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安卓期末作业-文字识别
android app 端:
文字识别页面
网络请求
后端
Spring Boot
MySQL
项目结构简图
类代码
public class LoginActivity extends Activity { private Button btnLogin = null; private Button btnRegister = null; private EditText username = null; private EditText password = null; private ProgressDialog progressDialog; Handler handler = new Handler() { @Override public void handleMessage(Message msg) { super.handleMessage(msg); hideProgressDialog(); String usernameStr = username.getText().toString(); //将用户名称传入到下个页面,并且跳转 Bundle bundle = new Bundle(); bundle.putString("username", usernameStr); Intent intent = new Intent(getApplicationContext(), WordFindActivity.class); intent.putExtras(bundle); startActivity(intent); } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); btnLogin = findViewById(R.id.btn_login); btnRegister = findViewById(R.id.btn_register); username = findViewById(R.id.login_username); password = findViewById(R.id.login_password); btnLogin.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String usernameStr = username.getText().toString(); String passwordStr = password.getText().toString(); if (usernameStr.length() == 0) { Toast.makeText(getApplicationContext(), "请输入用户名", Toast.LENGTH_SHORT).show(); return; } if (passwordStr.length() == 0) { Toast.makeText(getApplicationContext(), "请输入密码", Toast.LENGTH_SHORT).show(); return; } showProgressDialog("登陆中", "请稍后"); new Thread(new Runnable() { @Override public void run() { OkHttpClient client = new OkHttpClient.Builder().readTimeout(5, TimeUnit.SECONDS).build(); Request request = new Request.Builder().url(UrlAddress.getUrl() + "getUserByName/" + usernameStr) .get().build(); Call call = client.newCall(request); try { Response response = call.execute(); String result = new String(response.body().bytes()); System.out.println("===========>登录查询结果" + result); //如果返回值为空,用户不存在 if (result.length() != 0) { User user = JsonUtils.jsonToPojo(result, User.class); //如果密码正确 if (user.getPassword().equals(passwordStr)) { handler.sendEmptyMessage(1); return; } else { //如果密码不正确 Looper.prepare(); hideProgressDialog(); Toast.makeText(getApplicationContext(), "密码不正确", Toast.LENGTH_SHORT).show(); Looper.loop(); } } else { //如果用户名不存在 Looper.prepare(); hideProgressDialog(); Toast.makeText(getApplicationContext(), "用户名不存在", Toast.LENGTH_SHORT).show(); Looper.loop(); } } catch (IOException e) { e.printStackTrace(); } } }).start(); } }); btnRegister.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(getApplicationContext(), RegisterActivity.class); startActivity(intent); } }); } /* * 提示加载 */ public void showProgressDialog(String title, String message) { if (progressDialog == null) { progressDialog = ProgressDialog.show(LoginActivity.this, title, message, true, false); } else if (progressDialog.isShowing()) { progressDialog.setTitle(title); progressDialog.setMessage(message); } progressDialog.show(); } /* * 隐藏提示加载 */ public void hideProgressDialog() { if (progressDialog != null && progressDialog.isShowing()) { progressDialog.dismiss(); } } }
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=".LoginActivity"> <!--app:srcCompat="@drawable/_11"--> <ImageView android:id="@+id/imageView" android:layout_width="216dp" android:layout_height="141dp" android:src="@drawable/icon" app:layout_constraintBottom_toTopOf="@+id/login_username" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.512" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="0.608" /> <EditText android:id="@+id/login_username" style="@style/Widget.AppCompat.AutoCompleteTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="52dp" android:ems="10" android:hint="请输入账号" android:inputType="textPersonName" android:minHeight="48dp" app:layout_constraintBottom_toTopOf="@+id/login_password" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.497" app:layout_constraintStart_toStartOf="parent" /> <EditText android:id="@+id/login_password" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="64dp" android:ems="10" android:hint="请输入密码" android:inputType="textPassword" android:minHeight="48dp" app:layout_constraintBottom_toTopOf="@+id/btn_login" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.497" app:layout_constraintStart_toStartOf="parent" tools:ignore="SpeakableTextPresentCheck" /> <Button android:id="@+id/btn_login" style="@style/Widget.AppCompat.Button.Colored" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="164dp" android:background="@drawable/shape_bt" android:text="登录" android:textColor="#000000" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.269" app:layout_constraintStart_toStartOf="parent" /> <Button android:id="@+id/btn_register" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="164dp" android:background="@drawable/shape_bt" android:text="注册" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.687" app:layout_constraintStart_toStartOf="parent" /> </androidx.constraintlayout.widget.ConstraintLayout>
