Android开发-基础网络组件(2)使用ApacheHttpClient登陆-AndroidStudio

转载请注明出处：http://blog.csdn.net/iwanghang/article/details/70755739
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老规矩，先上GIF动态图，看个效果，如果符合你的项目或者确定你要了解的内容，再往下看吧：



PHP：
<?php
// post过来的数据
$action_post = isset($_POST['action']) ? $_POST['action'] : '';
$username_post = isset($_POST['username']) ? $_POST['username'] : '';
$password_post = isset($_POST['password']) ? $_POST['password'] : '';

// get过来的数据
$action_get = isset($_GET['action']) ? $_GET['action'] : '';
$username_get = isset($_GET['username']) ? $_GET['username'] : '';
$password_get = isset($_GET['password']) ? $_GET['password'] : '';

if($action_post=='login') {
login($username_post, $password_post);
echo " - from post method";
} elseif ($action_get=='login'){
login($username_get, $password_get);
echo " - from get method";
} else {
$result = array("login"=>"error");
$json = json_encode($result);
echo $json;
}

/*用户登录*/
function login($username, $password) {
$result = null;
if($username=="iwanghang" && $password=="123") {
$result = array("login"=>$username."---".$password."---success");
$json = json_encode($result);
}else{
$result = array("login"=>"账户名或密码操作");
$json = json_encode($result);
}
echo $json;
}
Android：
导包：
搜索 org.apache.http.client


MainActivity.java：
package com.iwanghang.apachehttpclientdemo;

import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.ref.WeakReference;
import java.util.ArrayList;

/**
* 导包搜索 org.apache.http.client
*
* 两种请求方式的区别：
* get：大小不能超过4KB，速度快，会在URL上显示，不安全
* post：大小不限制，速度比get慢，不会再URL上显示，安全性高
*/
public class MainActivity extends AppCompatActivity {

private TextView textView_info;

private final MyHandler myHandler = new MyHandler(this);
private static final int LOAD_SUCESS = 0x1;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

textView_info = (TextView) findViewById(R.id.textView_info);
}

public void getClick(View view){
getRequest();
}

public void postClick(View view){
postRequest();
}

// 使用ApacheHttpClient进行Post请求
private void postRequest() {
new Thread(new Runnable() {
@Override
public void run() {
String path= "http://192.168.1.114/login.php";
// 创建请求对象
HttpPost post = new HttpPost(path);
// 创建键值对ArrayList
ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("action","login"));
params.add(new BasicNameValuePair("username","iwanghang"));
params.add(new BasicNameValuePair("password","123"));
HttpEntity entity = null;
try {
entity = new UrlEncodedFormEntity(params);
post.setEntity(entity);

HttpClient httpClient = new DefaultHttpClient();
HttpResponse response = httpClient.execute(post);
// 获取响应的状态码
int status = response.getStatusLine().getStatusCode();
System.out.println("响应的状态码 = " + status);
Message msg = null;
switch (status){
case HttpStatus.SC_OK: // 200 正常
entity = response.getEntity();
String result = EntityUtils.toString(entity,"utf-8");
System.out.println(result);
// 通过handler把result传出去
msg = myHandler.obtainMessage(LOAD_SUCESS,result);
myHandler.sendMessage(msg);
break;
case HttpStatus.SC_NOT_FOUND: // 404 找不到
// 通过handler把result传出去
msg = myHandler.obtainMessage(LOAD_SUCESS,"404");
myHandler.sendMessage(msg);
break;
case HttpStatus.SC_INTERNAL_SERVER_ERROR: // 500 服务器异常
// 通过handler把result传出去
msg = myHandler.obtainMessage(LOAD_SUCESS,"500");
myHandler.sendMessage(msg);
break;
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
}

// 使用ApacheHttpClient进行Get请求
private void getRequest(){
new Thread(new Runnable() {
@Override
public void run() {
String path= "http://192.168.1.114/login.php?action=login&username=iwanghang&password=123";
// 创建请求对象
HttpGet get = new HttpGet(path);
// 创建HTTP客户端对象，用于发送请求
HttpClient httpClient = new DefaultHttpClient();
try {
// 向服务器发送请求，并返回响应数据
HttpResponse response = httpClient.execute(get);
// 获取响应的状态码
int status = response.getStatusLine().getStatusCode();
System.out.println("响应的状态码 = " + status);
Message msg = null;
switch (status){
case HttpStatus.SC_OK: // 200 正常
HttpEntity entity = response.getEntity();
String result = EntityUtils.toString(entity,"utf-8");
System.out.println(result);
// 通过handler把result传出去
msg = myHandler.obtainMessage(LOAD_SUCESS,result);
myHandler.sendMessage(msg);
break;
case HttpStatus.SC_NOT_FOUND: // 404 找不到
// 通过handler把result传出去
msg = myHandler.obtainMessage(LOAD_SUCESS,"404");
myHandler.sendMessage(msg);
break;
case HttpStatus.SC_INTERNAL_SERVER_ERROR: // 500 服务器异常
// 通过handler把result传出去
msg = myHandler.obtainMessage(LOAD_SUCESS,"500");
myHandler.sendMessage(msg);
break;
}
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
}

private static class MyHandler extends Handler {
private final WeakReference<MainActivity> weakReference; // 软引用
public MyHandler(MainActivity mainActivity){
weakReference = new WeakReference<MainActivity>(mainActivity);
}
@Override
public void handleMessage(Message msg) {
MainActivity mainActivity = weakReference.get();
if (mainActivity!=null){
switch (msg.what){
case LOAD_SUCESS:
mainActivity.textView_info.setText((String)msg.obj); // 获取msg 设置UI显示
break;
}
}
}
}
}


activity_main.xml：<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
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"
tools:context="com.iwanghang.apachehttpclientdemo.MainActivity">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
android:id="@+id/textView_info" />

<Button
android:onClick="getClick"
android:text="HttpClient Get请求"
android:textAllCaps="false"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/button_get" />

<Button
android:onClick="postClick"
android:text="HttpClient Post请求"
android:textAllCaps="false"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/button_post" />
</LinearLayout>


转载请注明出处：http://blog.csdn.net/iwanghang/article/details/70755739

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