JSONUtil(JAVA對象/List與json互轉，xml與json互轉)
阿新 • • 發佈：2017-11-11
transpose boolean ngs final span arraylist setname clas pro
1 package com.chauvet.utils.json; 2 3 import java.io.BufferedReader; 4 import java.io.File; 5 import java.io.FileInputStream; 6 import java.io.FileWriter; 7 import java.io.InputStreamReader; 8 import java.util.List; 9 10 import net.sf.json.JSONArray; 11 import net.sf.json.JSONObject;12 import net.sf.json.xml.XMLSerializer; 13 14 import org.apache.commons.lang.StringUtils; 15 16 import com.google.gson.Gson; 17 import com.google.gson.GsonBuilder; 18 19 20 public class JsonUtils { 21 private final static Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd HH:mm:ss").create();22 private static XMLSerializer xmlserializer = new XMLSerializer(); 23 24 public static Gson getInstance(){ 25 return gson; 26 } 27 28 /*** 29 * List 轉為 JSON 30 * @param list 31 * @return 32 */ 33 public static <T> String list2Json(List<T> list) {34 if(null != list && list.size() > 0){ 35 JSONArray jsonArray = JSONArray.fromObject(list); 36 return jsonArray.toString(); 37 } 38 return ""; 39 } 40 41 42 /*** 43 * JSON 轉換為 List 44 * @param jsonStr 45 * [{"age":12,"createTime":null,"id":"","name":"wxw","registerTime":null,"sex":1},{...}] 46 * @param objectClass 47 * @return 48 */ 49 @SuppressWarnings("unchecked") 50 public static <T> List<T> json2List(String jsonStr, Class<T> objectClass){ 51 if (StringUtils.isNotBlank(jsonStr)) { 52 JSONArray jsonArray = JSONArray.fromObject(jsonStr); 53 List<T> list = (List<T>) JSONArray.toCollection(jsonArray, objectClass); 54 return list; 55 } 56 return null; 57 } 58 59 60 /*** 61 * Object 轉為 JSON 62 * @param object 63 * @return 64 */ 65 public static String object2Json(Object object) { 66 if(null != object){ 67 JSONArray jsonArray = JSONArray.fromObject(object); 68 return jsonArray.toString(); 69 } 70 return ""; 71 } 72 73 /*** 74 * 75 * JSON 轉 Object 76 * 77 * @param jsonStr 78 * [{"age":12,"createTime":null,"id":"","name":"wxw","registerTime":null,"sex":1}] 79 * @param objectClass 80 * @return 81 */ 82 @SuppressWarnings("unchecked") 83 public static <T> T json2Ojbect(String jsonStr, Class<T> objectClass){ 84 if(null != jsonStr){ 85 String leftStr = jsonStr.substring(0,2); 86 String rightStr = jsonStr.substring(jsonStr.length()-2,jsonStr.length()); 87 if(leftStr.equals("[{")){ 88 jsonStr = jsonStr.substring(1,jsonStr.length()); 89 } 90 if(rightStr.equals("}]")){ 91 jsonStr = jsonStr.substring(0,jsonStr.length()-1); 92 } 93 JSONObject jsonStu = JSONObject.fromObject(jsonStr); 94 return (T) JSONObject.toBean(jsonStu,objectClass); 95 } 96 return null; 97 } 98 99 /*** 100 * JsonArray 轉為 JSON 101 * @param jsonArray 102 * @return 103 */ 104 public static String jsonArrayToJSONString(JSONArray jsonArray) { 105 if(null != jsonArray){ 106 return jsonArray.toString(); 107 } 108 return ""; 109 } 110 111 /*** 112 * JsonObject 轉為 JSON 113 * @param jsonObject 114 * @return 115 */ 116 public static String jsonObjectToJSONString(JSONObject jsonObject) { 117 if(null != jsonObject){ 118 return jsonObject.toString(); 119 } 120 return ""; 121 } 122 123 /*** 124 * 將Object轉換為JsonObject 125 * @param object 126 * @return 127 */ 128 public static JSONObject object2JsonObject(Object object) { 129 if(null != object){ 130 return JSONObject.fromObject(object); 131 } 132 return null; 133 } 134 135 136 /*** 137 * XML 轉為 JSON 138 * @param xmlString 139 * XML字符串 例如： 140 * <?xml version=‘1.0‘ encoding=‘utf-8‘?