基于springboot1.5.4集成jpa+hibernate+jdbcTemplate(詳解)

1.pom添加依賴

創(chuàng)新互聯(lián)公司長(zhǎng)期為成百上千客戶提供的網(wǎng)站建設(shè)服務(wù)，團(tuán)隊(duì)從業(yè)經(jīng)驗(yàn)10年，關(guān)注不同地域、不同群體，并針對(duì)不同對(duì)象提供差異化的產(chǎn)品和服務(wù)；打造開放共贏平臺(tái)，與合作伙伴共同營(yíng)造健康的互聯(lián)網(wǎng)生態(tài)環(huán)境。為石鼓企業(yè)提供專業(yè)的成都做網(wǎng)站、網(wǎng)站制作，石鼓網(wǎng)站改版等技術(shù)服務(wù)。擁有十載豐富建站經(jīng)驗(yàn)和眾多成功案例,為您定制開發(fā)。

<!-- spring data jpa,會(huì)注入tomcat jdbc pool/hibernate等 -->
　　　　 <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
      <groupId>MySQL</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.42</version>
    </dependency>

2.添加數(shù)據(jù)源配置（DataSource啥的，一系列對(duì)象spring boot 都會(huì)給你注入的，配置配置即可！）

spring.datasource.url=jdbc:mysql://localhost/test?characterEncoding=utf8&useSSL=true
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

#database pool config
# Number of ms to wait before throwing an exception if no connection is available.
spring.datasource.tomcat.max-wait=10000
# Maximum number of active connections that can be allocated from this pool at the same time.
spring.datasource.tomcat.max-active=300
# Validate the connection before borrowing it from the pool.
spring.datasource.tomcat.test-on-borrow=true
# initial pool size
spring.datasource.tomcat.initial-size=20


#=====================jpa config================================
#實(shí)體類維護(hù)數(shù)據(jù)庫(kù)表結(jié)構(gòu)的具體行為：update/create/create-drop/validate/none
spring.jpa.hibernate.ddl-auto=none
#打印sql語句
spring.jpa.show-sql=true
#格式化輸出的json字符串
spring.jackson.serialization.indent_output=true

3.新建實(shí)體

@Entity
@Table(name="user")
public class User {

  @Id
  @Column(name="id")
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private Integer id;

  @Column(name="number")
  private String number;

  @Column(name="name")
  private String name;

  public Integer getId() {
    return id;
  }

  public void setId(Integer id) {
    this.id = id;
  }

  public String getNumber() {
    return number;
  }

  public void setNumber(String number) {
    this.number = number;
  }

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }
}

4.dao層

public interface UserDao{

  User getById(int id);

  User getByNumber(String number);

  int addUser(User user);

  void deleteUserById(int id);

  User updateUser(User user);

}
@Repository
public class UserDaoImpl implements UserDao {

  @PersistenceContext
  private EntityManager entityManager;

  @Override
  public User getById(int id) {
    //find by primary key
    return this.entityManager.find(User.class,id);
  }

  @Override
  public User getByNumber(String number) {
    Query query = this.entityManager.createQuery("from User u where u.number=:number",User.class);
    query.setParameter("number",number);
    User user = (User)query.getSingleResult();
    return user;
  }

  @Override
  public int addUser(User user) {
    this.entityManager.persist(user);
    //print the id
    System.out.println(user.getId());
    return user.getId();
  }

  @Override
  public void deleteUserById(int id) {
    User user = this.entityManager.find(User.class,id); //關(guān)聯(lián)到記錄，方可刪除
    this.entityManager.remove(user);
  }

  @Override
  public User updateUser(User user) {
    User userNew = this.entityManager.merge(user);
    return userNew;
  }
}

5.service層

public interface UserService {

  User getById(int id);

  User getByNumber(String number);

  int addUser(User user,boolean throwEx);

  void deleteUserById(int id);

  User updateUser(User user);
}
@Service
@Transactional
public class UserServiceImpl implements UserService {

  @Autowired
  private UserDao userDao;

  @Override
  @Transactional(readOnly = true)
  public User getById(int id) {
    return userDao.getById(id);
  }

  @Override
  @Transactional(readOnly = true)
  public User getByNumber(String number) {
    return userDao.getByNumber(number);
  }

