Java jsp未显示spring验证程序错误
我正在使用SpringMVC创建一个项目。 我正在使用jsr303验证字段。 它在控制台中显示字段错误,但在jsp页面中显示错误,工作正常 有人能告诉我我在这里做错了什么吗 我的控制器方法是Java jsp未显示spring验证程序错误,java,spring,jsp,spring-mvc,Java,Spring,Jsp,Spring Mvc,我正在使用SpringMVC创建一个项目。 我正在使用jsr303验证字段。 它在控制台中显示字段错误,但在jsp页面中显示错误,工作正常 有人能告诉我我在这里做错了什么吗 我的控制器方法是 @RequestMapping(value="/addCampaign", method = RequestMethod.POST) public String processForm(@ModelAttribute(value="Campaign") @Valid CampaignEntity c
@RequestMapping(value="/addCampaign", method = RequestMethod.POST)
public String processForm(@ModelAttribute(value="Campaign") @Valid CampaignEntity campaignObj,BindingResult result, ModelMap model, Principal principal) {
validator.validate(campaignObj, result);
if(result.hasErrors()){
System.out.println(result.getErrorCount());
System.out.println(result.toString());
CampaignEntity campaignBean = new CampaignEntity();
Map<String,String> agencies = new LinkedHashMap<String,String>();
agencies.put("1", "United Stated");
agencies.put("2", "China");
agencies.put("3", "Singapore");
agencies.put("4", "Malaysia");
model.addAttribute("agencies", agencies);
model.addAttribute("publishers", agencies);
model.addAttribute("Campaign", campaignBean);
return "addCampaign";
}else{
return campaign(model, principal);
}
}
我的验证器类是
package com.nativeunlock.Validator;
import org.springframework.stereotype.Component;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;
import com.nativeunlock.dto.CampaignEntity;
@Component
public class CampaignValidator implements Validator{
@Override
public boolean supports(Class c) {
return CampaignEntity.class.isAssignableFrom(c);
}
@Override
public void validate(Object command, Errors errors) {
CampaignEntity campaignBean = (CampaignEntity)command;
/*if(!regBean.getPassword().equals(regBean.getRePassword()))
errors.rejectValue("rePassword","password.notmatch");*/
}
}
问题是,通过添加一个model属性
model.addAttribute(“Campaign”,campaitbean)代码>您正在从模型中删除绑定错误
绑定错误绑定到已验证的实例。如果将断点设置为方法内的第一行并检查模型,您将看到一个键为Campaign
的已验证对象,以及键为org.springframework.validation.BindingResult.Campaign
的绑定错误对象
当您进一步移动,并在“活动”键下向模型添加新实例时,请注意绑定错误将从模型中删除,因为它们绑定的实例不再存在,这就是为什么您在JSP中看不到它们的原因
删除model.addAttribute(“活动”,活动bean)
或更改键,您应该会看到绑定错误
也不是说您不需要手动调用validator.validate(活动对象,结果)代码>@Valid将为您调用验证在ErrorsTag(其方法和从基类继承的方法)上设置断点可能会help@JohnDonn:您能告诉我如何设置断点吗?我在控制器中遇到错误,我已经在控制台中打印了错误。如果您正在使用Eclipse,您应该按Ctrl+Shift+T并键入类ErrorsTag的名称;如果您有源代码,您将看到类源代码被打开。如果没有,您必须找到您的SpringMVCjar,并将从web下载的源代码与之关联。一旦源代码打开,您就可以使用与您自己的代码完全相同的方式设置断点。
package com.nativeunlock.dto;
import java.io.Serializable;
import java.util.Date;
import javax.persistence.*;
import javax.validation.constraints.Digits;
import javax.validation.constraints.NotNull;
import org.hibernate.validator.constraints.NotEmpty;
import lombok.Data;
import lombok.Getter;
import lombok.Setter;
@SuppressWarnings("serial")
@NamedQueries({
@NamedQuery(
name = CampaignEntity.GET_CAMPAIGNS_QUERY,
query = "from CampaignEntity campaign"
),
@NamedQuery(
name = CampaignEntity.DELETE_CAMPAIGNS_QUERY,
query = "DELETE FROM CampaignEntity campaign WHERE campaign.campaign_id = :campaign_id"
)
})
@Entity
@Table(name = "campaign")
public class CampaignEntity implements Serializable {
public static final String GET_CAMPAIGNS_QUERY ="getCampaignList";
public static final String DELETE_CAMPAIGNS_QUERY ="deleteCampaignList";
@Id
@Getter
@Setter
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "campaign_id", unique = true, nullable = false)
private int campaign_id;
@Getter
@Setter
@Column(name = "name", unique = true)
@NotEmpty(message="Name field is mandatory.")
private String name;
@Getter
@Setter
@Column(name = "no_of_views")
@NotNull(message="No. of Views field is mandatory.")
private int no_of_views;
@Getter
@Setter
@Column(name = "video_url")
@NotEmpty(message="Video URL field is mandatory.")
private String video_url;
@Getter
@Setter
@Column(name = "start_date")
@NotEmpty(message="Start Date field is mandatory.")
private String start_date;
@Getter
@Setter
@Column(name = "end_date")
@NotEmpty(message="End Date field is mandatory.")
private String end_date;
@Getter
@Setter
@Column(name = "click_to_play")
@NotNull(message="Click to play field is mandatory.")
private int click_to_play;
@Getter
@Setter
@Column(name = "frequency")
@NotNull(message="Frequency field is mandatory.")
private int frequency;
@Getter
@Setter
@Column(name = "priority")
@Digits(fraction = 0, integer = 100)
@NotNull(message="Priority field is mandatory.")
private int priority;
@Getter
@Setter
@Column(name = "divice")
@NotNull(message="Divice field is mandatory.")
private int divice;
@Getter
@Setter
@Column(name = "operating_system")
@NotNull(message="Operating system field is mandatory.")
private int operating_system;
@Getter
@Setter
@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "publisher_id")
@NotEmpty(message="Publisher field is mandatory.")
private PublisherEntity publishers;
@Getter
@Setter
@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "agency_id")
@NotEmpty(message="Agency field is mandatory.")
private AgencyEntity agencies;
}
package com.nativeunlock.Validator;
import org.springframework.stereotype.Component;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;
import com.nativeunlock.dto.CampaignEntity;
@Component
public class CampaignValidator implements Validator{
@Override
public boolean supports(Class c) {
return CampaignEntity.class.isAssignableFrom(c);
}
@Override
public void validate(Object command, Errors errors) {
CampaignEntity campaignBean = (CampaignEntity)command;
/*if(!regBean.getPassword().equals(regBean.getRePassword()))
errors.rejectValue("rePassword","password.notmatch");*/
}
}