SpringMvc数据校验

initBinder进行数据校验

这样的验证可以指比对birthday这一项

填写完form表单后，进入此方法，便可进行出生日期的后台数据校验

xml文件同样

 

没有太多，主要是注解

二继承

此类

public class MyDateEditor extends PropertiesEditor {
    @Override
    //从网线打过来一个长得像日期的字符串   我，哦们     需要的是Date
    public void setAsText(String str) throws IllegalArgumentException {
        SimpleDateFormat sdf=getDate(str);
        Date date = null;
        try {
            date = sdf.parse(str);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        setValue(date);
    }
    public SimpleDateFormat getDate(String str) {
        SimpleDateFormat sdf=new SimpleDateFormat("yyyy年MM月dd日");
        //yyyy-MM-dd
        if (Pattern.matches("^\\d{4}-\\d{1,2}-\\d{2}$",str)){
            sdf=new SimpleDateFormat("yyyy-MM-dd");
        }
        if (Pattern.matches("^\\d{4}/\\d{1,2}/\\d{2}$",str)){
            sdf=new SimpleDateFormat("yyyy/MM/dd");
        }
        if (Pattern.matches("^\\d{4}\\d{1,2}\\d{2}$",str)){
            sdf=new SimpleDateFormat("yyyyMMdd");
        }
        return sdf;
    }

}

 

 这一种是继承propertiesEditor类即可

在建立实体类是我们就可以添加注解来进行数据校验

不过在此之前添加jar包

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>4.3.1.Final</version>
</dependency>

<!--validation api-->
<dependency>
    <groupId>javax.validation</groupId>
    <artifactId>validation-api</artifactId>
    <version>1.0.0.GA</version>
</dependency>

一个是hibernate，一个是validation

创建实体类

public class UserInfo {
    @NotEmpty(message = "用户名不能为空")
    @Size(min = 2,max = 10,message = "用户名的长度必须在{min}-{max}之间")
    private String username;

    @Max(value = 100,message = "最老100岁")
    @Min(value = 18,message = "最小18岁")
    private Integer userage;

    @NotNull(message = "出生日期不能为空")
    @DateTimeFormat(pattern = "yyyy/MM/dd")
    private Date birthday;


    @NotEmpty(message = "手机不能为空")
    @Pattern(regexp = "^1[3|5|7|9|8]\\d{9}$",message = "手机号码格式不正确")
    private String userphone;

    @NotEmpty(message = "邮箱不能为空") //yymqqc@126.com
    @Pattern(regexp = "^\\w+@\\w+\\.\\w+$",message = "邮箱格式不正确")
    private String email;


    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public Integer getUserage() {
        return userage;
    }

    public void setUserage(Integer userage) {
        this.userage = userage;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public String getUserphone() {
        return userphone;
    }

    public void setUserphone(String userphone) {
        this.userphone = userphone;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }
}

嗯，就是如此，以及xml配置文件的内容