node.js+Android(安卓)http请求响应

http://www.linuxidc.com/Linux/2012-02/53539.htm

上次做了一个demo，试验如何用node.js响应get post请求，http请求使用的浏览器。我现在正在学Android，所以决定写一个两者结合的demo。node.js做服务端接收get post请求，android做客户端发送get post请求。

相关阅读：

http://www.linuxidc.com/Linux/2012-02/53536.htm与http://www.linuxidc.com/Linux/2012-02/53537.htm

先上node.js的代码（保存为example6.js）：

[javascript]

varhttp=require('http');
varserver=http.createServer();
varquerystring=require('querystring');
varpostResponse=function(req,res){
varinfo='';
req.addListener('data',function(chunk){
info+=chunk;
})
.addListener('end',function(){
info=querystring.parse(info);
res.setHeader('content-type','text/html;charset=UTF-8');//响应编码
res.end('HelloWorldPOST'+info.name,'utf8');
})
}
vargetResponse=function(req,res){
res.writeHead(200,{'Content-Type':'text/plain'});
varname=require('url').parse(req.url,true).query.name
res.end('HelloWorldGET'+name,'utf8');
}
varrequestFunction=function(req,res){
req.setEncoding('utf8');//请求编码
if(req.method=='POST'){
returnpostResponse(req,res);
}
returngetResponse(req,res);
}
server.on('request',requestFunction);
server.listen(8080,"192.168.9.194");
console.log('Serverrunningathttp://192.168.9.194:8080/');

代码基本和上次一样，主要是绑定的地址和端口变了(这个很重要，后边再讲)

再上android源代码：

layout main,xml如下

[html]

<?xmlversion="1.0"encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="javaget"
android:onClick="javaGet"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="javapost"
android:onClick="javaPost"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="apacheget"
android:onClick="apacheGet"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="apachepost"
android:onClick="apachePost"/>
</LinearLayout>
</LinearLayout>

AndroidManifest.xml需要添加如下内容：

[html]

<uses-permissionandroid:name="android.permission.INTERNET"/>

java源代码如下：

[java]

