如何在java / android中将字符串转换为布尔条件？

我正在研究调查应用程序并从服务器获取数据。 我在将String转换为布尔条件时遇到问题，布尔条件是String格式。 这是条件。 我在网上搜索过很多但没找到解决办法。 我已经阅读了一些与之相关的post，但没有帮助。

http://www.java-examples.com/convert-java-string-object-boolean-object http://beginnersbook.com/2014/07/convert-string-to-boolean-primitive-in-java/ http ：//www.tutorialspoint.com/java/lang/boolean_parseboolean.htm

String s = "{hidSection=if(((Q4a.NAOK==\"5\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"6\" && Q4b.NAOK==\"6\") || (Q4a.NAOK==\"6\" && Q4b.NAOK==\"7\")|| \n" + " (Q4a.NAOK==\"7\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"7\" && Q4b.NAOK==\"6\") || (Q4a.NAOK==\"7\" && Q4b.NAOK==\"7\")|| \n" + " (Q4a.NAOK==\"8\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"6\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"7\"))\n" + " ,1,if(((Q4a.NAOK==\"4\" && Q4b.NAOK==\"6\") || (Q4a.NAOK==\"4\" && Q4b.NAOK==\"7\") || (Q4a.NAOK==\"5\" && Q4b.NAOK==\"5\")||\n" + " (Q4a.NAOK==\"5\" && Q4b.NAOK==\"6\")|| (Q4a.NAOK==\"7\" && Q4b.NAOK==\"3\") || (Q4a.NAOK==\"6\" && Q4b.NAOK==\"5\")|| \n" + " (Q4a.NAOK==\"7\" && Q4b.NAOK==\"4\")|| (Q4a.NAOK==\"8\" && Q4b.NAOK==\"6\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"7\")|| \n" + " (Q4a.NAOK==\"11\" && Q4b.NAOK==\"6\")|| (Q4a.NAOK==\"11\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"5\"))\n" + " ,2,if(((Q4a.NAOK==\"4\" && Q4b.NAOK==\"5\") || (Q4a.NAOK==\"5\" && Q4b.NAOK==\"4\")|| (Q4a.NAOK==\"6\" && Q4b.NAOK==\"4\")|| \n" + " (Q4a.NAOK==\"7\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"7\" && Q4b.NAOK==\"2\")|| (Q4a.NAOK==\"8\" && Q4b.NAOK==\"5\")|| \n" + " (Q4a.NAOK==\"9\" && Q4b.NAOK==\"6\")|| (Q4a.NAOK==\"9\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"6\")|| \n" + " (Q4a.NAOK==\"11\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"2\")|| \n" + " (Q4a.NAOK==\"12\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"4\"))\n" + " ,3,if(((Q4a.NAOK==\"2\" && Q4b.NAOK==\"6\") || (Q4a.NAOK==\"2\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"3\" && Q4b.NAOK==\"6\")|| \n" + " (Q4a.NAOK==\"3\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"4\" && Q4b.NAOK==\"4\")|| (Q4a.NAOK==\"5\" && Q4b.NAOK==\"3\")|| \n" + " (Q4a.NAOK==\"6\" && Q4b.NAOK==\"2\")|| (Q4a.NAOK==\"6\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"8\" && Q4b.NAOK==\"4\")|| \n" + " (Q4a.NAOK==\"9\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"11\" && Q4b.NAOK==\"4\"))\n" + " ,4,if(((Q4a.NAOK==\"2\" && Q4b.NAOK==\"4\") || (Q4a.NAOK==\"2\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"3\" && Q4b.NAOK==\"4\")|| (Q4a.NAOK==\"3\" && Q4b.NAOK==\"5\")|| \n" + " (Q4a.NAOK==\"4\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"5\" && Q4b.NAOK==\"2\")|| (Q4a.NAOK==\"6\" && Q4b.NAOK==\"1\")|| \n" + " (Q4a.NAOK==\"9\" && Q4b.NAOK==\"4\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"4\")|| \n" + " (Q4a.NAOK==\"11\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"11\" && Q4b.NAOK==\"2\")|| (Q4a.NAOK==\"11\" && Q4b.NAOK==\"3\"))\n" + " ,5,if(((Q4a.NAOK==\"1\" && Q4b.NAOK==\"4\") || (Q4a.NAOK==\"1\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"1\" && Q4b.NAOK==\"6\")|| \n" + " (Q4a.NAOK==\"1\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"2\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"3\" && Q4b.NAOK==\"2\")|| \n" + " (Q4a.NAOK==\"3\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"4\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"4\" && Q4b.NAOK==\"2\")|| \n" + " (Q4a.NAOK==\"5\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"8\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"8\" && Q4b.NAOK==\"2\")|| \n" + " (Q4a.NAOK==\"8\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"9\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"9\" && Q4b.NAOK==\"2\")|| \n" + " (Q4a.NAOK==\"9\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"2\"))\n" + " ,6,if(((Q4a.NAOK==\"1\" && Q4b.NAOK==\"3\") || (Q4a.NAOK==\"2\" && Q4b.NAOK==\"2\"))\n" + " ,7,if(((Q4a.NAOK==\"1\" && Q4b.NAOK==\"1\") || (Q4a.NAOK==\"1\" && Q4b.NAOK==\"2\") || (Q4a.NAOK==\"2\" && Q4b.NAOK==\"1\") || \n" + " (Q4a.NAOK==\"3\" && Q4b.NAOK==\"1\"))\n" + " ,8,\"\"))))))))}"; 

