@RequestMapping(value="/ajax/saveVendor.do",method = RequestMethod.POST)
public @ResponseBody AjaxResponse saveVendor( @Valid UIVendor vendor,BindingResult result,Locale currentLocale )

当以JSON格式查看时，UIVendor对象如下所示：

var vendor = 
{
  vendorId: 123,vendorName: "ABC Company",emails : [
             { emailAddress: "abc123@abc.com",flags: 2 },{ emailAddress: "xyz@abc.com",flags: 3 }
           ]
}

UIVendor bean有一个名为“Emails”的字段，类型为ArrayList，带有适当的setter和getter(getEmails / setEmails)。 NotificationEmail对象也具有适当的公共setter / getter。

当我尝试使用以下代码发布对象时：

$.post("ajax/saveVendor.do",$.param(vendor),saveEntityCallback,"json" );

我在日志中收到此错误：

Invalid property 'emails[0][emailAddress]' of bean class [beans.UIVendor]: Property referenced in indexed property path 'emails[0][emailAddress]' is neither an array nor a List nor a Map; returned value was [abc123@abc.com]

如何正确地将这样的嵌套对象发布到Spring控制器并将其正确地反序列化到适当的对象结构中。

UPDATE
根据Per Bohzo的要求，这里是UIVendor类的内容。此类包装Web服务生成的bean类，将VendorAttributes作为单独的字段公开：

package com.mycompany.beans;
 
import java.util.*;
import org.apache.commons.lang.*;
import com.mycompany.domain.Vendor;
import com.mycompany.domain.VendorAttributes;
import org.apache.commons.logging.*;
import org.codehaus.jackson.annotate.JsonIgnore;
 
public class UIVendor
{
  private final Log logger = LogFactory.getLog( this.getClass() );
  private Vendor vendor;
  private boolean ftpFlag;
  private String ftpHost;
  private String ftpPath;
  private String ftpUser;
  private String ftpPassword; 
  private List<UINotificationEmail> emails = null;
 
  public UIVendor() { this( new Vendor() ); }
  public UIVendor( Vendor vendor )
  {
    this.vendor = vendor;
    loadVendorAttributes();
  }
 
  private void loadVendorAttributes()
  {
    this.ftpFlag = false;
    this.ftpHost = this.ftpPassword = this.ftpPath = this.ftpUser = "";
    this.emails = null;
 
    for ( VendorAttributes a : this.vendor.getVendorAttributes() )
    {
      String key = a.getVendorFakey();
      String value = a.getVendorFaValue();
      int flags = a.getFlags();
 
      if ( StringUtils.isBlank(key) || StringUtils.isBlank(value) ) continue;
 
      if ( key.equals( "ftpFlag" ) )
      {
        this.ftpFlag = BooleanUtils.toBoolean( value );
      }
      else if ( key.equals( "ftpHost" ) )
      {
        this.ftpHost = value;
      }
      else if ( key.equals("ftpPath") )
      {
        this.ftpPath = value;
      }
      else if ( key.equals("ftpUser") )
      {
        this.ftpUser = value;
      }
      else if ( key.equals("ftpPassword") )
      {
        this.ftpPassword = value;
      }
      else if ( key.equals("email") )
      {
        UINotificationEmail email = new UINotificationEmail(value,flags);
        this.getEmails().add( email );
      }
    }
  }
 
  private void saveVendorAttributes()
  {
    int id = this.vendor.getVendorId();
    List<VendorAttributes> attrs = this.vendor.getVendorAttributes();
    attrs.clear();
 
    if ( this.ftpFlag )
    {      
      VendorAttributes flag = new VendorAttributes();
      flag.setVendorId( id );
      flag.setStatus( "A" );
      flag.setVendorFakey( "ftpFlag" );
      flag.setVendorFaValue( BooleanUtils.toStringTrueFalse( this.ftpFlag ) );
      attrs.add( flag );
 
      if ( StringUtils.isNotBlank( this.ftpHost ) )
      {
        VendorAttributes host = new VendorAttributes();
        host.setVendorId( id );
        host.setStatus( "A" );
        host.setVendorFakey( "ftpHost" );
        host.setVendorFaValue( this.ftpHost );
        attrs.add( host );
 
