-
新建一个动态web工程 命名 demo_springMVC_validate
-
导入对应的jar包并添加到内路径
-
导入对应的配置文件
springmvc-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property> <!-- /WEB-INF/index.jsp -->
</bean>
<mvc:annotation-driven conversion-service="conversionService" validator="validator"></mvc:annotation-driven>
<!-- 定义校验器bean -->
<bean id="validator"
class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<property name="providerClass" value="org.hibernate.validator.HibernateValidator"></property>
<property name="validationMessageSource" ref="messageSource"></property>
</bean>
<!-- 定义校验出错的信息提示文件 -->
<bean id="messageSource"
class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basenames">
<list>
<value>classpath:customerValidationMessages</value>
</list>
</property>
<property name="fileEncodings" value="utf-8"></property>
</bean>
<bean id="conversionService"
class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<property name="converters">
<list>
<bean class="net.neuedu.demo.converter.CustomerDateConverter"></bean>
</list>
</property>
</bean>
<context:component-scan base-package="net.neuedu.demo.controller"></context:component-scan>
</beans>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
<display-name>demo_springMVC_helloworld</display-name>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>
-
新建包 net.ptcs.demo.controller
-
新建Jsp页面 add_book.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>添加图书页面</title>
</head>
<body>
<form action="<%=request.getContextPath()%>/book/addBook.do"
method="post">
<c:if test="${errors!=null}">
<c:forEach items="${errors}" var="e">
${e.defaultMessage}<br>
</c:forEach>
</c:if>
bookId:<input type="text" name="bookId" /><br> bookName:<input
type="text" name="bookName" /><br> intoStoreTime:<input
type="text" name="intoStoreTime" /><br> publishName:<input
type="text" name="publishName" /><br> price:<input type="text"
name="price" /><br> <input type="submit" value="添加" />
</form>
</body>
</html>
此时报错信息如下：
Multiple annotations found at this line:
- The superclass "javax.servlet.http.HttpServlet" was not found on the Java
Build Path
- Line breakpoint:add_book.jsp [line: 1]
解决方法：
项目右键 ----> Configure Build Path -----> Java Build Path ---> Add Library ---> Server RunTime ----> Next ---> Apache Tomcat v8.0 ---> Finish ---> Apply ---> Apply and close
最后成功解决咯报错，如图所示
- 新建一个 Book 实体类
package net.ptcs.demo.entity;
import java.util.Date;
import javax.validation.constraints.DecimalMin;
import javax.validation.constraints.Digits;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
public class Book {
/*bookId:非空校验，整数校验，大于0的校验
* bookName:非空校验，不能有非法字符（符合书名的正则表达式规范）
* intoStoreTime：非空校验
* publishName：非空校验，不能有非法字符（符合出版社名的正则表达式规范）
* price：非空校验，大于0，小数校验*/
@NotNull(message="{book.bookId.isNull}")
private Integer bookId;
@NotBlank(message="{book.bookName.isNull}")
@Size(min=3,max=40,message="{book.bookName.size}")
private String bookName;
@NotNull(message="{book.intoStoreTime.isNull}")
private Date intoStoreTime;
@NotBlank(message="{book.publishName.isNull}")
private String publishName;
@Pattern(regexp = "^1(3|4|5|7|8)\\d{9}$",message = "手机号码格式错误")
@NotBlank(message = "手机号码不能为空")
private String phone;
@NotNull(message="{book.price.isNull}")//对于数字校验是否为空使用@NotNull,String类型使用@NotBlank list类型使用@NotEmpty
@Digits(fraction = 2, integer = 100, message="{book.price.error}")//对于小数进行校验，限定整数数位integer和小数数位fraction
@DecimalMin(value = "0", message="{book.price.value}")//对值进行校验，必须大于等于value的值
private Double price;
public Book() {
super();
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
@Override
public String toString() {