类代码
public class RegisterActivity extends Activity { private ProgressDialog progressDialog; private Button btnBack = null; private Button btnRegisterEnd = null; private EditText username = null; private EditText password = null; private EditText phoneNum = null; Handler handler = new Handler() { @Override public void handleMessage(Message msg) { super.handleMessage(msg); hideProgressDialog(); Intent intent = new Intent(getApplicationContext(), LoginActivity.class); startActivity(intent); } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_register); btnBack = findViewById(R.id.back); btnRegisterEnd = findViewById(R.id.btn_register_end); username = findViewById(R.id.register_username); password = findViewById(R.id.register_password); phoneNum = findViewById(R.id.register_phone_num); btnBack.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(getApplicationContext(), LoginActivity.class); startActivity(intent); } }); btnRegisterEnd.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String usernameStr = username.getText().toString(); String passwordStr = password.getText().toString(); String phoneNumStr = phoneNum.getText().toString(); if (usernameStr.length() == 0) { Toast.makeText(getApplicationContext(), "用户名不能为空", Toast.LENGTH_SHORT).show(); return; } if (passwordStr.length() == 0) { Toast.makeText(getApplicationContext(), "密码不能为空", Toast.LENGTH_SHORT).show(); return; } if (phoneNumStr.length() == 0) { Toast.makeText(getApplicationContext(), "手机号不能为空", Toast.LENGTH_SHORT).show(); return; } showProgressDialog("请稍后", "提交中"); new Thread(new Runnable() { @Override public void run() { OkHttpClient client = new OkHttpClient.Builder().readTimeout(5, TimeUnit.SECONDS).build(); Request request = new Request.Builder().url(UrlAddress.getUrl() + "getUserByName/" + usernameStr) .get().build(); Call call = client.newCall(request); try { Response response = call.execute(); String result = new String(response.body().bytes()); System.out.println("============>" + result); System.out.println("======" + result.length()); System.out.println("======" + result == null); //判断是否已经注册 if (result.length() != 0) { Looper.prepare(); Toast.makeText(getApplicationContext(), "用户名已经注册!", Toast.LENGTH_SHORT).show(); hideProgressDialog(); Looper.loop(); return; } //网络请求发送到数据库 //将结果存储到数据库 OkHttpClient okHttpClient = new OkHttpClient(); RequestBody requestBody = new FormBody.Builder() .build(); System.out.println("======================>" + "注册post: http://192.168.1.107/addUser/" + usernameStr + "/" + passwordStr + "/" + phoneNumStr); Request request2 = new Request.Builder() .url(UrlAddress.getUrl() + "addUser/" + usernameStr + "/" + passwordStr + "/" + phoneNumStr) .post(requestBody) .build(); okHttpClient.newCall(request2).enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { System.out.println("===================>" + "注册post失败"); } @Override public void onResponse(Call call, Response response) throws IOException { System.out.println("===================>" + "注册post成功"); System.out.println(response.protocol() + " " + response.code() + " " + response.message()); Headers headers = response.headers(); for (int i = 0; i < headers.size(); i++) { System.out.println(headers.name(i) + ":" + headers.value(i));; } System.out.println("onResponse: " + response.body().string()); handler.sendEmptyMessage(1); } }); } catch (IOException e) { e.printStackTrace(); } } }).start(); } }); } /* * 提示加载 */ public void showProgressDialog(String title, String message) { if (progressDialog == null) { progressDialog = ProgressDialog.show(RegisterActivity.this, title, message, true, false); } else if (progressDialog.isShowing()) { progressDialog.setTitle(title); progressDialog.setMessage(message); } progressDialog.show(); } /* * 隐藏提示加载 */ public void hideProgressDialog() { if (progressDialog != null && progressDialog.isShowing()) { progressDialog.dismiss(); } } }
布局页面
