一：校验
1.校验的步骤
使用JSP 303验证标准
加入Hibernate validator的jar
在springmvc配置文件中加入<mvc:annotation-driven/>
需要在bean的属性上添加@Valid注解
2.添加lib
hibernate的lib
然后需要添加hibernate需要的required中的lib包
3.添加验证的注解
1 package com.spring.it.enties; 2 3 import java.util.Date; 4 5 import javax.validation.constraints.Past; 6 7 import org.hibernate.validator.constraints.Email; 8 import org.hibernate.validator.constraints.NotEmpty; 9 import org.springframework.format.annotation.DateTimeFormat; 10 import org.springframework.format.annotation.NumberFormat; 11 12 public class Employee { 13 14 private Integer id; 15 @NotEmpty 16 private String lastName; 17 @Email 18 private String email; 19 //1 male, 0 female 20 private Integer gender; 21 private Department department; 22 //birth 23 @Past 24 @DateTimeFormat(pattern="yyyy-MM-dd") 25 private Date birth; 26 //salary 27 @NumberFormat(pattern="###.#") 28 private Float salary; 29 30 public Employee(Integer id, String lastName, String email, Integer gender, 31 Department department) { 32 this.id = id; 33 this.lastName = lastName; 34 this.email = email; 35 this.gender = gender; 36 this.department = department; 37 } 38 39 public Employee() { 40 41 } 42 public Integer getId() { 43 return id; 44 } 45 46 public void setId(Integer id) { 47 this.id = id; 48 } 49 50 public String getLastName() { 51 return lastName; 52 } 53 54 public void setLastName(String lastName) { 55 this.lastName =lastName; 56 } 57 58 public String getEmail() { 59 return email; 60 } 61 62 public void setEmail(String email) { 63 this.email = email; 64 } 65 66 public Integer getGender() { 67 return gender; 68 } 69 70 public void setGender(Integer gender) { 71 this.gender = gender; 72 } 73 74 public Department getDepartment() { 75 return department; 76 } 77 78 public void setDepartment(Department department) { 79 this.department = department; 80 } 81 82 public Date getBirth() { 83 return birth; 84 } 85 86 public void setBirth(Date birth) { 87 this.birth = birth; 88 } 89 // 90 91 public Float getSalary() { 92 return salary; 93 } 94 95 public void setSalary(Float salary) { 96 this.salary = salary; 97 } 98 99 @Override 100 public String toString() { 101 return "Employee [id=" + id + ", lastName=" + lastName + ", email=" + email + ", gender=" + gender 102 + ", department=" + department + ", birth=" + birth + ", salary=" + salary + "]"; 103 } 104 105 }
4.保存上添加@Valid注解
1 /** 2 * 保存，是submit提交过来的请求，属于Post请求 3 */ 4 @RequestMapping(value="/emp",method=RequestMethod.POST) 5 public String save(@Valid Employee employee,BindingResult result) { 6 System.out.println(employee); 7 if(result.getErrorCount()>0) { 8 System.out.println("has error"); 9 for(FieldError error:result.getFieldErrors()) { 10 System.out.println(error.getField()+":"+error.getDefaultMessage()); 11 } 12 } 13 employeeDao.save(employee); 14 return "redirect:/emps"; 15 }
二：出错跳转页面
1.程序
这个主要的逻辑是save之后的处理。
要将department回显，所以save函数中要添加map。
1 /** 2 * 保存，是submit提交过来的请求，属于Post请求 3 */ 4 @RequestMapping(value="/emp",method=RequestMethod.POST) 5 public String save(@Valid Employee employee,BindingResult result,Map<String,Object> map) { 6 System.out.println(employee); 7 if(result.getErrorCount()>0) { 8 System.out.println("has error"); 9 for(FieldError error:result.getFieldErrors()) { 10 System.out.println(error.getField()+":"+error.getDefaultMessage()); 11 } 12 //如果出错，则转向定制的页面 13 map.put("department", departmentDao.getDepartments()); 14 return "input"; 15 } 16 employeeDao.save(employee); 17 return "redirect:/emps"; 18 }
2.效果
就是提交之后，还是这个页面
三：在页面上显示这个错误信息
1.input程序
在每一个要验证的字段后面写上：<form:errors path="birth"></form:errors><br>