><cities><province name=‘北京‘><item>東城區</item><item>西城區</item><item>崇文區</item><item>宣武區</item><item>朝陽區</item><item>豐臺區</item><item>石景山區</item><item>海澱區</item><item>門頭溝區</item><item>房山區</item><item>通州區</item><item>順義區</item><item>昌平區</item><item>大興區</item><item>懷柔區</item><item>平谷區</item><item>密雲縣</item><item>延慶縣</item></province></cities> 141 * @return 142 * 143 */ 144 public static String xml2json(String xmlString){ 145 if(StringUtils.isNotBlank(xmlString)){ 146 try { 147 return xmlserializer.read(xmlString).toString(); 148 } catch (Exception e) { 149 e.printStackTrace(); 150 return null; 151 } 152 } 153 return null; 154 } 155 156 /*** 157 * JSON 轉為 XML 158 * @param xmlString 159 * XML字符串 例如： 160 * [{‘province‘:{‘@name‘:‘北京‘,‘item‘:[‘東城區‘,‘西城區‘,‘崇文區‘,‘宣武區‘,‘朝陽區‘,‘豐臺區‘,‘石景山區‘,‘海澱區‘,‘門頭溝區‘,‘房山區‘,‘通州區‘,‘順義區‘,‘昌平區‘,‘大興區‘,‘懷柔區‘,‘平谷區‘,‘密雲縣‘,‘延慶縣‘]}}] 161 * 或者： 162 * {‘province‘:{‘@name‘:‘北京‘,‘item‘:[‘東城區‘,‘西城區‘,‘崇文區‘,‘宣武區‘,‘朝陽區‘,‘豐臺區‘,‘石景山區‘,‘海澱區‘,‘門頭溝區‘,‘房山區‘,‘通州區‘,‘順義區‘,‘昌平區‘,‘大興區‘,‘懷柔區‘,‘平谷區‘,‘密雲縣‘,‘延慶縣‘]}} 163 * @return 164 * 165 */ 166 public static String json2xml(String jsonStr){ 167 if(StringUtils.isNotBlank(jsonStr)){ 168 try { 169 if(jsonStr.contains("[{") && jsonStr.contains("}]")){ 170 JSONArray jobj = JSONArray.fromObject(jsonStr); 171 return xmlserializer.write(jobj); 172 } 173 JSONObject jobj = JSONObject.fromObject(jsonStr); 174 return xmlserializer.write(jobj); 175 } catch (Exception e) { 176 e.printStackTrace(); 177 return null; 178 } 179 } 180 return null; 181 } 182 183 184 /*** 185 * XML/JSON 互轉 186 * 187 * @param sourceFilePath 188 * 要解析的文件路徑 189 * @param directFilePath 190 * 生成文件存放的路徑 191 * @param flag 192 * true:JSON 轉為 XML 193 * false:XML轉為 JSON 194 * @return 195 */ 196 public static String xml2JsonOrjson2Xml(String sourceFilePath,String directFilePath,boolean flag){ 197 if(StringUtils.isBlank(sourceFilePath) || StringUtils.isBlank(directFilePath)){ 198 return null; 199 } 200 FileInputStream in =null; 201 BufferedReader br = null; 202 FileWriter fw = null; 203 String rs = null; 204 try{ 205 File jsonFile = new File(sourceFilePath); 206 in = new FileInputStream(jsonFile); 207 StringBuffer sbuf = new StringBuffer(); 208 br = new BufferedReader(new InputStreamReader(in)); 209 String temp =null; 210 211 while((temp=br.readLine())!=null){ 212 sbuf.append(temp); 213 } 214 if(flag){ 215 rs = json2xml(sbuf.toString()); 216 }else{ 217 rs = xml2json(sbuf.toString()); 218 } 219 File test = new File(directFilePath); 220 if(!test.exists()){ 221 test.createNewFile(); 222 } 223 fw = new FileWriter(test); 224 fw.write(rs); 225 }catch (Exception e) { 226 e.printStackTrace(); 227 }finally{ 228 try { 229 fw.close(); 230 br.close(); 231 in.close(); 232 } catch (Exception e) { 233 e.printStackTrace(); 234 } 235 } 236 return rs; 237 } 238 239 240 public static void main(String[] args) { 241 242 // System.out.println(jfxfTranspose("E:/qwe.json", "E:/qwe.xml", 1)); 243 244 // System.out.println(json2xml("[{‘province‘:{‘@name‘:‘北京‘,‘item‘:[‘東城區‘,‘西城區‘,‘崇文區‘,‘宣武區‘,‘朝陽區‘,‘豐臺區‘,‘石景山區‘,‘海澱區‘,‘門頭溝區‘,‘房山區‘,‘通州區‘,‘順義區‘,‘昌平區‘,‘大興區‘,‘懷柔區‘,‘平谷區‘,‘密雲縣‘,‘延慶縣‘]}}]")); 245 // System.out.println(xml2json("<?xml version=‘1.0‘ encoding=‘utf-8‘?><cities><province name=‘北京‘><item>東城區</item><item>西城區</item><item>崇文區</item><item>宣武區</item><item>朝陽區</item><item>豐臺區</item><item>石景山區</item><item>海澱區</item><item>門頭溝區</item><item>房山區</item><item>通州區</item><item>順義區</item><item>昌平區</item><item>大興區</item><item>懷柔區</item><item>平谷區</item><item>密雲縣</item><item>延慶縣</item></province></cities>")); 246 247 /*User u = new User(); 248 u.setName("wxw"); 249 u.setAge(12); 250 u.setSex(1); 251 System.out.println(object2JsonObject(u));*/ 252 253 /*User u = new User(); 254 u.setName("wxw"); 255 u.setAge(12); 256 u.setSex(1); 257 System.out.println(object2Json(u));*/ 258 259 /*User us = json2Ojbect(object2Json(u), User.class); 260 System.out.println(us); 261 */ 262 263 /*List<User> list = new ArrayList<User>(); 264 User u = new User(); 265 u.setName("wxw"); 266 u.setAge(12); 267 u.setSex(1); 268 list.add(u); 269 u = new User(); 270 u.setName("zmx"); 271 u.setAge(12); 272 u.setSex(0); 273 list.add(u); 274 u = new User(); 275 u.setName("arnold"); 276 u.setAge(12); 277 u.setSex(1); 278 list.add(u); 279 String str = list2Json(list); 280 System.out.println(str);*/ 281 282 /*List<User> userList = converAnswerFormString(str, User.class); 283 System.out.println(userList); 284 */ 285 286 } 287 }
JSONUtil(JAVA對象/List與json互轉，xml與json互轉)