我按照链接 。 但没有帮助我。 如何将字符串转换为布尔条件？

Answer 1

从服务器返回代码非常可怕。 无论如何，这段代码我给你做了一些步骤：

1. 从输入中删除新行和多空格到一个长度空间。
2. 通过模式查找单词，其中单词以if开头并以数字结尾。 将它们添加到数组中。
3. 准备模式与用户选择的选项组合成类似于(Q4a.NAOK==\"7\" && Q4b.NAOK==\"5\") （答案1和答案2）。
4. 检查数组是否包含第3点中的单词。如果找到，则保留数组中的单词并用逗号分隔。 分裂的第二个词就是答案。

---

 private void doStuff() { int answer1 = 2; int answer2 = 1; String s = "{hidSection=if(((Q4a.NAOK==\"5\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"6\" && Q4b.NAOK==\"6\") || (Q4a.NAOK==\"6\" && Q4b.NAOK==\"7\")|| \n" + " (Q4a.NAOK==\"7\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"7\" && Q4b.NAOK==\"6\") || (Q4a.NAOK==\"7\" && Q4b.NAOK==\"7\")|| \n" + " (Q4a.NAOK==\"8\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"6\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"7\"))\n" + " ,1,if(((Q4a.NAOK==\"4\" && Q4b.NAOK==\"6\") || (Q4a.NAOK==\"4\" && Q4b.NAOK==\"7\") || (Q4a.NAOK==\"5\" && Q4b.NAOK==\"5\")||\n" + " (Q4a.NAOK==\"5\" && Q4b.NAOK==\"6\")|| (Q4a.NAOK==\"7\" && Q4b.NAOK==\"3\") || (Q4a.NAOK==\"6\" && Q4b.NAOK==\"5\")|| \n" + " (Q4a.NAOK==\"7\" && Q4b.NAOK==\"4\")|| (Q4a.NAOK==\"8\" && Q4b.NAOK==\"6\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"7\")|| \n" + " (Q4a.NAOK==\"11\" && Q4b.NAOK==\"6\")|| (Q4a.NAOK==\"11\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"5\"))\n" + " ,2,if(((Q4a.NAOK==\"4\" && Q4b.NAOK==\"5\") || (Q4a.NAOK==\"5\" && Q4b.NAOK==\"4\")|| (Q4a.NAOK==\"6\" && Q4b.NAOK==\"4\")|| \n" + " (Q4a.NAOK==\"7\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"7\" && Q4b.NAOK==\"2\")|| (Q4a.NAOK==\"8\" && Q4b.NAOK==\"5\")|| \n" + " (Q4a.NAOK==\"9\" && Q4b.NAOK==\"6\")|| (Q4a.NAOK==\"9\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"6\")|| \n" + " (Q4a.NAOK==\"11\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"2\")|| \n" + " (Q4a.NAOK==\"12\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"12\" && Q4b.NAOK==\"4\"))\n" + " ,3,if(((Q4a.NAOK==\"2\" && Q4b.NAOK==\"6\") || (Q4a.NAOK==\"2\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"3\" && Q4b.NAOK==\"6\")|| \n" + " (Q4a.NAOK==\"3\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"4\" && Q4b.NAOK==\"4\")|| (Q4a.NAOK==\"5\" && Q4b.NAOK==\"3\")|| \n" + " (Q4a.NAOK==\"6\" && Q4b.NAOK==\"2\")|| (Q4a.NAOK==\"6\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"8\" && Q4b.NAOK==\"4\")|| \n" + " (Q4a.NAOK==\"9\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"11\" && Q4b.NAOK==\"4\"))\n" + " ,4,if(((Q4a.NAOK==\"2\" && Q4b.NAOK==\"4\") || (Q4