okhttp3简单封装GET和POST请求工具类
简单封装了okhttp3的工具类以便于以后直接拿来使用。
使用的okhttp版本为：
compile 'com.squareup.okhttp3:okhttp:3.8.1'该工具类的功能如下：
- Get请求，同步方式获取网络数据
- Post请求，同步方式获取数据
- Get请求，异步方式获取网络数据
- Post请求，异步方式获取数据
- 支持HTTPS请求，自动跳过证书验证
- 判断当前网络是否可用
其中Post请求提交的是键值对
1. 完整代码
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.util.Log;
import java.io.IOException;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
/**
* Created by fxjzzyo on 2017/7/12.
*/
public class NetUtils {
private static final byte[] LOCKER = new byte[0];
private static NetUtils mInstance;
private OkHttpClient mOkHttpClient;
private NetUtils() {
okhttp3.OkHttpClient.Builder ClientBuilder=new okhttp3.OkHttpClient.Builder();
ClientBuilder.readTimeout(20, TimeUnit.SECONDS);//读取超时
ClientBuilder.connectTimeout(6, TimeUnit.SECONDS);//连接超时
ClientBuilder.writeTimeout(60, TimeUnit.SECONDS);//写入超时
//支持HTTPS请求，跳过证书验证
ClientBuilder.sslSocketFactory(createSSLSocketFactory());
ClientBuilder.hostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
mOkHttpClient=ClientBuilder.build();
}
/**
* 单例模式获取NetUtils
* @return
*/
public static NetUtils getInstance() {
if (mInstance == null) {
synchronized (LOCKER) {
if (mInstance == null) {
mInstance = new NetUtils();
}
}
}
return mInstance;
}
/**
* get请求，同步方式，获取网络数据，是在主线程中执行的，需要新起线程，将其放到子线程中执行
* @param url
* @return
*/
public Response getDataSynFromNet(String url) {
//1 构造Request
Request.Builder builder = new Request.Builder();
Request request=builder.get().url(url).build();
//2 将Request封装为Call
Call call = mOkHttpClient.newCall(request);
//3 执行Call，得到response
Response response = null;
try {
response = call.execute();
} catch (IOException e) {
e.printStackTrace();
}
return response;
}
/**
* post请求，同步方式，提交数据，是在主线程中执行的，需要新起线程，将其放到子线程中执行
* @param url
* @param bodyParams
* @return
*/
public Response postDataSynToNet(String url,Map bodyParams) {
//1构造RequestBody
RequestBody body=setRequestBody(bodyParams);
//2 构造Request
Request.Builder requestBuilder = new Request.Builder();
Request request = requestBuilder.post(body).url(url).build();
//3 将Request封装为Call
Call call = mOkHttpClient.newCall(request);
//4 执行Call，得到response
Response response = null;
try {
response = call.execute();
} catch (IOException e) {
e.printStackTrace();
}
return response;
}
/**
* 自定义网络回调接口
*/
public interface MyNetCall{
void success(Call call, Response response) throws IOException;
void failed(Call call, IOException e);
}
/**
* get请求，异步方式，获取网络数据，是在子线程中执行的，需要切换到主线程才能更新UI
* @param url
* @param myNetCall
* @return
*/
public void getDataAsynFromNet(String url, final MyNetCall myNetCall) {
//1 构造Request
Request.Builder builder = new Request.Builder();
Request request=builder.get().url(url).build();
//2 将Request封装为Call
Call call = mOkHttpClient.newCall(request);
//3 执行Call
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
myNetCall.failed(call,e);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
myNetCall.success(call,response);
}
});
}
/**
* post请求，异步方式，提交数据，是在子线程中执行的，需要切换到主线程才能更新UI
* @param url
* @param bodyParams
* @param myNetCall
*/
public void postDataAsynToNet(String url, Map bodyParams, final MyNetCall myNetCall) {
//1构造RequestBody
RequestBody body=setRequestBody(bodyParams);
//2 构造Request
Request.Builder requestBuilder = new Request.Builder();
Request request = requestBuilder.post(body).url(url).build();
//3 将Request封装为Call
Call call = mOkHttpClient.newCall(request);
//4 执行Call
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
myNetCall.failed(call,e);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
myNetCall.success(call,response);
}
});
}
/**
* post的请求参数，构造RequestBody
* @param BodyParams
* @return
*/
private RequestBody setRequestBody(Map BodyParams){
RequestBody body=null;
okhttp3.FormBody.Builder formEncodingBuilder=new okhttp3.FormBody.Builder();
if(BodyParams != null){
Iterator iterator = BodyParams.keySet().iterator();
String key = "";
while (iterator.hasNext()) {
key = iterator.next().toString();
formEncodingBuilder.add(key, BodyParams.get(key));
Log.d("post http", "post_Params==="+key+"===="+BodyParams.get(key));
}
}
body=formEncodingBuilder.build();
return body;
}
/**
* 判断网络是否可用
* @param context
* @return
*/
public static boolean isNetworkAvailable(Context context) {
ConnectivityManager cm = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
if (cm == null) {
} else {
//如果仅仅是用来判断网络连接
