访问远程服务器 之 httpUrlConnection(原生)OkHttp(框架)volley(框架)
注意访问网络必须在分线程执行
xml布局文件
activity代码--使用httpUrlConnection实现Get
//使用httpUrlConnection实现Get
public void urlConnectionGet(View view) {
Log.i("godv", "urlConnectionGet");
//显示progressDialog
final ProgressDialog dialog = ProgressDialog.show(this, null, "正在请求中");
//启动分线程 发送数据 得到响应
new Thread() {
public void run() {
Log.i("godv", "run");
//创建url对象
String path = et_network_url.getText().toString() + "?name=godv&age=17";
Log.i("godv", "path = " + path);
try {
URL url = new URL(path);
//打开连接 url.openConnection()返回URLConnection接口
//但是这里我们需要一个实现类
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
Log.i("godv", "HttpURLConnection = " + connection);
//设置请求方式 连接超时时间 读取数据超时时间
connection.setRequestMethod("GET");
connection.setConnectTimeout(6000);
connection.setReadTimeout(6000);
Log.i("godv", "setReadTimeout");
//连接服务器
connection.connect();
Log.i("godv", "connection = " + connection);
//得到响应码
int responseCode = connection.getResponseCode();
Log.i("godv", "responseCode = " + responseCode);
if (responseCode == 200) {
//得到输入流 写数据
InputStream is = connection.getInputStream();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = -1;
while ((len = is.read(buffer)) != -1) {
baos.write(buffer, 0, len);
}
final String result = baos.toString();
Log.i("godv", result);
baos.close();
is.close();
//在主线程更新界面
runOnUiThread(new Runnable() {
@Override
public void run() {
et_network_result.setText(result);
dialog.dismiss();
}
});
}
//断开连接
connection.disconnect();
} catch (Exception e) {
Log.i("godv", "异常 = " + e.getMessage());
}
}
}.start();
}使用httpUrlConnection实现Post
public void urlConnectionPost(View view) {
//显示progressDialog
final ProgressDialog dialog = ProgressDialog.show(this, null, "正在请求中");
//启动分线程 发送数据 得到响应
new Thread(new Runnable() {
@Override
public void run() {
Log.i("godv", "run");
//创建url对象
String path = et_network_url.getText().toString();
Log.i("godv", "path = " + path);
try {
URL url = new URL(path);
//打开连接 url.openConnection()返回URLConnection接口
//但是这里我们需要一个实现类
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
Log.i("godv", "HttpURLConnection = " + connection);
//设置请求方式 连接超时时间 读取数据超时时间
connection.setRequestMethod("POST");
connection.setConnectTimeout(5000);
connection.setReadTimeout(6000);
Log.i("godv", "setReadTimeout");
//连接服务器
connection.connect();
Log.i("godv", "connection = " + connection);
//得到输出流 写请求体
OutputStream os = connection.getOutputStream();
String data = "name=godv&age=11";
os.write(data.getBytes("utf-8"));
//得到响应码
int responseCode = connection.getResponseCode();
Log.i("godv", "responseCode = " + responseCode);
if (responseCode == 200) {
//得到输入流 写数据
InputStream is = connection.getInputStream();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = -1;
while ((len = is.read(buffer)) != -1) {
baos.write(buffer, 0, len);
}
final String result = baos.toString();
Log.i("godv", result);
baos.close();
is.close();
//在主线程更新界面
runOnUiThread(new Runnable() {
@Override
public void run() {
et_network_result.setText(result);
dialog.dismiss();
}
});
}
os.close();
//断开连接
connection.disconnect();
} catch (Exception e) {
Log.i("godv", "异常 = " + e.getMessage());
}
}
}).start();
}使用OkHttpClient实现Get
依赖
implementation 'com.squareup.okhttp3:okhttp:3.10.0'分享个文章关于 OkHttpClient使用的https://www.jianshu.com/p/da4a806e599b
public void OkHttpClientGet(View view) {
Log.i("godv", "urlConnectionGet");
//显示progressDialog
final ProgressDialog dialog = ProgressDialog.show(this, null, "正在请求中");
try {
Log.i("godv", "run");
//创建url对象
String path = et_network_url.getText().toString() + "?name=godv&age=17";
