Forms SpringMVC表单用法:单选按钮绑定数据(整个对象不只是一个值)
我在使用构造从JSP通过POST将数据发送到后端时遇到问题:Forms SpringMVC表单用法:单选按钮绑定数据(整个对象不只是一个值),forms,jsp,spring-mvc,radio-button,Forms,Jsp,Spring Mvc,Radio Button,我在使用构造从JSP通过POST将数据发送到后端时遇到问题: <form:radiobuttons path="pvClCategory" items="${categoryList}" itemLabel="clcaCategory"/> 我不知道如何查看发送的请求。当我使用下面的构造时,一切都很好,但我不想只绑定对象的一个值,而是绑定整个对象: <form:radiobuttons path="pvClCategory.clcaCategory" items="${cat
<form:radiobuttons path="pvClCategory" items="${categoryList}" itemLabel="clcaCategory"/>
我不知道如何查看发送的请求。当我使用下面的构造时,一切都很好,但我不想只绑定对象的一个值,而是绑定整个对象:
<form:radiobuttons path="pvClCategory.clcaCategory" items="${categoryList}" itemValue="clcaCategory" itemLabel="clcaCategory"/>
将其绑定到违例项所需的My ClCategory实体类。pvClCategory字段:
@Entity
@Table(name="PV_CL_CATEGORIES")
@Cache(usage=CacheConcurrencyStrategy.READ_ONLY)
public class ClCategory implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
@Column(name="CLCA_ID")
private long clcaId;
@Column(name="CLCA_CATEGORY")
private String clcaCategory;
@OneToMany(mappedBy="pvClCategory")
private List<Violation> pvViolations;
public ClCategory() {
}
public long getClcaId() {
return this.clcaId;
}
public void setClcaId(long clcaId) {
this.clcaId = clcaId;
}
public String getClcaCategory() {
return this.clcaCategory;
}
public void setClcaCategory(String clcaCategory) {
this.clcaCategory = clcaCategory;
}
public List<Violation> getPvViolations() {
return this.pvViolations;
}
public void setPvViolations(List<Violation> pvViolations) {
this.pvViolations = pvViolations;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + (int) (clcaId ^ (clcaId >>> 32));
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
ClCategory other = (ClCategory) obj;
if (clcaId != other.clcaId)
return false;
return true;
}
}
@实体
@表(name=“PV\U CL\U类别”)
@缓存(用法=缓存并发策略。只读)
公共类ClCategory实现了可序列化{
私有静态最终长serialVersionUID=1L;
@身份证
@GeneratedValue(策略=GenerationType.AUTO)
@列(name=“CLCA\u ID”)
私人长clcaId;
@列(name=“CLCA\U类别”)
私有字符串分类;
@OneToMany(mappedBy=“pvClCategory”)
私人名单;
公共类别(){
}
公共长getClcaId(){
返回此.clcaId;
}
公共无效设置clcaId(长clcaId){
this.clcaId=clcaId;
}
公共字符串getClcaCategory(){
返回此.clc类别;
}
公共无效集合类别(字符串类别){
this.clcaCategory=clcaCategory;
}
公共列表getPvViolations(){
返回此.pv文件;
}
public void setpvinflictions(列出pvinflictions){
this.pvinvolutions=pvinvolutions;
}
@凌驾
公共int hashCode(){
最终整数素数=31;
int结果=1;
结果=素数*结果+(int)(clcaId^(clcaId>>>32));
返回结果;
}
@凌驾
公共布尔等于(对象obj){
if(this==obj)
返回true;
if(obj==null)
返回false;
如果(getClass()!=obj.getClass())
返回false;
ClCategory other=(ClCategory)obj;
if(clcaId!=other.clcaId)
返回false;
返回true;
}
}
此违例类在commandName属性的我的表单中使用,如下所示(文件名:v.jsp):
申请
我的控制器:
@Controller
@RequestMapping("/viol")
public class ViolationController {
@RequestMapping("edit/{violationId}")
public String edit(@PathVariable("violationId") long id, Map<String, Object> map) {
Violation violation = violationService.getViolation(id);
map.put("violation",violation);
map.put("categoryList", adminService.listCategories());
return "v";
}
}
@控制器
@请求映射(“/viol”)
公共类违规控制员{
@RequestMapping(“编辑/{violationId}”)
公共字符串编辑(@PathVariable(“violationId”)长id,映射){
违规=违规服务。getViolation(id);
地图放置(“违反”,违反);
put(“categoryList”,adminService.listCategories());
返回“v”;
}
}
正如我在构造表单:radiobuttons path=”“items=“中所理解的,路径是数据绑定的属性,因此项目中交付列表中的整个对象都应该绑定到它。我将类别的项目列表放入ClCategory类型的对象中。提交后出现错误
当我使用form:radiobuttons path=“pvClCategory.clcaCategory”items=“${categoryList}”itemValue=“clcaCategory”itemLabel=“clcaCategory”仅绑定项中对象的字符串值时(在这两种情况下,使用类型为ClCategory的相同对象列表)然后表单被正确提交,但我不想只绑定objecte的一个值,而是绑定整个object。你能帮我一下我做错了什么吗
@Entity
@Table(name="PV_CL_CATEGORIES")
@Cache(usage=CacheConcurrencyStrategy.READ_ONLY)
public class ClCategory implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
@Column(name="CLCA_ID")
private long clcaId;
@Column(name="CLCA_CATEGORY")
private String clcaCategory;
@OneToMany(mappedBy="pvClCategory")
private List<Violation> pvViolations;
public ClCategory() {
}
public long getClcaId() {
return this.clcaId;
}
public void setClcaId(long clcaId) {
this.clcaId = clcaId;
}
public String getClcaCategory() {
return this.clcaCategory;
}
public void setClcaCategory(String clcaCategory) {
this.clcaCategory = clcaCategory;
}
public List<Violation> getPvViolations() {
return this.pvViolations;
}
public void setPvViolations(List<Violation> pvViolations) {
this.pvViolations = pvViolations;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + (int) (clcaId ^ (clcaId >>> 32));
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
ClCategory other = (ClCategory) obj;
if (clcaId != other.clcaId)
return false;
return true;
}
}
<form:form action="../update" method="post" commandName="violation">
<form:radiobuttons path="pvClCategory" items="${categoryList}" itemLabel="clcaCategory"/>
<!-- other fields -->
<button type="submit" value="Apply Changes" class="button-default" >Apply</button>
</form:form>
@Controller
@RequestMapping("/viol")
public class ViolationController {
@RequestMapping("edit/{violationId}")
public String edit(@PathVariable("violationId") long id, Map<String, Object> map) {
Violation violation = violationService.getViolation(id);
map.put("violation",violation);
map.put("categoryList", adminService.listCategories());
return "v";
}
}