场景：将日志文件里的对象字符串还原为 json 字符串以方便调试
package com.ygkj.util;
import com.alibaba.fastjson.JSON;
import javafx.util.Pair;
import org.apache.commons.lang3.StringUtils;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.regex.Pattern;
public class ToStringUtils {
/**
* toString格式反序列化
*/
/**
* 数字类型匹配（包括整形和浮点型） & 日期类型匹配 & 对象类型匹配 & ...
*/
public static Pattern datePattern = Pattern.compile("^[a-zA-Z]{3} [a-zA-Z]{3} [0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2} CST ((19|20)\\d{2})$");
public static Pattern numPattern = Pattern.compile("^-?[0-9]+\\.?[0-9]*$");
public static Pattern objectPattern = Pattern.compile("^[a-zA-Z0-9\\.]+\\(.+\\)$");
public static Pattern listPattern = Pattern.compile("^\\[.*\\]$");
public static Pattern mapPattern = Pattern.compile("^\\{.*\\}$");
public static Pattern supperPattern = Pattern.compile("^super=[a-zA-Z0-9\\.]+\\(.+\\)$");
public static final String NULL = "null";
/**
* toString -> json
*/
public static String toJSONString(String toString) throws ParseException {
return JSON.toJSONString(toMap(toString));
}
/**
* toString -> object
*/
public static <T> T toObject(String toString, Class<T> clazz) throws ParseException {
return JSON.parseObject(toJSONString(toString), clazz);
}
/**
* toString -> map
*/
private static Map<String, Object> toMap(String toString) throws ParseException {
if (StringUtils.isEmpty(toString = StringUtils.trim(toString))) {
return toString == null ? null : new HashMap<>();
}
// 移除最外层"()"
toString = StringUtils.substringAfter(toString, "(").trim();
toString = StringUtils.substringBeforeLast(toString, ")").trim();
String token;
Map<String, Object> map = new HashMap<>();
while (StringUtils.isNotEmpty(toString) && StringUtils.isNotEmpty(token =splitToken(toString))) {
toString = StringUtils.removeStart(StringUtils.removeStart(toString, token).trim(), ",").trim();
// 如果带"super="(lombok的@ToString(callSuper=true)引入)，按照当前层继续处理
if (supperPattern.matcher(token).matches()) {
token = token.substring(token.indexOf("(") + 1, token.length() - 1);
toString = String.format("%s,%s", token, toString);
continue;
}
Pair<String, String> keyValue = parseToken(token);
map.put(keyValue.getKey(), buildTypeValue(keyValue.getKey(), keyValue.getValue()));
}
return map;
}
static Pair<String, String> parseToken(String token) {
assert Objects.nonNull(token) && token.contains("=");
int pos = token.indexOf("=");
return new javafx.util.Pair<>(token.substring(0, pos), token.substring(pos + 1));
}
/**
* 单个token解析
*
* @param key 可根据key设置自定义序列化操作
*/
private static Object buildTypeValue(String key, String value) throws ParseException {
if (StringUtils.isEmpty(value)) {
return null;
} else if (value.equals(NULL)) {
return null;
}
// 日期类型
if (datePattern.matcher(value).matches()) {
return new SimpleDateFormat("EEE MMM dd HH:mm:ss Z yyyy", new Locale("us")).parse(value).getTime();
}
// 数字类型
if (numPattern.matcher(value).matches()) {
return value;
}
// 集合类型
if (listPattern.matcher(value).matches()) {
return buildListValue(value);
}
// map类型
if (mapPattern.matcher(value).matches()) {
return buildMapValue(value);
}
// 对象类型
if (objectPattern.matcher(value).matches()) {
return toMap(value);
}
// 其他都认为是string类型
return value;
}
/**
* 集合类型
*/
private static Object buildListValue(String value) throws ParseException {
List<Object> result = new ArrayList<>();
value = value.substring(1, value.length() - 1).trim();
if (StringUtils.isEmpty(value)) {
return result;
}
String token = null;
while (StringUtils.isNotBlank(value) && StringUtils.isNotBlank(token = splitToken(value))) {
result.add(buildTypeValue(null, token));
value = StringUtils.removeStart(StringUtils.removeStart(value, token).trim(), ",").trim();
}
return result;
}
static String splitToken(String toString) {
if (StringUtils.isBlank(toString)) {
return toString;
}
int bracketNum = 0;
Stack<Character> stack = new Stack<>();
for (int i = 0; i < toString.length(); i++) {
Character c = toString.charAt(i);
if (tokenMap.containsValue(c)) {
stack.push(c);
} else if (tokenMap.containsKey(c) && Objects.equals(stack.peek(), tokenMap.get(c))) {
stack.pop();
} else if ((c == ',') && stack.isEmpty()) {
return toString.substring(0, i);
}
}
if (stack.isEmpty()) {
return toString;
}
throw new RuntimeException("splitFirstToken error, bracketNum=" + bracketNum + ", toString=" + toString);
}
/**
* 获取第一个token，注意: toString不再包括最外层的()
*/
private final static Map<Character, Character> tokenMap = new HashMap<>();
static {
tokenMap.put(')', '(');
tokenMap.put('}', '{');
tokenMap.put(']', '[');
}
/**
* map类型
*/
private static Map<Object, Object> buildMapValue(String value) throws ParseException {
Map<Object, Object> result = new HashMap<>();
value = value.substring(1, value.length() - 1).trim();
if (StringUtils.isEmpty(value)) {
return result;
}
String token = null;
while (StringUtils.isNotEmpty(token =splitToken(value))) {
Pair<String, String> keyValue =parseToken(token);
result.put(buildTypeValue(keyValue.getKey(), keyValue.getKey()), buildTypeValue(keyValue.getKey(), keyValue.getValue()));
value = StringUtils.removeStart(StringUtils.removeStart(value, token).trim(), ",").trim();
}
return result;
}
}
测试：
String s =
"[AccountDTO(loginName=18628064506, name=18628064506, mobile=18628064506, authorizedBusiness=3, id=null, isEnable=1, certificateType=certificateType2, certificateNumber=110206198806120337, certificateStartDate=, certificateEndDate=, isLongEfficient=1, idCardFront=http://10.101.7.238:9000/main-platform/2023/02/17/ChatGPT_20230217161354A001.png, idCardBack=http://10.101.7.238:9000/main-platform/2023/02/17/ChatGPT_20230217161400A002.png, idCardHand=http://10.101.7.238:9000/main-platform/2023/02/17/ChatGPT_20230217161407A003.png, authorizationBook=http://10.101.7.238:9000/main-platform/2023/02/17/ChatGPT_20230217161619A004.png, authorizationBookName=ChatGPT.png)]";
System.out.println(ToStringUtils.toJSONString(s));
结果：
{
"authorizationBook":"http://10.101.7.238:9000/main-platform/2023/02/17/ChatGPT_20230217161619A004.png",
"mobile":"18628064506",
"idCardHand":"http://10.101.7.238:9000/main-platform/2023/02/17/ChatGPT_20230217161407A003.png",
"authorizedBusiness":"3",
"idCardFront":"http://10.101.7.238:9000/main-platform/2023/02/17/ChatGPT_20230217161354A001.png",
"isEnable":"1",
"isLongEfficient":"1",
"certificateNumber":"110206198806120337",
"loginName":"18628064506",
"name":"18628064506",
"authorizationBookName":"ChatGPT.png",
"idCardBack":"http://10.101.7.238:9000/main-platform/2023/02/17/ChatGPT_20230217161400A002.png",
"certificateType":"certificateType2"
}