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Request Matching

WARNING: This document is for an old WireMock 2.x baseline. See the documentation for the current WireMock 3.x baseline here

WireMock enables flexible definition of a mock API by supporting rich matching of incoming requests. Stub matching and verification queries can use the following request attributes:

  • URL
  • HTTP Method
  • Query parameters
  • Headers
  • Basic authentication (a special case of header matching)
  • Cookies
  • Request body
  • Multipart/form-data

Here’s an example showing all attributes being matched using WireMock’s in-built match operators. It is also possible to write custom matching logic if you need more precise control:

Java:

stubFor(any(urlPathEqualTo("/everything"))
  .withHeader("Accept", containing("xml"))
  .withCookie("session", matching(".*12345.*"))
  .withQueryParam("search_term", equalTo("WireMock"))
  .withBasicAuth("jeff@example.com", "jeffteenjefftyjeff")
  .withRequestBody(equalToXml("<search-results />"))
  .withRequestBody(matchingXPath("//search-results"))
  .withMultipartRequestBody(
  	aMultipart()
  		.withName("info")
  		.withHeader("Content-Type", containing("charset"))
  		.withBody(equalToJson("{}"))
  )
  .willReturn(aResponse()));

JSON:

{
    "request": {
        "urlPath": "/everything",
        "method": "ANY",
        "headers": {
            "Accept": {
                "contains": "xml"
            }
        },
        "queryParameters": {
            "search_term": {
                "equalTo": "WireMock"
            }
        },
        "cookies": {
            "session": {
                "matches": ".*12345.*"
            }
        },
        "bodyPatterns": [
            {
                "equalToXml": "<search-results />"
            },
            {
                "matchesXPath": "//search-results"
            }
        ],
        "multipartPatterns": [
            {
                "matchingType": "ANY",
                "headers": {
                    "Content-Disposition": {
                        "contains": "name=\"info\""
                    },
                    "Content-Type": {
                        "contains": "charset"
                    }
                },
                "bodyPatterns": [
                    {
                        "equalToJson": "{}"
                    }
                ]
            }
        ],
        "basicAuthCredentials": {
            "username": "jeff@example.com",
            "password": "jeffteenjefftyjeff"
        }
    },
    "response": {
        "status": 200
    }
}

The following sections describe each type of matching strategy in detail.

URL matching #

URLs can be matched either by equality or by regular expression. You also have a choice of whether to match just the path part of the URL or the path and query together.

It is usually preferable to match on path only if you want to match multiple query parameters in an order invariant manner.

Equality matching on path and query #

Java:

urlEqualTo("/your/url?and=query")

JSON:

{
  "request": {
    "url": "/your/url?and=query"
    ...
  },
  ...
}

Regex matching on path and query #

Java:

urlMatching("/your/([a-z]*)\\?and=query")

JSON:

{
  "request": {
    "urlPattern": "/your/([a-z]*)\\?and=query"
    ...
  },
  ...
}

Equality matching on the path only #

Java:

urlPathEqualTo("/your/url")

JSON:

{
  "request": {
    "urlPath": "/your/url"
    ...
  },
  ...
}

Regex matching on the path only #

Java:

urlPathMatching("/your/([a-z]*)")

JSON:

{
  "request": {
    "urlPathPattern": "/your/([a-z]*)"
    ...
  },
  ...
}

Matching other attributes #

All request attributes other than the URL can be matched using the following set of operators.

Equality #

Deems a match if the entire attribute value equals the expected value.

Java:

.withHeader("Content-Type", equalTo("application/json"))

JSON:

{
  "request": {
    ...
    "headers": {
      "Content-Type": {
        "equalTo": "application/json"
      }
    }
    ...
  },
  ...
}

Case-insensitive equality #

Deems a match if the entire attribute value equals the expected value, ignoring case.

Java:

.withHeader("Content-Type", equalToIgnoreCase("application/json"))

JSON:

{
  "request": {
    ...
    "headers": {
      "Content-Type": {
        "equalTo": "application/json",
        "caseInsensitive": true
      }
    }
    ...
  },
  ...
}

Binary Equality #

Deems a match if the entire binary attribute value equals the expected value. Unlike the above equalTo operator, this compares byte arrays (or their equivalent base64 representation).

