android 76 使用get post方式提交数据

时间:2022-02-08 21:27:16

get方式:

package com.itheima.getmethod;

import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLDecoder;
import java.net.URLEncoder; import com.itheima.htmlviewer.utils.Utils; import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast; public class MainActivity extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
} Handler handler = new Handler(){
public void handleMessage(android.os.Message msg) {
Toast.makeText(MainActivity.this, (String)msg.obj, 0).show();
}
}; public void click(View v){
EditText et_name = (EditText) findViewById(R.id.et_name);
EditText et_pass = (EditText) findViewById(R.id.et_pass); final String name = et_name.getText().toString();
final String pass = et_pass.getText().toString(); Thread t = new Thread(){
@Override
public void run() {
//提交的数据需要经过url编码(utf-8编码),英文和数字编码后不变,如果是浏览器会自动编码,客户端要手动编码
@SuppressWarnings("deprecation")
String path = "http://192.168.13.13/Web2/servlet/LoginServlet?name=" + URLEncoder.encode(name) + "&pass=" + pass; try {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(5000);
conn.setReadTimeout(5000); if(conn.getResponseCode() == 200){
InputStream is =conn.getInputStream();
String text = Utils.getTextFromStream(is); Message msg = handler.obtainMessage();
msg.obj = text;
handler.sendMessage(msg);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
t.start(); } }
package com.itheima.htmlviewer.utils;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream; public class Utils { public static String getTextFromStream(InputStream is){ 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();
try {
while((len = is.read(b)) != -1){
bos.write(b, 0, len);
}
//把字节数组输出流里的数据转换成字节数组
String text = new String(bos.toByteArray());
return text;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}

windowsmore编码是gbk,安卓默认编码是utf-8.

post方式:

package com.itheima.getmethod;

import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLDecoder;
import java.net.URLEncoder; import com.itheima.htmlviewer.utils.Utils;
import com.itheima.postmethod.R; import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast; public class MainActivity extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
} Handler handler = new Handler(){
public void handleMessage(android.os.Message msg) {
Toast.makeText(MainActivity.this, (String)msg.obj, 0).show();
}
}; public void click(View v){
EditText et_name = (EditText) findViewById(R.id.et_name);
EditText et_pass = (EditText) findViewById(R.id.et_pass); final String name = et_name.getText().toString();
final String pass = et_pass.getText().toString(); Thread t = new Thread(){
@Override
public void run() {
//提交的数据需要经过url编码,英文和数字编码后不变
@SuppressWarnings("deprecation")
String path = "http://192.168.13.13/Web2/servlet/LoginServlet"; try {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setConnectTimeout(5000);
conn.setReadTimeout(5000); //拼接出要提交的数据的字符串
String data = "name=" + URLEncoder.encode(name) + "&pass=" + pass;
//添加post请求的两行属性
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", data.length() + ""); //设置打开输出流
conn.setDoOutput(true);
//拿到客户端像服务端的输出流
OutputStream os = conn.getOutputStream();
//使用输出流往服务器提交数据,
os.write(data.getBytes());//这个时候还没有产生网络交互数据
if(conn.getResponseCode() == 200){//建立连接,产生网络交互数据
InputStream is = conn.getInputStream();//得到服务器返回的输入流
String text = Utils.getTextFromStream(is); Message msg = handler.obtainMessage();
msg.obj = text;
handler.sendMessage(msg);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
t.start(); } }