Java 正则表达式 - 嵌套对象

Question

I am using Regular Expression in java to separate out groups in nested object as shown below.

properties={
    prop1={boolean=null, string=null, byte=null, double=null, propertyType=integer, short=null, integer=1, float=null, long=null}, 
    prop2={boolean=null, string=appId=854*tmp=159347540*temp4=469db7a0-d416-4fa5-856e-e26c33532559d*ts=1604594951147*btid=130324792*guid=72ee83438-6ece-40a4-9da4-2712fb296977*exitguid=13*unresolvedexitid=15015439*cidfrom=32324647*etypeorder=JMS*esubtype=JMS*cidto={[UNRESOLVED][150342]}, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null}, 
    prop3={boolean=true, string=null, byte=null, double=null, propertyType=boolean, short=null, integer=null, float=null, long=null}, 
    prop4={boolean=null, string=TEST, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null}, 
    prop5={boolean=null, string=TEST2, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null}, 
    prop6={boolean=true, string=null, byte=null, double=null, propertyType=boolean, short=null, integer=null, float=null, long=null}
}

The output I am trying to get is

Group1 ---> prop1={boolean=null, string=null, byte=null, double=null, propertyType=integer, short=null, integer=1, float=null, long=null}, 
Group2 ---> prop2={boolean=null, string=appId=854*tmp=159347540*temp4=469db7a0-d416-4fa5-856e-e26c33532559d*ts=1604594951147*btid=130324792*guid=72ee83438-6ece-40a4-9da4-2712fb296977*exitguid=13*unresolvedexitid=15015439*cidfrom=32324647*etypeorder=JMS*esubtype=JMS*cidto={[UNRESOLVED][150342]}, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null}, 
Group3 ---> prop3={boolean=true, string=null, byte=null, double=null, propertyType=boolean, short=null, integer=null, float=null, long=null}, 
Group4 ---> prop4={boolean=null, string=TEST, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null}, 
Group5 --->prop5={boolean=null, string=TEST2, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null}, 
Group6 ---> prop6={boolean=true, string=null, byte=null, double=null, propertyType=boolean, short=null, integer=null, float=null, long=null}

I have tried the expressions below

(s*={[^{[]*})+
(\w+={[^{[]+})+

Because of complexity of string in Prop2 , my expression ignores Prop2 . How can I update my expression to capture Prop2 as well.

Answer 1

Try this instead...

\w+=\{.*\}

Dot doesn't match newlines.

Answer 2

This might help:

Using Pattern:

Pattern.compile("^\\s+(\\w+=\\{.*\\},)", Pattern.MULTILINE)

Pattern in context:

public static void main(String[] args) {
    String input = "properties={\n"
            + "    prop1={boolean=null, string=null, byte=null, double=null, propertyType=integer, short=null, integer=1, float=null, long=null}, \n"
            + "    prop2={boolean=null, string=appId=854*tmp=159347540*temp4=469db7a0-d416-4fa5-856e-e26c33532559d*ts=1604594951147*btid=130324792*guid=72ee83438-6ece-40a4-9da4-2712fb296977*exitguid=13*unresolvedexitid=15015439*cidfrom=32324647*etypeorder=JMS*esubtype=JMS*cidto={[UNRESOLVED][150342]}, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null}, \n"
            + "    prop3={boolean=true, string=null, byte=null, double=null, propertyType=boolean, short=null, integer=null, float=null, long=null}, \n"
            + "    prop4={boolean=null, string=TEST, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null}, \n"
            + "    prop5={boolean=null, string=TEST2, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null}, \n"
            + "    prop6={boolean=true, string=null, byte=null, double=null, propertyType=boolean, short=null, integer=null, float=null, long=null}\n"
            + "}";

    Matcher matcher = Pattern.compile("^\\s+(\\w+=\\{.*\\},)", Pattern.MULTILINE).matcher(input);

    List<String> result = new ArrayList<>();
    while(matcher.find()) {
        result.add(matcher.group(1));
    }

    result.forEach(s -> System.out.println(s));
}

Output:

prop1={boolean=null, string=null, byte=null, double=null, propertyType=integer, short=null, integer=1, float=null, long=null},
prop2={boolean=null, string=appId=854*tmp=159347540*temp4=469db7a0-d416-4fa5-856e-e26c33532559d*ts=1604594951147*btid=130324792*guid=72ee83438-6ece-40a4-9da4-2712fb296977*exitguid=13*unresolvedexitid=15015439*cidfrom=32324647*etypeorder=JMS*esubtype=JMS*cidto={[UNRESOLVED][150342]}, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null},
prop3={boolean=true, string=null, byte=null, double=null, propertyType=boolean, short=null, integer=null, float=null, long=null},
prop4={boolean=null, string=TEST, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null},
prop5={boolean=null, string=TEST2, byte=null, double=null, propertyType=string, short=null, integer=null, float=null, long=null},