这篇文章主要为大家展示了“javax.validation结合spring的示例分析”，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让小编带领大家一起研究并学习一下“javax.validation结合spring的示例分析”这篇文章吧。
JSR303 是一套JavaBean参数校验的标准，它定义了很多常用的校验注解，我们可以直接将这些注解加在我们JavaBean的属性上面，就可以在需要校验的时候进行校验了。
注解如下：
Hibernate validator 在JSR303的基础上对校验注解进行了扩展，扩展注解如下：
<!--jsr 303--> <dependency> <groupId>javax.validation</groupId> <artifactId>validation-api</artifactId> <version>1.1.0.Final</version> </dependency> <!-- hibernate validator--> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>5.2.0.Final</version> </dependency>
<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean"/>
这里使用的Lombok获取get和set，使用的@Getter注解
@AllArgsConstructor 这个注解是lombok中为类提供一个全参的构造方法
package com.alibaba.xianzhi.validator;
import java.io.Serializable;
import lombok.AllArgsConstructor;
import lombok.Getter;
/**
* Created by Jackielee on 2017
* @author: lizhilong
* @date: 2017-11-14 18:01:34
*/
@Getter
@AllArgsConstructor
public class Violation implements Serializable {
private static final long serialVersionUID = -1731546219600067986L;
private final String message;
private final Object bean;
private final String property;
private final Object value;
}后面会说这个类的用法
package com.alibaba.xianzhi.validator;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.validation.ConstraintViolation;
import lombok.AllArgsConstructor;
import lombok.Getter;
import org.apache.commons.collections.CollectionUtils;
/**
* @author: lizhilong
* @date: 2017-11-15 11:41:12
*/
@AllArgsConstructor
public class ViolationBuild{
@Getter
private Set<Violation> violations;
public String getMessage() {
List<String> list = new ArrayList<String>();
for (Violation violation : violations) {
list.add(violation.getMessage());
}
return list.size() > 0 ? list.get(0) : "";
}
public static <T> ViolationBuild build(Set<ConstraintViolation<T>> cvs) {
Set<Violation> result = new HashSet<Violation>();
if (CollectionUtils.isNotEmpty(cvs)) {
for (ConstraintViolation cv : cvs) {
result.add(new Violation(cv.getMessage(), cv.getRootBean() == null ? null : cv.getRootBean().toString(),
cv.getPropertyPath() == null ? null : cv.getPropertyPath().toString(),
cv.getInvalidValue()));
}
}
return new ViolationBuild(result);
}
}package com.alibaba.xianzhi.validator;
import java.util.Set;
import javax.validation.ConstraintViolation;
import javax.validation.ValidationException;
import javax.validation.Validator;
import lombok.AllArgsConstructor;
import lombok.Getter;
/**
* @author: lizhilong
* @date: 2017-11-15 11:40:59
*/
@AllArgsConstructor
@Getter
public class ValidatorProvider {
private final Validator validator;
public <T> ViolationBuild validate(T object) {
Set<ConstraintViolation<T>> violations;
try {
violations = validator.validate(object);
} catch (IllegalArgumentException iae) {
throw iae;
} catch (ValidationException ve) {
throw ve;
}
return ViolationBuild.build(violations);
}
public <T> ViolationBuild validate(T object, Class<?>... groups) {
Set<ConstraintViolation<T>> violations;
try {
violations = validator.validate(object, groups);
} catch (IllegalArgumentException iae) {
throw iae;
} catch (ValidationException ve) {
throw ve;
}
return ViolationBuild.build(violations);
}
public <T> ViolationBuild validateProperty(T object, String propertyName, Class<?>... groups) {
Set<ConstraintViolation<T>> violations;
try {
violations = validator.validateProperty(object, propertyName, groups);
} catch (IllegalArgumentException iae) {
throw iae;
} catch (ValidationException ve) {
throw ve;
}
return ViolationBuild.build(violations);
}
public <T> ViolationBuild validateValue(Class<T> beanType, String propertyName, Object value, Class<?>... groups) {
Set<ConstraintViolation<T>> violations;
try {
violations = validator.validateValue(beanType, propertyName, value, groups);
} catch (IllegalArgumentException iae) {
throw iae;
} catch (ValidationException ve) {
throw ve;
}
return ViolationBuild.build(violations);
}
}java不能多继承 所以如果已经继承了别的类，可以将此类注入出来
此类是为了拿到一个单例的ValidatorProvider
package com.alibaba.xianzhi.base.web;
import javax.annotation.Resource;
import javax.validation.Validator;
import com.alibaba.xianzhi.validator.ValidatorProvider;
/**
* BaseService
* @author: lizhilong
* @date: 2017-11-15 11:41:24
*/
public abstract class BaseService {
@Resource
protected Validator validator;
private ValidatorProvider validatorProvider;
protected ValidatorProvider getValidatorProvider() {
if (validatorProvider == null) {
validatorProvider = new ValidatorProvider(validator);
}
return validatorProvider;
}
}说明：Constants为接口常量
@Getter
@AllArgsConstructor
public class SubmitVO extends BaseVO {
@NotNull(message="厂商不能为空")
private Long companyId;
@Length(min=0, max=100, message="标题请控制在" + Constants.MAX_TITLE + "个字符以内")
@NotNull(message="标题不能为空")
private String title;
@Length(min=0, max=65535, message="修复方案长度不能超过" + Constants.MAX_FIX_ADVICE)
@NotNull(message="修复方案不能为空")
private String fixAdvice;
}public BaseResponse save(SubmitVO submitVO ) {
/**
* getValidatorProvider()此方法是BaserService中，
* 上面说到本人的service是继承此
* service的所以可以直接用
**/
ValidatorProvider validatorProvider = getValidatorProvider();
/**
* validatorProvider调用validate（Object obj）进行校验
* 返回ViolationBuild
**/
ViolationBuild validateFlaw = validatorProvider.validate(submitVO);
/**
* 此时如果校验有失败的 容器中便会存储信息，ViolationBuild可以通过自己的
* getMessage方法获取信息（此方法可以自己封装成自己想要的样子）
**/
System.out.println(validateFlaw.getMessage());
}打印结果：标题请控制在100个字符以内
以上是“javax.validation结合spring的示例分析”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注亿速云行业资讯频道！
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