deletejson
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package testjson;import java.util.ArrayList;import java.util.Collections;import java.util.Iterator;import java.util.LinkedHashMap;import java.util.List;import java.util.Map;import java.util.Map.Entry;import java.util.Set;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONObject;import com.alibaba.fastjson.JSONPath;import com.google.gson.Gson;import com.google.gson.JsonArray;import com.google.gson.JsonElement;import com.google.gson.JsonObject;import com.google.gson.JsonParser;import com.google.gson.JsonPrimitive;public class TestJson {public static void main(String[] args){ String jsonData = "{aaa:[{\"name\":\"Michael\",\"age\":20,\"address\":{\"Long_name\":\"4long\",\"short_name\":\"4short\"},\"wife\":[{\"wifename\":\"Mike1\",\"wifena2\":\"Mike1kiss\"},{\"wifename\":\"Mike2\",\"wifena2\":\"fdsMike1kisser\"},{\"wifename\":\"Mike3\"}]},{\"name\":\"Mike\",\"age\":21,\"address\":{\"Long_name\":\"1long\",\"short_name\":\"1short\"}}],\"bb\":\"sdfsdf\"}"; // 解析获取整个json结构集合 JsonParser parser = new JsonParser(); JsonElement element = parser.parse(jsonData); JsonObject jo= element.getAsJsonObject(); //JsonArray jo = element.getAsJsonArray(); //LinkedHashMap<String,Object> elementmap=new LinkedHashMap<String,Object>(); // recJson(element,"root");//解析 // String[] s="aaa[0].age".split("\\.");// System.out.println(s[0]);// System.out.println(s[1]);// // System.out.println( "aaa[0].age".indexOf("."));// // System.out.println("aaa[0].age".substring("aaa[0].age".indexOf(".")));// System.out.println("aaa[0].age".contains("[0]")); // // System.out.println("aaa[0].age".replaceAll("\\[0\\]", "")); // JsonObject jsonObject= element.getAsJsonObject(); System.out.println(jsonData); JSONObject jsonObject = JSON.parseObject(jsonData); //1.取出命令集合 //2.解析命令 /*String[] paths ="aaa[0].age".split("\\."); String pathadd="$"; List<Integer> arraylist=new ArrayList<Integer>(); for(int i=0;i<paths.length;i++){ if(paths[i].endsWith("[0]")){ pathadd=pathadd+"."+paths[i].substring(0, paths[i].length()-4); int length=(Integer)JSONPath.eval(jsonObject, pathadd+".size()"); if(length>0){ arraylist.add(length); }else{ break; } } pathadd+="."+paths[i]; } int maxint= Collections.max(arraylist);*/// JSONPath j=new JSONPath("$.aaa.age");// j.removeArrayItem(path, currentObject, index) //paths /* List<String> names = (List<String>)JSONPath.eval(jsonObject, "$.aaa[3].age"); System.out.println(jsonObject.toString());*/ /* JSONObject jsonObject = JSON.parseObject(jsonData); Map<String, Object> hashMap = JSONPath.paths(jsonObject); Iterator iterator =hashMap.keySet().iterator(); while(iterator.hasNext()){ System.out.println(iterator.next()); }*/ // Gson g=new Gson(); //g.fromJson(json, classOfT) // String author = JsonPath.read(json, "$.store.book[0].author"); // 删除 /* List<Integer> l=new ArrayList<Integer>(); maxArrayLength(element,l); System.out.println(l.size()); if(l.size()>0){ System.out.println(l.get(0)); System.out.println(l.get(1)); Integer maxlength=l.get(0); String filestr= "aaa[0].wife[0].wifena2"; for(int i=0;i<maxlength;i++){ String commend="$."+filestr.replaceAll("\\[0\\]", "["+i+"]"); JSONPath.remove(jsonObject, commend); } }*/ System.out.println(jsonObject.toString()); List<String> ls=new ArrayList<String>(); maxArrayLength2(element,"$","aaa[0].wife[0].wifena2",ls); for(String c:ls){ System.out.println(c); } //统一删除 deleteJsonPorperty(jsonObject,"aaa[0].wife[0].wifena2"); System.out.println(jsonObject.toString()); //JSONObject jsonObject = JSON.parseObject(jsonData);}public static void recJson(JsonElement element,String keyname){if(element==null||element.isJsonNull()){return;}else if(element.isJsonArray()){//JsonArray jsonArray= element.getAsJsonArray();//for(int i=0;i<jsonArray.size();i++){//System.out.print("[0]"); if(jsonArray.size()>0){ JsonElement jsonElement= jsonArray.get(0); recJson(jsonElement,keyname+"[0]"); }//}//jsonArray.get}else if(element.isJsonObject()){JsonObject jsonObject =element.getAsJsonObject(); for (Entry<String, JsonElement> entry : jsonObject.entrySet()) { String name = entry.getKey(); JsonElement jsonElement = entry.getValue(); //System.out.print("."