android app与服务器交互
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互联网集市收集整理的这篇技术教程文章主要介绍了android app与服务器交互，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含4343字，纯文字阅读大概需要7分钟。
内容图文
package
mydemo.mycom.demo2.service;
import
org.apache.http.HttpResponse;
import
org.apache.http.NameValuePair;
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
java.io.InputStream;
import
java.io.OutputStream;
import
java.net.HttpURLConnection;
import
java.net.URL;
import
java.util.ArrayList;
import
java.util.List;
import
mydemo.mycom.demo2.utils.StreamTools;
/**
* Created by Administrator on 2015/5/20.
*/
public
class
NetService {
//
使用URL的Get 方式请求服务器
public
static
String loginByGet(String username, String password) {
try
{
String path = "http://192.168.1.110:1010/UserInfo/Login?username=" + username + "&password=" + password;
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
conn.setRequestMethod("GET");
int code = conn.getResponseCode();
if (code == 200) {
//请求成功
InputStream is = conn.getInputStream();
String result = StreamTools.readInputStream(is);
return result;
} else {
//请求失败returnnull;
}
} catch (Exception e) {
e.printStackTrace();
}
returnnull;
}
//使用URL的Post 方式请求服务器publicstatic String loginByPost(String username, String password) {
try {
String path = "http://192.168.1.110:1010/UserInfo/Login";
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
conn.setRequestMethod("POST");
String data = "username=" + username + "&password=" + password;
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", data.length() + "");
//post 的方式 实际上是浏览器把数据 写给了服务器
conn.setDoInput(true);
OutputStream os = conn.getOutputStream();
os.write(data.getBytes());
int code = conn.getResponseCode();
if (code == 200) {
//请求成功
InputStream is = conn.getInputStream();
String result = StreamTools.readInputStream(is);
return result;
} else {
//请求失败returnnull;
}
} catch (Exception e) {
e.printStackTrace();
}
returnnull;
}
//使用HttpClient的Get 方式请求服务器 （HttpClient 过时）publicstatic String loginByClientGet(String username, String password) {
try {
HttpClient client = new DefaultHttpClient();
String path = "http://192.168.1.110:1010/UserInfo/Login?username=" + username + "&password=" + password;
HttpGet httpget = new HttpGet(path);
HttpResponse response = client.execute(httpget);
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
//请求成功
InputStream is = response.getEntity().getContent();
String result = StreamTools.readInputStream(is);
return result;
} else {
//请求失败returnnull;
}
} catch (Exception e) {
e.printStackTrace();
}
returnnull;
}
//使用HttpClient的Post 方式请求服务器 （HttpClient 过时）publicstatic String loginByClientPost(String username, String password) {
try {
HttpClient client = new DefaultHttpClient();
String path = "http://192.168.1.110:1010/UserInfo/Login";
HttpPost httppost = new HttpPost(path);
//指定要提交的数据实体
List<NameValuePair> list = new ArrayList<NameValuePair>();
list.add(new BasicNameValuePair("username", username));
list.add(new BasicNameValuePair("password", password));
httppost.setEntity(new UrlEncodedFormEntity(list, "UTF_8"));
HttpResponse response = client.execute(httppost);
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
//请求成功
InputStream is = response.getEntity().getContent();
String result = StreamTools.readInputStream(is);
return result;
} else {
//请求失败returnnull;
}
} catch (Exception e) {
e.printStackTrace();
}
returnnull;
}
}
//将InputStream 转为 String
package
mydemo.mycom.demo2.utils;
import
java.io.ByteArrayOutputStream;
import
java.io.InputStream;
public
class
StreamTools {
//
InputStream 转为 String
public
static
String readInputStream(InputStream is)
{
try
{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int len =0;
byte[] buffer = newbyte[1024];
while((len=is.read(buffer))!=-1)
{
baos.write(buffer,0,len);
}
is.close();
baos.close();
byte[] result = baos.toByteArray();
String temp = new String(result);
return temp;
}catch (Exception e)
{
e.printStackTrace();
returnnull;
}
}
}
原文：http://www.cnblogs.com/zoro-zero/p/4682085.html
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