转载，介绍的简单直观
http://www.cnblogs.com/huihui0630/archive/2012/09/07/2675575.html
只要有接口，就会有参数的校验，目前开源的校验框架已经非常多了，不过不得不提一下Oval。
OVal 是一个可扩展的Java对象数据验证框架，验证的规则可以通过配置文件、Annotation、POJOs 进行设定。可以使用纯 Java 语言、JavaScript 、Groovy 、BeanShell 等进行规则的编写。
使用起来也非常简单
public class OvalTest { @Min(20) private int age; @Length(min = 6, max = 10) private String name; public static void main(String[] args) { OvalTest ovalTest = new OvalTest(); ovalTest.age = 10; ovalTest.name = "kolor"; Validator validator = new Validator(); List<ConstraintViolation> ret = validator.validate(ovalTest); System.out.println(ret); } }
校验自然是不过的了，输出如下：
[net.sf.oval.ConstraintViolation: OvalTest.age cannot be smaller than 20.0, net.sf.oval.ConstraintViolation: OvalTest.name is not between 6 and 10 characters long]
maven依赖：
<dependency> <groupId>net.sf.oval</groupId> <artifactId>oval</artifactId> <version>1.81</version> </dependency>
Oval官方地址： http://oval.sourceforge.net/
=============================
Qbao enterprise demo
package com.enterprise.domain;
import net.sf.oval.constraint.MaxLength;
import net.sf.oval.constraint.MinLength;
import net.sf.oval.constraint.NotEmpty;
import net.sf.oval.constraint.NotNull;
import java.util.Date;
public class MerchantShopInfo {
public MerchantShopInfo() {
}
public MerchantShopInfo(String shopName, long merchantId, String shopContactUser, String contactPhone) {
this.shopName = shopName;
this.merchantId = merchantId;
this.shopContactUser = shopContactUser;
this.contactPhone = contactPhone;
}
public MerchantShopInfo(long id, long merchantId, String shopName, String shopContactUser,
String contactPhone) {
this.id = id;
this.merchantId = merchantId;
this.shopName = shopName;
this.shopContactUser = shopContactUser;
this.contactPhone = contactPhone;
}
public MerchantShopInfo(String logoPath,long merchantId,long id) {
this.logoPath = logoPath;
this.merchantId = merchantId;
this.id = id;
}
private long id;
@NotNull(message = "商家ID不能为空")
@NotEmpty(message = "商家ID不能为空")
private long merchantId;//商家Id
@NotNull(message = "店铺名称不能为空")
@NotEmpty(message = "店铺名称不能为空")
@MaxLength(value = 50,message = "店铺名称最多50个字")
private String shopName;//商家名称
private String logoPath;//店铺logo
private String provinceCityArea;
private String street;//店铺地址
private String shopMainBusiness;//店铺主营业务
@NotNull(message = "店铺联系人不能为空")
@NotEmpty(message = "店铺联系人不能为空")
@MaxLength(value = 50,message = "店铺联系人最多10个字")
private String shopContactUser;//店铺联系人
@NotNull(message = "联系人手机不能为空")
@NotEmpty(message = "联系人手机不能为空")
@MaxLength(value = 11,message = "联系人手机最多11个字")
private String contactPhone;//联系人手机
private String contactEmail;//联系人邮箱
@NotNull(message = "公众号简介不能为空")
@NotEmpty(message = "公众号简介不能为空")
@MaxLength(value = 120,message = "公众号简介最多120个字")
@MinLength(value = 4,message = "公众号简介最少4个字")
private String shopDesc;//公众号简介/店铺简介
private String contactFax;//联系人传真
private String netShopRegistCode;//网店工商营业执照注册号
private String netRegistImgPath;//网店营业执照
private String netBusinessScope;//网店营业执照经营范围
private Date netPeriodValidityStart;// 网店营业执照有效期
private Date netPeriodValidityEnd;//网店营业执照有效期
private String netTaxImgPath;//网店税务登记证
private Double longitude;
private Double latitude;
private int merchantType;//1:个人商家,2:企业商家
private String cover;//封面
private String appCover;
private Long userId;
private String createTime;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public long getMerchantId() {
return merchantId;
}
public void setMerchantId(long merchantId) {
this.merchantId = merchantId;
}
public String getShopName() {
return shopName;
}
public void setShopName(String shopName) {
this.shopName = shopName;
}
public String getLogoPath() {
return logoPath;
}
public void setLogoPath(String logoPath) {
this.logoPath = logoPath;
}
public String getShopMainBusiness() {
return shopMainBusiness;
}
public void setShopMainBusiness(String shopMainBusiness) {