  @Override
  public int addUser(User user,boolean throwEx) {
    int id= this.userDao.addUser(user);
    if(throwEx){
      throw new RuntimeException("throw a ex");
    }
    return id;
  }

  @Override
  public void deleteUserById(int id) {
    this.userDao.deleteUserById(id);
  }

  @Override
  public User updateUser(User user) {
    return this.userDao.updateUser(user);
  }


}

6.controller層

@Controller("user1")
@RequestMapping("/jpa/user")
public class UserController {
  /**
   * 日志（slf4j->logback）
   */
  private static final Logger logger = LoggerFactory.getLogger(UserController.class);

  @Autowired
  private UserService userService;

  /**
   * 返回text格式數(shù)據(jù)
   * @param id 主鍵id
   * @return 用戶json字符串
   */
  @RequestMapping("/get/id/{id}")
  @ResponseBody
  public String getUserById(@PathVariable("id")String id){
    logger.info("request /user/get/id/{id}, parameter is "+id);
    User user = userService.getById(Integer.parseInt(id));
    return JSONObject.toJSONString(user);
  }

  /**
   * 返回json格式數(shù)據(jù)
   * @param number 編號(hào)
   * @return 用戶
   */
  @RequestMapping("/get/number/{number}")
  @ResponseBody
  public User getUserByNumber(@PathVariable("number")String number){
    User user = userService.getByNumber(number);
    return user;
  }

  @RequestMapping("/add/{number}/{name}")
  @ResponseBody
  public String addUser(@PathVariable("number")String number,@PathVariable("name")String name,boolean throwEx){
    User user = new User();
    user.setNumber(number);
    user.setName(name);
    int id = -1;
    try{
      id = userService.addUser(user,throwEx);
    }catch (RuntimeException ex){
      System.out.println(ex.getMessage());
    }
    return String.valueOf(id);
  }

  @RequestMapping("/delete/{id}")
  @ResponseBody
  public void getUserById(@PathVariable("id")int id){
    this.userService.deleteUserById(id);
  }

  @RequestMapping("/update/{id}/{number}/{name}")
  @ResponseBody
  public User addUser(@PathVariable("id")int id, @PathVariable("number")String number, @PathVariable("name")String name){
    User user = new User();
    user.setId(id);
    user.setNumber(number);
    user.setName(name);
    return userService.updateUser(user);
  }
}

7. spring data jpa新使用方式，更高級(jí)

1.dao

@Repository
public interface UserRepository extends JpaRepository<User, Integer> {
  /**
   * spring data jpa 會(huì)自動(dòng)注入實(shí)現(xiàn)（根據(jù)方法命名規(guī)范）
   * @return
   */
  User findByNumber(String number);


  @Modifying
  @Query("delete from User u where u.id = :id")
  void deleteUser(@Param("id")int id);
}

2.service

public interface UserService {

  User findById(int id);

  User findByNumber(String number);

  List<User> findAllUserByPage(int page,int size);

  User updateUser(User user,boolean throwEx);

  void deleteUser(int id);
}

@Service
@Transactional
public class UserServiceImpl implements UserService {

  @Autowired
  private UserRepository userRepository;

  @Override
  public User findById(int id) {
    return this.userRepository.findOne(id);
  }

  @Override
  public User findByNumber(String number) {
    return this.userRepository.findByNumber(number);
  }

  @Override
  public List<User> findAllUserByPage(int page,int size) {
    Pageable pageable = new PageRequest(page, size);
    Page<User> users = this.userRepository.findAll(pageable);
    return users.getContent();
  }

  @Override
  public User updateUser(User user,boolean throwEx) {
    User userNew = this.userRepository.save(user);
    if(throwEx){
      throw new RuntimeException("throw a ex");
    }
    return userNew;
  }

  @Override
  public void deleteUser(int id) {
    this.userRepository.deleteUser(id);
  }
}


3.controller

@Controller("user2")
@RequestMapping("/datajpa/user")
public class UserController {
  /**
   * 日志（slf4j->logback）
   */
  private static final Logger logger = LoggerFactory.getLogger(UserController.class);

  @Autowired
  private UserService userService;

  /**
   * 返回text格式數(shù)據(jù)
   * @param id 主鍵id
   * @return 用戶json字符串
   */
  @RequestMapping("/get/id/{id}")
  @ResponseBody
  public String getUserById(@PathVariable("id")String id){
    logger.info("request /user/get/id/{id}, parameter is "+id);
    User user = userService.findById(Integer.parseInt(id));
    return JSONObject.toJSONString(user);
  }

