Question

这里我想从列表中设置2列值，这样我就可以一次更新多行，但是它没有用。

String hql = "UPDATE empDTO set empstatus =(:status) , empreason = 
            (:reason) WHERE enpID=(:id) and createdOn =:CreatedOn ";
            Query query = session.createQuery(hql);
            query.setParameterList("status", status);//status is list
            query.setParameterList("reason", reason);//reason is list
            query.setParameterList("id", id);//id is list
            query.setParameter("CreatedOn",new Date());
             query.executeUpdate();
            rowAffected = query.executeUpdate();

org.hibernate.exception.DataException：无法执行更新查询在org.hibernate.exception.SQLStateConverter.convert（SQLStateConverter.java:102）在org.hibernate.exception.JDBCExceptionHelper.convert（JDBCExceptionHelper.java:66）

引起：java.sql.SQLException：操作数应包含1列

Answer 1

我建议你BatchPreparedStatementSetter来做

您创建DTO以更新employeeUpdateDTO列表

public class EmployeeUpdateDTO {
    private Integer empId;
    private String reason;
    private String status;

    public Integer getEmpId() {
        return empId;
    }

    public void setEmpId(Integer empId) {
        this.empId = empId;
    }

    public String getReason() {
        return reason;
    }

    public void setReason(String reason) {
        this.reason = reason;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }
}

将此添加到您的实施中;

    public void updateEmployee(List<EmployeeUpdateDTO> employeeUpdateDTOs) {
            String updateQuery = "UPDATE empDTO set empstatus =?,empreason =? WHERE enpID=? and createdOn =?";
            try {
                int[] updateCounts = jdbcTemplate.batchUpdate(updateQuery,
                        new BatchPreparedStatementSetter() {
                            public void setValues(PreparedStatement ps, int i) throws SQLException {

                                ps.setInt(1, employeeUpdateDTOs.get(i).empId);
                                ps.setString(2, employeeUpdateDTOs.get(i).getReason());
                                ps.setString(3, employeeUpdateDTOs.get(i).getStatus());
 ps.setDate(4, new java.sql.Date(System.currentTimeMillis())));
                            }

                            public int getBatchSize() {
                                return employeeUpdateDTOs.size();
                            }
                        });

            } catch (Exception e) {
                e.printStackTrace();

            }

        }

如何在hibernate中将列值设置为Arraylist

1 个答案: