/**
   * 模糊匹配
   * @param bauer
   * @return
   */
  @Query("select c from Customer c where c.firstName=?1")
  Customer findByFirstName2(String bauer);

  @Query("select c from Customer c where c.lastName=?1 order by c.id desc")
  List<Customer> findByLastName2(String lastName);

  /**
   * 一個(gè)參數(shù)，匹配兩個(gè)字段
   * @param name2
   * @return
   * 這里Param的值和=:后面的參數(shù)匹配，但不需要和方法名對(duì)應(yīng)的參數(shù)值對(duì)應(yīng)
   */
  @Query("select c from Customer c where c.firstName=:name or c.lastName=:name order by c.id desc")
  List<Customer> findByName(@Param("name") String name2);

  /**
   * 一個(gè)參數(shù)，匹配兩個(gè)字段
   * @param name
   * @return
   * 這里的%只能放在占位的前面，后面不行
   */
  @Query("select c from Customer c where c.firstName like %?1")
  List<Customer> findByName2(@Param("name") String name);

  /**
   * 一個(gè)參數(shù)，匹配兩個(gè)字段
   * @param name
   * @return
   * 開(kāi)啟nativeQuery=true，在value里可以用原生SQL語(yǔ)句完成查詢(xún)
   */
  @Query(nativeQuery = true,value = "select * from Customer c where c.first_name like concat('%' ,?1,'%') ")
  List<Customer> findByName3(@Param("name") String name);

 
  /**
   * @Query注解方式查詢(xún)
   * 查詢(xún)FirstName為指定字符串
   */
  @RequestMapping("/findByFirstName2")
  public void findByFirstName2(){
    Customer customer = repository.findByFirstName2("Bauer");
    if(customer!=null){
      System.out.println(customer.toString());
    }
    System.out.println("-------------------------------------------");
  }

  /**
   * @Query注解方式查詢(xún)
   * 查詢(xún)LastName為指定字符串
   */
  @RequestMapping("/findByLastName2")
  public void findByLastName2(){
    List<Customer> result = repository.findByLastName2("Bauer");
    for (Customer customer:result){
      System.out.println(customer.toString());
    }
    System.out.println("-------------------------------------------");
  }

  /**
   * @Query注解方式查詢(xún),
   * 用@Param指定參數(shù)，匹配firstName和lastName
   */
  @RequestMapping("/findByName")
  public void findByName(){
    List<Customer> result = repository.findByName("Bauer");
    for (Customer customer:result){
      System.out.println(customer.toString());
    }
    System.out.println("-------------------------------------------");
  }

  /**
   * @Query注解方式查詢(xún),使用關(guān)鍵詞like
   * 用@Param指定參數(shù)，firstName的結(jié)尾為e的字符串
   */
  @RequestMapping("/findByName2")
  public void findByName2(){
    List<Customer> result = repository.findByName2("e");
    for (Customer customer:result){
      System.out.println(customer.toString());
    }
    System.out.println("-------------------------------------------");
  }

  /**
   * @Query注解方式查詢(xún)，模糊匹配關(guān)鍵字e
   */
  @RequestMapping("/findByName3")
  public void findByName3(){
    List<Customer> result = repository.findByName3("e");
    for (Customer customer:result){
      System.out.println(customer.toString());
    }
    System.out.println("-------------------------------------------");
  }