android网络编程之——客户端上传信息的代码

添加Java 发送http请求的代码。

package com.my.hello;

import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

import android.content.IntentSender.SendIntentException;

public class ServiceSubmit {

public static boolean submitGet(String s1, String s2, String url) throws IOException{
Map<String,String> params = new HashMap<String,String>() ;
params.put("name", s1) ;
params.put("age", s2) ;

return sendGetQuest(url,params, "UTF-8") ;

}

public static boolean submitPost(String s1, String s2, String url) throws IOException{
Map<String,String> params = new HashMap<String,String>() ;
params.put("name", s1) ;
params.put("age", s2) ;

return sendPostQuest(url,params, "UTF-8") ;

}

public static boolean sendXMLQuest(String xml, String url) throws IOException{
byte[] data = xml.getBytes() ;
URL path = new URL(url) ;
HttpURLConnection conn = (HttpURLConnection) path.openConnection() ;

conn.setRequestMethod("POST") ;
conn.setDoOutput(true);
conn.setConnectTimeout(5 * 1000);
conn.setRequestProperty("Content-Type", "text/xml");
conn.setRequestProperty("Content-Length", String.valueOf(data.length));

return false;
}

private static boolean sendGetQuest(String url, Map<String, String> params,
String encoding) throws IOException {
StringBuilder sb = new StringBuilder(url) ;
if(params != null && !params.isEmpty()){
sb.append("?") ;
for(Map.Entry<String, String> entry:params.entrySet()){
sb.append(entry.getKey()).append("=") ;
sb.append(URLEncoder.encode(entry.getValue(),encoding)) ;
sb.append("&") ;
}
sb.deleteCharAt(sb.length()-1) ;
}

HttpURLConnection conn = (HttpURLConnection) new URL(sb.toString()).openConnection() ;
conn.setConnectTimeout(5000);
conn.setRequestMethod("GET");

if(conn.getResponseCode() == 200){
return true ;
}
return false;
}

private static boolean sendPostQuest(String url, Map<String, String> params,
String encoding) throws IOException {
StringBuilder sb = new StringBuilder() ;
if(params != null && !params.isEmpty()){
for(Map.Entry<String, String> entry:params.entrySet()){
sb.append(entry.getKey()).append("=") ;
sb.append(URLEncoder.encode(entry.getValue(),encoding)) ;
sb.append("&") ;
}
sb.deleteCharAt(sb.length()-1) ;
}

byte[] data = sb.toString().getBytes() ;
HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection() ;
conn.setConnectTimeout(5000);
conn.setRequestMethod("POST");
conn.setDoOutput(true); //允许对外传输数据
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", data.length + "");

OutputStream os = conn.getOutputStream() ;
os.write(data);
os.flush();

if(conn.getResponseCode() == 200){
return true ;
}
return false;
}

}

调用方法如下：

public void submitPostServer(String s1,String s2, String url) throws IOException{
boolean result = false ;
result = ServiceSubmit.submitPost(s1,s2, url) ;
if(result){
Toast.makeText(this, "this is ok,", 1).show();
}else{
Toast.makeText(this, "this is no ok,", 1).show();
}

}

case R.id.bt_submit:
String url_one = "http://172.27.251.31:8081/TestWeb/GetMethod" ;
String s1 = et_submit_1.getText().toString() ;
String s2 = et_submit_2.getText().toString() ;

try {
submitPostServer(s1, s2, url_one);

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}