问题描述

structs2刚开始学习，用json时，遇到了问题，希望各位能帮忙解决一下

以下是代码
：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">

    <action name="webchat" class="xjl.Webchat">
        <result name="chat">index.jsp</result>
        <result name="success" type="json">
            <param name="noCache">true</param>
            <param name="ignoreHierarchy">false</param>
        </result>
    </action>

</package>

<!-- Add packages here -->

$.ajax({
type : "post",
url : "webchat!chat.action",
dataType : "json",
data : {
"message.owner" : owner,
"message.username" : username,
"message.words" : msg,
"lastIndex" : lastIndex
},
success : function(data) {
lastIndex = data.lastIndex;
if (owner == "") {
owner = data.message.owner;
}
$.each(data.msg, function(i, m) {
if (m.owner != owner) {
showMsg(m.username, m.words,
"recv");
}
});
},
error : function(XMLHttpRequest,
textStatus, errorThrown) {
alert("亲，请稍后刷新一下界面，服务器正在玩命重启中...");
clearInterval(auto);
}
});

package xjl;

import java.util.ArrayList;
import java.util.List;

import javax.security.auth.message.callback.PrivateKeyCallback.Request;
import javax.servlet.http.HttpServletRequest;

import org.omg.PortableInterceptor.SUCCESSFUL;

import com.opensymphony.xwork2.ActionSupport;

public class Webchat extends ActionSupport {

private Message message;
List<Message> messages = new ArrayList<Message>();
List<Message> msg = new ArrayList<Message>();
private int lastIndex;

public Message getMessage() {
    return message;
}

public void setMessage(Message message) {
    this.message = message;
}

public List<Message> getMessages() {
    return messages;
}

public void setMessages(List<Message> messages) {
    this.messages = messages;
}

public List<Message> getMsg() {
    return msg;
}

public void setMsg(List<Message> msg) {
    this.msg = msg;
}

public int getLastIndex() {
    return lastIndex;
}

public void setLastIndex(int lastIndex) {
    this.lastIndex = lastIndex;
}

@Override
public String execute() {

    int n = messages.size();

    if (lastIndex != -1) {
        for (int i = lastIndex + 1; i < n; i++) {
            msg.add(messages.get(i));
        }
    }
    lastIndex = n - 1;
    System.out.println(lastIndex);

    if (message != null && !message.getWords().equals("")) {
        messages.add(message);
    }
    return SUCCESS;

}

}

package xjl;

public class Message {
private String owenr;
private String username;
private String words;

public String getOwenr() {
    return owenr;
}
public void setOwenr(String owenr) {
    this.owenr = owenr;
}
public String getUsername() {
    return username;
}
public void setUsername(String username) {
    this.username = username;
}
public void setWords(String words) {
    this.words = words;
}
public String getWords() {
    return words;
}

}

希望能帮帮忙

解决方案

只有代码，你要问什么问题呢？是报错了还是怎么的

解决方案二：

首先，你得告诉我报错内容是什么
第二，你的json，没啥没有在execute方法里转呢，没有转成json串，它怎么传到前台啊啊啊啊

解决方案三：

帮忙解决一下，谢谢了