获取信息从JSON [英] Getting message from JSon
本文介绍了获取信息从JSON的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我写了下面的code，以获得从一个文件PHP一个简单的消息，给我一个JSON对象，我有我的code没有错误和PHP code工作做好了，可以请你帮我找的是我的code事项：）
JAVA code：
包com.example.httpclient;进口java.io.BufferedReader中;
进口的java.io.InputStream;
进口java.io.InputStreamReader中;进口org.apache.http.HttpEntity;
进口org.apache.http.Htt presponse;
进口org.apache.http.client.HttpClient;
进口org.apache.http.client.methods.HttpPost;
进口org.apache.http.impl.client.DefaultHttpClient;进口android.app.Activity;
进口android.os.Bundle;
进口android.util.Log;
进口android.widget.TextView;公共类MainActivity延伸活动{ TextView的myListView; @覆盖
保护无效的onCreate（捆绑savedInstanceState）{
尝试{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.activity_main）; //这是我们的TextView元素
myListView =（的TextView）findViewById（R.id.textView1）; //让我们尝试连接
尝试{
//创建一个新的客户端对象
HttpClient的HttpClient的=新DefaultHttpClient（）; //现在张贴到您的演示网址
HttpPost httppost =新HttpPost（http://goldengym.ma/test/test1.php）; //执行职务，并得到响应
HTT presponse响应= httpclient.execute（httppost）; //从响应消息
HttpEntity实体= response.getEntity（）; //获取消息的内容
InputStream的网= entity.getContent（）; //响应转换成字符串
尝试{
的BufferedReader读者=新的BufferedReader（新的InputStreamReader（纤维网，ISO-8859-1），8）; //读取响应中的一个线
myListView.setText（reader.readLine（））; //慢我们的InputStream
webs.close（）; }赶上（例外五）{
Log.e（log_tag，错误转换结果+ e.toString（））;
}
}赶上（例外五）{
Log.e（log_tag，在HTTP连接错误+ e.toString（））;
}
}赶上（例外五）{
Log.e（log_tag，错误+ e.toString（））;
}
}}
还有就是PHP code：
＆LT; PHP $结果='TEST的工作，我们得到了连接; 打印json_en code（$结果）;？＆GT;
和有我logcat的：
十二月3日至3日：35：02.918：I / ActivityManager（1995）：强制停止包com.example.httpclient的uid = 10118十二月3日至3日：35：04.518：W /软件包管理系统（1995）：为PKG code路线：从com.example.httpclient改变/data/app/com.example.httpclient-2.apk到/数据/应用/com.example.httpclient-1.apk十二月3日至3日：35：04.518：I / ActivityManager（1995）：强制停止包com.example.httpclient的uid = 10118十二月3日至3日：35：04.518：W /软件包管理系统（1995）：为PKG资源路径：从com.example.httpclient改变/data/app/com.example.httpclient-2.apk到/数据/应用/ COM。 example.httpclient-1.apk十二月3日至3日：35：05.218：I / ActivityManager（1995）：强制停止包com.example.httpclient的uid = 10118十二月3日至3日：35：05.493：D / Launcher.LauncherModel（5871）： - ＆GT;包：com.example.httpclient十二月3日至3日：35：05.723：D / Launcher.LauncherModel（5871）： - ＆GT;更新包com.example.httpclient十二月3日至3日：35：05.723：D / Launcher.LauncherModel（5871）： - ＆GT;包：com.example.httpclient十二月3日至3日：35：05.913：V / BackupManagerService（1995）：updatePackageParticipantsLocked：com.example.httpclient十二月3日至3日：35：06.188：D / PackageBroadcastService（2465）：接收到的广播行动= android.intent.action.PACKAGE_REMOVED和URI = com.example.httpclient十二月3日至3日：35：06.523：V / BackupManagerService（1995）：updatePackageParticipantsLocked：com.example.httpclient十二月3日至3日：35：07.598：W / DeepLinking（3458）：没有深层链接安装数据发现com.example.httpclient十二月3日至3日：35：07.663：D / PackageBroadcastService（2465）：接收到的广播行动= android.intent.action.PACKAGE_ADDED和URI = com.example.httpclient十二月3日至3日：35：07.703：D / PackageAddedReceiver（2234）：包添加com.example.httpclient十二月3日至3日：35：08.048：D / PackageBroadcastService（2465）：接收到的广播行动= android.intent.action.PACKAGE_REPLACED和URI = com.example.httpclient
解决方案
包com.example.httpclient;进口java.io.BufferedReader中;
进口的java.io.InputStream;
进口java.io.InputStreamReader中;
进口org.apache.http.HttpEntity;
进口org.apache.http.Htt presponse;
进口org.apache.http.client.HttpClient;
进口org.apache.http.client.methods.HttpPost;
进口org.apache.http.impl.client.DefaultHttpClient;
进口android.os.Build;
进口android.os.Bundle;
进口android.os.StrictMode;
进口android.annotation.TargetApi;
进口android.app.Activity;
进口android.util.Log;
进口android.view.Menu;
进口android.widget.TextView;
