反射比较两个对象属性值是否有修改

springMVC Control

@RequestMapping(value = "/save", method = RequestMethod.POST)
	public String save(RedirectAttributes redirectAttr,
			GoodsSupplierPrice gsp,
			@ModelAttribute(App.SESSION_USER_KEY) SessionUser sessionUser) {
		if (gsp.getId() == null) {
			gsp.setOperUserId(sessionUser.getUserId());
			this.goodsSupplierPriceService.save(gsp);
			operateLogService.insert("insert", "插入-采购报价SKU:"+gsp.getGoodsSku(), sessionUser.getUserId(), "采购管理", "采购报价管理");	
		} else {
			GoodsSupplierPrice gspOld = this.goodsSupplierPriceService.load(gsp.getId());
			try{
				String editMsg= CommonUtil.getEditMsg(gspOld,gsp,gsp.getClass().getName());
			    this.goodsSupplierPriceService.update(gsp);
			    operateLogService.insert("update", "更新-采购报价SKU:"+gsp.getGoodsSku()+"["+editMsg+"]", sessionUser.getUserId(), "采购管理", "采购报价管理");	
			 }catch(Exception e){
				e.printStackTrace();
			}
		}

实体对象

import java.math.BigDecimal;
import java.util.Date;

import org.springframework.format.annotation.DateTimeFormat;

import com.fasterxml.jackson.annotation.JsonFormat;
import com.xuanfeiyang.annotations.Column;

public class GoodsSupplierPrice {
	private Integer id;

	private Integer supplierId;
    
	@Column(Desc = "SKU")
	private String goodsSku;
	
	@Column(Desc = "商品名称")
	private String goodsName;
	
	@Column(Desc = "商品单位")
	private String goodsUnit;
	
	@Column(Desc = "采购量从")
	private Integer countMin;
	
	@Column(Desc = "采购量到")
	private Integer countMax;
	
	@Column(Desc = "报价")
	private BigDecimal price;

	@JsonFormat(pattern="yyyy-MM-dd", timezone="GMT+8")
	@DateTimeFormat(pattern="yyyy-MM-dd")
	private Date startDate;

	@JsonFormat(pattern="yyyy-MM-dd", timezone="GMT+8")
	@DateTimeFormat(pattern="yyyy-MM-dd")
	private Date endDate;
	
	@Column(Desc = "采购周期")
	private Short buyPeriod;
	
	@Column(Desc = "优先级")
	private Short priority;
	
	@Column(Desc = "备注")
	private String note;

	private Integer operUserId;

	private Date createdTime;

	private Date lastUpdatedTime;
	
	// 附件字段：供应商名称
	private String supplierName;
	
	// 附件字段：维护人名称
	private String operUserName;

	public String getSupplierName() {
		return supplierName;
	}

	public void setSupplierName(String supplierName) {
		this.supplierName = supplierName;
	}

	public String getOperUserName() {
		return operUserName;
	}

	public void setOperUserName(String operUserName) {
		this.operUserName = operUserName;
	}

	public Integer getId() {
		return id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public Integer getSupplierId() {
		return supplierId;
	}

	public void setSupplierId(Integer supplierId) {
		this.supplierId = supplierId;
	}

	public String getGoodsSku() {
		return goodsSku;
	}

	public void setGoodsSku(String goodsSku) {
		this.goodsSku = goodsSku == null ? null : goodsSku.trim();
	}

	public String getGoodsName() {
		return goodsName;
	}

	public void setGoodsName(String goodsName) {
		this.goodsName = goodsName == null ? null : goodsName.trim();
	}

	public String getGoodsUnit() {
		return goodsUnit;
	}

	public void setGoodsUnit(String goodsUnit) {
		this.goodsUnit = goodsUnit == null ? null : goodsUnit.trim();
	}

	public Integer getCountMin() {
		return countMin;
	}

	public void setCountMin(Integer countMin) {
		this.countMin = countMin;
	}

	public Integer getCountMax() {
		return countMax;
	}

	public void setCountMax(Integer countMax) {
		this.countMax = countMax;
	}

	public BigDecimal getPrice() {
		return price;
	}

	public void setPrice(BigDecimal price) {
		this.price = price;
	}

	public Date getStartDate() {
		return startDate;
	}

	public void setStartDate(Date startDate) {
		this.startDate = startDate;
	}

	public Date getEndDate() {
		return endDate;
	}

	public void setEndDate(Date endDate) {
		this.endDate = endDate;
	}

	public Short getBuyPeriod() {
		return buyPeriod;
	}

	public void setBuyPeriod(Short buyPeriod) {
		this.buyPeriod = buyPeriod;
	}

	public Short getPriority() {
		return priority;
	}

	public void setPriority(Short priority) {
		this.priority = priority;
	}

	public String getNote() {
		return note;
	}

	public void setNote(String note) {
		this.note = note == null ? null : note.trim();
	}

	public Integer getOperUserId() {
		return operUserId;
	}

	public void setOperUserId(Integer operUserId) {
		this.operUserId = operUserId;
	}

	public Date getCreatedTime() {
		return createdTime;
	}

	public void setCreatedTime(Date createdTime) {
		this.createdTime = createdTime;
	}

	public Date getLastUpdatedTime() {
		return lastUpdatedTime;
	}

	public void setLastUpdatedTime(Date lastUpdatedTime) {
		this.lastUpdatedTime = lastUpdatedTime;
	}
}

工具类

/**
     * 数据修改对比统计
     * @param oldT 修改前
     * @param newT 修改后
     * @param className 类名
     * @param <T>
     * @return
     * @throws Exception
     */
    public static <T> String getEditMsg(T oldT, T newT, String className) throws Exception{
        Class onwClass = Class.forName(className);
        StringBuffer editMsg = new StringBuffer();
        Field[] fields = onwClass.getDeclaredFields();
        for (Field f : fields) {
            // 过滤 static、 final、private static final字段
            if (f.getModifiers() == 16 || f.getModifiers() == 8
                    || f.getModifiers() == 26) {
                continue;
            }
            com.xuanfeiyang.annotations.Column annotationColumn = f.getAnnotation(com.xuanfeiyang.annotations.Column.class);
            if (annotationColumn == null) {
                continue;
            }
            Object oldV = ReflectUtil.getValueMethod(oldT,f.getName(),f.getType());
            Object newV = ReflectUtil.getValueMethod(newT,f.getName(),f.getType());
            if (newV != null && !newV.equals(oldV) && StringUtils.isNotBlank(newV.toString())) {
                editMsg.append(annotationColumn.Desc() + " 从 " + oldV + "修改成" + newV + "<br>");
            }
        }
        return editMsg.toString();
    }