java xml转为json的n种方法

柔情只为你懂 2023-09-26 18:56 22阅读 0赞

java xml转为json的两种方法

<?xml version="1.0" encoding="utf-8" ?>
    <auibinsurancecallback>
    <policyinfo>
    <transtype>TKTS</transtype>
    <eticketno>xxx</eticketno>
    <flightnumber>xxx</flightnumber>
    <flightdate>2019-10-16</flightdate>
    <operatetime>2019-10-16 17:20:00</operatetime>
    <insureno>1910161720056066735</insureno><agreeno>102160199</agreeno>
    <policyno>
    </policyno><policyurl>
    
    </policyurl></policyinfo>
    <returninfo>
    <serialnumber>2019103015284949545354
    </serialnumber>
    <retruncode>0</retruncode><errormessage>
    
    </errormessage>
    </returninfo>
    </auibinsurancecallback>";

先来看效果，效果一：

{
      "auibinsurancecallback": {
        "returninfo": [
          {
            "retruncode": [
              "0"
            ],
            "serialnumber": [
              "2019103015284949545354"
            ]
          }
        ],
        "policyinfo": [
          {
            "operatetime": [
              "2019-10-16 17:20:00"
            ],
            "transtype": [
              "TKTS"
            ],
            "flightdate": [
              "2019-10-16"
            ],
            "insureno": [
              "1910161720056066735"
            ],
            "flightnumber": [
              "xxx"
            ],
            "agreeno": [
              "102160199"
            ],
            "eticketno": [
              "xxxx"
            ]
          }
        ]
      }
    }

效果二：

{
      "auibinsurancecallback": {
        "returninfo": {
          "errormessage": "",
          "retruncode": 0,
          "serialnumber": 2.0191030152849496e+21
        },
        "policyinfo": {
          "policyurl": "",
          "operatetime": "2019-10-16 17:20:00",
          "transtype": "TKTS",
          "flightdate": "2019-10-16",
          "insureno": 1910161720056066800,
          "flightnumber": "xxx",
          "agreeno": 102160199,
          "policyno": "",
          "eticketno": xxx
        }
      }
    }

从效果来看，明显是第二种方法，比第一种好。

下面把代码贴出出来

第一种实现：用到的包是fastjson, jdom2

public static JSONObject xml2JSON(byte[] xml) throws JDOMException, IOException {
            JSONObject json = new JSONObject();
            InputStream is = new ByteArrayInputStream(xml);
            SAXBuilder sb = new SAXBuilder();
            org.jdom2.Document doc = sb.build(is);
            Element root = doc.getRootElement();
            json.put(root.getName(), iterateElement(root));
            return json;
        }
     
        private static JSONObject iterateElement(Element element) {
            List node = element.getChildren();
            Element et = null;
            JSONObject obj = new JSONObject();
            List list = null;
            for (int i = 0; i < node.size(); i++) {
                list = new LinkedList();
                et = (Element) node.get(i);
                if (et.getTextTrim().equals("")) {
                    if (et.getChildren().size() == 0)
                        continue;
                    if (obj.containsKey(et.getName())) {
                        list = (List) obj.get(et.getName());
                    }
                    list.add(iterateElement(et));
                    obj.put(et.getName(), list);
                } else {
                    if (obj.containsKey(et.getName())) {
                        list = (List) obj.get(et.getName());
                    }
                    list.add(et.getTextTrim());
                    obj.put(et.getName(), list);
                }
            }
            return obj;
        }
     
     @Test
        public void xml1(){
            String  xml = 上面贴的xml;
     
            JSONObject json= null;
            try {
                json = xml2JSON(xml.getBytes());
                System.out.println(json.toJSONString());
            } catch (JDOMException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
     
        }

第二种实现：用的org.json包，

在用org.json包的时候，需要把spring-boot-starter-test中的，android-json排除，要不然会报错：

java.lang.NoSuchMethodError: org.json.JSONTokener.<init>(Ljava/io/Reader;)V

java.lang.NoSuchMethodError: org.json.JSONObject.put(Ljava/lang/String;Ljava/util/Collection;)

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
                <exclusions>
                    <exclusion>
                        <groupId>com.vaadin.external.google</groupId>
                        <artifactId>android-json</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>

实现方法简单：

org.json.JSONObject xmlJSONObj = null;
           try {
               xmlJSONObj = XML.toJSONObject(xml);
               log.debug("json:" + xmlJSONObj.toString() );
           } catch (JSONException e) {
               e.printStackTrace();
           }

到此这篇关于java xml转为json的两种方法的文章就介绍到这了