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#ededed" android:orientation="vertical"> <RelativeLayout android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" android:background="#ffffff"> <Button android:id="@+id/back" style="@style/Widget.AppCompat.Button.Small" android:layout_width="76dp" android:layout_height="wrap_content" android:text="返回" /> </RelativeLayout> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="15dp" android:layout_marginTop="24dp" android:layout_marginBottom="5dp" android:text="请输入用户名" android:textColor="#808080" /> <LinearLayout android:layout_width="match_parent" android:layout_height="40dp" android:background="#ffffff" android:orientation="horizontal"> <TextView android:layout_width="64dp" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginLeft="5dp" android:text="用户名" android:textColor="#000000" /> <EditText android:id="@+id/register_username" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginLeft="48dp" android:background="@drawable/number_shape" android:hint="输入您的用户名" android:paddingLeft="16dp" android:textSize="16sp" tools:ignore="TouchTargetSizeCheck" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="40dp" android:background="#ffffff" android:orientation="horizontal"> <TextView android:layout_width="64dp" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginLeft="5dp" android:text="密码" android:textColor="#000000" /> <EditText android:id="@+id/register_password" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginLeft="48dp" android:background="@drawable/number_shape" android:hint="输入您的密码" android:paddingLeft="16dp" android:textSize="16sp" tools:ignore="TouchTargetSizeCheck" /> </LinearLayout> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:layout_marginTop="24dp" android:layout_marginRight="5dp" android:layout_marginBottom="5dp" android:text="绑定您的手机" android:textColor="#808080" /> <LinearLayout android:layout_width="match_parent" android:layout_height="40dp" android:background="#ffffff" android:orientation="horizontal"> <TextView android:layout_width="64dp" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginLeft="5dp" android:text="手机号" android:textColor="#000000" /> <EditText android:id="@+id/register_phone_num" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginLeft="48dp" android:background="@drawable/number_shape" android:hint="请输入您的手机号" android:paddingLeft="16dp" android:textSize="16sp" tools:ignore="TouchTargetSizeCheck" /> </LinearLayout> <Button android:id="@+id/btn_register_end" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:layout_marginTop="48dp" android:layout_marginRight="5dp" android:background="@drawable/shape_bt" android:text="注册" android:textSize="16sp" /> </LinearLayout>
类代码
public class WordFindActivity extends Activity { private static int RESULT_LOAD_IMAGE = 10; private static final int PERMISSION_REQUEST = 1001; String[] permissions = {Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.CAMERA,Manifest.permission.CALL_PHONE,Manifest.permission.READ_EXTERNAL_STORAGE}; private ProgressDialog progressDialog; List<String> permissionsList = new ArrayList<>(); static Bitmap resBitMap; EditText showImgText = null; static User user = new User(); static List<String> textCoures = new ArrayList<>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_word_find); Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadPicture); //为按钮设置点击事件 buttonLoadImage.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View arg0) { //点击事件,而重定向到图片库 Intent intent = new Intent( Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); //这里要传一个整形的常量RESULT_LOAD_IMAGE到startActivityForResult()方法。 startActivityForResult(intent, RESULT_LOAD_IMAGE); } }); Button buttonShowText = (Button) findViewById(R.id.showText); buttonShowText.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent( getApplicationContext(), ImgTextListActivity.class); //如果识别记录不为空或者长度为0,就加入到记录中 if (showImgText != null) { String str = showImgText.getText().toString(); if (str.length() > 0) { //网络请求发送到数据库 //将识别结果存入数据库 OkHttpClient okHttpClient = new OkHttpClient(); RequestBody requestBody = new FormBody.Builder() .build(); System.out.println("======================>" + "http://192.168.1.107/addInfoRecord/" + user.getName() + "/" + str); Request request = new Request.Builder() .url(UrlAddress.getUrl() + "addInfoRecord/" + user.getName() + "/" + str) .post(requestBody) .build(); okHttpClient.newCall(request).enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { System.out.println("===================>" + "post失败"); } @Override public void onResponse(Call call, Response response) throws IOException { System.out.println("===================>" + "post成功"); System.out.println(response.protocol() + " " + response.code() + " " + response.message()); Headers headers = response.headers(); for (int i = 0; i < headers.size(); i++) { System.out.println(headers.name(i) + ":" + headers.value(i));; } System.out.println("onResponse: " + response.body().string()); } }); } //添加数据 //intent.putStringArrayListExtra("records", (ArrayList<String>) textCoures); } Bundle bundle = new Bundle(); bundle.putString("username", user.getName()); intent.putExtras(bundle); //跳转到记录list startActivity(intent); } }); initPermissions(); } @Override protected void onStart() { super.onStart(); // 将用户信息更新 Bundle extras= getIntent().getExtras(); if (extras != null && extras.getString("username") != null) { user.setName(extras.getString("username")); } //user.setName("张三"); } /** * 请求权限 */ private void initPermissions() { permissionsList.clear(); //判断哪些权限未授予 for(String permission : permissions){ if(ActivityCompat.checkSelfPermission(this,permission)!