JAVA中如何从字符串（字符数组）中提取键值

对不起，如果有人问这个问题之前，但我无法找到相对的

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

我的问题是

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

像这样的字符串->{“value”：123，“key”：abc}

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

换成=>

String str = ['"','v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','"']; // char array

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

str[0]将是”，str[1]将是v

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

所以我想知道，如果我想通过这个函数获取值，是否有可能。 比方说

str.getString("value") = 123  <- output expecting

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

但对我来说什么都不管用。 有人能帮我吗

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

有没有办法让我得到这样的答案

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

str.get（“value”）=123

---

str.get（“key”）=abc

可能分别使用

{

和

}

更新char数组中的第一个和最后一个元素

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

从中构造一个字符串

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

在JSONObject中解析它，然后您可以获取所需的内容

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

示例代码：

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

输出

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

123

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

---

可能分别使用

{

和

}

更新char数组中的第一个和最后一个元素

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

从中构造一个字符串

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

在JSONObject中解析它，然后您可以获取所需的内容

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

示例代码：

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

输出

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

123

        Character[] str = {'{', 'v','a','l','u','e',':','1','2','3',',','k','e','y',':','a','b','c','}'};
        StringBuilder sb = new StringBuilder(str.length);
        for (Character c : str)
            sb.append(c.charValue());
        String strb = sb.toString();

        JSONObject obj = new JSONObject(strb);

        System.out.print(obj.get("value"));

---

可能重复的你必须付出更多的努力才能完成，可能重复的你正在接收字符数组或字符串数组？可能重复的你必须付出更多的努力才能完成，可能重复的你正在接收字符数组或字符串数组？谢谢这可以是一个答案，但这是蛮力，我是卢国王的一些优化解决方案或任何图书馆..谢谢这可以是一个答案之一，但这是蛮力，我正在寻找一些优化解决方案或任何图书馆。。