(path);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod(type);
//設置contentType contentLength
connection.setRequestProperty("Content-Length",str.length()+"");
connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
//設置允許對外輸出數據
connection.setDoOutput(true);
//將用戶名和密碼提交到服務器
connection.getOutputStream().write(str.getBytes());
}
connection.setConnectTimeout(5000);
if (connection.getResponseCode() == 200) {
InputStream is = connection.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String result = br.readLine();
return result;
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Object o) {
super.onPostExecute(o);
String s = (String) o;
Toast.makeText(MainActivity.this, s, Toast.LENGTH_SHORT).show();
}
}
}