Spring portlet:param未评估EL标记

试图为SpringMVCPortlet:ActionUrlPortlet:param设置值，但由于某些原因EL没有解析JSTL。有关Message.java和MessageForm.java以及Message.java的详细信息，请参见下文。java实现了equals（）和hascode（），在WebSphere Portal Server v8.0和JDK 1.6中作为Spring MVC Portlet运行

这是我的JSP：

<c:forEach items="${messageForm.messageList}" var="message" varStatus="status">   
      <HTMLWRAPPER name="Message_Repeat">
      <tr sequence_class="tableRowPrimary,tableRowAlternate">                   
        <td class="descriptionCell" width="150" align="Center"><form:hidden path="messageList[${status.index}].subject"/>
        <a href='
            <portlet:actionURL>
            <portlet:param name="action" value="detail"/>
            <portlet:param name="id" value="${message.id}"/>                                            
            </portlet:actionURL>'><c:out value="${message.subject}"/></a>
       </td>                                
      </tr>
      </HTMLWRAPPER> 
   </c:forEach>

---

使用Spring MVC portlet v3.2.8及以下是标记库：

<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>

---

Message.java

public class Message implements Serializable {
    private static final long serialVersionUID = 1L;
    Integer id;
    String type;
    String subject;
    String receiveDate;
    String expireDate;
    boolean readFlag;
    boolean deleteFlag;
    String body;
    ArrayList<Attachment> attachmentList;
    Integer attachmentCount;
    String toAddress;
    String fromAddress = "From Online";

    public String getToAddress() {
        return toAddress;
    }


    public void setToAddress(String toAddress) {
        this.toAddress = toAddress;
    }

    public String getFromAddress() {
        return fromAddress;
    }

    public void setFromAddress(String fromAddress) {
        this.fromAddress = fromAddress;
    }   

    public ArrayList<Attachment> getAttachmentList() {
        return attachmentList;
    }

    public void setAttachmentList(ArrayList<Attachment> attachmentList) {
        this.attachmentList = attachmentList;
    }

    public String getBody() {
        return body;
    }

    public void setBody(String body) {
        this.body = body;
    }

    public Integer getAttachmentCount() {
        return attachmentCount;
    }

    public void setAttachmentCount(Integer attachmentCount) {
        this.attachmentCount = attachmentCount;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getSubject() {
        return subject;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    public String getReceiveDate() {
        return receiveDate;
    }

    public void setReceiveDate(String receiveDate) {
        this.receiveDate = receiveDate;
    }

    public String getExpireDate() {
        return expireDate;
    }

    public void setExpireDate(String expireDate) {
        this.expireDate = expireDate;
    }

    public boolean isDeleteFlag() {
        return deleteFlag;
    }

    public void setDeleteFlag(boolean deleteFlag) {
        this.deleteFlag = deleteFlag;
    }   

    public boolean isReadFlag() {
        return readFlag;
    }

    public void setReadFlag(boolean readFlag) {
        this.readFlag = readFlag;
    }

    @Override
    public boolean equals(Object object) {
        boolean result = false;
        if (object == null || object.getClass() != getClass()) {
            result = false;
        } else {
            Message message = (Message) object;
            if (this.getType() == message.getType()
                    && this.getId() == message.getId()) {
                result = true;
            }
        }
        return result;
    }

    @Override
    public int hashCode() {
        int hash = 3;
        hash = 7 * hash + this.id.hashCode();
        hash = 7 * hash + this.subject.hashCode();
        return hash;
    }
}

public class MessageForm implements Serializable {
    private static final long serialVersionUID = 1L;    

    public ArrayList<Message> messageList = new ArrayList<Message>();

    public String delMsgConf;   

    public String getDelMsgConf() {
        return delMsgConf;
    }

    public void setDelMsgConf(String delMsgConf) {
        this.delMsgConf = delMsgConf;
    }

    public ArrayList<Message> getMessageList() {
        return messageList;
    }

    public void setMessageList(ArrayList<Message> messageList) {
        this.messageList = messageList;
    }
}

