转换JSON数组[阵列[字符串]以Java数组 [英] Convert JSON array[array[String]] to Java array
问题描述
我有一个JavaScript的JSON数组[阵列[字符串]名为 jsonArray
在我的 JSP1.jsp
。
I have a JavaScript JSON array[array[String]] called jsonArray
in my JSP1.jsp
.
我使用的转换 jsonArray
为字符串 jsonArrayStr
JSON.stringify(JSONArray),其中
在 JSP1.jsp
。
I am converting jsonArray
to a String jsonArrayStr
using JSON.stringify(jsonArray)
in JSP1.jsp
.
我传递 jsonArrayStr
作为参数调用,而另一个JSP JSP2.jsp
这种方式 -
I am passing jsonArrayStr
as a parameter while calling another JSP JSP2.jsp
this way-
"JSP2.do?jsonArrayStr="+jsonArrayStr
在 JSP2.jsp
,我这样做 -
String jsonArrayStr = request.getParameter("jsonArrayStr");
现在我怎么转换 jsonArrayStr
为 Java数组( JSP2.jsp
没有按'T包含任何JavaScript code)
Now how do I convert jsonArrayStr
to Java array (JSP2.jsp
doesn't contain any JavaScript code)
摘要 -
我有一个JavaScript的JSON数组一个 JSP1.jsp
,我想访问在 JSP2.jsp一个普通的Java数组/数组列表
。我如何做到这一点?
I have a JavaScript JSON Array in a JSP1.jsp
, which I want to access as a normal Java array/arraylist in JSP2.jsp
. How do I achieve this?
推荐答案
OK,让你有一个字符串的二维数组重新psented作为JSON这样存储在Java字符串$ P $:
OK, so you have a two-dimensional array of strings represented as a JSON like this stored in a Java String:
[["a", "b", "c"],["x"],["y","z"]]
您需要以某种方式解析或反序列化的值转换成Java的String [] []。您可以使用像一个图书馆从 http://www.json.org/java/index.html 或 HTTP://jackson.$c$chaus.org/ 或者你可以尝试做手工。手动可能是一个有点棘手,但并非不可能。该json.org库非常简单,可能是不够好。在code会是这样的(我还没试过/测试这一点):
You need to somehow parse or "deserialize" that value into a Java String[][]. You can use a library like from http://www.json.org/java/index.html or http://jackson.codehaus.org/ or you can try to do it manually. Manually could be a little tricky but not impossible. The json.org library is very simple and might be good enough. The code would be something like this (I haven't tried/tested this):
JSONArray jsonArray = new JSONArray(jsonArrayStr); // JSONArray is from the json.org library
String[][] arrayOfArrays = new String[jsonArray.length()][];
for (int i = 0; i < jsonArray.length(); i++) {
JSONArray innerJsonArray = (JSONArray) jsonArray.get(i);
String[] stringArray = new String[innerJsonArray.length()];
for (int j = 0; j < innerJsonArray.length(); j++) {
stringArray[j] = innerJsonArray.get(j);
}
arrayOfArrays[i] = stringArray;
}
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