安卓向服务器提交数据（方式：get、post、AsyncHttpClient ）

来源：互联网发布：用微信能在淘宝网购物编辑：程序博客网时间：2024/06/11 02:13

之前写了篇如何接受解析服务器传过来的数据，今天就来讲一下如何向服务器提交数据。写了个小demo. 效果图如下：

这里写图片描述

服务端：

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;        //判断数据库        if("admin".equals(uname)&&"123456".equals(password)){            result="success";        }else{            result="fail";        }        req.setAttribute("result", result);        //System.out.println(uname+""+password);        return "loginResult";    }

登录界面：

<%@ 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="登录"/><br/>    </form> </div></body></html>

返回结果页面：

<%@ page language="java" contentType="text/plain; charset=UTF-8"    pageEncoding="UTF-8"%>${result}

移动端：

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="登录(GET)" />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:onClick="loginByPost"        android:text="登录(POST)" />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:onClick="loginByAsyncHttpClient"        android:text="登录(AsyncHttpClient)" /></LinearLayout>

activity:

import android.os.AsyncTask;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.EditText;import android.widget.Toast;import com.loopj.android.http.AsyncHttpClient;import com.loopj.android.http.RequestParams;import com.loopj.android.http.ResponseHandlerInterface;import com.loopj.android.http.TextHttpResponseHandler;import org.apache.http.Header;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL; 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方式登录    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方式登录    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";        //可变数组        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) {            //获取参数的值            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);                    //设置contentType  contentLength                    connection.setRequestProperty("Content-Length",str.length()+"");                    connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");                    //设置允许对外输出数据                    connection.setDoOutput(true);                    //将用户名和密码提交到服务器                    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();        }    }}

注意：用AsyncHttpClient 框架时，需要导入相应的包，至于包可以到网上下载就不展示了，还需在清单文件加联网权限。当然，同时还需搭建一个局域网，或要有网的情况下。

0 0

安卓 向服务器提交数据（方式：get、post、AsyncHttpClient ）

安卓向服务器提交数据（方式：get、post、AsyncHttpClient ）