注意：要搭建好环境，运行
用volley方法时要把包导入project下的模块下的libs目录下
package com.example.chenshuai.myapplication; import android.app.ProgressDialog;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast; import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley; import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.Map; public class MainActivity extends AppCompatActivity { EditText et_bt_3;
EditText et_bt_4; RequestQueue requestQueue;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); et_bt_3 = (EditText)findViewById(R.id.et_bt_3);
et_bt_3.setText("http://192.168.1.104:8080/TestWeb/index.jsp"); et_bt_4 = (EditText)findViewById(R.id.et_bt_4); //获取Volley的请求队列
requestQueue = Volley.newRequestQueue(this);
}
public void getonclick(View view)
{
//1.
/*
* 使用httpUrlConnection提交get请求
*/
/*
1. 显示ProgressDialog
2. 启动分线程
3. 在分线程, 发送请求, 得到响应数据
1). 得到path, 并带上参数name=Tom1&age=11
2). 创建URL对象
3). 打开连接, 得到HttpURLConnection对象
4). 设置请求方式,连接超时, 读取数据超时
5). 连接服务器
6). 发请求, 得到响应数据
得到响应码, 必须是200才读取
得到InputStream, 并读取成String
7). 断开连接
4. 在主线程, 显示得到的结果, 移除dialog
*/
//1. 显示ProgressDialog
final ProgressDialog progressDialog = ProgressDialog.show(this,null,"正在请求中..."); //2. 访问网络 开启子线程 new Thread()
{
@Override
public void run() { try { //1.URl
URL url = new URL(et_bt_3.getText().toString()+"?name=tom"); //2.获取连接
HttpURLConnection huc = (HttpURLConnection)url.openConnection(); //3.请求方式
huc.setRequestMethod("GET");
//设置超时
huc.setConnectTimeout(3000);
huc.setReadTimeout(3000); //连接并发送请求
huc.connect(); //接收
//判断返回状态 200
int code = huc.getResponseCode(); if (code == 200)
{
//接收数据 //输入流
InputStream is = huc.getInputStream();
//读取流
//1- byte数组
byte[] b = new byte[1024];
//2- 读到数组的长度
int i=0;
//3.接收到的数据
final StringBuilder sbl = new StringBuilder(); //边读边写
while((i=is.read(b))>0)
{
sbl.append(new String(b,0,i));
}
//释放资源
is.close();
huc.disconnect(); //通过主线程显示信息和关闭对话框
runOnUiThread(new Runnable() {
@Override
public void run() {
et_bt_4.setText(sbl); //关闭对话框
progressDialog.dismiss();
}
}); }
else
{
Toast.makeText(MainActivity.this, "连接错误，返回的状态码= " + code, Toast.LENGTH_SHORT).show();
} } catch (Exception e) {
e.printStackTrace();
progressDialog.dismiss();
} super.run();
}
}.start(); } public void postonclick(View view)
{ //1. 显示ProgressDialog 进度对话框
final ProgressDialog dialog = ProgressDialog.show(this, null, "正在加载中，请稍后...");
//2.开启子线程 访问网络
new Thread()
{
public void run()
{
try
{
//1) -URL
URL url = new URL(et_bt_3.getText().toString());
//2) -URL获取连接
HttpURLConnection huc =(HttpURLConnection)url.openConnection(); //请求方式
huc.setRequestMethod("POST");
//设置超时
huc.setConnectTimeout(3000);
huc.setReadTimeout(3000); //连接并发送请求
huc.connect(); //用输出流设置请求体
OutputStream os = huc.getOutputStream(); String str = "name=rose";
os.write(str.getBytes("UTF-8")); //接收：
//判断返回状态码 200
int code = huc.getResponseCode(); if (code == 200)
{
//接收数据 //输入流:
InputStream is = huc.getInputStream(); //读取流
//1-byte数组
byte[] b = new byte[1024];
//2-读到的长度
int i = 0;
//3-接收到的数据
final StringBuilder sbl = new StringBuilder(); while ((i = is.read(b))>0)
{
sbl.append(new String(b,0,i));
}
//释放资源
is.close();
huc.disconnect(); //通过主线程显示信息和关闭对话框
runOnUiThread(new Runnable() {
@Override
public void run() {
et_bt_4.setText(sbl);
//关闭对话框
dialog.dismiss();
}
}); }
else {
Toast.makeText(MainActivity.this, "连接错误，返回状态码=" + code, Toast.LENGTH_SHORT).show();
} } catch (Exception e)
{
e.printStackTrace(); dialog.dismiss();
}
} }.start();
} public void volleygetonclick(View view)
{
//1.进度对话框
final ProgressDialog progressDialog = ProgressDialog.show(this,null,"正在加载，请稍后。。。"); //构造Volley的请求对象 参数:1-地址 2-正常处理监听 3-错误处理监听
StringRequest sr = new StringRequest(et_bt_3.getText().toString() + "?name=jack", new Response.Listener<String>() {
@Override
public void onResponse(String s) { et_bt_4.setText(s); progressDialog.dismiss(); }
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) { Toast.makeText(MainActivity.this, "访问异常", Toast.LENGTH_SHORT).show();
//出错也要关闭
progressDialog.dismiss(); }
}); //把请求对象放入队列
requestQueue.add(sr);
} public void volleypostonclick(View view)
{
//1.进度对话框
final ProgressDialog progressDialog = ProgressDialog.show(this,null,"正在加载，请稍后。。。"); //构造Volley的请求对象
StringRequest sr = new StringRequest(Request.Method.POST,et_bt_3.getText().toString(), new Response.Listener<String>() {
@Override
public void onResponse(String s) { et_bt_4.setText(s);
progressDialog.dismiss(); }
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) { Toast.makeText(MainActivity.this, "访问异常", Toast.LENGTH_SHORT).show();
progressDialog.dismiss();
}
}){
//重写设置参数的方法
@Override
protected Map<String, String> getParams() throws AuthFailureError { Map<String,String> m = new HashMap<String,String>();
m.put("name","volley"); return m;
}
};
//把请求对象放入队列 requestQueue.add(sr); }
}