【移動應用開發(fā)技術】Android中怎么利用GET方法實現(xiàn)網(wǎng)絡傳值

本篇文章給大家分享的是有關Android中怎么利用GET方法實現(xiàn)網(wǎng)絡傳值，在下覺得挺實用的，因此分享給大家學習，希望大家閱讀完這篇文章后可以有所收獲，話不多說，跟著在下一起來看看吧。WEB應用在這里，我只建立一個簡單的Servlet，用來接收安卓端發(fā)來的信息。package

deu.hpu.servlet;

import

java.io.IOException;

import

java.io.PrintWriter;

import

javax.servlet.ServletException;

import

javax.servlet.http.HttpServlet;

import

javax.servlet.http.HttpServletRequest;

import

javax.servlet.http.HttpServletResponse;

public

class

ManagerServlet

extends

HttpServlet

{

public

void

doGet(HttpServletRequest

request,

HttpServletResponse

response)

throws

ServletException,

IOException

{

String

title=request.getParameter("title");

title=new

String(title.getBytes("ISO8859-1"),"UTF-8");

String

timelength=request.getParameter("timelength");

timelength=new

String(timelength.getBytes("ISO8859-1"),"UTF-8");

System.out.println("視頻名稱"+title);

System.out.println("時長"+timelength);

}

public

void

doPost(HttpServletRequest

request,

HttpServletResponse

response)

throws

ServletException,

IOException

{

doGet(request,response);

}

}

安卓客戶端在這里，我要建立一個輸入框界面，讓用戶吧數(shù)據(jù)輸入進去，然后我再將數(shù)據(jù)通過get方式提交。

XML界面（兩個輸入框，一個按鈕）：<LinearLayout

xmlns:android="/apk/res/android"

xmlns:tools="/tools"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical"

tools:context="com.example.newsmanager.MainActivity"

>

<TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/title"

/>

<EditText

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:id="@+id/title"/>

<TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/timelength"

/>

<EditText

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:numeric="integer"

android:id="@+id/timelength"/>"

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:id="@+id/button"

android:onClick="save"

android:text="@string/button"

/>

</LinearLayout>之后我要在Activity里將界面的編輯框里面的值傳到WEB端

主Activity（這里的線程問題在前面講過）：package

com.example.newsmanager;

import

com.example.service.NewsService;

import

android.app.Activity;

import

android.os.Bundle;

import

android.view.View;

import

android.widget.EditText;

import

android.widget.Toast;

public

class

MainActivity

extends

Activity

{

private

EditText

titletext;

private

EditText

lengthtext;

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

titletext=(EditText)

findViewById(R.id.title);

lengthtext=(EditText)

findViewById(R.id.timelength);

}

boolean

flag;

public

void

save(View

view)

throws

Exception{

//開啟線程

new

Thread(new

Runnable()

{

String

title=titletext.getText().toString();

String

length=lengthtext.getText().toString();

@Override

public

void

run()

{

boolean

result;

try

{

result

=

NewsService.save(title,length);

if(result){

//返回主線程顯示

runOnUiThread(new

Runnable()

{

@Override

public

void

run()

{

Toast.makeText(getApplicationContext(),

R.string.success,

1).show();

}

});

}else{

runOnUiThread(new

Runnable()

{

@Override

public

void

run()

{

Toast.makeText(getApplicationContext(),

R.string.error,

1).show();

}

});

}

}

catch

(Exception

e)

{

//

TODO

Auto-generated

catch

block

e.printStackTrace();

}

}

}).start();

}

}上面代碼中的NewsService類以及save方法（這個類是用來處理信息，然后以get方式傳往WEB端）。這里我要說一句，我們采用的GET方法，是將需要傳遞給WEB端的數(shù)據(jù)放在URL路徑，然后WEB端進行解析得到的，所以我們要在方法中將URL路徑給拼湊完成然后傳給WEB端(里面的IP是我tomcat服務器本機的ip)。package

com.example.service;

import

.HttpURLConnection;

import

.URL;

import

.URLEncoder;

import

java.util.HashMap;

import

java.util.Map;

public

class

NewsService

{

/*

*

保存數(shù)據(jù)

*

title

標題

*

length

時長

*

*/

public

static

boolean

save(String

title,

String

length)

throws

Exception{

String

path="2:8080/videonews/ManagerServlet";

Map<String,String>

map=new

HashMap<String,String>();

map.put("title",

title);

map.put("timelength",

length);

return

sendGETRequest(path,map,"UTF-8");

}

/*

*

發(fā)送Get請求

*

path請求路徑

*

map請求參數(shù)

*

*/

private

static

boolean

sendGETRequest(String

path,

Map<String,

String>

map,String

ecoding)

throws

Exception{

/*將路徑拼成2:8080/videonews/ManagerServlet?title=XXX&timelength=90*/

StringBuilder

url=new

StringBuilder(path);

url.append("?");

//map迭代器Entry<Key,

Value>

for(Map.Entry<String,

String>

entry:map.entrySet()){

url.append(entry.getKey()).append("=");

//ecoding是上面?zhèn)鱽淼摹癠TF-8”，為了防止中文亂碼

url.append(URLEncoder.encode(entry.getValue(),

ecoding));

url.append("&");

}

url.deleteCharAt(url.length()-1);

URL

url2=new

URL(url.toString());

HttpURLConnection

conn=(HttpURLConnection)

url2.openCo