Java:

// Specifying the expected value as a byte array
.withRequestBody(binaryEqualTo(new byte[] { 1, 2, 3 }))

// Specifying the expected value as a base64 String
.withRequestBody(binaryEqualTo("AQID"))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [{
        "binaryEqualTo" : "AQID" // Base 64
    }]
    ...
  },
  ...
}

Substring (contains) #

Deems a match if the a portion of the attribute value equals the expected value.

Java:

.withCookie("my_profile", containing("johnsmith@example.com"))

JSON:

{
  "request": {
    ...
    "cookies" : {
      "my_profile" : {
        "contains" : "johnsmith@example.com"
      }
    }
    ...
  },
  ...
}

Negative substring (does not contain) #

Deems a match if the attribute value does not contain the expected value.

Java:

.withCookie("my_profile", notContaining("johnsmith@example.com"))

JSON:

{
  "request": {
    ...
    "cookies" : {
      "my_profile" : {
        "doesNotContain" : "johnsmith@example.com"
      }
    }
    ...
  },
  ...
}

Regular expression #

Deems a match if the entire attribute value matched the expected regular expression.

Java:

.withQueryParam("search_term", matching("^(.*)wiremock([A-Za-z]+)$"))

JSON:

{
  "request": {
    ...
    "queryParameters" : {
      "search_term" : {
        "matches" : "^(.*)wiremock([A-Za-z]+)$"
      }
    }
    ...
  },
  ...
}

It is also possible to perform a negative match i.e. the match succeeds when the attribute value does not match the regex:

Java:

.withQueryParam("search_term", notMatching("^(.*)wiremock([A-Za-z]+)$"))

JSON:

{
  "request": {
    ...
    "queryParameters" : {
      "search_term" : {
        "doesNotMatch" : "^(.*)wiremock([A-Za-z]+)$"
      }
    }
    ...
  },
  ...
}

JSON equality #

Deems a match if the attribute (most likely the request body in practice) is valid JSON and is a semantic match for the expected value.

Java:

.withRequestBody(equalToJson("{ \"total_results\": 4 }"))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "equalToJson" : { "total_results": 4 }
    } ]
    ...
  },
  ...
}

JSON with string literal:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "equalToJson" : "{ \"total_results\": 4 }"
    } ]
    ...
  },
  ...
}

Less strict matching #

By default different array orderings and additional object attributes will trigger a non-match. However, both of these conditions can be disabled individually.

Java:

.withRequestBody(equalToJson("{ \"total_results\": 4  }", true, true))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "equalToJson" : "{ \"total_results\": 4  }",
      "ignoreArrayOrder" : true,
      "ignoreExtraElements" : true
    } ]
    ...
  },
  ...
}

Placeholders #

JSON equality matching is based on JsonUnit and therefore supports placeholders. This allows specific attributes to be treated as wildcards, rather than an exactly value being required for a match.

For instance, the following:

{ "id": "${json-unit.any-string}" }

would match a request with a JSON body of:

{ "id": "abc123" }

It’s also possible to use placeholders that constrain the expected value by type or regular expression. See the JsonUnit placeholders documentation for the full syntax.

note

Placeholders are only available in the jre8 WireMock JARs, as the JsonUnit library requires at least Java 8.

JSON Path #

Deems a match if the attribute value is valid JSON and matches the JSON Path expression supplied. A JSON body will be considered to match a path expression if the expression returns either a non-null single value (string, integer etc.), or a non-empty object or array.

Presence matching #

Deems a match if the attribute value is present in the JSON.

Java:

.withRequestBody(matchingJsonPath("$.name"))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "matchesJsonPath" : "$.name"
    } ]
    ...
  },
  ...
}

Request body example:

// matching
{ "name": "Wiremock" }
// not matching
{ "price": 15 }

Equality matching #

Deems a match if the attribute value equals the expected value.

Java:

.withRequestBody(matchingJsonPath("$.things[?(@.name == 'RequiredThing')]"))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "matchesJsonPath" : "$.things[?(@.name == 'RequiredThing')]"
    } ]
    ...
  },
  ...
}

Request body example:

// matching
{ "things": { "name": "RequiredThing" } }
{ "things": [ { "name": "RequiredThing" }, { "name": "Wiremock" } ] }
// not matching
{ "price": 15 }
{ "things": { "name": "Wiremock" } }

Regex matching #

Deems a match if the attribute value matches the regex expected value.