return "Book [bookId=" + bookId + ", bookName=" + bookName
+ ", intoStoreTime=" + intoStoreTime + ", publishName="
+ publishName + ", price=" + price + "]";
}
public Book(Integer bookId, String bookName, Date intoStoreTime,
String publishName, Double price) {
super();
this.bookId = bookId;
this.bookName = bookName;
this.intoStoreTime = intoStoreTime;
this.publishName = publishName;
this.price = price;
}
public Integer getBookId() {
return bookId;
}
public void setBookId(Integer bookId) {
this.bookId = bookId;
}
public String getBookName() {
return bookName;
}
public void setBookName(String bookName) {
this.bookName = bookName;
}
public Date getIntoStoreTime() {
return intoStoreTime;
}
public void setIntoStoreTime(Date intoStoreTime) {
this.intoStoreTime = intoStoreTime;
}
public String getPublishName() {
return publishName;
}
public void setPublishName(String publishName) {
this.publishName = publishName;
}
public Double getPrice() {
return price;
}
public void setPrice(Double price) {
this.price = price;
}
}
- 在 net.ptcs.demo.controller 内下新建 BookController类
package net.ptcs.demo.controller;
import java.util.List;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.ObjectError;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.RequestMapping;
import net.ptcs.demo.entity.Book;
/**
* 图书管理模块的控制器，也叫做处理器
* <p>Title: BookController</p>
* <p>Description: </p>
* @author xianxian
* @date 2019年6月25日
*/
@Controller
@RequestMapping("book")
public class BookController {
/**
* use:处理页面添加图书的请求
*
* 今天我们的需求：
* 1.在处理添加图书请求前对book对象中的属性进行校验：
* bookId:非空校验，整数校验，大于0的校验
* bookName:非空校验，不能有非法字符（符合书名的正则表达式规范）
* intoStoreTime：非空校验
* publishName：非空校验，不能有非法字符（符合出版社名的正则表达式规范）
* price：非空校验，大于0，小数校验
*
* 2.校验的时机：addBook方法调用之前校验，如果校验通过那么继续，没有通过那么返回页面，提示出错信息
*
* @param book
* @return
*/
@RequestMapping("addBook.do")
public String addBook(@Validated Book book,BindingResult bindingResult,Model model)
{
List<ObjectError> errors=bindingResult.getAllErrors();
if(errors.size()>0)
{
//校验失败
// 把出错信息传给页面
model.addAttribute("errors", errors);
model.addAttribute("book", book);
return "add_book";// /+add_book+.jsp
}else
{
//校验成功
System.out.println("into addBook()方法。。。。。");
System.out.println("book:"+book);
return "";
}
}
}
- src 目录下新建一个 customerValidationMessages.properties
book.bookId.isNull=\u56FE\u4E66\u7F16\u53F7\u4E0D\u80FD\u4E3A\u7A7A
book.bookName.isNull=\u56FE\u4E66\u540D\u79F0\u4E0D\u80FD\u4E3A\u7A7A
book.intoStoreTime.isNull=\u5165\u5E93\u65F6\u95F4\u4E0D\u80FD\u4E3A\u7A7A
book.publishName.isNull=\u51FA\u7248\u793E\u540D\u79F0\u4E0D\u80FD\u4E3A\u7A7A
book.price.isNull=\u4EF7\u683C\u4E0D\u80FD\u4E3A\u7A7A
book.bookName.size=\u56FE\u4E66\u540D\u79F0\u957F\u5EA6\u6700\u5C0F\u662F3\uFF0C\u6700\u5927\u662F40
book.price.isNull=\u4E66\u7684\u4EF7\u683C\u4E0D\u80FD\u4E3A\u7A7A
book.price.error=\u4E66\u7684\u4EF7\u683C\u683C\u5F0F\u9519\u8BEF
book.price.value=\u4E66\u7684\u4EF7\u683C\u5FC5\u987B\u5927\u4E8E0
- 新建 net.ptcs.demo.converter 包下的 CustomerDateConverter 类
package net.ptcs.demo.converter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.springframework.core.convert.converter.Converter;
public class CustomerDateConverter implements Converter<String,Date> {
@Override
public Date convert(String source) {
Date date=null;
if(source!=null && !"".equals(source))
{
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
try {
date=sdf.parse(source);
} catch (ParseException e) {
e.printStackTrace();
}
}
return date;
}
}
- 运行并测试
出现如下报错：
原因：
springmvc-servlet.xml 中的 value 值与配置文件名不一致
解决：
将这两名字更改为统一
如图所示，测试成功
以上就是我关于 Java-springMVC服务端数据校验如何实现? 知识点的整理与总结的全部内容 另附源码链接
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