源码分析:若依用户 user_id查询返回除了用户表，为何还带有部门dept和角色role表呢

 通过认真分析SysUser.java

部份源码如下，

 private SysDept dept; 
以下是toString(){

.append("dept", getDept())
 .append("roles", getRoles())

} 

package com.ruoyi.common.core.domain.entity;

import java.util.Date;
import java.util.List;
import javax.validation.constraints.*;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.ruoyi.common.annotation.Excel;
import com.ruoyi.common.annotation.Excel.ColumnType;
import com.ruoyi.common.annotation.Excel.Type;
import com.ruoyi.common.annotation.Excels;
import com.ruoyi.common.core.domain.BaseEntity;

/**
 * 用户对象 sys_user
 * 
 * @author ruoyi
 */
public class SysUser extends BaseEntity
{
    private static final long serialVersionUID = 1L;

   private SysDept dept;

    private List<SysRole> roles;

    /** 角色组 */
    private Long[] roleIds;

    /** 岗位组 */
    private Long[] postIds;

    public SysDept getDept()
    {
        if (dept == null)
        {
            dept = new SysDept();
        }
        return dept;
    }

    public void setDept(SysDept dept)
    {
        this.dept = dept;
    }

    public List<SysRole> getRoles()
    {
        return roles;
    }

    public void setRoles(List<SysRole> roles)
    {
        this.roles = roles;
    }

    public Long[] getRoleIds()
    {
        return roleIds;
    }

   

    @Override
    public String toString() {
        return new ToStringBuilder(this,ToStringStyle.MULTI_LINE_STYLE)
            .append("userId", getUserId())
            .append("deptId", getDeptId())
            .append("loginName", getLoginName())
            .append("userName", getUserName())
            .append("userType", getUserType())
            .append("email", getEmail())
            .append("phonenumber", getPhonenumber())
            .append("sex", getSex())
            .append("avatar", getAvatar())
            .append("password", getPassword())
            .append("salt", getSalt())
            .append("status", getStatus())
            .append("delFlag", getDelFlag())
            .append("loginIp", getLoginIp())
            .append("loginDate", getLoginDate())
            .append("createBy", getCreateBy())
            .append("createTime", getCreateTime())
            .append("updateBy", getUpdateBy())
            .append("updateTime", getUpdateTime())
            .append("remark", getRemark())
            .append("dept", getDept())
            .append("roles", getRoles())
            .toString();
    }
}