公共类消息实现可序列化{
私有静态最终长serialVersionUID=1L；
整数id；
字符串类型；
字符串主题；
字符串receiveDate；
字符串过期；
布尔读取标志；
布尔删除标志；
弦体；
ArrayList附件列表；
整数attachmentCount；
字符串地址；
字符串fromAddress=“From Online”；
公共字符串getToAddress（）{
返回地址；
}
public void setToAddress（字符串toAddress）{
this.toAddress=toAddress；
}
公共字符串getFromAddress（）{
从地址返回；
}
公共void setFromAddress（字符串fromAddress）{
this.fromAddress=fromAddress；
}   
公共阵列列表getAttachmentList（）{
返回附件列表；
}
public void setAttachmentList（ArrayList attachmentList）{
this.attachmentList=attachmentList；
}
公共字符串getBody（）{
返回体；
}
公共体（字符串体）{
这个身体=身体；
}
公共整数getAttachmentCount（）{
返回attachmentCount；
}
public void setAttachmentCount（整数attachmentCount）{
this.attachmentCount=attachmentCount；
}
公共整数getId（）{
返回id；
}
公共无效集合id（整数id）{
this.id=id；
}
公共字符串getType（）{
返回类型；
}
公共void集合类型（字符串类型）{
this.type=type；
}
公共字符串getSubject（）{
返回主题；
}
public void setSubject（字符串主题）{
this.subject=主语；
}
公共字符串getReceiveDate（）{
返回接收日期；
}
public void setReceiveDate（字符串receiveDate）{
this.receiveDate=receiveDate；
}
公共字符串getExpireDate（）{
返回到期日期；
}
公共void setExpireDate（字符串expireDate）{
this.expireDate=过期日期；
}
公共布尔值isDeleteFlag（）{
返回删除标志；
}
公共void setDeleteFlag（布尔deleteFlag）{
this.deleteFlag=deleteFlag；
}   
公共布尔值isReadFlag（）{
返回readFlag；
}
公共无效setReadFlag（布尔readFlag）{
this.readFlag=readFlag；
}
@凌驾
公共布尔等于（对象）{
布尔结果=假；
if（object==null | | object.getClass（）！=getClass（））{
结果=假；
}否则{
Message=（Message）对象；
if（this.getType（）==message.getType（））
&&this.getId（）==message.getId（））{
结果=真；
}
}
返回结果；
}
@凌驾
公共int hashCode（）{
int hash=3；
hash=7*hash+this.id.hashCode（）；
hash=7*hash+this.subject.hashCode（）；
返回散列；
}
}

---

MessageForm.java

public class Message implements Serializable {
    private static final long serialVersionUID = 1L;
    Integer id;
    String type;
    String subject;
    String receiveDate;
    String expireDate;
    boolean readFlag;
    boolean deleteFlag;
    String body;
    ArrayList<Attachment> attachmentList;
    Integer attachmentCount;
    String toAddress;
    String fromAddress = "From Online";

    public String getToAddress() {
        return toAddress;
    }


    public void setToAddress(String toAddress) {
        this.toAddress = toAddress;
    }

    public String getFromAddress() {
        return fromAddress;
    }

    public void setFromAddress(String fromAddress) {
        this.fromAddress = fromAddress;
    }   

    public ArrayList<Attachment> getAttachmentList() {
        return attachmentList;
    }

    public void setAttachmentList(ArrayList<Attachment> attachmentList) {
        this.attachmentList = attachmentList;
    }

    public String getBody() {
        return body;
    }

    public void setBody(String body) {
        this.body = body;
    }

    public Integer getAttachmentCount() {
        return attachmentCount;
    }

    public void setAttachmentCount(Integer attachmentCount) {
        this.attachmentCount = attachmentCount;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getSubject() {
        return subject;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    public String getReceiveDate() {
        return receiveDate;
    }

