在平时的工作中经常遇到Java对象toString()之后打印出来,在发生线上问题时需要参数重新调用时,无法转化参数
如下图:
[TransOccupyRequestDTO(newOrderId=390310807, transOccupyDetails=[TransOccupyDetail(orderId=389507562, orderType=3Sent, orderListId=811181368, newOrderId=390310807, newOrderListId=812635303, batchId=197987597, num=2), TransOccupyDetail(orderId=389507562, orderType=3Sent, orderListId=811181368, newOrderId=390310807, newOrderListId=812635303, batchId=197987597, num=1), TransOccupyDetail(orderId=389507562, orderType=3Sent, orderListId=811181369, newOrderId=390310807, newOrderListId=811181369, batchId=202747933, num=4)])]
下面是一个工具类实现Java对象转化成json
import com.alibaba.fastjson.JSON;
import javafx.util.Pair;
import org.apache.commons.lang.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 toObject(String toString, Class clazz) throws ParseException {
return JSON.parseObject(toJSONString(toString), clazz);
}
/**
* toString -> map
*/
private static Map 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 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 keyValue = parseToken(token);
map.put(keyValue.getKey(), buildTypeValue(keyValue.getKey(), keyValue.getValue()));
}
return map;
}
static Pair 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
最终测试结果
String str="[TransOccupyRequestDTO(newOrderId=390310807, transOccupyDetails=[TransOccupyDetail(orderId=389507562, orderType=3Sent, orderListId=811181368, newOrderId=390310807, newOrderListId=812635303, batchId=197987597, num=2), TransOccupyDetail(orderId=389507562, orderType=3Sent, orderListId=811181368, newOrderId=390310807, newOrderListId=812635303, batchId=197987597, num=1), TransOccupyDetail(orderId=389507562, orderType=3Sent, orderListId=811181369, newOrderId=390310807, newOrderListId=811181369, batchId=202747933, num=4)])]"; TransOccupyRequestDTO transOccupyRequestDTO = ToStringUtils.toObject(str,TransOccupyRequestDTO.class); System.out.println(JSON.toJSON(transOccupyRequestDTO));
Connected to the target VM, address: '127.0.0.1:62799', transport: 'socket'
{"newOrderId":390310807,"transOccupyDetails":[{"orderType":"3Sent","orderListId":811181368,"orderId":389507562,"newOrderId":390310807,"newOrderListId":812635303,"num":2,"batchId":197987597},{"orderType":"3Sent","orderListId":811181368,"orderId":389507562,"newOrderId":390310807,"newOrderListId":812635303,"num":1,"batchId":197987597},{"orderType":"3Sent","orderListId":811181369,"orderId":389507562,"newOrderId":390310807,"newOrderListId":811181369,"num":4,"batchId":202747933}]}
Disconnected from the target VM, address: '127.0.0.1:62799', transport: 'socket'