目录

一、测试数据

二、Str、JSONObject、JSONArray等互转

三、数据遍历、不规则数据整理

四、JsonString转XML

讯享网

五、XML转JsonString

六、json转map

七、map转xml

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一、测试数据

private static String getJsonData() { return "{\n" + " \"companyNo\": \"C001\",\n" + " \"supplyNo\": \"S001\",\n" + " \"orders\": [\n" + " {\n" + " \"orderNo\": \"aaa001\",\n" + " \"orderType\": \"order001\",\n" + " \"orderAmount\": \"100\",\n" + " \"creatorDate\": \"\",\n" + " \"invoiceAmount\": \"500\",\n" + " \"openItemAmount\": \"700\"\n" + " },\n" + " {\n" + " \"orderNo\": \"ccc002\",\n" + " \"orderType\": \"order002\",\n" + " \"orderAmount\": \"600\",\n" + " \"creatorDate\": \"\",\n" + " \"invoiceAmount\": \"123\",\n" + " \"openItemAmount\": \"456\"\n" + " }\n" + " ]\n" + "}"; }

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二、Str、JSONObject、JSONArray等互转

讯享网private static void json2json(String reqString) { reqString = "".equals(reqString) ? null : reqString; //string转object对象 JSONObject reqJson = JSONObject.parseObject(reqString); //获取对应字段 String companyNo = reqJson.getString("companyNo"); //JSONObject转JSONArray String orders = reqJson.getString("orders"); JSONArray jsonArray = JSONArray.parseArray(orders); //jsonObject-json互转 JSON json = reqJson.getObject("orders", JSON.class); String str = json.toJSONString(); JSONObject jsonObject = JSONObject.parseObject(str); JSONArray jsonArray2 = JSONArray.parseArray(str); JSONArray dealArray = dealArray(jsonArray); System.out.println(reqJson); // json格式str转bean Bean bean = JSON.parseObject(jsonStr, Bean.class); //json格式str转List<bean> List<Bean> list = JSON.parseArray(jsonStr, Bean.class); }

三、数据遍历、不规则数据整理

//遍历，处理不规则数据 private static JSONArray dealArray(JSONArray array) { JSONArray array2 = new JSONArray(); for (int i = 0; i < array.size(); i++) { JSONObject json = array.getJSONObject(i); JSONObject jsonObject = new JSONObject(); for (String key : json.keySet()) { jsonObject.put(key, json.get(key).toString().trim()); } array2.add(jsonObject); } return array2; }

四、JsonString转XML

讯享网 public static String toXml(Object obj) throws UnsupportedEncodingException { ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); JAXB.marshal(obj,outputStream); return outputStream.toString("utf8"); }

五、XML转JsonString

 public static Object xmlToParam(String xml,Class<?> clazz) throws JAXBException { StringReader reader = new StringReader(xml); JAXBContext jaxbContext = JAXBContext.newInstance(clazz); Unmarshaller unmarshaller = jaxbContext.createUnmarshaller(); return unmarshaller.unmarshal(reader); }

六、json转map

讯享网public static Map<String, Object> json2Map(String jsonStr) { Map<String, Object> map = new HashMap<>(); ObjectMapper objectMapper = new ObjectMapper(); if(jsonStr != null && !"".equals(jsonStr)){ //最外层解析 try { Map jsonObject = objectMapper.readValue(jsonStr, Map.class); for (Object k : jsonObject.keySet()) { Object v = jsonObject.get(k); //如果内层还是数组的话，继续解析 if (v instanceof ArrayList) { List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); Iterator<Map> it = ((ArrayList) v).iterator(); while (it.hasNext()) { Map json2 = it.next(); list.add(json2Map(objectMapper.writeValueAsString(json2))); } map.put(k.toString(), list); } else { map.put(k.toString(), v); } } } catch (IOException e) { e.printStackTrace(); } return map; }else{ return null; } } 

七、map转xml

public static String jsonToXml(Object json, String rootKey) { Document document = DocumentHelper.createDocument(); //设置根节点和命名空间 QName qName = new QName(rootKey); //设置命令空间 Element element = document.addElement(qName); document.setRootElement(element); ObjectMapper objectMapper = new ObjectMapper(); try { JsonObject jsonObject = new JsonParser().parse(objectMapper.writeValueAsString(json)).getAsJsonObject(); toXml(jsonObject, document.getRootElement(), null); return document.asXML(); } catch (Exception e) { log.error(e.getMessage()); throw new AppException(e.getMessage()); } } private static Element toXml(JsonElement jsonElement, Element parentElement, String name) { if (jsonElement instanceof JsonArray) { //是json数据，需继续解析 JsonArray sonJsonArray = (JsonArray)jsonElement; for (int i = 0; i < sonJsonArray.size(); i++) { JsonElement arrayElement = sonJsonArray.get(i); toXml(arrayElement, parentElement, name); } }else if (jsonElement instanceof JsonObject) { //说明是一个json对象字符串，需要继续解析 JsonObject sonJsonObject = (JsonObject) jsonElement; Element currentElement = null; if (name != null) { currentElement = parentElement.addElement(name); } Set<Map.Entry<String, JsonElement>> set = sonJsonObject.entrySet(); for (Map.Entry<String, JsonElement> s : set) { toXml(s.getValue(), currentElement != null ? currentElement : parentElement, s.getKey()); } }else if (jsonElement.isJsonNull()){ parentElement.addElement(name); }else { //说明是一个键值对的key,可以作为节点插入了 addAttribute(parentElement, name, jsonElement.getAsString()); } return parentElement; } private static void addAttribute(Element element, String name, String value) { //增加子节点，并为子节点赋值 if (String.valueOf(name.charAt(0)).equals(StringPool.DASH)){ // 参数前为 “-”符号的为节点属性 去除“-”符号并添加属性 String key=name.substring(1); if (key.equals("xmlns")){ Namespace namespace=new Namespace("",value); QName qName=new QName(element.getName(),namespace); element.setQName(qName); }else { element.addAttribute(key,value); } }else if (StringPool.HASH.equals(String.valueOf(name.charAt(0)))){ element.addText(value); }else { Element el = element.addElement(name); el.addText(value); } } 

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