= PackageManager.PERMISSION_GRANTED){ permissionsList.add(permission); } } //请求权限 if(!permissionsList.isEmpty()){ String[] permissions = permissionsList.toArray(new String[permissionsList.size()]);//将List转为数组 ActivityCompat.requestPermissions(WordFindActivity.this, permissions, PERMISSION_REQUEST); } } //用户选择一张图片,onActivityResult()方法将会被调用, @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); showImgText = null; //我们需要判断requestCode是否是我们之前传给startActivityForResult()方法的RESULT_LOAD_IMAGE,并且返回的数据不能为空 if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) { Uri selectedImage = data.getData(); String[] filePathColumn = { MediaStore.Images.Media.DATA }; //查询我们需要的数据 Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null); cursor.moveToFirst(); int columnIndex = cursor.getColumnIndex(filePathColumn[0]); String picturePath = cursor.getString(columnIndex); cursor.close(); ImageView imageView = (ImageView) findViewById(R.id.imgView); showImgText = (EditText) findViewById(R.id.showImgText); resBitMap = BitmapFactory.decodeFile(picturePath); imageView.setImageBitmap(resBitMap); System.out.println("======================================================="); } //等待识别消息框 showProgressDialog("识别中", "请等待"); EditText wordText = showImgText; new Thread(new Runnable() { @Override public void run() { String json = generalBasic(); RecognitionResultBean bean = JsonUtils.jsonToPojo(json, RecognitionResultBean.class); String str = ""; for (RecognitionResultBean.WordsResultBean resultBean : bean.getWords_result()) { str += resultBean.getWords(); }; System.out.println(str); Looper.prepare(); if (wordText != null) { wordText.setText(str); //隐藏等待框 hideProgressDialog(); } Looper.loop(); } }).start(); } public String generalBasic() { // 请求url String url = "https://aip.baidubce.com/rest/2.0/ocr/v1/accurate_basic"; try { // 本地文件路径 //System.out.println("------" + System.getProperty("user.dir")); //String filePath = "app/1.png"; String base64Img = getImgBase64(resBitMap); String imgParam = URLEncoder.encode(base64Img, "UTF-8"); String param = "image=" + imgParam; /*System.out.println("=================>>>>>" + param);*/ // 注意这里仅为了简化编码每一次请求都去获取access_token,线上环境access_token有过期时间, 客户端可自行缓存,过期后重新获取。 String accessToken = AuthService.getAuth(); String result = HttpUtil.post(url, accessToken, param); //System.out.println(result); return result; } catch (Exception e) { e.printStackTrace(); } return null; } public String getImgBase64(Bitmap bitmap) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos); byte[] imgData = baos.toByteArray(); String imgStr = Base64Util.encode(imgData); return imgStr; } /* * 提示加载 */ public void showProgressDialog(String title, String message) { if (progressDialog == null) { progressDialog = ProgressDialog.show(WordFindActivity.this, title, message, true, false); } else if (progressDialog.isShowing()) { progressDialog.setTitle(title); progressDialog.setMessage(message); } progressDialog.show(); } /* * 隐藏提示加载 */ public void hideProgressDialog() { if (progressDialog != null && progressDialog.isShowing()) { progressDialog.dismiss(); } } }
布局页面
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <ImageView android:id="@+id/imgView" android:layout_width="match_parent" android:layout_height="250dp" android:layout_weight="1" /> <EditText android:id="@+id/showImgText" android:layout_width="match_parent" android:layout_height="250dp" android:editable="false" tools:ignore="SpeakableTextPresentCheck" /> <LinearLayout android:layout_width="match_parent" android:layout_height="130dp" android:orientation="horizontal"> <Button android:id="@+id/buttonLoadPicture" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginLeft="85dp" android:layout_weight="0" android:text="选择图片" android:background="@drawable/shape_bt"/> <Button android:id="@+id/showText" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginLeft="40dp" android:layout_weight="0" android:background="@drawable/shape_bt" android:text="查看记录" /> </LinearLayout> </LinearLayout>
类代码