Java:

.withRequestBody(matchingJsonPath("$.things[?(@.name =~ /Required.*/i)]"))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "matchesJsonPath" : "$.things[?(@.name =~ /Required.*/i)]"
    } ]
    ...
  },
  ...
}

Request body example:

// matching
{ "things": { "name": "RequiredThing" } }
{ "things": [ { "name": "Required" }, { "name": "Wiremock" } ] }
// not matching
{ "price": 15 }
{ "things": { "name": "Wiremock" } }
{ "things": [ { "name": "Thing" }, { "name": "Wiremock" } ] }

Size matching #

Deems a match if the attribute size matches the expected size.

Java:

.withRequestBody(matchingJsonPath("$[?(@.things.size() == 2)]"))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "matchesJsonPath" : "$[?(@.things.size() == 2)]"
    } ]
    ...
  },
  ...
}

Request body example:

// matching
{ "things": [ { "name": "RequiredThing" }, { "name": "Wiremock" } ] }
// not matching
{ "things": [ { "name": "RequiredThing" } ] }

Nested value matching #

The JSONPath matcher can be combined with another matcher, such that the value returned from the JSONPath query is evaluated against it:

Java:

.withRequestBody(matchingJsonPath("$..todoItem", containing("wash")))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "matchesJsonPath" : {
         "expression": "$..todoItem",
         "contains": "wash"
      }
    } ]
    ...
  },
  ...
}

Since WireMock’s matching operators all work on strings, the value selected by the JSONPath expression will be coerced to a string before the match is evaluated. This true even if the returned value is an object or array. A benefit of this is that this allows a sub-document to be selected using JSONPath, then matched using the equalToJson operator. E.g. for the following request body:

{
    "outer": {
        "inner": 42
    }
}

The following will match:

.withRequestBody(matchingJsonPath("$.outer", equalToJson("{                \n" +
                                                         "   \"inner\": 42 \n" +
                                                         "}")))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "matchesJsonPath" : {
         "expression": "$.outer",
         "equalToJson": "{ \"inner\": 42 }"
      }
    } ]
    ...
  },
  ...
}

XML equality #

Deems a match if the attribute value is valid XML and is semantically equal to the expected XML document. The underlying engine for determining XML equality is XMLUnit.

Java:

.withRequestBody(equalToXml("<thing>Hello</thing>"))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "equalToXml" : "<thing>Hello</thing>"
    } ]
    ...
  },
  ...
}

Use of placeholders #

The XMLUnit placeholders feature is supported in WireMock. For example, when comparing the XML documents, you can ignore some text nodes.

Java:

.withRequestBody(
    equalToXml("<message><id>${xmlunit.ignore}</id><content>Hello</content></message>", true)
)

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "equalToXml" : "<message><id>${xmlunit.ignore}</id><content>Hello</content></message>",
      "enablePlaceholders" : true
    } ]
    ...
  },
  ...
}

When the actual request body is <message><id>123456</id><content>Hello</content></message>, it will be deemed a match.

If the default placeholder delimiters ${ and } can not be used, you can specify custom delimiters (using regular expressions). For example

Java:

.withRequestBody(
    equalToXml("<message><id>[[xmlunit.ignore]]</id><content>Hello</content></message>",
               true,
               "\\[\\[",
               "]]"
    )
)

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "equalToXml" : "<message><id>[[xmlunit.ignore]]</id><content>Hello</content></message>",
      "enablePlaceholders" : true,
      "placeholderOpeningDelimiterRegex" : "\\[\\[",
      "placeholderClosingDelimiterRegex" : "]]"
    } ]
    ...
  },
  ...
}

Excluding specific types of comparison #

You can further tune how XML documents are compared for equality by disabling specific XMLUnit comparison types.

Java:

import static org.xmlunit.diff.ComparisonType.*;

...

.withRequestBody(equalToXml("<thing>Hello</thing>")
    .exemptingComparisons(NAMESPACE_URI, ELEMENT_TAG_NAME)
)

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "equalToXml" : "<thing>Hello</thing>",
      "exemptedComparisons": ["NAMESPACE_URI", "ELEMENT_TAG_NAME"]
    } ]
    ...
  },
  ...
}

The full list of comparison types used by default is as follows:

ELEMENT_TAG_NAME SCHEMA_LOCATION NO_NAMESPACE_SCHEMA_LOCATION NODE_TYPE NAMESPACE_URI TEXT_VALUE PROCESSING_INSTRUCTION_TARGET PROCESSING_INSTRUCTION_DATA ELEMENT_NUM_ATTRIBUTES ATTR_VALUE CHILD_NODELIST_LENGTH CHILD_LOOKUP ATTR_NAME_LOOKUP

XPath #

Deems a match if the attribute value is valid XML and matches the XPath expression supplied. An XML document will be considered to match if any elements are returned by the XPath evaluation. WireMock delegates to Java’s in-built XPath engine (via XMLUnit), therefore up to (at least) Java 8 it supports XPath version 1.0.

