1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*
* $Id: JSONObject.java,v 1.1 2006/04/15 14:10:48 platform Exp $
* Created on 2006-4-10
*/
package org.json.simple;
import java.io.IOException;
import java.io.Writer;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
/**
* A JSON object. Key value pairs are unordered. JSONObject supports java.util.Map interface.
*
* @author FangYidong<fangyidong@yahoo.com.cn>
*/
public class JSONObject extends HashMap implements Map, JSONAware, JSONStreamAware{
private static final long serialVersionUID = -503443796854799292L;
/**
* Encode a map into JSON text and write it to out.
* If this map is also a JSONAware or JSONStreamAware, JSONAware or JSONStreamAware specific behaviours will be ignored at this top level.
*
* @see org.json.simple.JSONValue#writeJSONString(Object, Writer)
*
* @param map
* @param out
*/
public static void writeJSONString(Map map, Writer out) throws IOException {
if(map == null){
out.write("null");
return;
}
boolean first = true;
Iterator iter=map.entrySet().iterator();
out.write('{');
while(iter.hasNext()){
if(first)
first = false;
else
out.write(',');
Map.Entry entry=(Map.Entry)iter.next();
out.write('\"');
out.write(escape(String.valueOf(entry.getKey())));
out.write('\"');
out.write(':');
JSONValue.writeJSONString(entry.getValue(), out);
}
out.write('}');
}
public void writeJSONString(Writer out) throws IOException{
writeJSONString(this, out);
}
/**
* Convert a map to JSON text. The result is a JSON object.
* If this map is also a JSONAware, JSONAware specific behaviours will be omitted at this top level.
*
* @see org.json.simple.JSONValue#toJSONString(Object)
*
* @param map
* @return JSON text, or "null" if map is null.
*/
public static String toJSONString(Map map){
if(map == null)
return "null";
StringBuffer sb = new StringBuffer();
boolean first = true;
Iterator iter=map.entrySet().iterator();
sb.append('{');
while(iter.hasNext()){
if(first)
first = false;
else
sb.append(',');
Map.Entry entry=(Map.Entry)iter.next();
toJSONString(String.valueOf(entry.getKey()),entry.getValue(), sb);
}
sb.append('}');
return sb.toString();
}
public String toJSONString(){
return toJSONString(this);
}
private static String toJSONString(String key,Object value, StringBuffer sb){
sb.append('\"');
if(key == null)
sb.append("null");
else
JSONValue.escape(key, sb);
sb.append('\"').append(':');
sb.append(JSONValue.toJSONString(value));
return sb.toString();
}
public String toString(){
return toJSONString();
}
public static String toString(String key,Object value){
StringBuffer sb = new StringBuffer();
toJSONString(key, value, sb);
return sb.toString();
}
/**
* Escape quotes, \, /, \r, \n, \b, \f, \t and other control characters (U+0000 through U+001F).
* It's the same as JSONValue.escape() only for compatibility here.
*
* @see org.json.simple.JSONValue#escape(String)
*
* @param s
* @return
*/
public static String escape(String s){
return JSONValue.escape(s);
}
}
|