    public void setReceiveDate(String receiveDate) {
        this.receiveDate = receiveDate;
    }

    public String getExpireDate() {
        return expireDate;
    }

    public void setExpireDate(String expireDate) {
        this.expireDate = expireDate;
    }

    public boolean isDeleteFlag() {
        return deleteFlag;
    }

    public void setDeleteFlag(boolean deleteFlag) {
        this.deleteFlag = deleteFlag;
    }   

    public boolean isReadFlag() {
        return readFlag;
    }

    public void setReadFlag(boolean readFlag) {
        this.readFlag = readFlag;
    }

    @Override
    public boolean equals(Object object) {
        boolean result = false;
        if (object == null || object.getClass() != getClass()) {
            result = false;
        } else {
            Message message = (Message) object;
            if (this.getType() == message.getType()
                    && this.getId() == message.getId()) {
                result = true;
            }
        }
        return result;
    }

    @Override
    public int hashCode() {
        int hash = 3;
        hash = 7 * hash + this.id.hashCode();
        hash = 7 * hash + this.subject.hashCode();
        return hash;
    }
}

public class MessageForm implements Serializable {
    private static final long serialVersionUID = 1L;    

    public ArrayList<Message> messageList = new ArrayList<Message>();

    public String delMsgConf;   

    public String getDelMsgConf() {
        return delMsgConf;
    }

    public void setDelMsgConf(String delMsgConf) {
        this.delMsgConf = delMsgConf;
    }

    public ArrayList<Message> getMessageList() {
        return messageList;
    }

    public void setMessageList(ArrayList<Message> messageList) {
        this.messageList = messageList;
    }
}

public类MessageForm实现可序列化{
私有静态最终长serialVersionUID=1L；
public ArrayList messageList=new ArrayList（）；
公共字符串delMsgConf；
公共字符串getDelMsgConf（）{
返回delMsgConf；
}
公共void setDelMsgConf（字符串delMsgConf）{
this.delMsgConf=delMsgConf；
}
公共阵列列表getMessageList（）{
返回消息列表；
}
public void setMessageList（ArrayList messageList）{
this.messageList=messageList；
}
}

---

这是控制器：

@ActionMapping(params = "action=detail")
    public void detailMessage(@ModelAttribute("messageForm") MessageForm messageForm, BindingResult result, Model model,@RequestParam(required=false, value="id") String id, ActionRequest actionRequest,ActionResponse actionResponse) throws Exception {
        ArrayList<Message> messages = messageForm.getMessageList();
        HttpServletRequest servletRequest = PortletUtils.getHttpServletRequest(actionRequest);
        String sessionId = servletRequest.getSession().getId();
        String messageId = actionRequest.getParameter("id");

@ActionMapping（params=“action=detail”）
public void detailMessage（@modeldattribute（“messageForm”）messageForm messageForm，BindingResult，Model Model，@RequestParam（required=false，value=“id”）字符串id，ActionRequest ActionRequest，ActionResponse ActionResponse）引发异常{
ArrayList messages=messageForm.getMessageList（）；
HttpServletRequest-servletRequest=PortletUtils.getHttpServletRequest（actionRequest）；
字符串sessionId=servletRequest.getSession（）.getId（）；
字符串messageId=actionRequest.getParameter（“id”）；

---

当打印出

messageId

时，它只显示

${message.id}

作为值-知道我做错了什么吗？

你能粘贴

MessageForm

和

Message

java类代码吗，我认为

messageList

类包含

Message

对象的列表。在

Message

类中是否有类似

getId

的方法？。Thanks@grek，那

${message.subject}

它会计算吗？@PrakashK-是的，ArrayList messageList是MessageForm。message.java中有一个方法getId（）{return id；}@Arvind谢谢您的输入。它也不会计算…只需打印${message.subject}@grek，我想EL在jsp中被忽略了，无论是在jsp还是在web.xml，请检查jsp属性，

isaligned