Android 实现登录功能

缺乏、安全感 2023-09-27 12:34 62阅读 0赞

![457fdef5e0774e56b24e2a64fa599ea8.png][]

Android 使用 okhttp 网络框架，实现登录功能，

Header请求头带 Token 账号密码以Json格式传给后台，

登录成功后保存 Token 本地保存账号密码

![542747262c1a4b8f88eeb3c8a104f2de.png][]

![3740c8b9d7bd42bfb3bef6f7a48ce598.png][]

#### 依赖： ####

dependencies {
    
        // okhttp
        implementation 'net.qiujuer.common:okhttp:3.0.0'
        implementation 'com.squareup.okhttp3:logging-interceptor:3.4.2'
    
        // gson
        implementation 'com.google.code.gson:gson:2.8.2'
    
        //圆形图片依赖：（一般和glide一起用）：
        implementation 'de.hdodenhof:circleimageview:2.2.0'
        //图片依赖比imagerloader更方便：
        implementation 'com.github.bumptech.glide:glide:3.7.0'
    
    }

#### 主页面布局： ####

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout 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"
        android:background="@drawable/img_android01"
        android:orientation="vertical"
        android:paddingHorizontal="12dp"
        tools:context=".LogonActivity">
    
        <EditText
            android:id="@+id/name"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="150dp"
            android:hint="请输入手机号"
            android:padding="12dp" />
    
        <EditText
            android:id="@+id/password"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="12dp"
            android:hint="请输入密码"
            android:padding="12dp" />
    
        
        
        <CheckBox
            android:id="@+id/logon_recall"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:buttonTint="#ffffff"
            android:text="记住密码" />
    
        <Button
            android:id="@+id/btn_login"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginHorizontal="30dp"
            android:layout_marginTop="24dp"
            android:background="#ffffff"
            android:text="登 录"
            android:textColor="#000000" />
        
        
        
        
        
    
    
    </LinearLayout>

#### 主页面： ####

package com.ksxy.ksxytake;
    
    import android.content.Intent;
    import android.content.SharedPreferences;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.View;
    import android.widget.Button;
    import android.widget.CheckBox;
    import android.widget.EditText;
    import android.widget.Toast;
    
    import androidx.appcompat.app.AppCompatActivity;
    
    import com.google.gson.Gson;
    
    import org.json.JSONException;
    import org.json.JSONObject;
    
    import java.io.IOException;
    import java.io.InputStream;
    
    import okhttp3.Call;
    import okhttp3.Callback;
    import okhttp3.MediaType;
    import okhttp3.OkHttpClient;
    import okhttp3.Request;
    import okhttp3.RequestBody;
    import okhttp3.Response;
    
    /**
     * 登录页面
     */
    public class LogonActivity extends AppCompatActivity {
        private String loginUrl = "http://192.168.3.243:8080/auth/login";
    
        private EditText edit_name, edit_psd;//用户名和密码的文本输入框
        private CheckBox checkBox;//是否保存密码的选择框
        private Button btn;//登录按钮
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_logon);
    
            initView(); // 初始化数据
    
        }
    
    
        /**
         * 初始化数据
         */
        private void initView() {
            checkBox = (CheckBox) findViewById(R.id.logon_recall); // 记住密码选择框
            edit_name = (EditText) findViewById(R.id.name);
            edit_psd = (EditText) findViewById(R.id.password);
            btn = (Button) findViewById(R.id.btn_login);
    
            output(); // 刚进入就先取一次，看看当然状态
    
            btn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
    
                    String mobile = edit_name.getText().toString().trim();
                    String password = edit_psd.getText().toString().trim();
    
                    // 输入框判空
                    if (mobile.isEmpty() || password.isEmpty()) {
                        Toast.makeText(LogonActivity.this, "用户名/密码不能为空", Toast.LENGTH_SHORT).show();
                    } else {
                        login(mobile, password);
                    }
    
                }
            });
        }
    
    
        /**
         * 登录
         *
         * @param mobile
         * @param password
         */
        private void login(String mobile, String password) {
    
