Android使用OKhttp3实现登录注册功能+springboot搭建后端
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这篇教程主要实现android使用OKhttp3实现登录注册的功能，后端使用SSM框架。
一、Android前端实现
新建一个login的项目，主要的几个文件在这里
1、gradle引入OKhttp3依赖
implementation 'com.squareup.okhttp3:okhttp:3.14.7'
implementation 'com.squareup.okio:okio:1.17.5'
2、activity_main.xml布局文件
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<EditText
android:id="@+id/username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="用户名"
android:textSize="34sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.051" />
<EditText
android:id="@+id/password"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="密码"
android:textSize="34sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/username"
app:layout_constraintVertical_bias="0.067" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="register"
android:text="注册"
android:textSize="24sp"
app:backgroundTint="#E91E63"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/password"
app:layout_constraintVertical_bias="0.058" />
<Button
android:id="@+id/getUser"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="getUser"
android:text="获取"
android:textSize="24sp"
app:backgroundTint="#E91E63"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button3"
app:layout_constraintVertical_bias="0.174" />
<Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="登录"
android:textSize="24sp"
app:backgroundTint="#E91E63"
android:onClick="login"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button"
app:layout_constraintVertical_bias="0.113" />
</androidx.constraintlayout.widget.ConstraintLayout>
3、AndroidManifest.xml配置文件
这里需要加上网络请求权限，添加网络权限的时候注意：在res目录下新建xml目录，创建network_security_config.xml文件
<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
<base-config cleartextTrafficPermitted="true" />
</network-security-config>
并在配置文件中加入这行代码：
android:networkSecurityConfig="@xml/network_security_config"
完整的AndroidManifest.xml文件如下
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.login">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:networkSecurityConfig="@xml/network_security_config"
android:supportsRtl="true"
android:theme="@style/Theme.Login">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
4、创建User实体类
新建entity目录创建User实体类。注意这里我是根据后端数据库的字段创建的，在实现登录注册的时候只需要id,username,password 几个基础的字段就行，这里我比较多，读者可以自行忽略。
User.java
package com.example.login.entity;
public class User {
private Integer userId;
private String userName;
private String userPassword;
private String currentVersion;
private String latestVersion;
private String updateDescription;
private String headPortrait;
private String nickName;
private String vipTime;
private String userCategory;
private String registerDate;
public User(Integer userId, String userName, String userPassword, String currentVersion, String latestVersion, String updateDescription, String headPortrait, String nickName, String vipTime, String userCategory, String registerDate) {
this.userId = userId;
this.userName = userName;
this.userPassword = userPassword;
this.currentVersion = currentVersion;
this.latestVersion = latestVersion;
this.updateDescription = updateDescription;
this.headPortrait = headPortrait;
this.nickName = nickName;
this.vipTime = vipTime;
this.userCategory = userCategory;
this.registerDate = registerDate;
}
public User() {
}
public Integer getUserId() {
return userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserPassword() {
return userPassword;
}
public void setUserPassword(String userPassword) {
this.userPassword = userPassword;
}
public String getCurrentVersion() {
return currentVersion;
}
public void setCurrentVersion(String currentVersion) {
this.currentVersion = currentVersion;
}
public String getLatestVersion() {
return latestVersion;
}
public void setLatestVersion(String latestVersion) {
this.latestVersion = latestVersion;
}
public String getUpdateDescription() {
return updateDescription;
}
public void setUpdateDescription(String updateDescription) {
this.updateDescription = updateDescription;
}
public String getHeadPortrait() {
return headPortrait;
}
public void setHeadPortrait(String headPortrait) {
this.headPortrait = headPortrait;
}
public String getNickName() {
return nickName;
}
public void setNickName(String nickName) {
this.nickName = nickName;
}
public String getVipTime() {
return vipTime;
}
public void setVipTime(String vipTime) {
this.vipTime = vipTime;
}
public String getUserCategory() {
return userCategory;
}
public void setUserCategory(String userCategory) {
this.userCategory = userCategory;
}
public String getRegisterDate() {
return registerDate;
}
public void setRegisterDate(String registerDate) {
this.registerDate = registerDate;
}
}
5、MainActivity.java
package com.example.login;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.example.login.entity.User;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
public class MainActivity extends AppCompatActivity {
private EditText username;
private EditText password;
private User user;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
username = findViewById(R.id.username);
password = findViewById(R.id.password);
}
public void register(View view) {
user = new User();
user.setUserName(username.getText().toString());
user.setUserPassword(password.getText().toString());
Log.d("whqusername",username.getText().toString());
Log.d("whqpassword",password.getText().toString());
new Thread(new Runnable() {
@Override
public void run() {
MediaType JSON = MediaType.parse("application/json;charset=utf-8");
JSONObject jsonObject = new JSONObject();
OkHttpClient httpClient = new OkHttpClient();
try {
jsonObject.put("userId",10);
jsonObject.put("userName",user.getUserName());
jsonObject.put("userPassword",user.getUserPassword());
jsonObject.put("currentVersion",null);
jsonObject.put("latestVersion",null);
jsonObject.put("updateDescription",null);
jsonObject.put("headPortrait",null);
jsonObject.put("nickName",user.getUserName());
jsonObject.put("vipTime",null);
jsonObject.put("userCategory",null);
jsonObject.put("registerDate",null);
} catch (JSONException e) {
e.printStackTrace();
}
RequestBody requestBody = RequestBody.create(JSON, String.valueOf(jsonObject));
String url = "http://ip:8001/server/user/addUser/";
Request request = new Request.Builder()
.url(url)
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