01 02 03 04 05 06 07 08 09 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 | import java.io.ByteArrayOutputStream; import java.io.InputStream; import java.net.*; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.json.JSONArray; import org.json.JSONObject; import android.util.Log; public class JSON { /** * 获取"数组形式"的JSON数据, * 数据形式:[{"id":1,"name":"小猪"},{"id":2,"name":"小猫"}] * @param path 网页路径 * @return 返回List * @throws Exception */ public static List<Map<String, String>> getJSONArray(String path) throws Exception { String json = null ; List<Map<String, String>> list = new ArrayList<Map<String, String>>(); Map<String, String> map = null ; URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setConnectTimeout( 5 * 1000 ); conn.setRequestMethod( "GET" ); if (conn.getResponseCode() == 200 ) { InputStream is = conn.getInputStream(); byte [] data = readStream(is); json = new String(data); JSONArray jsonArray = new JSONArray(json); for ( int i = 0 ; i < jsonArray.length(); i++) { JSONObject item = jsonArray.getJSONObject(i); int id = item.getInt( "id" ); String name = item.getString( "name" ); map = new HashMap<String, String>(); map.put( "id" , id + "" ); map.put( "name" , name); list.add(map); } } for (Map<String, String> list2 : list) { String id = list2.get( "id" ); String name = list2.get( "name" ); Log.i( "abc" , "id:" + id + " | name:" + name); } return list; } /** * 获取"对象形式"的JSON数据, * 数据形式:{"total":2,"success":true,"arrayData":[{"id":1,"name":"小猪"},{"id":2,"name":"小猫"}]} * @param path 网页路径 * @return 返回List * @throws Exception */ public static List<Map<String, String>> getJSONObject(String path) throws Exception { List<Map<String, String>> list = new ArrayList<Map<String, String>>(); Map<String, String> map = null ; URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setConnectTimeout( 5 * 1000 ); conn.setRequestMethod( "GET" ); if (conn.getResponseCode() == 200 ) { InputStream is = conn.getInputStream(); byte [] data = readStream(is); String json = new String(data); JSONObject jsonObject= new JSONObject(json); int total=jsonObject.getInt( "total" ); Boolean success=jsonObject.getBoolean( "success" ); Log.i( "abc" , "total:" + total + " | success:" + success); JSONArray jsonArray = jsonObject.getJSONArray( "arrayData" ); for ( int i = 0 ; i < jsonArray.length(); i++) { JSONObject item = jsonArray.getJSONObject(i); int id = item.getInt( "id" ); String name = item.getString( "name" ); map = new HashMap<String, String>(); map.put( "id" , id + "" ); map.put( "name" , name); list.add(map); } } for (Map<String, String> list2 : list) { String id = list2.get( "id" ); String name = list2.get( "name" ); Log.i( "abc" , "id:" + id + " | name:" + name); } return list; } /** * 获取类型复杂的JSON数据 *数据形式: {"name":"小猪", "age":23, "content":{"questionsTotal":2, "questions": [ { "question": "what's your name?", "answer": "小猪"},{"question": "what's your age", "answer": "23"}] } } * @param path 网页路径 * @return 返回List * @throws Exception */ public static List<Map<String, String>> getJSON(String path) throws Exception { List<Map<String, String>> list = new ArrayList<Map<String, String>>(); Map<String, String> map = null ; URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setConnectTimeout( 5 * 1000 ); conn.setRequestMethod( "GET" ); if (conn.getResponseCode() == 200 ) { InputStream is = conn.getInputStream(); byte [] data = readStream(is); String json = new String(data); public static byte [] readStream(InputStream inputStream) throws Exception { ByteArrayOutputStream bout = new ByteArrayOutputStream(); byte [] buffer = new byte [ 1024 ]; int len = 0 ; while ((len = inputStream.read(buffer)) != - 1 ) { bout.write(buffer, 0 , len); } bout.close(); inputStream.close(); return bout.toByteArray(); } } |