android原生http,android 原生GET和POST提交数据

package com.example.get;

import java.io.ByteArrayOutputStream;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.PrintWriter;

import java.io.Reader;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLEncoder;

import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.view.View;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends Activity {

Handler handler = new Handler() {

public void handleMessage(android.os.Message msg) {

if (msg.what == 0) {

Toast.makeText(MainActivity.this, "服务器异常", 0).show();

} else if (msg.what == 1) {

Toast.makeText(MainActivity.this, msg.obj.toString(), 0).show();

}

};

};

private String password;

private String name;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

public void doLogin(View v) {

EditText etName = (EditText) findViewById(R.id.et_name);

EditText etPwd = (EditText) findViewById(R.id.et_password);

name = etName.getText().toString();

password = etPwd.getText().toString();

fetch();

}

public void doLoginForPost(View v) {

EditText etName = (EditText) findViewById(R.id.et_name);

EditText etPwd = (EditText) findViewById(R.id.et_password);

name = etName.getText().toString();

password = etPwd.getText().toString();

fetchPost();

}

public void fetch() {

Thread t = new Thread() {

@Override

public void run() {

super.run();

String path = "http://192.168.1.105:8080/android/AndroidServlet?username="

+ URLEncoder.encode(name)

+ "&password="

+ URLEncoder.encode(password);

try {

URL url = new URL(path);

HttpURLConnection conn = (HttpURLConnection) url

.openConnection();

conn.setRequestMethod("GET");

conn.setReadTimeout(5000);

conn.setConnectTimeout(5000);

if (conn.getResponseCode() == 200) {

InputStream is = conn.getInputStream();

byte[] b = new byte[1024];

int len = 0;

// 创建字节数组输出流,读取输入流的文本数据时,同步把数据写入数组输出流

ByteArrayOutputStream bos = new ByteArrayOutputStream();

while ((len = is.read(b)) != -1) {

bos.write(b, 0, len);

}

// 把字节数组输出流的数据转换成字节数组

String text = new String(bos.toByteArray(), "utf-8");

Message msg = new Message();

msg.what = 1;

msg.obj = text;

handler.sendMessage(msg);

} else {

handler.sendEmptyMessage(0);

}

} catch (Exception e) {

e.printStackTrace();

}

}

};

t.start();

}

public void fetchPost() {

Thread t = new Thread() {

@Override

public void run() {

super.run();

String path = "http://192.168.1.105:8080/android/AndroidServlet";

try {

URL url = new URL(path);

HttpURLConnection conn = (HttpURLConnection) url

.openConnection();

conn.setRequestMethod("POST");

conn.setReadTimeout(5000);

conn.setConnectTimeout(5000);

String params = "username=" + URLEncoder.encode(name)

+ "&password=" + URLEncoder.encode(password);

conn.setRequestProperty("Content-Type",

"application/x-www-form-urlencoded");

conn.setRequestProperty("Content-Length", params.length()

+ "");

// 设置打开输出流

conn.setDoOutput(true);

// 拿到输出流

OutputStream os = conn.getOutputStream();

os.write(params.getBytes());

os.flush();

if (conn.getResponseCode() == 200) {

InputStream is = conn.getInputStream();

byte[] b = new byte[1024];

int len = 0;

// 创建字节数组输出流,读取输入流的文本数据时,同步把数据写入数组输出流

ByteArrayOutputStream bos = new ByteArrayOutputStream();

while ((len = is.read(b)) != -1) {

bos.write(b, 0, len);

}

// 把字节数组输出流的数据转换成字节数组

String text = new String(bos.toByteArray(), "utf-8");

Message msg = new Message();

msg.what = 1;

msg.obj = text;

handler.sendMessage(msg);

} else {

handler.sendEmptyMessage(0);

}

} catch (Exception e) {

e.printStackTrace();

}

}

};

t.start();

}

}