packagecom.zhang.test08_01;
importjava.io.BufferedInputStream;
importjava.io.BufferedOutputStream;
importjava.io.BufferedReader;
importjava.io.IOException;
importjava.io.InputStream;
importjava.io.InputStreamReader;
importjava.io.OutputStream;
importjava.io.OutputStreamWriter;
importjava.io.UnsupportedEncodingException;
importjava.io.Writer;
importjava.net.HttpURLConnection;
importjava.net.MalformedURLException;
importjava.net.ProtocolException;
importjava.net.URL;
importjava.net.URLEncoder;
importjava.util.ArrayList;
importjava.util.List;
importorg.apache.http.HttpEntity;
importorg.apache.http.HttpResponse;
importorg.apache.http.NameValuePair;
importorg.apache.http.ParseException;
importorg.apache.http.client.ClientProtocolException;
importorg.apache.http.client.HttpClient;
importorg.apache.http.client.entity.UrlEncodedFormEntity;
importorg.apache.http.client.methods.HttpGet;
importorg.apache.http.client.methods.HttpPost;
importorg.apache.http.client.methods.HttpUriRequest;
importorg.apache.http.impl.client.DefaultHttpClient;
importorg.apache.http.message.BasicNameValuePair;
importorg.apache.http.protocol.HTTP;
importorg.apache.http.util.EntityUtils;
importandroid.app.Activity;
importandroid.os.Bundle;
importandroid.view.View;
importandroid.widget.TextView;
publicclassTest08_01ActivityextendsActivity{
privateTextViewtextView1;
//Youcan'tuselocalhost;localhostisthe(emulated)phone.Youneed
//tospecifytheIPaddressorDNSnameoftheactualwebserver.
privatestaticfinalStringTEST_URL="http://192.168.9.194:8080/";
@Override
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
textView1=(TextView)findViewById(R.id.textView1);
}
publicvoidjavaGet(Viewv){
Stringstr="";
try{
str=URLEncoder.encode("抓哇","UTF-8");
}catch(UnsupportedEncodingExceptione){
}
URLurl=null;
try{
url=newURL(TEST_URL+"?name=javaGet"+str);
}catch(MalformedURLExceptione){
}
HttpURLConnectionurlConnection=null;
try{
urlConnection=(HttpURLConnection)url.openConnection();
}catch(IOExceptione){
textView1.setText(e.getMessage());
return;
}
//methodThedefaultvalueis"GET".
getResponseJava(urlConnection);
}
publicvoidjavaPost(Viewv){
URLurl=null;
try{
url=newURL(TEST_URL);
}catch(MalformedURLExceptione){
}
HttpURLConnectionurlConnection=null;
try{
urlConnection=(HttpURLConnection)url.openConnection();
}catch(IOExceptione){
textView1.setText(e.getMessage());
return;
}
try{
urlConnection.setRequestMethod("POST");
}catch(ProtocolExceptione){
}
urlConnection.setDoOutput(true);
urlConnection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
OutputStreamout=null;
try{
out=newBufferedOutputStream(urlConnection.getOutputStream());//请求
}catch(IOExceptione){
urlConnection.disconnect();
textView1.setText(e.getMessage());
return;
}
Stringstr="";
try{
str=URLEncoder.encode("抓哇","UTF-8");
}catch(UnsupportedEncodingExceptione){
}
Writerwriter=null;
try{
writer=newOutputStreamWriter(out,"UTF-8");
}catch(UnsupportedEncodingExceptione1){
}
try{
writer.write("name=javaPost"+str);
}catch(IOExceptione){
urlConnection.disconnect();
textView1.setText(e.getMessage());
return;
}finally{
try{
writer.flush();
writer.close();
}catch(IOExceptione){
}
}
getResponseJava(urlConnection);
}
publicvoidapacheGet(Viewv){
HttpGetrequest=newHttpGet(TEST_URL+"?name=apacheGet阿帕奇");
getResponseApache(request);
}
publicvoidapachePost(Viewv){
HttpPostrequest=newHttpPost(TEST_URL);
List<NameValuePair>params=newArrayList<NameValuePair>(1);
params.add(newBasicNameValuePair("name","apachePost阿帕奇"));
HttpEntityformEntity=null;
try{
formEntity=newUrlEncodedFormEntity(params,HTTP.UTF_8);
}catch(UnsupportedEncodingExceptione){
}
request.setEntity(formEntity);
getResponseApache(request);
}
privatevoidgetResponseJava(HttpURLConnectionurlConnection){
InputStreamin=null;
try{
in=newBufferedInputStream(urlConnection.getInputStream());//响应
}catch(IOExceptione){
urlConnection.disconnect();
textView1.setText(e.getMessage());
return;
}
BufferedReaderreader=null;
try{
reader=newBufferedReader(newInputStreamReader(in,"UTF-8"));
}catch(UnsupportedEncodingExceptione1){
}
StringBuilderresult=newStringBuilder();
Stringtmp=null;
try{
while((tmp=reader.readLine())!=null){
result.append(tmp);
}
}catch(IOExceptione){
textView1.setText(e.getMessage());
return;
}finally{
try{
reader.close();
urlConnection.disconnect();
}catch(IOExceptione){
}
}
textView1.setText(result);
}
privatevoidgetResponseApache(HttpUriRequestrequest){
HttpClientclient=newDefaultHttpClient();
HttpResponseresponse=null;
try{
response=client.execute(request);
}catch(ClientProtocolExceptione){
textView1.setText(e.getMessage());
}catch(IOExceptione){
textView1.setText(e.getMessage());
}
if(response==null){
return;
}
Stringresult=null;
if(response.getStatusLine().getStatusCode()==200){
try{
result=EntityUtils.toString(response.getEntity(),"UTF-8");
}catch(ParseExceptione){
result=e.getMessage();
}catch(IOExceptione){
result=e.getMessage();
}
}else{
result="errorresponse"+response.getStatusLine().toString();
}
textView1.setText(result);
}
}

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