public class ImgTextListActivity extends Activity { static ListView textInfo; static List<String> textCoures = new ArrayList<>(); static User user = new User(); Handler handler = new Handler() { @Override public void handleMessage(Message msg) { super.handleMessage(msg); ArrayAdapter<String> adapter = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1, textCoures); textInfo.setAdapter(adapter); } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_img_text_list); textInfo = (ListView) findViewById(R.id.textInfoList); } @Override protected void onStart() { super.onStart(); //获取user的数据集合 // 将用户信息更新 Bundle extras= getIntent().getExtras(); if (extras != null) { String username = extras.getString("username"); if (username != null) { user.setName(username); } } boolean flag = true; new Thread(new Runnable() { @Override public void run() { OkHttpClient client = new OkHttpClient.Builder().readTimeout(5, TimeUnit.SECONDS).build(); Request request = new Request.Builder().url(UrlAddress.getUrl() + "getInfoRecordsByName/" + user.getName()) .get().build(); Call call = client.newCall(request); try { Response response = call.execute(); System.out.println("============>" + "请求成功"); String responseStr = new String(response.body().bytes()); System.out.println(responseStr); List<InfoRecord> infoRecord = JsonUtils.jsonToList(responseStr, InfoRecord.class); //将record转为字符串 RecordList recordList = new RecordList(infoRecord); textCoures = recordList.getString(); handler.sendEmptyMessage(1); } catch (IOException e) { e.printStackTrace(); } } }).start(); } }
布局文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context=".ImgTextListActivity">
<ListView
android:id="@+id/textInfoList"
android:layout_width="409dp"
android:layout_height="729dp"
tools:layout_editor_absoluteX="1dp"
tools:layout_editor_absoluteY="1dp" />
</LinearLayout>
在百度开放平台中选中图像识别,找到文字识别,然后创建应用,这是一个收费项目,但每天都有免费的次数。
要使用这个功能必须先要鉴权,需要用到一些Java的工具类,请在官方下载,详情官方文档
百度开放平台:http://ai.baidu.com
controller代码
@RestController public class InfoRecordController { @Autowired InfoRecordRepository infoRecordRepository; @GetMapping("/getInfoRecordsByName/{username}") public List<InfoRecord> getInfoRecordsByUsername(@PathVariable("username") String username) { return infoRecordRepository.getInfoRecordsByUsername(username); } @PostMapping("/addInfoRecord/{username}/{record}") public Msg addInfoRecord(@PathVariable("username") String name, @PathVariable("record") String record) { infoRecordRepository.save(new InfoRecord(name, record)); return Msg.setCode("success"); } }
@RestController public class UserController { @Autowired UserRepository userRepository; @Autowired InfoRecordRepository infoRecordRepository; /*@GetMapping("/getUser/{username}") public Optional<User> getUserPwd(@PathVariable("username") Integer username) { return userRepository.findById(username); }*/ //根据名字查询 @GetMapping("/getUserByName/{username}") public User getUserByName(@PathVariable("username") String username) { return userRepository.findByName(username); } @PostMapping("/addUser/{name}/{password}/{phoneNum}") public Msg addUser(@PathVariable("name") String name, @PathVariable("password") String password, @PathVariable("phoneNum") String phoneNum) { if (userRepository.findByName(name) != null) { return Msg.setCode("failed"); } userRepository.save(new User(name, password, phoneNum)); return Msg.setCode("success"); } }
实体类映射
@Entity @Data public class InfoRecord { @Id @GeneratedValue (strategy = GenerationType.IDENTITY) // 设置mysql id自增 private Integer id; private String username; private String record; public InfoRecord() { } public InfoRecord(String username, String record) { this.username = username; this.record = record; } }
@Entity @Data public class User { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) // 设置mysql id自增 private Integer id; private String name; private String password; private String phoneNum; public User() { } public User (String name, String password, String phoneNum) { this.name = name; this.password = password; this.phoneNum = phoneNum; } }
用于标识请求成功或者失败的工具类
@Data public class Msg { private String code; private Msg(String code) { this.code = code; } public static Msg setCode(String code) { return new Msg(code); } @Override public String toString() { return "Msg{" + "code='" + code + '\'' + '}'; } }
Repository接口继承
public interface UserRepository extends JpaRepository<User, Integer> {
User findByName(String name);
}
public interface InfoRecordRepository extends JpaRepository<InfoRecord, Integer> {
List<InfoRecord> getInfoRecordsByUsername(String username);
}
User表
name属性设置为唯一,用户不能重名
Info_record表
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