例一：execute的用法，代码如下所示：
public class MainActivity extends AppCompatActivity {
private Button button;
private TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button) findViewById(R.id.button);
textView = (TextView) findViewById(R.id.textView2);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
new Thread(new Runnable() {
@Override
public void run() {
OkHttpClient okHttpClient = new OkHttpClient();
/* 如果发起一条POST请求要比GET请求复杂一点，代码如下：
RequestBody requestBody=new FormBody.Builder()
.add("username","admin")
.add("password","12345")
.build();
Request request = new Request.Builder()
.url("http://www.baidu.com")
.post(requestBody)//在这里调用post
.build();*/
Request request = new Request.Builder()
.url("http://www.baidu.com")
.build();
try {
Response response = okHttpClient.newCall(request).execute();
final String responsedata = response.body().string();
runOnUiThread(new Runnable() {
@Override
public void run() {
textView.setText(responsedata);
}
});
} catch (IOException e) {
e.printStackTrace();
}
}
}
).start();
}
});
}
}
例二：enqueue的用法，代码如下所示：
public class MainActivity extends AppCompatActivity {
private Button button;
private TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button) findViewById(R.id.button);
textView = (TextView) findViewById(R.id.textView2);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
OkHttpClient okHttpClient = new OkHttpClient();
Request request = new Request.Builder()
.url("http://www.baidu.com")
.build();
okHttpClient.newCall(request).enqueue(new Callback() {//enqueue与execute不同之处就在于，enqueue内部已经创建好了子线程，就不需要自己再创建了
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, final Response response) throws IOException {//被外部类调用的变量就需要加上final，并且加上final之后，这个变量将不能再给其指定新的堆地址或者是值
runOnUiThread(new Runnable() {
@Override
public void run() {
try {
textView.setText(response.body().string());
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
});
}
});
}
}
例三：post请求，以字符串的形式写入数据，代码如下所示：
OkHttpClient okHttpClient = new OkHttpClient();
MediaType mediaType=MediaType.parse("text/x-markdown; charset=utf-8");
Request request = new Request.Builder().url("https://api.github.com/markdown/raw").post(RequestBody.create(mediaType,"我是付晶晶")).build();
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
Log.d("MainActivity", "response.body():" + response.body().string());
//输出结果为：06-29 17:28:26.210 27763-27791/jiankang.liang.com.ceshi D/MainActivity: response.body():<p>我是付晶晶</p>
}
});
例四：post请求，以流的形式写入数据，代码如下所示：
OkHttpClient okHttpClient = new OkHttpClient();
RequestBody requestBody=new RequestBody() {
@Nullable
@Override
public MediaType contentType() {
return MediaType.parse("text/x-markdown; charset=utf-8");
}
@Override
public void writeTo(BufferedSink sink) throws IOException {
sink.write("提交流".getBytes());
}
};
Request request = new Request.Builder().url("https://api.github.com/markdown/raw").post(requestBody).build();
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
Log.d("MainActivity", "response.body():" + response.body().string());
//输出结果为：06-29 17:48:48.620 32505-32539/jiankang.liang.com.ceshi D/MainActivity: response.body():<p>提交流</p>
}
});
例五：post请求,上传文件到服务器，代码如下所示：
OkHttpClient okHttpClient = new OkHttpClient();
MediaType mediaType=MediaType.parse("text/x-markdown; charset=utf-8");
File file=new File("/storage/emulated/0/ceshi.txt");
RequestBody requestBody=RequestBody.create(mediaType,file);
Request request = new Request.Builder().url("https://api.github.com/markdown/raw").post(requestBody).build();
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
Log.d("MainActivity", "response.body():" + response.body().string());
//输出结果为：06-29 22:54:48.735 27302-27336/jiankang.liang.com.ceshi D/MainActivity: response.body():<p>woshiceshiwenjian</p>
}
});
例六：post请求,提交表单数据到服务器，代码如下所示：
OkHttpClient okHttpClient = new OkHttpClient();
RequestBody requestBody=new FormBody.Builder().add("search", "Jurassic Park").build();
Request request = new Request.Builder().url("https://en.wikipedia.org/w/index.php").post(requestBody).build();
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
Log.d("MainActivity", "response.body():" + response.body().string());
/*输出结果为：response.body():<!DOCTYPE html>
<html class="client-nojs" lang="en" dir="ltr">
<head>
<meta charset="UTF-8"/>
<title>Jurassic Park - Wikipedia</title>
<script>document.documentElement.className = document.documentElement.className.replace( /(^|\s)client-nojs(\s|$)/, "$1client-js$2" );</script>
<script>(window.RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNames" +
"paceNumber":0,"wgPageName":"Jurassic_Park","wgTitle":"Jurassic Park","wgCurRevisionId":847989431,"wgRevisionId":847989431,
"wgArticleId":11056991,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCat" +
"egories":["Pages using citations with format and no URL","All articles with dead external links","Articles with dead external" +
" links from December 2017","Articles with permanently dead external links","Wikipedia indefinitely move-protected pages","Use md" +
"y dates from June 2011","Wikipedia articles needing clarification from May 2016","Jurassic Park","Dinosaurs in fiction","Film serie" +
"s introduced in 1993","Films set in amusement parks","Universal Studios franchises","Cloning in fiction","Genetic engineering in ficti" +
"on","Science fiction films by series","Techno-thriller films","Amusement parks in fiction","Films adapted into video games","Films adapted...*/
}
});
