彈簧啟動休息控制器

在這個例子中，我將展示如何使用 JPA 以最簡單和最少的程式碼來制定一個休息控制器來獲取和釋出資料到資料庫。

在此示例中，我們將引用名為 buyerRequirement 的資料表。

BuyingRequirement.java

@Entity @Table（name =BUYINGREQUIREMENTS）@NamedQueries（{@NamedQuery（name =“BuyingRequirement.findAll”，query =SELECT b FROM BuyingRequirement b）}）public class BuyingRequirement extends Domain implements Serializable {private static final long serialVersionUID = 1L;

@Column(name = "PRODUCT_NAME", nullable = false)
private String productname;

@Column(name = "NAME", nullable = false)
private String name;

@Column(name = "MOBILE", nullable = false)
private String mobile;

@Column(name = "EMAIL", nullable = false)
private String email;

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

public BuyingRequirement() {
}

public String getProductname() {
    return productname;
}

public void setProductname(String productname) {
    this.productname = productname;
}

public String getName() {
    return name;
}

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

public String getMobile() {
    return mobile;
}

public void setMobile(String mobile) {
    this.mobile = mobile;
}

public String getEmail() {
    return email;
}

public void setEmail(String email) {
    this.email = email;
}

public String getCity() {
    return city;
}

public void setCity(String city) {
    this.city = city;
}

}

這是實體類，它包含引用 byuingRequirement 表中的列及其 getter 和 setter 的引數。

IBuyingRequirementsRepository.java（JPA 介面）

@Repository
@RepositoryRestResource
public interface IBuyingRequirementsRepository extends JpaRepository<BuyingRequirement, UUID> {
   // Page<BuyingRequirement> findAllByOrderByCreatedDesc(Pageable pageable);
    Page<BuyingRequirement> findAllByOrderByCreatedDesc(Pageable pageable);
    Page<BuyingRequirement> findByNameContainingIgnoreCase(@Param("name") String name, Pageable pageable);
}

BuyingRequirementController.java

@RestController
@RequestMapping("/api/v1")
public class BuyingRequirementController {

    @Autowired
    IBuyingRequirementsRepository iBuyingRequirementsRepository;
    Email email = new Email();

    BuyerRequirementTemplate buyerRequirementTemplate = new BuyerRequirementTemplate();

    private String To = "support@pharmerz.com";
    // private String To = "amigujarathi@gmail.com";
    private String Subject = "Buyer Request From Pharmerz ";

    @PostMapping(value = "/buyingRequirement")
    public ResponseEntity<BuyingRequirement> CreateBuyingRequirement(@RequestBody BuyingRequirement buyingRequirements) {

        String productname = buyingRequirements.getProductname();
        String name = buyingRequirements.getName();
        String mobile = buyingRequirements.getMobile();
        String emails = buyingRequirements.getEmail();
        String city = buyingRequirements.getCity();
        if (city == null) {
            city = "-";
        }

        String HTMLBODY = buyerRequirementTemplate.template(productname, name, emails, mobile, city);

        email.SendMail(To, Subject, HTMLBODY);

        iBuyingRequirementsRepository.save(buyingRequirements);
        return new ResponseEntity<BuyingRequirement>(buyingRequirements, HttpStatus.CREATED);
    }

    @GetMapping(value = "/buyingRequirements")
    public Page<BuyingRequirement> getAllBuyingRequirements(Pageable pageable) {

        Page requirements = iBuyingRequirementsRepository.findAllByOrderByCreatedDesc(pageable);
        return requirements;
    }

    @GetMapping(value = "/buyingRequirmentByName/{name}")
    public Page<BuyingRequirement> getByName(@PathVariable String name,Pageable pageable){
        Page buyersByName = iBuyingRequirementsRepository.findByNameContainingIgnoreCase(name,pageable);

        return buyersByName;
    }
}

它包括那裡的方法

1. 將資料釋出到資料庫的 post 方法。
2. 獲取從 purchaseRequirement 表獲取所有記錄的方法。
3. 這也是一種 get 方法，可以通過此人的姓名找到購買要求。