this.shopMainBusiness = shopMainBusiness;
}
public String getShopContactUser() {
return shopContactUser;
}
public void setShopContactUser(String shopContactUser) {
this.shopContactUser = shopContactUser;
}
public String getContactPhone() {
return contactPhone;
}
public void setContactPhone(String contactPhone) {
this.contactPhone = contactPhone;
}
public String getContactFax() {
return contactFax;
}
public void setContactFax(String contactFax) {
this.contactFax = contactFax;
}
public String getContactEmail() {
return contactEmail;
}
public void setContactEmail(String contactEmail) {
this.contactEmail = contactEmail;
}
public String getShopDesc() {
return shopDesc;
}
public void setShopDesc(String shopDesc) {
this.shopDesc = shopDesc;
}
public String getNetShopRegistCode() {
return netShopRegistCode;
}
public void setNetShopRegistCode(String netShopRegistCode) {
this.netShopRegistCode = netShopRegistCode;
}
public String getNetRegistImgPath() {
return netRegistImgPath;
}
public void setNetRegistImgPath(String netRegistImgPath) {
this.netRegistImgPath = netRegistImgPath;
}
public String getNetBusinessScope() {
return netBusinessScope;
}
public void setNetBusinessScope(String netBusinessScope) {
this.netBusinessScope = netBusinessScope;
}
public Date getNetPeriodValidityStart() {
return netPeriodValidityStart;
}
public void setNetPeriodValidityStart(Date netPeriodValidityStart) {
this.netPeriodValidityStart = netPeriodValidityStart;
}
public Date getNetPeriodValidityEnd() {
return netPeriodValidityEnd;
}
public void setNetPeriodValidityEnd(Date netPeriodValidityEnd) {
this.netPeriodValidityEnd = netPeriodValidityEnd;
}
public String getNetTaxImgPath() {
return netTaxImgPath;
}
public void setNetTaxImgPath(String netTaxImgPath) {
this.netTaxImgPath = netTaxImgPath;
}
public String getCover() {
return cover;
}
public void setCover(String cover) {
this.cover = cover;
}
public String getProvinceCityArea() {
return provinceCityArea;
}
public void setProvinceCityArea(String provinceCityArea) {
this.provinceCityArea = provinceCityArea;
}
public String getStreet() {
return street;
}
public void setStreet(String street) {
this.street = street;
}
public Double getLongitude() {
return longitude;
}
public void setLongitude(Double longitude) {
this.longitude = longitude;
}
public Double getLatitude() {
return latitude;
}
public void setLatitude(Double latitude) {
this.latitude = latitude;
}
public String getShopNameCut() {
if (shopName != null && shopName.length() > 15) {
shopName = shopName.substring(0, 14) + "...";
}
return shopName;
}
public String getCreateTime() {
return createTime;
}
public void setCreateTime(String createTime) {
this.createTime = createTime;
}
public String getAppCover() {
return appCover;
}
public void setAppCover(String appCover) {
this.appCover = appCover;
}
public int getMerchantType() {
return merchantType;
}
public void setMerchantType(int merchantType) {
this.merchantType = merchantType;
}
public Long getUserId() {
return userId;
}
public void setUserId(Long userId) {
this.userId = userId;
}
}
@Override
public void addMerchanCompanyShop(MerchantShopInfo shopInfo) throws DataValidateException {
List<MerchantShopInfo> shops = merchantCompanyShopInfoRepository.getMerchantShopInfo(shopInfo.getMerchantId());
if (shops != null && shops.size() > 0) {
throw new RuntimeException("目前每个厂家只能有一家店铺!");
}
Validator validator = new Validator();
List<ConstraintViolation> errorMsg = validator.validate(shopInfo);
if (errorMsg.isEmpty()) {
try {
merchantCompanyShopInfoRepository.addMerchanCompanyShop(shopInfo);
} catch (DuplicateKeyException e) {
throw new DataValidateException("店铺名称已经存在");
} catch (Exception e) {
log.error("添加(merchantId=" + shopInfo.getMerchantId() + ")店铺信息出错", e);
throw new DataValidateException("添加店铺信息出错");
}
} else {
throw new DataValidateException(errorMsg.get(0).getMessage());
}
}