a.NAOK==\"2\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"3\" && Q4b.NAOK==\"4\")|| (Q4a.NAOK==\"3\" && Q4b.NAOK==\"5\")|| \n" + " (Q4a.NAOK==\"4\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"5\" && Q4b.NAOK==\"2\")|| (Q4a.NAOK==\"6\" && Q4b.NAOK==\"1\")|| \n" + " (Q4a.NAOK==\"9\" && Q4b.NAOK==\"4\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"4\")|| \n" + " (Q4a.NAOK==\"11\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"11\" && Q4b.NAOK==\"2\")|| (Q4a.NAOK==\"11\" && Q4b.NAOK==\"3\"))\n" + " ,5,if(((Q4a.NAOK==\"1\" && Q4b.NAOK==\"4\") || (Q4a.NAOK==\"1\" && Q4b.NAOK==\"5\")|| (Q4a.NAOK==\"1\" && Q4b.NAOK==\"6\")|| \n" + " (Q4a.NAOK==\"1\" && Q4b.NAOK==\"7\")|| (Q4a.NAOK==\"2\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"3\" && Q4b.NAOK==\"2\")|| \n" + " (Q4a.NAOK==\"3\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"4\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"4\" && Q4b.NAOK==\"2\")|| \n" + " (Q4a.NAOK==\"5\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"8\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"8\" && Q4b.NAOK==\"2\")|| \n" + " (Q4a.NAOK==\"8\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"9\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"9\" && Q4b.NAOK==\"2\")|| \n" + " (Q4a.NAOK==\"9\" && Q4b.NAOK==\"3\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"1\")|| (Q4a.NAOK==\"10\" && Q4b.NAOK==\"2\"))\n" + " ,6,if(((Q4a.NAOK==\"1\" && Q4b.NAOK==\"3\") || (Q4a.NAOK==\"2\" && Q4b.NAOK==\"2\"))\n" + " ,7,if(((Q4a.NAOK==\"1\" && Q4b.NAOK==\"1\") || (Q4a.NAOK==\"1\" && Q4b.NAOK==\"2\") || (Q4a.NAOK==\"2\" && Q4b.NAOK==\"1\") || \n" + " (Q4a.NAOK==\"3\" && Q4b.NAOK==\"1\"))\n" + " ,8,\"\"))))))))}"; String answer = getAnswer(answer1, answer2, s); Log.d("xxx", "answer:" + answer); } private String getAnswer(int answer1, int answer2, String s) { //remove spaces 2 or more length and replace to 1 s = s.replaceAll("\n", ""); s = s.replaceAll("\\s+", " "); ArrayList states = new ArrayList(); Pattern p = Pattern.compile("if\\({3}.*?\\,\\d+"); Matcher m = p.matcher(s); while (m.find()) { states.add(m.group()); } String stateFormat = "Q4a.NAOK==\"%d\" && Q4b.NAOK==\"%d\""; String stateFormatted = String.format(stateFormat, answer1, answer2); for (int i = 0; i < states.size(); i++) { if (states.get(i).contains(stateFormatted)) { String[] items = states.get(i).split(","); if (items.length > 1) { return items[1].trim(); } } } return null;//or null or integer -1 }