公共类MainActivity延伸活动{
TextView的myListView;@TargetApi（Build.VERSION_ codeS.GINGERBREAD）
@覆盖
保护无效的onCreate（捆绑savedInstanceState）{ super.onCreate（savedInstanceState）;
的setContentView（R.layout.activity_main）; //这是我们的TextView元素
myListView =（的TextView）findViewById（R.id.tv）;
。StrictMode.ThreadPolicy政策=新StrictMode.ThreadPolicy.Builder（）permitAll（）建（）;
StrictMode.setThreadPolicy（政策）;
//让我们尝试连接
尝试{
//创建一个新的客户端对象
HttpClient的HttpClient的=新DefaultHttpClient（）; //现在张贴到您的演示网址
HttpPost httppost =新HttpPost（http://10.0.2.2/testAndroid/test1.php）; //执行职务，并得到响应
HTT presponse响应= httpclient.execute（httppost）; //从响应消息
HttpEntity实体= response.getEntity（）; //获取消息的内容
InputStream的网= entity.getContent（）; //响应转换成字符串
尝试{
的BufferedReader读者=新的BufferedReader（新的InputStreamReader（纤维网，ISO-8859-1），8）; //读取响应中的一个线
myListView.setText（reader.readLine（））; //慢我们的InputStream
webs.close（）; }赶上（例外五）{
Log.e（log_tag，错误转换结果+ e.toString（））;
}
}赶上（例外五）{
Log.e（log_tag，在HTTP连接错误+ e.toString（））;
}
}
@覆盖
公共布尔onCreateOptionsMenu（菜单菜单）{
//充气菜单;如果是present这增加了项目操作栏。
。getMenuInflater（）膨胀（R.menu.main，菜单）;
返回true;
}}
PLZ试试这个code，这是工作的罚款。应该用
StrictMode.ThreadPolicy政策=新StrictMode.ThreadPolicy.Builder（）permitAll（）建立（）。
StrictMode.setThreadPolicy（政策）;
和Manifeast
＆LT;？XML版本=1.0编码=UTF-8＆GT？;
＆LT;清单的xmlns：机器人=http://schemas.android.com/apk/res/android
包=com.example.httpclient
安卓版code =1
机器人：=的versionName1.0＆GT; ＆LT;用途-SDK
安卓的minSdkVersion =8
机器人：targetSdkVersion =19/＆GT; ＆LT;使用许可权的android：NAME =android.permission.INTERNET对/＆GT;
＆LT;使用许可权的android：NAME =android.permission.ACCESS_NETWORK_STATE/＆GT;
＆lt;应用
机器人：allowBackup =真
机器人：图标=@绘制/ ic_launcher
机器人：标签=@字符串/ APP_NAME
机器人：主题=@风格/ AppTheme＆GT;
＆LT;活动
机器人：名字=com.provider.testdemo.MainActivity
机器人：标签=@字符串/ APP_NAME＆GT;
＆所述;意图滤光器＆gt;
＆lt;作用机器人：名字=android.intent.action.MAIN/＆GT; ＆LT;类机器人：名字=android.intent.category.LAUNCHER/＆GT;
＆所述; /意图滤光器＆gt;
＆LT; /活性GT;
＆LT; /用途＆gt;
I wrote the code below to get a simple message from a file php that send me a json object, I have no errors in my code and the PHP code work well, can you please help me to find what is the matter with my code :)
JAVA Code :
package com.example.httpclient;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
public class MainActivity extends Activity {
TextView myListView;
@Override
protected void onCreate(Bundle savedInstanceState) {
try{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//This is our textView element
myListView = (TextView) findViewById(R.id.textView1);
//Lets try to connect
try{
//Create a new client object
HttpClient httpclient = new DefaultHttpClient();
//Now post to your demo URL
HttpPost httppost = new HttpPost("http://goldengym.ma/test/test1.php");
//Execute the post and get the response
HttpResponse response = httpclient.execute(httppost);
//Get the message from the response
HttpEntity entity = response.getEntity();
//Get the content of the message
InputStream webs = entity.getContent();
//Convert response to string
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(webs, "iso-8859-1"), 8);
//Read one line of the response
myListView.setText(reader.readLine());
//Slow our inputStream
webs.close();
}catch(Exception e){
Log.e("log_tag", "Error converting result " + e.toString());
}
}catch(Exception e){
Log.e("log_tag", "Error in http connection " + e.toString());
}
}catch (Exception e){
Log.e("log_tag", "Error " + e.toString());
}
}
}
And there is the PHP Code :
<?php
$result = 'TEST WORKED, WE GOT CONNECTION';
print json_encode($result);
?>
And there is my logcat :
03-03 12:35:02.918: I/ActivityManager(1995): Force stopping package com.example.httpclient uid=10118