+name); // elementmap.put(name, value); recJson(jsonElement,keyname+"."+name); }}else if(element.isJsonPrimitive()){JsonPrimitive jsonPrimitive=element.getAsJsonPrimitive();if(jsonPrimitive.isBoolean()){System.out.print(keyname+" Boolean");}else if(jsonPrimitive.isNumber()){System.out.print(keyname+" Number");}else if(jsonPrimitive.isString()){System.out.print(keyname+" String");}else{System.out.print(keyname+" 未知");}; System.out.println();return ;}}public static void deleteJsonPorperty(JSONObject jsonObject,String removePath){ if(removePath.contains("[")||removePath.contains("]")){ List<String> ls=new ArrayList<String>(); JsonParser parser = new JsonParser(); JsonElement element = parser.parse(jsonObject.toJSONString()); maxArrayLength2(element,"$",removePath,ls); for(String s:ls){ JSONPath.remove(jsonObject, s); } }else{ JSONPath.remove(jsonObject, removePath); }}/** * aaa[0].age * @deprecated * ***/public static void removeJsonPorperty(JsonElement element,String removePath){String removePerport=removePath.split("\\.")[0]; if(removePerport.contains("[0]")){ removePerport=removePerport.replaceAll("\\[0\\]", ""); } if(element==null||element.isJsonNull()){ return; }else if(element.isJsonArray()){removePath=removePath.substring(removePath.indexOf(".")+1);JsonArray jsonArray=element.getAsJsonArray(); for(int i=0;i<jsonArray.size();i++){ JsonElement element1= jsonArray.get(i); removeJsonPorperty(element1,removePath); element1.toString(); } }else if(element.isJsonObject()){if(removePath.indexOf(".")!=-1){ removePath=removePath.substring(removePath.indexOf(".")+1); JsonObject jsonObject=element.getAsJsonObject(); jsonObject.entrySet(); JsonElement element1= jsonObject.get(removePerport); removeJsonPorperty(element1,removePath);}else{JsonObject jsonObject=element.getAsJsonObject();jsonObject.remove(removePath);return;} }}public static void maxArrayLength(JsonElement element,List l){if(element==null||element.isJsonNull()){return;}else if(element.isJsonArray()){JsonArray ja= element.getAsJsonArray();Integer length= ja.size();/*if(l.size()<=0){ l.add(length); l.add(1);}else{ l.set(0, Math.max(((Integer)l.get(0)), ja.size())); l.set(1, l.get(1)+1);}*/ for(int i=0;i<length;i++){ maxArrayLength(ja.get(i),l); }}else if(element.isJsonObject()){JsonObject j= element.getAsJsonObject();Set<Entry<String, JsonElement>> sets= j.entrySet();for(Entry<String, JsonElement> e:sets){ maxArrayLength(e.getValue(),l);}}else{return ;}}public static void maxArrayLength2(JsonElement element, String keyname, String deletefildstr, List<String> deleitemcommand){if(element==null||element.isJsonNull()){return;}else if(element.isJsonArray()){//JsonArray jsonArray= element.getAsJsonArray();//for(int i=0;i<jsonArray.size();i++){//System.out.print("[0]"); if(jsonArray.size()>0){for(int i=0;i<jsonArray.size();i++){ JsonElement jsonElement= jsonArray.get(i); maxArrayLength2(jsonElement,keyname+"["+i+"]",deletefildstr,deleitemcommand); } }//}//jsonArray.get}else if(element.isJsonObject()){JsonObject jsonObject =element.getAsJsonObject(); for (Entry<String, JsonElement> entry : jsonObject.entrySet()) { String name = entry.getKey(); JsonElement jsonElement = entry.getValue(); //System.out.print("."+name); // elementmap.put(name, value); maxArrayLength2(jsonElement,keyname+"."+name,deletefildstr,deleitemcommand); }}else if(element.isJsonPrimitive()){JsonPrimitive jsonPrimitive=element.getAsJsonPrimitive();//if(jsonPrimitive.isBoolean()){//System.out.print(keyname+"");//}else if(jsonPrimitive.isNumber()){//System.out.print(keyname+"");//}else if(jsonPrimitive.isString()){//System.out.print(keyname+"");//}else{//System.out.print(keyname+"");//};// System.out.println(); String keynamepathwithoutarrayindex =keyname.replaceAll("\\[\\d\\]", ""); String deletefildstrwithoutarrayindex =deletefildstr.replaceAll("\\[0\\]", ""); if(keynamepathwithoutarrayindex.endsWith(deletefildstrwithoutarrayindex)){ deleitemcommand.add(keyname); } return ;}}} 0 0