Log.i("godv", "path = " + path);
//创建OkHttpClient对象
OkHttpClient okHttpClient = new OkHttpClient();
// 得到 request对象 并设置url
final Request request = new Request.Builder()
.url(path)
.get()//默认就是GET请求，可以不写
.build();
//通过前两步中的对象构建Call对象
Call call = okHttpClient.newCall(request);
//通过Call#enqueue(Callback)方法来提交异步请求
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Log.d("godv", "onFailure: ");
}
@Override
public void onResponse(Call call, Response response) throws IOException {
// Log.d("godv", "onResponse: " + response.body().string());
//得到响应体文本
final String result = response.body().string();
//在主线程更新界面
runOnUiThread(new Runnable() {
@Override
public void run() {
et_network_result.setText(result);
dialog.dismiss();
}
});
}
});
} catch (Exception e) {
e.printStackTrace();
}
}使用OkHttpClient实现Post
public void OkHttpClientPost(View view) {
Log.i("godv", "urlConnectionGet");
//显示progressDialog
final ProgressDialog dialog = ProgressDialog.show(this, null, "正在请求中");
RequestBody requestBody = new FormBody.Builder()
.add("name", "godv")
.add("age", "99")
.build();
try {
Log.i("godv", "run");
//创建url对象
String path = et_network_url.getText().toString();
Log.i("godv", "path = " + path);
//创建OkHttpClient对象
OkHttpClient okHttpClient = new OkHttpClient();
// 得到 request对象 并设置url
final Request request = new Request.Builder()
.url(path)
.post(requestBody)
.build();
//通过前两步中的对象构建Call对象
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Log.d("godv", "onFailure: " + e.getMessage());
}
@Override
public void onResponse(Call call, Response response) throws IOException {
Log.d("godv", response.protocol() + " " + response.code() + " " + response.message());
Headers headers = response.headers();
for (int i = 0; i < headers.size(); i++) {
Log.d("godv", headers.name(i) + ":" + headers.value(i));
}
// Log.d("godv", "onResponse: " + response.body().string());
final String result = response.body().string();
//在主线程更新界面
runOnUiThread(new Runnable() {
@Override
public void run() {
et_network_result.setText(result);
dialog.dismiss();
}
});
}
});
} catch (Exception e) {
e.printStackTrace();
}
}使用Volley实现Get
依赖
implementation 'com.android.volley:volley:1.1.1'分享个文章关于 Volley使用的https://blog.csdn.net/u010356768/article/details/87720280
创建 RequestQueue 队列 1次 在onCreate 中创建 ）
RequestQueue queue;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
queue = Volley.newRequestQueue(this);
}
public void volleyGet(View view) {
final ProgressDialog dialog = ProgressDialog.show(this, null, "正在请求中");
//创建请求对象 StringRequest
//创建url
String path = et_network_url.getText().toString() + "?name=godv&age=14";
//参数二
StringRequest request = new StringRequest(path, new com.android.volley.Response.Listener() {
//onResponse 在主线程执行
@Override
public void onResponse(String response) {
et_network_result.setText(response);
dialog.dismiss();
}
}, null);
//添加请求至队列
queue.add(request);
} 使用Volley实现Post
public void volleyPost(View view) {
final ProgressDialog dialog = ProgressDialog.show(this, null, "正在请求中");
//创建请求对象 StringRequest
//创建url
String path = et_network_url.getText().toString();
//参数二
StringRequest request = new StringRequest(com.android.volley.Request.Method.POST, path, new com.android.volley.Response.Listener() {
@Override
public void onResponse(String response) {
et_network_result.setText(response);
dialog.dismiss();
}
}, null) {
//重写getParams 返回参数map作为请求体
@Override
protected Map getParams() throws AuthFailureError {
Map map = new HashMap<>();
map.put("name", "godv");
map.put("age", "12");
return map;
}
};
//添加请求至队列
queue.add(request);
} 访问网络权限
允许使用http android:usesCleartextTraffic="true"