@注解_唯一约束

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直接上代码咯

package cn.jbit.test2.bean;import java.io.Serializable;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;import javax.persistence.Table;import javax.persistence.UniqueConstraint;@Entity@Table(name = "TBL_FLIGHT", uniqueConstraints = @UniqueConstraint(name = "flight_number", columnNames = {"comp_prefix", "flight_number" }))public class Flight implements Serializable {private static final long serialVersionUID = -2329039752473928764L;@Id@GeneratedValueprivate Integer id;@Column(name = "comp_prefix")private String comp_prefix;@Column(name = "flight_number")private String flight_number;public Flight() {super();}public Flight(Integer id, String compPrefix, String flightNumber) {super();this.id = id;comp_prefix = compPrefix;flight_number = flightNumber;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getComp_prefix() {return comp_prefix;}public void setComp_prefix(String compPrefix) {comp_prefix = compPrefix;}public String getFlight_number() {return flight_number;}public void setFlight_number(String flightNumber) {flight_number = flightNumber;}}

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