package per.son.utils;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.json.JSONArray;
import org.json.JSONObject;
public class StringUtil {
/**
* 字符串转换JSONObject
* @param string
* @return
*/
public static JSONObject String2Json(String string){
if(string == null){
return null;
}
String jsonString = string.trim();
if(jsonString.startsWith("{") && jsonString.endsWith("}")){
JSONObject jb = null;
try {
jb = new JSONObject(jsonString);
return jb;
}catch (Exception e) {
return null;
}
}else if(jsonString.startsWith("[") && jsonString.endsWith("]")){
JSONArray ja = null;
try {
ja = new JSONArray(jsonString);
return (JSONObject)ja.get(0);
}catch(Exception e){
return null;
}
}
return null;
}
/**
* 正则匹配出想要的字符串
* @param regex
* @param Content
* @param groupNum
* @return
*/
public static String getRegexStr(String regex, String Content,int groupNum){
Pattern compile = Pattern.compile(regex);
Matcher m = compile.matcher(Content);
while(m.find()){
String group = m.group(groupNum);
if(null != group){
return group;
}
}
return null;
}
}