Split the dynamic String in java

Question

I have a string as follows and I'm splitting the parameters (TransactionType, ServiceID, PaymentID, OrderNumber, Amount) as below.

String response = "TransactionType=SALE&ServiceID=TV3&PaymentID=PYID2016061501417701&OrderNumber=2016061501417701&Amount=235.00"

String splitParams[] = res.split("&");
        String TransactionType = splitParams[0].substring(splitParams[0]
                .indexOf("=") + 1);
        String ServiceID = splitParams[1].substring(splitParams[1]
                .indexOf("=") + 1);
        String PaymentID = splitParams[2].substring(splitParams[2]
                .indexOf("=") + 1);
        String OrderNumber = splitParams[3].substring(splitParams[3]
                .indexOf("=") + 1);
        String amount = splitParams[4].substring(splitParams[4]
                .indexOf("=") + 1);

But the problem is these parameters are not sent in order and sometimes some parameters are not sent. Is there any way to split the parameters in string using java based on parameter name?

As I understand, you have an URL fragment. I think you could find plenty of answers here: stackoverflow.com/questions/13592236/… , most of them deal with url, but it should fit also to only parameter part. — Adomas
– Adomas, Commented Jun 15, 2016 at 11:11

Frank · Accepted Answer · 2016-06-15 11:12:12Z

4

You could use guavas Splitter like this:

Map<String, String> responseMap = Splitter.on("&")
        .omitEmptyStrings()
        .trimResults()
        .withKeyValueSeparator("=")
        .split(response);

And then you could get the values like that:

String TransactionType = responseMp.get("TransactionType ");

answered Jun 15, 2016 at 11:12

Frank

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5 Comments

dmaprasad Over a year ago

I'm getting error "The method withKeyValueSeparator(String) is undefined for the type Splitter". I have added "com.google.guava_1.6.0.jar". Can u please help with that?

Seek Addo Over a year ago

@dmaprasad this function is only from Google Guava, if you want to use it you need to import it like import com.google.common.base.Splitter;

dmaprasad Over a year ago

I have imported like com.google.common.base.Splitter;. But same result. not working. do u have any idea. Really appreciate help

Frank Over a year ago

I use guava-18.0.jar. The maven-dependency is

<dependency>          <groupId>com.google.guava</groupId>          <artifactId>guava</artifactId><version>18.0</version>       </dependency>

dmaprasad Over a year ago

Thank you very much. By replacing guava-18.0.jar with com.google.guava_1.6.0.jar is worked. Really appreciate your help.

Seek Addo · Accepted Answer · 2016-06-15 12:56:20Z

2

Try this:

String response = "TransactionType=SALE&ServiceID=TV3&PaymentID=PYID2016061501417701&OrderNumber=2016061501417701&Amount=235.00";

Map<String,String> responseMap = Arrays.asList(response.split("&")).stream().
     map(v-> v.split("=")).collect(Collectors.toMap(a-> a[0],a ->a[1]));



System.out.println(responseMap);

output:

{TransactionType=SALE, Amount=235.00, PaymentID=PYID2016061501417701, OrderNumber=2016061501417701, ServiceID=TV3}

edited Jun 15, 2016 at 12:56

answered Jun 15, 2016 at 12:36

Seek Addo

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1 Comment

dmaprasad Over a year ago

Thanks for the comment. Above answer really matched with my requirement.

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