1 <%@ page language="java" contentType="text/html; charset=utf-8" 2 pageEncoding="utf-8"%> 3 <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%> 4 <%@ page import="java.util.Map"%> 5 <%@ page import="java.util.HashMap"%> 6 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> 7 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 8 <html> 9 <head> 10 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 11 <title>Insert title here</title> 12 </head> 13 <body> 14 <form action="testConversionServiceConver" method="POST"> 15 16 <!-- lastname-email-gender-department.id --> 17 <!-- GG-gg@123.com-0-105 --> 18 Employee:<input type="text" name="employee"/> 19 <input type="submit" values="Submit"> 20 </form> 21 <br><br> 22 <br><br><br><br><br><br> 23 24 25 <!-- id lastName email gender department --> 26 <!-- modelAttribute默认的bean是command，需要改成对应的bean --> 27 <form:form action="${pageContext.request.contextPath}/emp" method="POST" modelAttribute="employee"> 28 <!-- lastName在修改的时候，不能被显示 --> 29 <c:if test="${employee.id == null}"> 30 LastName:<form:input path="lastName"/> 31 <form:errors path="lastName"></form:errors><br> 32 </c:if> 33 <c:if test="${employee.id != null}"> 34 <form:hidden path="id"/> 35 <!-- 不能使用form标签，因为modelAttribute对应的bean中没有_method这个属性，只能使用input --> 36 <input type="hidden" name="_method" value="PUT"/> 37 </c:if> 38 39 Email:<form:input path="email"/> 40 <form:errors path="email"></form:errors><br> 41 <% 42 Map<String,String> genders=new HashMap(); 43 genders.put("1", "Male"); 44 genders.put("0", "Female"); 45 request.setAttribute("genders", genders); 46 %> 47 Gender:<form:radiobuttons path="gender" items="${genders}"/><br> 48 Department:<form:select path="department.id" 49 items="${department}" itemLabel="departmentName" itemValue="id"></form:select><br> 50 51 <!-- 演示格式化 --> 52 Birth:<form:input path="birth"/> 53 <form:errors path="birth"></form:errors><br> 54 Salary:<form:input path="salary"/><br> 55 <input type="submit" values="Submit"> 56 </form:form> 57 </body> 58 </html>
2.效果
四：国际化资源文件
1.添加I18n.properties
注意写法：
1 NotEmpty.employee.lastName=\u4E0D\u80FD\u4E3A\u7A7A 2 Email.employee.email=\u4E0D\u662F\u5408\u6CD5\u7684\u90AE\u4EF6 3 Past.employee.birth=\u4E0D\u80FD\u662F\u672A\u6765\u7684\u4E00\u4E2A\u65F6\u95F4
2.springmvc.xml中配置国际化
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xmlns:mvc="http://www.springframework.org/schema/mvc" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans.xsd 8 http://www.springframework.org/schema/context 9 http://www.springframework.org/schema/context/spring-context-4.0.xsd 10 http://www.springframework.org/schema/mvc 11 http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> 12 <!-- 配置自定义扫描的包 --> 13 <context:component-scan base-package="com.spring.it" ></context:component-scan> 14 15 <!-- 配置视图解析器 --> 16 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 17 <property name="prefix" value="/WEB-INF/views/" /> 18 <property name="suffix" value=".jsp" /> 19 </bean> 20 21 <mvc:annotation-driven></mvc:annotation-driven> 22 23 <!-- 转换器 --> 24 <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"> 25 <property name="converters"> 26 <set> 27 <ref bean="employeeConverter"/> 28 </set> 29 </property> 30 </bean> 31 <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven> 32 33 <mvc:default-servlet-handler/> 34 <mvc:annotation-driven ignore-default-model-on-redirect="true"></mvc:annotation-driven> 35 36 <!-- 国家化 --> 37 <bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource"> 38 <property name="basename" value="i18n"></property> 39 </bean> 40 </beans>
3.效果