Java:

.withRequestBody(matchingXPath("/todo-list[count(todo-item) = 3]"))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "matchesXPath" : "/todo-list[count(todo-item) = 3]"
    } ]
    ...
  },
  ...
}

The above example will select elements based on their local name if used with a namespaced XML document.

If you need to be able to select elements based on their namespace in addition to their name you can declare the prefix to namespace URI mappings and use them in your XPath expression:

Java:

.withRequestBody(matchingXPath("/stuff:outer/more:inner[.=111]")
  .withXPathNamespace("stuff", "http://stuff.example.com")
  .withXPathNamespace("more", "http://more.example.com"))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "matchesXPath" : "/stuff:outer/more:inner[.=111]",
      "xPathNamespaces" : {
        "stuff" : "http://stuff.example.com",
        "more"  : "http://more.example.com"
      }
    } ]
    ...
  },
  ...
}

Nested value matching #

The XPath matcher described above can be combined with another matcher, such that the value returned from the XPath query is evaluated against it:

Java:

.withRequestBody(matchingXPath("//todo-item/text()", containing("wash")))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "matchesXPath" : {
         "expression": "//todo-item/text()",
         "contains": "wash"
      }
    } ]
    ...
  },
  ...
}

If multiple nodes are returned from the XPath query, all will be evaluated and the returned match will be the one with the shortest distance.

If the XPath expression returns an XML element rather than a value, this will be rendered as an XML string before it is passed to the value matcher. This can be usefully combined with the equalToXml matcher e.g.

Java:

.withRequestBody(matchingXPath("//todo-item", equalToXml("<todo-item>Do the washing</todo-item>")))

JSON:

{
  "request": {
    ...
    "bodyPatterns" : [ {
      "matchesXPath" : {
         "expression": "//todo-item",
         "equalToXml": "<todo-item>Do the washing</todo-item>"
      }
    } ]
    ...
  },
  ...
}

Absence #

Deems a match if the attribute specified is absent from the request.

Java:

.withCookie("session", absent())
.withQueryParam("search_term", absent())
.withHeader("X-Absent", absent())

JSON:

{
  "request": {
    ...
    "headers" : {
      "X-Absent" : {
        "absent" : true
      }
    },
    "queryParameters" : {
      "search_term" : {
        "absent" : true
      }
    },
    "cookies" : {
      "session" : {
        "absent" : true
      }
    }
    ...
  },
  ...
}

Multipart/form-data #

Deems a match if a multipart value is valid and matches any or all the multipart pattern matchers supplied. As a Multipart is a ‘mini’ HTTP request in itself all existing Header and Body content matchers can by applied to a Multipart pattern. A Multipart pattern can be defined as matching ANY request multiparts or ALL. The default matching type is ANY.

Java:

stubFor(...)
  ...
  .withMultipartRequestBody(
  	aMultipart()
  		.withName("info")
  		.withHeader("Content-Type", containing("charset"))
  		.withMultipartBody(equalToJson("{}"))
  )

JSON:

{
  "request": {
    ...
    "multipartPatterns" : [ {
      "matchingType" : "ANY",
      "headers" : {
        "Content-Disposition" : {
          "contains" : "name=\"info\""
        },
        "Content-Type" : {
          "contains" : "charset"
        }
      },
      "bodyPatterns" : [ {
        "equalToJson" : "{}"
      } ]
    } ],
    ...
  },
  ...
}

Basic Authentication #

Although matching on HTTP basic authentication could be supported via a correctly encoded Authorization header, you can also do this more simply via the API.

Java:

stubFor(get(urlEqualTo("/basic-auth")).withBasicAuth("user", "pass")

JSON:

{
    "request": {
        "method": "GET",
        "url": "/basic-auth",
        "basicAuth": {
            "username": "user",
            "password": "pass"
        }
    },
    "response": {
        "status": 200
    }
}

Dates and times #

Dates and times can be matched in several ways. Three comparison operators are available: before, after and equalToDateTime, all of which have the same set of parameters.