//则可以使用cm.getActiveNetworkInfo().isAvailable();
NetworkInfo[] info = cm.getAllNetworkInfo();
if (info != null) {
for (int i = 0; i < info.length; i++) {
if (info[i].getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
}
}
return false;
}
/**
* 生成安全套接字工厂，用于https请求的证书跳过
* @return
*/
public SSLSocketFactory createSSLSocketFactory() {
SSLSocketFactory ssfFactory = null;
try {
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(null, new TrustManager[]{new TrustAllCerts()}, new SecureRandom());
ssfFactory = sc.getSocketFactory();
} catch (Exception e) {
}
return ssfFactory;
}
/**
* 用于信任所有证书
*/
class TrustAllCerts implements X509TrustManager {
@Override
public void checkClientTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {
}
@Override
public void checkServerTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {
}
@Override
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[0];
}
}
}
2. 用法举例
推荐使用异步请求，因为已经把网络请求自动放到子线程了，用起来稍简单。而同步请求还需要自己new Thread+handler来做，几乎和原始的网络请求没区别了。因此这里举例就只举异步请求了。
异步GET请求
点击按钮登录
public void login(View view) {
final String account = etAccount.getText().toString();
final String pass = etPassword.getText().toString();
if (account.isEmpty() || pass.isEmpty()) {
Toast.makeText(this, "用户名或密码不能为空！", Toast.LENGTH_SHORT).show();
return;
}
if(!Global.isNetAvailable)
{
Toast.makeText(this, "网络不可用！", Toast.LENGTH_SHORT).show();
return;
}
//进度条
loginProgress.setVisibility(View.VISIBLE);
//获取网络工具类实例
NetUtils netUtils = NetUtils.getInstance();
//请求网络，一句代码搞定
netUtils.getDataAsynFromNet(Global.LOGIN + "?username=" + account + "&password=" + pass,
new NetUtils.MyNetCall() {
@Override
public void success(Call call, Response response) throws IOException {
Log.i("tag", "success");
String result = response.body().string();
final ResponseBean responseBean = JSON.parseObject(result, ResponseBean.class);
if (responseBean != null) {
runOnUiThread(new Runnable() {
@Override
public void run() {
loginProgress.setVisibility(View.GONE);
String errcode = responseBean.getErrcode();
if (errcode.equals("0")) {//登录成功
//记录学号
Global.account = account;
//存储用户名密码
saveUserName(account, pass);
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
LoginActivity.this.finish();
} else {
Toast.makeText(LoginActivity.this, "请求失败！错误代码： " + errcode, Toast.LENGTH_SHORT).show();
}
}
});
}
}
@Override
public void failed(Call call, IOException e) {
Log.i("tag", "failed");
runOnUiThread(new Runnable() {
@Override
public void run() {
loginProgress.setVisibility(View.GONE);
Toast.makeText(LoginActivity.this, "请求失败！", Toast.LENGTH_SHORT).show();
}
});
}
}
);
}异步POST请求
点击按钮，提交数据
public void postSelect() {
//确保选择了楼号
if (tvTargetBuilding.getText().toString().isEmpty()) {
Toast.makeText(getActivity(),"请选择楼号！",Toast.LENGTH_SHORT).show();
return;
}
//构造请求参数
Map reqBody = new ConcurrentSkipListMap<>();
reqBody.put("num", "1");
reqBody.put("stuid", Global.account);
reqBody.put("buildingNo", selectBuilding + "");
//获取网络请求工具类实例
NetUtils netUtils = NetUtils.getInstance();
//提交数据
netUtils.postDataAsynToNet(Global.SELECT_ROOM, reqBody, new NetUtils.MyNetCall() {
@Override
public void success(Call call, Response response) throws IOException {
Log.i("tag", "success");
String result = response.body().string();
Log.i("tag", "result: " + result);
//解析数据
JSONObject jsonObject1 = JSON.parseObject(result);
if (jsonObject1 != null) {
final int error_code = jsonObject1.getIntValue("error_code");
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
Log.i("tag", "errcode: " + error_code);
if (error_code == 0) {//提交成功
Toast.makeText(getActivity(), "选择成功！", Toast.LENGTH_SHORT).show();
//跳转到selectSuccessfragment
MainActivity.mainActivityInstance.switchFragment(getParentFragment(),SelectSuccessFragment.newInstance("", ""));
} else {
Toast.makeText(getActivity(), "选择失败！错误代码： " + error_code, Toast.LENGTH_SHORT).show();
}
}
});
}
}
@Override
public void failed(Call call, IOException e) {
Log.i("tag", "failed");
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(getActivity(), "请求失败！", Toast.LENGTH_SHORT).show();
}
});
}
});
} 什么？还嫌代码太长？
其实很短的，除去注释和打印的日志以及一些不相干的部分（我这里的是一个实际的项目，所以涉及到一些其他的东西），你会发现代码很少，核心的代码就是一句。（这时候你可能要说，哼，是一句，但一句有十多行。。。拜托~不要那么懒啦好不好 -_-|||）
要注意的是获取数据后，更新UI要在主线程中。我这里使用的是runOnUiThread也可以用Handler。
用Handler后你会发现这一部分的代码很少了，因为只需要把获取的数据用Message发送到Handler处理就好了，这样就把代码分散开了
用runOnUiThread的好处是很直接，不过看起来代码都堆到一起，其实很方便的。
完结，撒花~