[springmvc] Validation

Trigger validation by marking a JavaBean parameter as @Valid

　　The JavaBean will be passed to a Validator for validation

　　The JavaBean will be passed to a Validator for validation

Binding and validation errors can be trapped and introspected by declaring a BindingResult parameter

　　Must follow the JavaBean parameter in the method signature

　　Errors automatically exported in the model when rendering views

　　Not supported with other request parameter types (@RequestBody, etc)

    @RequestMapping("/validate")
public @ResponseBody String validate(@Valid JavaBean bean, BindingResult result) {
if (result.hasErrors()) {
return "Object has validation errors";
        } else {
return "No errors";
        }
    }

JavaBean.java

import java.util.Date;

import javax.validation.constraints.Future;
import javax.validation.constraints.Max;
import javax.validation.constraints.NotNull;

import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.format.annotation.DateTimeFormat.ISO;

public class JavaBean {

    @NotNull
    @Max(5)
private Integer number;

    @NotNull
    @Future
    @DateTimeFormat(iso=ISO.DATE)
private Date date;

public Integer getNumber() {
return number;
    }

public void setNumber(Integer number) {
this.number = number;
    }

public Date getDate() {
return date;
    }

public void setDate(Date date) {
this.date = date;
    }

}

　　

转载于:https://www.cnblogs.com/lavieenrose/archive/2012/03/26/2418801.html