SpSpringMVC数据验证.doc

SpringMVC数据验证在这里我们采用Hibernate-validator来进行验证，Hibernate-validator实现了JSR-303验证框架支持注解风格的验证。首先我们要到/validator/下载需要的jar包，这里以4.3.1.Final作为演示，解压后把hibernate-validator-4.3.1.Final.jar、jboss-logging-3.1.0.jar、validation-api-1.0.0.GA.jar这三个包添加到项目中。配置之前项目中的springservlet-config.xml文件，如下：复制代码 复制代码其中中的classpath:validatemessages为注解验证消息所在的文件，需要我们在resources文件夹下添加。在com.demo.web.controllers包中添加一个ValidateController.java内容如下：复制代码package com.demo.web.controllers;import java.security.NoSuchAlgorithmException;import javax.validation.Valid;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.validation.BindingResult;import org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import com.demo.web.models.ValidateModel;ControllerRequestMapping(value = /validate)public class ValidateController RequestMapping(value=/test, method = RequestMethod.GET) public String test(Model model) if(!model.containsAttribute(contentModel) model.addAttribute(contentModel, new ValidateModel(); return validatetest; RequestMapping(value=/test, method = RequestMethod.POST) public String test(Model model, Valid ModelAttribute(contentModel) ValidateModel validateModel, BindingResult result) throws NoSuchAlgorithmException /如果有验证错误 返回到form页面 if(result.hasErrors() return test(model); return validatesuccess; 复制代码其中Valid ModelAttribute(contentModel) ValidateModel validateModel的Valid 意思是在把数据绑定到ModelAttribute(contentModel) 后就进行验证。在com.demo.web.models包中添加一个ValidateModel.java内容如下：复制代码package com.demo.web.models;import org.hibernate.validator.constraints.Email;import org.hibernate.validator.constraints.NotEmpty;import org.hibernate.validator.constraints.Range;public class ValidateModel NotEmpty(message=name.not.empty) private String name; Range(min=0, max=150,message=age.not.inrange) private String age; NotEmpty(message=email.not.empty) Email(message=email.not.correct) private String email; public void setName(String name) =name; public void setAge(String age) this.age=age; public void setEmail(String email) this.email=email; public String getName() return ; public String getAge() return this.age; public String getEmail() return this.email; 复制代码在注解验证消息所在的文件即perties文件中添加以下内容：name.not.empty=u540Du79F0u4E0Du80FDu4E3Au7A7Au3002age.not.inrange=u5E74u9F84u8D85u51FAu8303u56F4u3002email.not.correct=u90AEu7BB1u5730u5740u4E0Du6B63u786Eu3002email.not.empty=u7535u5B50u90AEu4EF6u4E0Du80FDu60DFu6050u3002其中name.not.empty等分别对应了ValidateModel.java文件中message=”xxx”中的xxx名称，后面的内容是在输入中文是自动转换的ASCII编码，当然你也可以直接把xxx写成提示内容，而不用另建一个perties文件再添加，但这是不正确的做法，因为这样硬编码的话就没有办法进行国际化了。在views文件夹中添加validatetest.jsp和validatesuccess.jsp两个视图，内容分别如下：复制代码Insert title here name： age： email： 复制代码复制代码Insert title here 验证成功！复制代码其中特别要指出的是validatetest.jsp视图中的modelAttribute=xxx后面的名称xxx必须与对应的Valid ModelAttribute(xxx) 中的xxx名称一致，否则模型数据和错误信息都绑定不到。即会显示模型对应属性的错误信息，当path=*时则显示模型全部属性的错误信息。下面是主要的验证注解及说明：注解适用的数据类型说明AssertFalseBoolean, boolean验证注解的元素值是falseAssertTrueBoolean, boolean验证注解的元素值是trueDecimalMax（value=x）BigDecimal, BigInteger, String, byte,short, int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of Number andCharSequence.验证注解的元素值小于等于 DecimalMax指定的value值DecimalMin（value=x）BigDecimal, BigInteger, String, byte,short, int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of Number andCharSequence.验证注解的元素值小于等于 DecimalMin指定的value值Digits(integer=整数位数, fraction=小数位数)BigDecimal, BigInteger, String, byte,short, int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of Number andCharSequence.验证注解的元素值的整数位数和小数位数上限Futurejava.util.Date, java.util.Calendar; Additionally supported by HV, if theJoda Time date/time API is on the class path: any implementations ofReadablePartial andReadableInstant.验证注解的元素值（日期类型）比当前时间晚Max（value=x）BigDecimal, BigInteger, byte, short,int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type ofCharSequence (the numeric value represented by the character sequence is evaluated), any sub-type of Number.验证注解的元素值小于等于Max指定的value值Min（value=x）BigDecimal, BigInteger, byte, short,int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of CharSequence (the numeric value represented by the char sequence is evaluated), any sub-type of Number.验证注解的元素值大于等于Min指定的value值NotNullAny type验证注解的元素值不是nullNullAny type验证注解的元素值是nullPastjava.util.Date, java.util.Calendar; Additionally supported by HV, if theJoda Time date/time API is on the class path: any implementations ofReadablePartial andReadableInstant.验证注解的元素值（日期类型）比当前时间早Pattern(regex=正则表达式, flag=)String. Additionally supported by HV: any sub-type of CharSequence.验证注解的元素值与指定的正则表达式匹配Size(min=最小值, max=最大值)String, Collection, Map and arrays. Additionally supported by HV: any sub-type of CharSequence.验证注解的元素值的在min和max（包含）指定区间之内，如字符长度、集合大小ValidAny non-primitive type（引用类型）验证关联的对象，如账户对象里有一个订单对象，指定验证订单对象NotEmptyCharSequence,Collection, Map and Arrays验证注解的元素值不为null且不为空（字符串长度不为0、集合大小不为0）Range(min=最小值, max=最大值)CharSequence, Collection, Map and Arrays,BigDecimal, BigInteger, CharSequence, byte, short, i