视图类:

import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.IdClass;@Entity
@IdClass(VW_App_key.class)
public class VW_App_Lab_Aux_Vwbasic {private Integer ap_id;private Integer ap_c_id;private String Project2;private String Au_SickMark;@Idpublic Integer getAp_id() {return ap_id;}public void setAp_id(Integer apId) {ap_id = apId;}public Integer getAp_c_id() {return ap_c_id;}public void setAp_c_id(Integer apCId) {ap_c_id = apCId;}@Idpublic String getProject2() {return Project2;}public void setProject2(String project2) {Project2 = project2;}public String getAu_SickMark() {return Au_SickMark;}public void setAu_SickMark(String auSickMark) {Au_SickMark = auSickMark;}}

　联合主键类：

import java.io.Serializable;import javax.persistence.Embeddable;@Embeddable
public class VW_App_key implements Serializable{//联合主键（VW_App_Lab_Aux_Vwbasic）private static final long serialVersionUID = -3304319243957837925L;  private Integer ap_id;private String Project2;public Integer getAp_id() {return ap_id;}public void setAp_id(Integer apId) {ap_id = apId;}public String getProject2() {return Project2;}public void setProject2(String project2) {Project2 = project2;}@Override  public boolean equals(Object o) {  if(o instanceof VW_App_Lab_Aux_Vwbasic){  VW_App_Lab_Aux_Vwbasic key = (VW_App_Lab_Aux_Vwbasic)o ;  if(this.ap_id == key.getAp_id() && this.Project2.equals(key.getProject2())){  return true ;  }  }  return false ;  }  @Override  public int hashCode() {  return this.Project2.hashCode();  }
}