谁能告诉如何在jsp中迭代和使用一个json映射数组？答案

【问题标题】：Can anyone please tell how to iterate and use a json array of maps in jsp?谁能告诉如何在jsp中迭代和使用一个json映射数组？
【发布时间】：2023-03-07 01:35:01
【问题描述】：

我的 javascript 中有我的 json 数据（地图数组），如下所示：

[
{"HOURLY":"$309.75","Airport Fee":"$15.00","STC":"$52.66","Gratuity":"$61.95","Fuel Surcharge":"$5.00"},
{"HOURLY":"$309.75","Airport Fee":"$15.00","STC":"$52.66","Gratuity":"$61.95","Fuel Surcharge":"$5.00"}
]

我想使用 object.value 或 map.getValueBykey 机制在我的 jsp 中使用其中一个映射的值，就像我们使用从 java 传递到 jsp 的模型对象一样。

【问题讨论】：

标签： javascript jquery json jsp jstl

【解决方案1】：

看到你有一个对象数组，首先把它当作一个数组来对待。所以，

prices = [
  {"HOURLY":"$309.75","Airport Fee":"$15.00","STC":"$52.66","Gratuity":"$61.95","Fuel Surcharge":"$5.00"},
  {"HOURLY":"$329.75","Airport Fee":"$15.00","STC":"$52.66","Gratuity":"$61.95","Fuel Surcharge":"$5.00"}
];

console.log(prices[0].HOURLY); // will output "$309.75", value found in the first object
console.log(prices[1].HOURLY); // will output "$329.75", value found in the second object

// If you want to get all values of that one property in all objects in the array, you can iterate like this:
for(var i =0;i <prices.length;i++){
  console.log( prices[i].HOURLY);
}

// If you want to get all values for each property in a specific object, for example the first one in the array, you can iterate like this :
for(key in prices[0]){
  console.log("'" +key + "' = " + prices[0][key]);
}

这就是它在 JavaScript 中的实现方式。但是，我看到您在询问有关 JSP 的问题。也许您正在寻找这样的示例： javax.servlet.ServletException: javax.servlet.jsp.JspTagException: Don't know how to iterate over supplied "items" in <forEach>

【讨论】：