            // 账号密码转为Json格式传给后台
            MediaType JSON = MediaType.parse("application/json; charset=utf-8");
            // 将要传的参数保存进Json对象
            JSONObject jsJson = new JSONObject();
            try {
                jsJson.put("username", mobile);
                jsJson.put("password", password);
            } catch (JSONException e) {
                e.printStackTrace();
            }
            Log.d("111111 jsJson ====", ":" + jsJson);
    
            // 1 . 拿到OkHttpClient对象
            OkHttpClient client = new OkHttpClient();
            // 创建一个RequestBody(参数1：数据类型 参数2传递的json串)
            RequestBody requestBody = RequestBody.create(JSON, String.valueOf(jsJson));
    
            // 3 . 构建Request,将FormBody作为Post方法的参数传入
            Request request = new Request.Builder()
                    .url(loginUrl)
    //                .addHeader("Token", "eyJhbGciOiJIUzUxMiJ9.eyJ1c2VyX2lkIjoxLCJ1c2VyX2tleSI6IjQzM2Y3ZWE4LTZiMDctNGRjNy04ODYzLTE4OTgxNDgxOGY2NCIsInVzZXJuYW1lIjoiYWRtaW4ifQ.rPkJDV85kZ44c7-WzH-1Ncsd2_WIQgfbh7QmUNJ6hH2DzKr4GZ6PICgLJhPzVbYdONy5xubsNv2QXLXcIaU4hg")
                    .addHeader("Authorization", "Bearer eyJhbGciOiJIUzUxMiJ9.eyJ1c2VyX2lkIjoxLCJ1c2VyX2tleSI6IjQzM2Y3ZWE4LTZiMDctNGRjNy04ODYzLTE4OTgxNDgxOGY2NCIsInVzZXJuYW1lIjoiYWRtaW4ifQ.rPkJDV85kZ44c7-WzH-1Ncsd2_WIQgfbh7QmUNJ6hH2DzKr4GZ6PICgLJhPzVbYdONy5xubsNv2QXLXcIaU4hg")
    //                .addHeader("Content-Type", "application/json;charset=UTF-8")
                    .post(requestBody)
                    .build();
    
            client.newCall(request).enqueue(new Callback() {
                @Override
                public void onFailure(Call call, IOException e) {
                    Log.d("111111 post 请求失败 ======", "e.getMessage()" + e.getMessage());
                    Log.d("111111 post 请求失败 ======", "e.request()" + call.request());
                }
    
                @Override
                public void onResponse(Call call, Response response) throws IOException {
                    // 请求成功返回结果
                    // 如果希望返回的是字符串
                    final String responseData = response.body().string();
                    // 如果希望返回的是inputStream,有inputStream我们就可以通过IO的方式写文件.
                    InputStream responseStream = response.body().byteStream();
                    // 注意，此时的线程不是ui线程，
                    // 如果此时我们要用返回的数据进行ui更新，操作控件，就要使用相关方法
    
                    Log.d("111111 post 请求成功 ===", "responseData >>" + responseData);
                    Log.d("111111 post 请求成功 ===", "responseStream >>" + responseStream);
    
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            LogonBean bean = new Gson().fromJson(responseData, LogonBean.class);
                            Log.d("111111post请求成功======", "getAccess_token" + bean.getData().getAccess_token());
    
                            // 存Token
                            SharedPreferences sharedPreferences = getSharedPreferences("logonsp", MODE_PRIVATE);
                            SharedPreferences.Editor editor = sharedPreferences.edit();
                            editor.putString("token", bean.getData().getAccess_token());
                            editor.commit();
    
    //                        // 取 Token
    //                        SharedPreferences sharedPreferences = getSharedPreferences("logonsp", MODE_PRIVATE);
    //                        Log.d("111111 MainActivity >>", "getAccess_token:" + sharedPreferences.getString("token", ""));
    
                            input();
    
                            // Intent 去设置要跳转的页面
                            Intent intent = new Intent(LogonActivity.this, MainActivity.class);
                            // 进行跳转
                            startActivity(intent);
    
                            finish();
                        }
                    });
    
                }
            });
    
