import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
/**
* The type Test.
*/
public class Test {
/**
* Json to xml string.
*
* @param json the json
* @return the string
*/
public static String jsonToXml(String json){
try {
StringBuffer buffer = new StringBuffer();
buffer.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
JSONObject jObj = JSON.parseObject(json);
jsonToXmlstr(jObj,buffer);
return buffer.toString();
} catch (Exception e) {
e.printStackTrace();
return "";
}
}
/**
* Json to xmlstr string.
*
* @param jObj the j obj
* @param buffer the buffer
* @return the string
*/
public static String jsonToXmlstr(JSONObject jObj,StringBuffer buffer ){
Set<Map.Entry<String, Object>> se = jObj.entrySet();
for(Iterator<Map.Entry<String, Object>> it = se.iterator(); it.hasNext(); )
{
Map.Entry<String, Object> en = it.next();
if(en.getValue().getClass().getName().equals("com.alibaba.fastjson.JSONObject")){
buffer.append("<"+en.getKey()+">");
JSONObject jo = jObj.getJSONObject(en.getKey());
jsonToXmlstr(jo,buffer);
buffer.append("</"+en.getKey()+">");
}else if(en.getValue().getClass().getName().equals("com.alibaba.fastjson.JSONArray")){
JSONArray jarray = jObj.getJSONArray(en.getKey());
for (int i = 0; i < jarray.size(); i++) {
buffer.append("<"+en.getKey()+">");
JSONObject jsonobject = jarray.getJSONObject(i);
jsonToXmlstr(jsonobject,buffer);
buffer.append("</"+en.getKey()+">");
}
}else if(en.getValue().getClass().getName().equals("java.lang.String")){
buffer.append("<"+en.getKey()+">"+en.getValue());
buffer.append("</"+en.getKey()+">");
}
}
return buffer.toString();
}
/**
* The entry point of application.
*
* @param args the input arguments
*/
public static void main(String[] args) {
String xmlstr = jsonToXml("{\"class\": {\"student\": [{\"age\": \"18\",\"gender\": \"男\",\"name\": \"张三\",\"qk\": [{\"q1\": \"001\",\"q2\": \"002\",\"q3\": \"003\"},{\"q1\": \"001\",\"q2\": \"002\",\"q3\": \"003\"}]},{\"age\": \"17\",\"gender\": \"男\",\"name\": \"李四\",\"qk\": {\"q1\": \"005\",\"q2\": \"006\",\"q3\": \"007\"}},{\"age\": \"19\",\"gender\": \"女\",\"name\": \"王五\",\"qk\": {\"q1\": \"008\",\"q2\": \"009\",\"q3\": \"010\"}}]}}");
System.out.println(xmlstr);
}
}
其中引入maven:
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.45</version>
</dependency>