java 获取JSONObject中“键”与“值”
今天刚写的原创代码。在网上找了好久没找到,可以从JSON中解析到key的方法。于是自己动手写了一个方法。
/**
* 将json键值对分别解析到数组中
*
* @param jsonject
* 需要解析的json对象
* @param type
* 决定返回值的内容:键或值
* @return type="key":返回json对象中"键"的字符串, type="key""value":返回json对象中"值"的字符串
*/
private String[] analyzeJsonToArray(JSONObject jsonject, String type) {
String string = jsonject.toString();
string = string.replace("}", "");
string = string.replace("{", "");
string = string.replace("\"", "");
String[] strings = string.split(",");
if (type.equals("key")) {
String[] stringsNum = new String[strings.length];
for (int i = 0; i < strings.length; i++) {
stringsNum[i] = strings[i].split(":")[0];
}
return stringsNum;
} else if (type.equals("value")) {
String[] stringsName = new String[strings.length];
for (int i = 0; i < strings.length; i++) {
stringsName[i] = strings[i].split(":")[1];
}
return stringsName;
} else {
return null;
}
}
------解决方案--------------------输出:
1
2
3
4
5
6
7
8
9
10
11
12
13
------解决方案--------------------看哥这个狗成熟不 公司用好几年了 。
package com.cmmb.utils;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
public class JsonUtils {
public static String encodeList(Object[] objs) {
return encodeList(Arrays.asList(objs));
}
@SuppressWarnings("unchecked")
public static String encodeList(Collection objs) {
JSONArray list = new JSONArray();
if (objs == null
------解决方案-------------------- objs.size() == 0)
return list.toString();
for (Object ae : objs) {
list.add(ae);
}
return list.toString();
}
@SuppressWarnings("unchecked")
public static String encodeObject(Object obj){
if(obj instanceof Collection)
return encodeList((Collection)obj);
JSONObject jo = JSONObject.fromObject(obj);
return jo.toString();
}
@SuppressWarnings("unchecked")
public static <T>List<T> decodeList(String str, Class<T> clazz) {
if (str == null
------解决方案-------------------- "".equals(str))
return null;
JSONArray obj = JSONArray.fromObject(str);
Object[] rts = obj.toArray();
List<T> result = new ArrayList<T>(rts.length);
for (int i = 0; i < rts.length; i++) {
Object jo = rts[i];
T ele = (T)JSONObject.toBean((JSONObject) jo, clazz);
result.add( ele );
}
return result;
}
@SuppressWarnings("unchecked")
public static <T>T decodeObject(String json,Class<T> clz){
JSONObject jsonObject = JSONObject.fromObject(json);
T bean = (T) JSONObject.toBean(jsonObject, clz);
return bean;
}
}