AposTest.java

import java.util.Map;
import org.springframework.expression.ExpressionParser;
import org.springframework.expression.spel.SpelParseException;
import org.springframework.expression.spel.standard.SpelExpressionParser;

public class AposTest {
    public static void main(String[] args) {
        // Parse of {NormalValue:'INGREDIENT', 'Apostro''Value':'INGREDIENT'} failed with: EL1043E:(pos 12): Unexpected token.  Expected 'rcurly(})' but was 'colon(:)'
        tryParse("{NormalValue:'INGREDIENT', 'Apostro''Value':'INGREDIENT'}", "'Apostro''Value'");
        // Parse of {NormalValue:'INGREDIENT', ApostroValue:'INGREDIENT'} failed with: EL1043E:(pos 12): Unexpected token.  Expected 'rcurly(})' but was 'colon(:)'
        tryParse("{NormalValue:'INGREDIENT', ApostroValue:'INGREDIENT'}", "ApostroValue");
        // Parse of {'NormalValue':'INGREDIENT', 'ApostroValue':'INGREDIENT'} failed with: EL1043E:(pos 14): Unexpected token.  Expected 'rcurly(})' but was 'colon(:)'
        tryParse("{'NormalValue':'INGREDIENT', 'ApostroValue':'INGREDIENT'}", "ApostroValue");

    }

    private static void tryParse(String mapString, String lookupString) {
        try {
            ExpressionParser parser = new SpelExpressionParser();
            Map<String, String> itemTypes = (Map) parser.parseExpression(mapString).getValue();
            for (Map.Entry<String, String> e : itemTypes.entrySet()) {
                System.out.println(e.getKey() + ": " + e.getValue());
            }
            System.out.println(
                    "Parse of " + mapString + "succeeded, map lookup of " + lookupString + " resulted in: "
                            + parser.parseExpression(mapString + "[" + lookupString + "]").getValue());
        } catch (SpelParseException ex) {
            System.out.println("Parse of " + mapString + " failed with: " + ex.getMessage());
        }
    }
}