How to calculate the sum of variables from JSON data?

Question

I wrote a project where the string is returned the other way around.

@PostMapping(\"/reverse\")
public String reverseList(@RequestBody String string) {
    List&         


        

Answer 1

Try to do this. It will make your work easier.

Send a1=10+a2=10+a3=10 instead of a1+a2+a3 in the curl command.

Command :

curl -H "Content-Type: application/json" -d "a1=10+a2=10+a3=10" localhost:8080/hello/reverse

Update the code to this :

@PostMapping("/reverse")
public String reverseList(@RequestBody String str) {
    int sum = 0;
    String[] variables = str.split("\\+");
    for (String variable : variables) {
        sum += Integer.parseInt(variable.split("=")[1]);
    }
    return String.valueOf(sum); 
}