        if ( StringUtils.isNotBlank( this.ftpPath ) )
        {
          VendorAttributes path = new VendorAttributes();
          path.setVendorId( id );
          path.setStatus( "A" );
          path.setVendorFakey( "ftpPath" );
          path.setVendorFaValue( this.ftpPath );
          attrs.add( path );
        }
 
        if ( StringUtils.isNotBlank( this.ftpUser ) )
        {
          VendorAttributes user = new VendorAttributes();
          user.setVendorId( id );
          user.setStatus( "A" );
          user.setVendorFakey( "ftpUser" );
          user.setVendorFaValue( this.ftpUser );
          attrs.add( user );
        }
 
        if ( StringUtils.isNotBlank( this.ftpPassword ) )
        {
          VendorAttributes password = new VendorAttributes();
          password.setVendorId( id );
          password.setStatus( "A" );
          password.setVendorFakey( "ftpPassword" );
          password.setVendorFaValue( this.ftpPassword ); 
          attrs.add( password );
        }
      }      
    }
 
    for ( UINotificationEmail e : this.getEmails() )
    {
      logger.debug("Adding email " + e );
      VendorAttributes email = new VendorAttributes();
      email.setStatus( "A" );
      email.setVendorFakey( "email" );
      email.setVendorFaValue( e.getEmailAddress() );
      email.setFlags( e.getFlags() );
      email.setVendorId( id );
      attrs.add( email );
    }
  }
 
  @JsonIgnore
  public Vendor getVendor()
  {
    saveVendorAttributes();
    return this.vendor;
  }
 
  public int getVendorId()
  {
    return this.vendor.getVendorId();
  }
  public void setVendorId( int vendorId )
  {
    this.vendor.setVendorId( vendorId );
  }
 
  public String getVendorType()
  {
    return this.vendor.getVendorType();
  }
  public void setVendorType( String vendorType )
  {
    this.vendor.setVendorType( vendorType );
  }
 
  public String getVendorName()
  {
    return this.vendor.getVendorName();
  }
  public void setVendorName( String vendorName )
  {
    this.vendor.setVendorName( vendorName );
  }
 
  public String getStatus()
  {
    return this.vendor.getStatus();
  }
  public void setStatus( String status )
  {
    this.vendor.setStatus( status );
  }
 
  public boolean isFtpFlag()
  {
    return this.ftpFlag;
  }
  public void setFtpFlag( boolean ftpFlag )
  {
    this.ftpFlag = ftpFlag;
  }
 
  public String getFtpHost()
  {
    return this.ftpHost;
  }
  public void setFtpHost( String ftpHost )
  {
    this.ftpHost = ftpHost;
  }
 
  public String getFtpPath()
  {
    return this.ftpPath;
  }
  public void setFtpPath( String ftpPath )
  {
    this.ftpPath = ftpPath;
  }
 
  public String getFtpUser()
  {
    return this.ftpUser;
  }
  public void setFtpUser( String ftpUser )
  {
    this.ftpUser = ftpUser;
  }
 
  public String getFtpPassword()
  {
    return this.ftpPassword;
  }
  public void setFtpPassword( String ftpPassword )
  {
    this.ftpPassword = ftpPassword;
  }
 
  public List<UINotificationEmail> getEmails()
  {
    if ( this.emails == null )
    {
      this.emails = new ArrayList<UINotificationEmail>();
    }
    return emails;
  }
 
  public void setEmails(List<UINotificationEmail> emails)
  {
    this.emails = emails;
  }
}

更新2
这是杰克逊的输出：

{
  "vendorName":"MAIL","vendorId":45,"emails":
  [
    {
      "emailAddress":"dfg","success":false,"failure":false,"flags":0
    }
  ],"vendorType":"DFG","ftpFlag":true,"ftpHost":"kdsfjng","ftpPath":"dsfg","ftpUser":"sdfg","ftpPassword":"sdfg","status":"A"
}

这是我在POST上返回的对象的结构：

{
  "vendorId":"45","vendorName":"MAIL","status":"A","emails": 
            [
              {
                "success":"false","failure":"false","emailAddress":"dfg"
              },{
                "success":"true","failure":"true","emailAddress":"pfc@sj.org"
              }
            ]
}

我也尝试过使用www.json.org上的JSON库进行序列化，结果就是你在上面看到的。但是，当我发布该数据时，传递给控制器​​的UIVendor对象中的所有字段都为空(尽管该对象不是)。