Question

下面的代码显示了我想要评估的示例JSON。

第2个断言声明有效，但其余的声明没有。任何帮助都会很棒。

代码：

import groovy.json.*

def jsonText = '''
{
    "message": {

            "employees": [{
                "firstName": "John",
                "lastName": "Doe",
                "age": 1
            }, {
                "firstName": "Anna",
                "lastName": "Smith",
                "age": 5
            }, {
                "firstName": "Peter",
                "lastName": "Jones"

            }],

        "body": "Some message"
    }
}        
'''

def json = new JsonSlurper().parseText(jsonText)

def message= json.message
assert message.employees[0].age == 1
assert message.employees.size() == 3

// How to make the following tests work.  Are there any options?
assert message.employees.age.size() == 2      // How many employees have an age key/value pair?

// What's the sum of the ages, if the value does not exist use 0

assert message.employees.sum { it.age==null?0:it.age } == 6  // Could I use some sort of null check?
assert message.employees.age.sum() == 6  // Is there a way to specify the default value

Answer 1

首先，

// How many employees have an age key/value pair?
assert message.employees.findAll { it.age }.size() == 2
// Or
assert message.employees.age.findAll().size() == 2

总和：

// You could use the elvis operator
assert message.employees.sum { it.age ?: 0 } == 6

如何在Groovy中使用JSON中的null或缺少键/值对

1 个答案: