如何通过json返回数据

发布于 2024-12-20 14:11:40 字数 592 浏览 0 评论 0原文

我正在尝试返回有关 guests 的信息（目前只有 id 和 name），但我不知道如何正确执行它。我的方法如下

由于java不接受关联数组，如何仅将id和名称发送到myData.put()？我尝试在该方法中创建一个要返回的类，但事实证明这在 java 中也是非法的。这里的想法解决方案是什么？

/**
 * Retrieves representation of an instance of contentmanagement.ContentManagement
 * @return an instance of java.lang.String
 */
@GET @Path("getHtml")
@Produces("application/json")
public String getGuests() {
    JSONArray myData = new JSONArray();

    for(Guest item : guestDao.getAllGuests()) {
        myData.put({});
    }

    return myData.toString();
}

原文

I'm trying to return information about guests (only an id and name right now) but I can't figure out how to properly do it. My method is below

How can I sent only the id and name to myData.put() since java doesn't accept associative arrays? I've tried creating a class within this method to be returned but that turns out to be illegal in java as well. What's the idea solution here?

/**
 * Retrieves representation of an instance of contentmanagement.ContentManagement
 * @return an instance of java.lang.String
 */
@GET @Path("getHtml")
@Produces("application/json")
public String getGuests() {
    JSONArray myData = new JSONArray();

    for(Guest item : guestDao.getAllGuests()) {
        myData.put({});
    }

    return myData.toString();
}

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蒲公英的约定 2024-12-27 14:11:40

JSONObject 类表示名称-值对，因此您的代码如下所示：

/**
 * Retrieves representation of an instance of contentmanagement.ContentManagement
 * @return an instance of java.lang.String
 */
@GET @Path("getHtml")
@Produces("application/json")
public String getGuests() {
    JSONArray myData = new JSONArray();

    for(Guest item : guestDao.getAllGuests()) {
        myData.put(new JSONObject().put("id", item.getID())
          .put("name", item.getName()));
    } 

    return myData.toString();
}

The JSONObject class represents the name-value pair, so your code looks like:

/**
 * Retrieves representation of an instance of contentmanagement.ContentManagement
 * @return an instance of java.lang.String
 */
@GET @Path("getHtml")
@Produces("application/json")
public String getGuests() {
    JSONArray myData = new JSONArray();

    for(Guest item : guestDao.getAllGuests()) {
        myData.put(new JSONObject().put("id", item.getID())
          .put("name", item.getName()));
    } 

    return myData.toString();
}

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