Question

我正在关注这个问题---＆gt; Spring MVC: How to perform validation?

这是我的控制器代码

   @RequestMapping(value = "saveBankDetails.htm", method = RequestMethod.POST)
   public ModelAndView saveBankDetails(ModelMap model ,@Valid @ModelAttribute("SpringWeb")BankDetails bean, 
           BindingResult result){
               System.out.println(result.hasErrors());
               System.out.println(bean.getNoOfBankDetails());
               System.out.println(bean.getBankDetails().get(0).getNameOfBank());
                if(result.hasErrors())
                {
                    return new ModelAndView("error/error", "command",new String());
                }
                else{
                    return new ModelAndView("bankDetails/bankDetails", "command",bean);     
                }
   }

BankDetails bean包含EntityBankDetails的ArrayList。我已将验证应用于EntityBankDetail的字段，如图所示

public class EntityBankDetail {
    @NotNull
    @Size(max = 3)
    private String nameOfBank;
    private Double EMIforProposedLoan;
    private String nameOfBranch;
    private String accountType;
    private String accountNumber;
    private String applicantType;
//Getters and Setters
    }

我在BankDetail字段中输入超过3个字符这样我就可以在控制台上得到控制器的输出

false
3
fsdafsdfsdaf

为什么我的验证不起作用？我做错了什么？请建议..

编辑以包含BankDetailBean

/*
 * This class represent the entire Bank Details Page. It can contain 0-4 EntityBankDetais 
 * */
public class BankDetails {

    private ArrayList<EntityBankDetail> bankDetails;

    private String[] entities;
    @Size(max = 1)
    private int noOfBankDetails;

    public ArrayList<EntityBankDetail> getBankDetails() {
        return bankDetails;
    }
    public void setBankDetails(ArrayList<EntityBankDetail> bankDetails) {
        this.bankDetails = bankDetails;
    }
    public String[] getEntities() {
        return entities;
    }
    public void setEntities(String[] entities) {
        this.entities = entities;
    }
    public int getNoOfBankDetails() {
        return noOfBankDetails;
    }
    public void setNoOfBankDetails(int noOfBankDetails) {
        this.noOfBankDetails = noOfBankDetails;
    }
}

我在这个bean上遇到错误，无法解析Class EntityBankDetail的类型。两者都在同一个包中为什么会这样??

Answer 1

在使用spring-mvc时，应在应用程序上下文配置中指定<mvc:annotation-driven />，以便能够在控制器中使用JSR-303验证。或者，您可以配置LocalValidatorFactoryBean的实例并将其传递到<mvc:annotation-driven validator="yourValidator" />。

Spring MVC验证不起作用

1 个答案: