JPA注解：根据实体生成数据表和字段的注释（正向工程）_jpa 表注释和字段注释_jpa注释–hibernate注释

     
     
/*
 * Copyright (c) 2008, 2009, 2011 Oracle, Inc. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.  The Eclipse Public License is available
 * at http://www.eclipse.org/legal/epl-v10.html and the Eclipse Distribution License
 * is available at http://www.eclipse.org/org/documents/edl-v10.php.
 */
package javax.persistence;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
 * Is used to specify the mapped column for a persistent property or field.
 * If no <code>Column</code> annotation is specified, the default values apply.
 *
 * <blockquote><pre>
 *    Example 1:
 *
 *    &#064;Column(name="DESC", nullable=false, length=512)
 *    public String getDescription() { return description; }
 *
 *    Example 2:
 *
 *    &#064;Column(name="DESC",
 *            columnDefinition="CLOB NOT NULL",
 *            table="EMP_DETAIL")
 *    &#064;Lob
 *    public String getDescription() { return description; }
 *
 *    Example 3:
 *
 *    &#064;Column(name="ORDER_COST", updatable=false, precision=12, scale=2)
 *    public BigDecimal getCost() { return cost; }
 *
 * </pre></blockquote>
 *
 *
 * @since Java Persistence 1.0
 */
@Target({METHOD, FIELD})
@Retention(RUNTIME)
public @interface Column {
    /**
     * (Optional) The name of the column. Defaults to
 * the property or field name.
     */
    String name() default "";
    /**
     * (Optional) Whether the column is a unique key.  This is a
     * shortcut for the <code>UniqueConstraint</code> annotation at the table
     * level and is useful for when the unique key constraint
     * corresponds to only a single column. This constraint applies
     * in addition to any constraint entailed by primary key mapping and
     * to constraints specified at the table level.
     */
    boolean unique() default false;
    /**
     * (Optional) Whether the database column is nullable.
     */
    boolean nullable() default true;
    /**
     * (Optional) Whether the column is included in SQL INSERT
     * statements generated by the persistence provider.
     */
    boolean insertable() default true;
    /**
     * (Optional) Whether the column is included in SQL UPDATE
     * statements generated by the persistence provider.
     */
    boolean updatable() default true;
    /**
     * (Optional) The SQL fragment that is used when
     * generating the DDL for the column.
     * <p> Defaults to the generated SQL to create a
     * column of the inferred type.
     */
    String columnDefinition() default "";
    /**
     * (Optional) The name of the table that contains the column.
 * If absent the column is assumed to be in the primary table.
     */
    String table() default "";
    /**
     * (Optional) The column length. (Applies only if a
     * string-valued column is used.)
     */
    int length() default 255;
    /**
     * (Optional) The precision for a decimal (exact numeric)
 * column. (Applies only if a decimal column is used.)
     * Value must be set by developer if used when generating
     * the DDL for the column.
     */
    int precision() default 0;
    /**
     * (Optional) The scale for a decimal (exact numeric) column.
     * (Applies only if a decimal column is used.)
     */
    int scale() default 0;
}

     
     
package com.newcapec.dao.domain;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import java.util.Date;
import static javax.persistence.GenerationType.AUTO;
/**
 * @Title: 用户报名缴费信息实体
 * @ClassName: com.newcapec.dao.domain.UserEnrollPay.java
 * @Description: 位于校内的报名系统--中间库上
 *
 * @Copyright 2016-2017 新开普 - Powered By 研发中心
 * @author: 王延飞
 * @date:  2017-12-13 15:31
 * @version V1.0
 */
@Entity
@org.hibernate.annotations.Table(appliesTo = "user_enroll_pay",comment="用户报名缴费信息")
@ApiModel("Person(用户报名缴费信息)")
public class UserEnrollPay {
    @Id
    @GeneratedValue(strategy = AUTO)
    @Column(name = "id", unique = true, nullable = false,columnDefinition="bigint(20) COMMENT '主键id'")
    @ApiModelProperty("主键id")
    private Long id;
    /**
     * 证件号
     */
    @Column(columnDefinition="varchar(20) COMMENT '证件号'")
    @ApiModelProperty("证件号")
    private String idserial;
    /**
     * 订单金额
     */
    @Column(columnDefinition = "Decimal(10,2) COMMENT '订单金额'", scale = 2 ,precision=10)
    @ApiModelProperty("订单金额")
    private double orderamt;
    /**
     * 支付时间
     */
    @Column(columnDefinition="datetime COMMENT '支付时间'")
    @ApiModelProperty("支付时间")
    private Date paytime;
    /**
     * 支付标志
     * 0-未支付
     * 1-支付中
     * 2-支付成功
     * 3-支付失败
     * 4-已过期
     * 5-已取消
     */
    @Column(columnDefinition="int(2) COMMENT '支付标志 0-未支付 1-支付中 2-支付成功 3-支付失败 4-已过期 5-已取消'")
    @ApiModelProperty("支付标志 0-未支付 1-支付中 2-支付成功 3-支付失败 4-已过期 5-已取消")
    private Integer payflag;
    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public String getIdserial() {
        return idserial;
    }
    public void setIdserial(String idserial) {
        this.idserial = idserial;
    }
    public double getOrderamt() {
        return orderamt;
    }
    public void setOrderamt(double orderamt) {
        this.orderamt = orderamt;
    }
    public Date getPaytime() {
        return paytime;
    }
    public void setPaytime(Date paytime) {
        this.paytime = paytime;
    }
    public Integer getPayflag() {
        return payflag;
    }
    public void setPayflag(Integer payflag) {
        this.payflag = payflag;
    }
    @Override
    public String toString() {
        return "UserEnrollPay{" +
                "id=" + id +
                ", idserial='" + idserial + '\'' +
                ", orderamt=" + orderamt +
                ", paytime=" + paytime +
                ", payflag=" + payflag +
                '}';
    }
}