https://github.com/javaobjects/demo_springmvc_validate
springMVC服务端数据校验如何实现
https://github.com/javaobjects/demo_springmvc_validate
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springMVC服务端数据校验如何实现
- Host: GitHub
- URL: https://github.com/javaobjects/demo_springmvc_validate
- Owner: javaobjects
- Created: 2019-06-25T02:33:54.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2019-06-25T12:10:04.000Z (over 6 years ago)
- Last Synced: 2025-01-28T03:17:17.011Z (11 months ago)
- Language: Java
- Size: 6.38 MB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# 64-Java-springMVC服务端数据校验如何实现?
1. 新建一个动态web工程 命名 **demo_springMVC_validate**
2. 导入对应的jar包并添加到内路径
3. 导入对应的配置文件
**springmvc-servlet.xml**
```
classpath:customerValidationMessages
```
**web.xml**
```
demo_springMVC_helloworld
springmvc
org.springframework.web.servlet.DispatcherServlet
springmvc
*.do
index.html
index.htm
index.jsp
default.html
default.htm
default.jsp
```
4. 新建包 **net.ptcs.demo.controller**
5. 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"%>
添加图书页面
${e.defaultMessage}
bookId:
bookName:
intoStoreTime:
publishName:
price:
```
此时报错信息如下：
```
Multiple annotations found at this line:
- The superclass "javax.servlet.http.HttpServlet" was not found on the Java
Build Path
- Line breakpoint:add_book.jsp [line: 1]
```
**解决方法：**
项目右键 ----> Configure Build Path -----> Java Build Path ---> Add Library ---> Server RunTime ----> Next ---> Apache Tomcat v8.0 ---> Finish ---> Apply ---> Apply and close
最后成功解决咯报错，如图所示
6. 新建一个 **Book** 实体类
```
package net.ptcs.demo.entity;
import java.util.Date;
import javax.validation.constraints.DecimalMin;
import javax.validation.constraints.Digits;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
public class Book {
/*bookId:非空校验，整数校验，大于0的校验
* bookName:非空校验，不能有非法字符（符合书名的正则表达式规范）
* intoStoreTime：非空校验
* publishName：非空校验，不能有非法字符（符合出版社名的正则表达式规范）
* price：非空校验，大于0，小数校验*/
@NotNull(message="{book.bookId.isNull}")
private Integer bookId;
@NotBlank(message="{book.bookName.isNull}")
@Size(min=3,max=40,message="{book.bookName.size}")
private String bookName;
@NotNull(message="{book.intoStoreTime.isNull}")
private Date intoStoreTime;
@NotBlank(message="{book.publishName.isNull}")
private String publishName;
@Pattern(regexp = "^1(3|4|5|7|8)\\d{9}$",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;
}
}
```
7. 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
*
Title: BookController
* Description:
* @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 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 "";
}
}
}
```
8. **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
```
9. 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 {
@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;
}
}
```
10. 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**
**以就就是我关于 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](https://github.com/javaobjects/demo_springMVC_validate)**
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