java - 从 JSON 响应中获取 String[][] 数组

Question

我从服务器收到以下 JSON 响应...

[["1","1"],["2","1"],["3","1"],["4","1"],["5","1"],["6","1"],["7","1"],["8","1"],["9","2"],["10","3"],["11","3"],["12","3"],["13","3"],["14","3"],["15","3"],["16","3"],["17","3"],["18","3"],["19","3"]]

它是 JSON 格式，我将它作为 String[] 获取，类似这样......

String response = Response.getValue();
System.out.println(response) = [["1","1"],["2","1"],["3","1"],["4","1"],["5","1"],["6","1"],["7","1"],["8","1"],["9","2"],["10","3"],["11","3"],["12","3"],["13","3"],["14","3"],["15","3"],["16","3"],["17","3"],["18","3"],["19","3"]]

但是，响应是一个由 2 个值组成的矩阵 [USU_ID, DEPARTMENT]，我需要在 String[][] 中使用它。我怎样才能做到这一点？我尝试使用 StringTokenizer 但效果不太好。

这是我写的代码...

public static String[][] Json2Matrix(String jsonStringArray) {
        int i = 0;
        int j = 0;

        String[][] mstrJsonString = null;
        StringTokenizer tokElementos, tokSubelementos, tokTemp;
        //jsonArray = "[["a","b"],["c","d"],["e","f"]]";
        //jsonStringArray = jsonStringArray.replace("\"", "");
        //jsonArray = "[[a,b],[c,d],[e,f]]";
        jsonStringArray = jsonStringArray.substring(1, jsonStringArray.length() - 2);
        //jsonArray = "[a,b],[c,d],[e,f]";/

        //System.out.println(jsonStringArray);

        //JSONSerializer.toJSON(jsonStringArray);

        //System.out.println(jsonArray.toString());

        //<editor-fold defaultstate="collapsed" desc="Prueba">
        tokElementos = new StringTokenizer(jsonStringArray, "[]");

        tokTemp = tokElementos;
        tokSubelementos = new StringTokenizer(tokTemp.nextToken(), ",");

        //System.out.println(tokElementos.countTokens());

        //System.out.println(tokElementos.nextToken());

        //System.out.println(tokSubelementos.countTokens()/2);

        mstrJsonString = new String[tokElementos.countTokens()][tokSubelementos.countTokens()];

        while (tokElementos.hasMoreTokens()) {
            tokSubelementos = new StringTokenizer(tokElementos.nextToken(), ",");
            j = 0;
            while (tokSubelementos.hasMoreTokens()) {

                mstrJsonString[i][j] = tokSubelementos.nextToken();
                System.out.println(i + "," + j + " " + mstrJsonString[i][j]);
                j++;
            }
            i++;

        }
        //</editor-fold>
        return mstrJsonString;
    }

我得到这个作为输出...

run:
1,0 "2"
1,1 "1"
3,0 "3"
3,1 "1"
5,0 "4"
5,1 "1"
7,0 "5"
7,1 "1"
9,0 "6"
9,1 "1"
11,0 "7"
11,1 "1"
13,0 "8"
13,1 "1"
15,0 "9"
15,1 "2"
17,0 "10"
17,1 "3"
19,0 "11"
19,1 "3"
21,0 "12"
21,1 "3"
23,0 "13"
23,1 "3"
25,0 "14"
25,1 "3"
27,0 "15"
27,1 "3"
29,0 "16"
29,1 "3"
31,0 "17"
31,1 "3"
33,0 "18"
33,1 "3"
35,0 "19"
35,1 "3"

它得到了正确的值，但索引不正确。有人可以帮我纠正这个问题吗？

Answer 1

使用 JSON 解析器比自己编写原始解析器节省很多精力。

我使用了这些基于 Java 的 JSON 解析器:

1. jackson [http://jackson.codehaus.org/]
2. Google 的 GSON [http://code.google.com/p/google-gson/]

我推荐 Google 的 GSON:

1. 您可以将 json 字符串序列化/反序列化为 Java 对象 [POJO]，无需注释 [使用变量名称]。
2. 可以轻松序列化/反序列化深层对象层次结构。
3. 它对 Java 泛型有很好的支持