no14-第十一章-后端数据校验

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分类： ssm 专栏： ssm框架课标签：服务端数据校验

2023-01-02 17:30:59 1415浏览

服务端数据校验

1.spring表单标签及数据校验

数据校验要引入的jar

hibernate-validator

jboss-logging

jakarta.validation-api

classmate

编写页面代码

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="fm" uri="http://www.springframework.org/tags/form" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="${pageContext.request.contextPath }/statics/calendar/WdatePicker.js"></script>
<title>Insert title here</title>
</head>
<body>
<fm:form method="post" modelAttribute="sysUser">
	<fm:errors path="account"/><br/>
	用户编码:<fm:input path="account"/><br/>
	<fm:errors path="realName"/><br/>
	用户名称:<fm:input path="realName"/><br/>
	<fm:errors path="password"/><br/>
	用户密码:<fm:password path="password"/><br/>
	<fm:errors path="birthday"/><br/>
	用户生日:<fm:input path="birthday" Class="Wdate" readonly="readonly" onclick="WdatePicker();" class="Wdate"/><br/>
	用户地址:<fm:input path="address"/><br/>
	联系电话:<fm:input path="phone"/><br/>
	用户角色:
	<fm:radiobutton path="roleId" value="1"/>系统管理员
	<fm:radiobutton path="roleId" value="2"/>经理
	<fm:radiobutton path="roleId" value="3" checked="checked"/>普通用户
	<br/>
	<input type="submit" value="保存"/>
</fm:form>

</body>
</html>

编写control代码

	/**
	 * 跳转到添加用户页面
	 * @param sysUser
	 * @return
	 */
	@GetMapping("/add")
	public String toAdd(@ModelAttribute("sysUser") SysUser sysUser){
		return "sysUser/add";
	}


	/**
	 * 添加用户
	 * @param sysUser
	 * @param session
	 * @return
	 */
	@PostMapping("/add")
	public String add(@Valid SysUser sysUser, BindingResult bindingResult , HttpSession session){
		if(bindingResult.hasErrors()){
			logger.debug("添加用户验证失败");
			return "sysUser/add";
		}
		sysUser.setCreatedUserId(((SysUser)session.getAttribute(Constants.USER_SESSION)).getId());
		if(sysUserService.add(sysUser)){
			return "redirect:/user/list";
		}
		return "sysUser/add";
	}

备注：@Valid和BindingResult必须紧紧挨着。

修改实体类代码

public class SysUser {
	private Integer id; 				//id
	@NotBlank(message = "用户编码不能为空")
	private String account; //用户编码
	@NotBlank(message = "用户名称不能为空")
	private String realName; //用户名称

	@NotBlank(message = "用户密码不能为空")
//	@Min(value = 3,message = "不能少于3个字符")
//	@Max(value = 10,message = "不能多于10个字符")
	@Length(min = 3,max = 10,message = "用户密码长度不能少于{min}个字符不能多于{max}个字符")
	private String password; //用户密码
	private Integer sex;  //性别

	@DateTimeFormat(pattern = "yyyy-MM-dd")
	@Past(message = "日期必须是过去的时间")
	@NotNull(message = "出生日期必填")
	private Date birthday;  //出生日期

	@Pattern(regexp = "^1[35789]{1}\\d{9}$",message = "手机号格式不对")
	private String phone;   //电话
	@NotBlank(message = "地址不能为空")
	private String address; //地址

补充：实际开发一般不用spring标签，那传统的form表单如何校验？

@PostMapping("/add")
public String add(@Valid User sysUser, BindingResult bindingResult , HttpSession session,HttpServletRequest request){
    if(bindingResult.hasErrors()){
        List<FieldError> fieldErrors = bindingResult.getFieldErrors();
        for(FieldError fieldError : fieldErrors){
            request.setAttribute(fieldError.getField(),fieldError.getDefaultMessage());//然后前端el表达式展示下就行
        }

        return "useradd";
    }
    sysUser.setCreatedBy(((User)session.getAttribute(Constants.USER_SESSION)).getId());
    if(userService.add(sysUser)){
        return "redirect:/user/list";
    }
    return "useradd";
}