03-03 12:35:04.518: W/PackageManager(1995): Code path for pkg : com.example.httpclient changing from /data/app/com.example.httpclient-2.apk to /data/app/com.example.httpclient-1.apk
03-03 12:35:04.518: I/ActivityManager(1995): Force stopping package com.example.httpclient uid=10118
03-03 12:35:04.518: W/PackageManager(1995): Resource path for pkg : com.example.httpclient changing from /data/app/com.example.httpclient-2.apk to /data/app/com.example.httpclient-1.apk
03-03 12:35:05.218: I/ActivityManager(1995): Force stopping package com.example.httpclient uid=10118
03-03 12:35:05.493: D/Launcher.LauncherModel(5871): --> package:com.example.httpclient
03-03 12:35:05.723: D/Launcher.LauncherModel(5871): --> update package com.example.httpclient
03-03 12:35:05.723: D/Launcher.LauncherModel(5871): --> package:com.example.httpclient
03-03 12:35:05.913: V/BackupManagerService(1995): updatePackageParticipantsLocked: com.example.httpclient
03-03 12:35:06.188: D/PackageBroadcastService(2465): Received broadcast action=android.intent.action.PACKAGE_REMOVED and uri=com.example.httpclient
03-03 12:35:06.523: V/BackupManagerService(1995): updatePackageParticipantsLocked: com.example.httpclient
03-03 12:35:07.598: W/DeepLinking(3458): no deep link install data found for com.example.httpclient
03-03 12:35:07.663: D/PackageBroadcastService(2465): Received broadcast action=android.intent.action.PACKAGE_ADDED and uri=com.example.httpclient
03-03 12:35:07.703: D/PackageAddedReceiver(2234): package added com.example.httpclient
03-03 12:35:08.048: D/PackageBroadcastService(2465): Received broadcast action=android.intent.action.PACKAGE_REPLACED and uri=com.example.httpclient
解决方案
package com.example.httpclient;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import android.os.Build;
import android.os.Bundle;
import android.os.StrictMode;
import android.annotation.TargetApi;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.widget.TextView;
public class MainActivity extends Activity {
TextView myListView;
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//This is our textView element
myListView = (TextView) findViewById(R.id.tv);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
//Lets try to connect
try{
//Create a new client object
HttpClient httpclient = new DefaultHttpClient();
//Now post to your demo URL
HttpPost httppost = new HttpPost("http://10.0.2.2/testAndroid/test1.php");
//Execute the post and get the response
HttpResponse response = httpclient.execute(httppost);
//Get the message from the response
HttpEntity entity = response.getEntity();
//Get the content of the message
InputStream webs = entity.getContent();
//Convert response to string
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(webs, "iso-8859-1"), 8);
//Read one line of the response
myListView.setText(reader.readLine());
//Slow our inputStream
webs.close();
}catch(Exception e){
Log.e("log_tag", "Error converting result " + e.toString());
}
}catch(Exception e){
Log.e("log_tag", "Error in http connection " + e.toString());
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
PLz try this code, It is working fine. There should use
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
and Manifeast
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.httpclient"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.provider.testdemo.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
这篇关于获取信息从JSON的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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