An open source project for processing network requests, it is the most popular lightweight framework on Android
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
<version>3.10.0</version>
</dependency>
Simple test okhttp Get request
package com.sb.okhttp.okhttp;
import java.io.IOException;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class Test {
// Create OkhttpClient object
OkHttpClient client = new OkHttpClient();
/**
* okhttp get synchronous request
*/
public void testGet(String url) {
Request request = new Request.Builder().get().url(url) // request address
.build();// Create Request object,
Response response = null;
try {
// Execute the request and get the Response object
response = client.newCall(request).execute();
} catch (IOException e) {
e.printStackTrace ();
}
if (null != response) {
if (response.isSuccessful()) {// The request is successful
System.out.println(response.code());// status code
System.out.println(response.message());// message
try {
String res = response.body().string();
System.out.println(res);
} catch (IOException e) {
e.printStackTrace ();
}
} else {
System.out.println("Request failed");
}
} else {
System.out.println("Request failed");
}
}
/**
* okhttp get asynchronous request
*/
public void asynchronousGet(String url){
Request request = new Request.Builder().get().url(url) // request address
.build();// Create Request object
client.newCall(request).enqueue(new Callback() {
public void onResponse(Call arg0, Response response) throws IOException {
//Note: the onResponse callback will be executed in the child thread, not the main thread
if (response.isSuccessful()) {// The request is successful
System.out.println(response.code());// status code
System.out.println(response.message());// message
try {
String res = response.body().string();
System.out.println(res);
} catch (IOException e) {
e.printStackTrace ();
}
} else {
System.out.println("Request failed");
}
}
//Note: the onFailure callback will be executed in the child thread, not the main thread
public void onFailure(Call arg0, IOException arg1) {
System.out.println("Request failed");
}
});
}
public static void main(String[] args) {
Test t = new Test();
String url = "http://www.baidu.com";
//t.testGet(url);
t.asynchronousGet(url);
}
}
Test okhttp Post request
package com.sb.okhttp.okhttp;
import java.io.File;
import java.io.IOException;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
public class TestPost {
//data type json
public static final MediaType mediaType = MediaType.parse("application/json;charset=utf-8");
//Data type File
public static final MediaType mediaType_file = MediaType.parse("File/*");
OkHttpClient client = new OkHttpClient();
/**
* Post submit Json data
* @param url submitted address
* @param json submit json data
* @return returns the result data returned after post
*/
public String postJson(String url,String json){
RequestBody body = RequestBody.create(mediaType,json);
Request request = new Request.Builder().url(url).post(body).build();
Response response = null;
try {
response = client.newCall(request).execute();
if(null!=response){
if(response.isSuccessful()){
return response.body().string();
}
}
} catch (IOException e) {
e.printStackTrace ();
}
return null;
}
/**
* okhttp simulate form submission
* @param url post address
*/
public void postKeyValue(String url ){
FormBody.Builder formBody = new FormBody.Builder();//Create form request body
formBody.add("name","zbb");
formBody.add("age","26");
Request request = new Request.Builder() //Create a request object
.url(url)
.post(formBody.build()) //Pass the request body
.build();
client.newCall(request).enqueue(new Callback() {
public void onResponse(Call call, Response res) throws IOException {
//Callback after the request is successfully responded
if(res.isSuccessful()){
String result = res.body().string();
System.out.println(result);
}
}
public void onFailure(Call call, IOException arg1) {
//Callback after the request fails
//.... code omitted here
}
});
}
/**
* okhttp upload File object
* @param filePath file path
* @param url the address to submit to
*/
public void postFile(String filePath,String url){
File file = new File(filePath);
RequestBody body = RequestBody.create(mediaType_file,file);
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
client.newCall(request).enqueue(new Callback() {
public void onResponse(Call arg0, Response arg1) throws IOException {
//Callback after the request is successfully responded
//.....
}
public void onFailure(Call arg0, IOException arg1) {
//Callback after the request fails
//.....
}
});
}
/**
* okhttp post both pass form parameters and submit File
* @param file file object
* @param url the address to submit to
*/
public void postMultipartBody(File file,String url){
MultipartBody body = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("name","zbb")
.addFormDataPart("age","26")
.addFormDataPart("f",file.getName(),
RequestBody.create(mediaType_file,file))
.build();
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
client.newCall(request).enqueue(new Callback() {
public void onResponse(Call arg0, Response arg1) throws IOException {
//Callback after the request is successfully responded
//.....
}
public void onFailure(Call arg0, IOException arg1) {
//Callback after the request fails
//.....
}
});
}
public static void main(String[] args) {
}
}