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把json按特定格式读出

  1 {
  2  "id": "tactic_1352426077777",
  3  "name": "测试策略",
  4  "protocols_data": [
  5   {
  6    "treatyname": "全部协议组",
  7    "priority": 1,
  8    "dataval": {
  9     "range": "全时段",
 10     "controls": {
 11      "controls": [
 12       {
 13        "id": " 1",
 14        "name": "信号干扰",
 15        "color": "#569"
 16       },
 17       {
 18        "id": " 3",
 19        "name": "提示音干扰",
 20        "color": "#762"
 21       }
 22      ],
 23      "data": [
 24       {
 25        "id": "0-0",
 26        "control": "0",
 27        "color": "#569"
 28       },
 29       {
 30        "id": "0-0",
 31        "control": "2",
 32        "color": "#569"
 33       },
 34      {
 35        "id": "0-0",
 36        "control": " ",
 37        "color": "#569"
 38       },
 39       {
 40        "id": "6-47",
 41        "control": "3",
 42        "color": "#569"
 43       },
 44       {
 45        "id": "0-0",
 46        "control": " ",
 47        "color": "#569"
 48       },
 49        {
 50        "id": "0-0",
 51        "control": "1",
 52        "color": "#569"
 53       },
 54       {
 55        "id": "0-0",
 56        "control": "2",
 57        "color": "#569"
 58       },
 59      {
 60        "id": "0-0",
 61        "control": " ",
 62        "color": "#569"
 63       },
 64       {
 65        "id": "6-47",
 66        "control": "3",
 67        "color": "#569"
 68       },
 69       {
 70        "id": "0-0",
 71        "control": " ",
 72        "color": "#569"
 73       },
 74         {
 75        "id": "0-0",
 76        "control": "1",
 77        "color": "#569"
 78       },
 79       {
 80        "id": "0-0",
 81        "control": "2",
 82        "color": "#569"
 83       },
 84      {
 85        "id": "0-0",
 86        "control": " ",
 87        "color": "#569"
 88       },
 89       {
 90        "id": "6-47",
 91        "control": "3",
 92        "color": "#569"
 93       },
 94       {
 95        "id": "0-0",
 96        "control": " ",
 97        "color": "#569"
 98       },
 99        {
100        "id": "0-0",
101        "control": "1",
102        "color": "#569"
103       },
104       {
105        "id": "0-0",
106        "control": "2",
107        "color": "#569"
108       },
109      {
110        "id": "0-0",
111        "control": " ",
112        "color": "#569"
113       },
114       {
115        "id": "6-47",
116        "control": "3",
117        "color": "#569"
118       },
119       {
120        "id": "0-0",
121        "control": " ",
122        "color": "#569"
123       },
124       {
125        "id": "0-0",
126        "control": "1",
127        "color": "#569"
128       },
129       {
130        "id": "0-0",
131        "control": "2",
132        "color": "#569"
133       },
134      {
135        "id": "0-0",
136        "control": " ",
137        "color": "#569"
138       },
139       {
140        "id": "6-47",
141        "control": "3",
142        "color": "#569"
143       },
144       {
145        "id": "0-0",
146        "control": " ",
147        "color": "#569"
148       },
149        {
150        "id": "0-0",
151        "control": "1",
152        "color": "#569"
153       },

上面是一段json的片段，我们这个程序演示的是把data数组的control:X 读出来，这个X有可能是null等。

 1 public class json1 {
 2 
 3     public static List<String> readfile() // 读取文件
 4     {
 5         List<String> control = new ArrayList<String>();
 6         try {
 7             MultiMap mm = new MultiMap();
 8             FileReader fr = new FileReader("json1");
 9             BufferedReader br = new BufferedReader(fr);
10             String str = null;
11             while ((str = br.readLine()) != null) {
12                 String[] ss = null;
13                 if (str.contains(":")) {
14                     ss = str.trim().split(":");
15                     mm.put(ss[0].trim(), ss[1].trim().replace(",", ""));
16                 }
17             }
18             control = mm.get("\"control\"");
19 
20         } catch (Exception e) {
21             e.printStackTrace();
22         }
23         return control;
24     }
25 
26     private static Map<String, String> controltomap(List name,
27             List<String> value)// 以键值对的形式存储
28     {
29         Map<String, String> map = new HashMap<String, String>();
30         for (int i = 0; i < name.size(); i++) {
31             if (!name.get(i).equals("\" \"")) {
32                 String va = "";
33                 for (int j = 0; j < value.size(); j++) {
34                     if (!value.get(j).equals(name.get(i))) {
35                         va += "0";
36                     } else {
37                         va = va + "1";
38                     }
39                 }
40                 map.put((String) name.get(i), va);
41             }
42         }
43         return map;
44     }
45 
46     // 除去重复键
47     private static List removeDuplicate(List<String> list) {
48         HashSet h = new HashSet(list);
49         List<String> lis = new ArrayList<String>();
50         lis.addAll(h);
51         return lis;
52     }
53 
54     public static void main(String[] args) {
55         List<String> control1 = new ArrayList<String>(); // 获取文件的所有值
56         List<String> control2 = new ArrayList<String>(); // 获取文件的关键值
57         control1 = readfile();
58         control2 = removeDuplicate(control1);
59         Map<String, String> ma = controltomap(control2, control1);
60         System.out.println(control1);
61         for (int i = 0; i < control2.size(); i++) {
62             if (!control2.get(i).equals("\" \"")) {
63                 System.out.println(control2.get(i));
64                 System.out.println(ma.get(control2.get(i)));
65             }
66         }
67         
68     }

后续会把转换成XML的代码上传！！！！

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原文地址：https://www.cnblogs.com/liangdelin/p/2789470.html