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@jenslohmann
Last active June 20, 2022 08:53
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Java toString() generator for IntelliJ IDEA that generates JSON
public java.lang.String toString() {
#if ( $members.size() > 0 )
#set ( $i = 0 )
return "{\"_class\":\"$classname\", " +
#foreach( $member in $members )
#set ( $i = $i + 1 )
#if ( $i == $members.size() )
#set ( $postfix = "+" )
#else
#set ( $postfix = "+ "", "" + " )
#end
#if ( $member.collection )
"\"$member.name\":" + ($member.accessor == null ? "null" : java.util.Arrays.toString($member.accessor.toArray())) $postfix
#elseif ( $member.objectArray )
"\"$member.name\":" + java.util.Arrays.toString($member.accessor) $postfix
#elseif ( $member.primitiveArray )
"\"$member.name\":" + java.util.Arrays.toString($member.accessor) $postfix
#elseif ( $member.object )
#if ($member.typeQualifiedName.contains("java.lang"))
"\"$member.name\":" + ($member.accessor == null ? "null" : "\"" + $member.accessor + "\"" ) $postfix
#else
"\"$member.name\":" + ($member.accessor == null ? "null" : $member.accessor ) $postfix
#end
#else
"\"$member.name\":\"" + $member.accessor + "\"" $postfix
#end
#end
"}";
#else
return "{\"_class\":\"$classname\"}";
#end
}
@xuhuanfeng
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xuhuanfeng commented Oct 22, 2018

Hi, There may be a bug for list member , for example, said I have an obj contain a List<String> list, above code will generate "name": [mem1, ,mem2, ...] which actually no a json string.

@lourencomcviana
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One little detail, if the string has double quotes inside this generator will give an error.
Example: my chocolate was "delicious" but it was not
this will be cast to "my chocolate was "delicious" but it was not" and is not a valid string

i solved this using a very lazy method

.....
       #elseif ( $member.object )
            #if ($member.typeQualifiedName.contains("java.lang"))
            "\"$member.name\":" + ($member.accessor == null ? "null" : "\"" + $member.accessor + "\"" ) $postfix
            #else
            "\"$member.name\":" + ($member.accessor == null ? "null" : $member.accessor .toString().replaceAll("\"","'") ) $postfix
            #end
        #else
....

@fabiojb
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fabiojb commented Jul 24, 2020

Line 13 has an invalid space that breaks the script:

... java.util.Arrays.toString($member.accessor .toArray())) ....

should be changed to

... java.util.Arrays.toString($member.accessor.toArray())) ...

@IAFahim
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IAFahim commented Sep 12, 2021

can't we fix for number
{"_class":"Residents", "name":"John Smith", "nid":"19752533333333333", "salary":"30000.0"}
to
{"_class":"Residents", "name":"John Smith", "nid":19752533333333333, "salary":30000.0}

@Attacktive
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$member.accessor.toArray() needs to be something like $member.accessor .toArray() at line 13.
$member.accessor.toArray() gets printed literally otherwise.

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