  /**
   * 返回json格式數(shù)據(jù)
   * @param number 編號(hào)
   * @return 用戶
   */
  @RequestMapping("/get/number/{number}")
  @ResponseBody
  public User getUserByNumber(@PathVariable("number")String number){
    User user = userService.findByNumber(number);
    return user;
  }

  @RequestMapping("/get/all/{page}/{size}")
  @ResponseBody
  public List<User> getAllUserByPage(@PathVariable("page")int page,@PathVariable("size")int size){
    return this.userService.findAllUserByPage(page,size);
  }

  @RequestMapping("/update/{id}/{number}/{name}")
  @ResponseBody
  public User addUser(@PathVariable("id")int id, @PathVariable("number")String number, @PathVariable("name")String name,boolean throwEx){
    User user = new User();
    user.setId(id);
    user.setNumber(number);
    user.setName(name);
    User userNew = null;
    try{
      userService.updateUser(user,throwEx);
    }catch (RuntimeException ex){
      System.out.println(ex.getMessage());
    }
    return userNew;
  }

  @RequestMapping("/delete/{id}")
  @ResponseBody
  public void getUserById(@PathVariable("id")int id){
    this.userService.deleteUser(id);
  }


}

8.注入jdbcTemplate和transactionTemplate,使用傳統(tǒng)方式操作數(shù)據(jù)庫(kù)，更加靈活，方法如下

@Autowired
  private JdbcTemplate jdbcTemplate;

  @Autowired
  private TransactionTemplate transactionTemplate;

  /**
   * 手動(dòng)控制事物測(cè)試
   * @param throwEx
   */
  @Override
  public void testTransactionManually(boolean throwEx) {

    try {
      transactionTemplate.execute(new TransactionCallback<Boolean>() {

        /**
         * 事物代碼
         *
         * @param transactionStatus 事物狀態(tài)
         * @return 是否成功
         */
        @Override
        public Boolean doInTransaction(TransactionStatus transactionStatus) {
          User user = new User();
          user.setId(1);
          int a = new Random().nextInt(10); //0-9
          user.setNumber("10000u" + a);
          jdbcTemplate.update("UPDATE USER SET NUMBER=? WHERE ID=?", new Object[]{user.getNumber(), user.getId()}, new int[]{Types.VARCHAR, Types.INTEGER});
          if (throwEx) {
            throw new RuntimeException("try throw exception"); //看看會(huì)不會(huì)回滾
          }
          return true;
        }
      });
    }catch (RuntimeException ex){
      System.out.println(ex.getMessage());
    }

  }

  /**
   * 手動(dòng)執(zhí)行jdbc測(cè)試
   */
  @Override
  public void testJdbcTemplate() {
    User user = new User();
    int a = new Random().nextInt(10); //0-9
    user.setNumber("10000i"+ a );
    user.setName("name"+a);
    this.jdbcTemplate.update("INSERT into USER(NUMBER,NAME )VALUES (?,?)",user.getNumber(),user.getName());
  }

至此，我已經(jīng)講了三種方式（jpa兩種+jdbcTemplate）如何操作數(shù)據(jù)庫(kù)了，你愛怎么用就怎么用，上述代碼均是實(shí)踐證明可行的！

以上這篇基于spring boot 1.5.4 集成 jpa+hibernate+jdbcTemplate(詳解)就是小編分享給大家的全部?jī)?nèi)容了，希望能給大家一個(gè)參考，也希望大家多多支持創(chuàng)新互聯(lián)。

分享標(biāo)題：基于springboot1.5.4集成jpa+hibernate+jdbcTemplate(詳解)
標(biāo)題鏈接：http://bm7419.com/article12/gochgc.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供面包屑導(dǎo)航、用戶體驗(yàn)、關(guān)鍵詞優(yōu)化、軟件開發(fā)、移動(dòng)網(wǎng)站建設(shè)、網(wǎng)站建設(shè)

廣告

聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請(qǐng)盡快告知，我們將會(huì)在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng)，如需處理請(qǐng)聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時(shí)需注明來源： 創(chuàng)新互聯(lián)

小程序開發(fā)