        }
    
    
        /**
         * 取出缓存的账号密码
         */
        private void output() {
            // 第一个参数是文件名，第二个参数是模式（不明白可以去补习一下SharedPreferences的知识）
            SharedPreferences shared = getSharedPreferences("mypsd", MODE_PRIVATE);
            // 第一个参数就是关键字，第二个参数为默认值，意思是说如果没找到值就用默认值代替
            String name1 = shared.getString("name", "");//同上，若没找到就让它为空""
            String psd1 = shared.getString("psd", "");
            boolean ischecked1 = shared.getBoolean("isChecked", false);
            edit_name.setText(name1);
            edit_psd.setText(psd1);
            checkBox.setChecked(ischecked1);
        }
    
        /**
         * 存到SD卡，判断选中获取缓存账号密码
         */
        private void input() {
    
            // 第一个参数是文件名，第二个参数是模式（不明白可以去补习一下SharedPreferences的知识）
            SharedPreferences.Editor edit = getSharedPreferences("mypsd", MODE_PRIVATE).edit();
            // 判断选择框的状态   被选中isChecked或……
            if (checkBox.isChecked()) {
                edit.putString("name", edit_name.getText().toString());
                edit.putString("psd", edit_psd.getText().toString());
                edit.putBoolean("isChecked", true);
            } else {
                // edit.clear(); // 若选择全部清除就保留这行代码，注释以下三行
                edit.putString("name", edit_name.getText().toString());//只存用户名
                edit.putString("psd", "");
                edit.putBoolean("isChecked", false);
            }
            edit.commit();
        }
    
    
    }

#### 主页面Bean类： ####

package com.ksxy.ksxytake;
    
    public class LogonBean {
    
    
        /**
         * code : 200
         * msg : null
         * data : {"access_token":"eyJhbGciOiJIUzUxMiJ9.eyJ1c2VyX2lkIjoxLCJ1c2VyX2tleSI6Ijc1OGMwNDkxLTRhOTMtNGZlMS05MDkyLWVkY2ZiODc4NGFiZCIsInVzZXJuYW1lIjoiYWRtaW4ifQ.TltWdsgL2vj4zfLgMZqmnoxqzVtKIOdV12ECHdtsI0ODj5mi1kCF-hpjAHcybfU6761-P31DyBENV2OcCGY8NQ","expires_in":720}
         */
    
        private int code;
        private Object msg;
        private DataBean data;
    
        public int getCode() {
            return code;
        }
    
        public void setCode(int code) {
            this.code = code;
        }
    
        public Object getMsg() {
            return msg;
        }
    
        public void setMsg(Object msg) {
            this.msg = msg;
        }
    
        public DataBean getData() {
            return data;
        }
    
        public void setData(DataBean data) {
            this.data = data;
        }
    
        public static class DataBean {
            /**
             * access_token : eyJhbGciOiJIUzUxMiJ9.eyJ1c2VyX2lkIjoxLCJ1c2VyX2tleSI6Ijc1OGMwNDkxLTRhOTMtNGZlMS05MDkyLWVkY2ZiODc4NGFiZCIsInVzZXJuYW1lIjoiYWRtaW4ifQ.TltWdsgL2vj4zfLgMZqmnoxqzVtKIOdV12ECHdtsI0ODj5mi1kCF-hpjAHcybfU6761-P31DyBENV2OcCGY8NQ
             * expires_in : 720
             */
    
            private String access_token;
            private int expires_in;
    
            public String getAccess_token() {
                return access_token;
            }
    
            public void setAccess_token(String access_token) {
                this.access_token = access_token;
            }
    
            public int getExpires_in() {
                return expires_in;
            }
    
            public void setExpires_in(int expires_in) {
                this.expires_in = expires_in;
            }
        }
    }

。。。

[457fdef5e0774e56b24e2a64fa599ea8.png]: https://img-blog.csdnimg.cn/457fdef5e0774e56b24e2a64fa599ea8.png
[542747262c1a4b8f88eeb3c8a104f2de.png]: https://img-blog.csdnimg.cn/542747262c1a4b8f88eeb3c8a104f2de.png
[3740c8b9d7bd42bfb3bef6f7a48ce598.png]: https://img-blog.csdnimg.cn/3740c8b9d7bd42bfb3bef6f7a48ce598.png