Additionally, the expected value can be either literal (fixed) or an offset from the current date. Both the expected and actual dates can be truncated in various ways.

Literal date/times #

You can match an incoming date/time against a fixed value e.g. “match if the X-Munged-Date request header is after x”:

Java:

stubFor(post("/dates")
  .withHeader("X-Munged-Date", after("2021-05-01T00:00:00Z"))
  .willReturn(ok()));

// You can also use a ZonedDateTime or LocalDateTime object
stubFor(post("/dates")
  .withHeader("X-Munged-Date", after(ZonedDateTime.parse("2021-05-01T00:00:00Z")))
  .willReturn(ok()));

JSON:

{
    "request": {
        "url": "/dates",
        "method": "POST",
        "headers": {
            "X-Munged-Date": {
                "after": "2021-05-01T00:00:00Z"
            }
        }
    },
    "response": {
        "status": 200
    }
}

Offset #

You can also match in incoming value against the current date/time or an offset from it:

Java:

stubFor(post("/dates")
  .withHeader("X-Munged-Date", beforeNow().expectedOffset(3, DateTimeUnit.DAYS))
  .withHeader("X-Finalised-Date", before("now +2 months")) // This form and beforeNow() are equivalent
  .willReturn(ok()));

JSON:

{
    "request": {
        "url": "/dates",
        "method": "POST",
        "headers": {
            "X-Munged-Date": {
                "before": "now +3 days"
            },
            "X-Finalised-Date": {
                // This is equivalent to "now +2 months"
                "before": "now",
                "expectedOffset": 2,
                "expectedOffsetUnit": "months"
            }
        }
    }
}

Local vs. Zoned #

Both the expected and actual date/time values can either have timezone information or not. For instance a date in ISO8601 format could be zoned: 2021-06-24T13:40:27+01:00 or 2021-06-24T12:40:27Z, or local: 2021-06-24T12:40:27.

Likewise a date/time in RFC 1123 (HTTP standard) format is also zoned: Tue, 01 Jun 2021 15:16:17 GMT.

Whether the expected and actual values are zoned or not affects whether they can be matched and how. Generally, the best approach is to try to ensure you’re using the same on both sides - if you’re expected a zoned actual date, then use one as the expected date also, plus the equivalent for local dates.

If the expected date is zoned and the actual is local, the actual date will assume the system timezone before the comparison is attempted.

If the expected date is local and the actual is zoned, the timezone will be stripped from the actual value before the comparison is attempted.

Date formats #

By default these matchers will attempt to parse date/times in ISO8601 format, plus the three standard formats defined by HTTP RFCs 1123, 1036 and asctime (taken from C but also valid for specifying HTTP dates).

It is also possible to specify your own format using Java’s date format strings.

Java:

stubFor(post("/dates")
  .withHeader("X-Munged-Date",
    equalToDateTime("2021-06-24T00:00:00").actualFormat("dd/MM/yyyy"))
  .willReturn(ok()));

JSON:

{
    "request": {
        "url": "/dates",
        "method": "POST",
        "headers": {
            "X-Munged-Date": {
                "equalToDateTime": "2021-06-24T00:00:00",
                "actualFormat": "dd/MM/yyyy"
            }
        }
    }
}

Truncation #

Both the expected and actual date/times can be truncated in various ways e.g. to the first hour of the day. When using offset from now as the expected date with truncation, the truncation will be applied first followed by the offsetting.

Truncation is useful if you want to create expressions like “before the end of this month” or “equal to the current hour”.

It can usefully be combined with offsetting so e.g. if the match required is “after the 15th of this month” we could do as follows.

Java:

stubFor(post("/dates")
  .withRequestBody(matchingJsonPath(
      "$.completedDate",
      after("now +15 days").truncateExpected(FIRST_DAY_OF_MONTH))
  )
  .willReturn(ok()));

JSON:

{
    "request": {
        "url": "/dates",
        "method": "POST",
        "bodyPatterns": [
            {
                "matchesJsonPath": {
                    "expression": "$.completedDate",
                    "after": "now +15 days",
                    "truncateExpected": "first day of month"
                }
            }
        ]
    }
}

Truncating the actual value can be useful when checking for equality with literal date/times e.g. to say “is in March 2020”:

stubFor(post("/dates")
  .withRequestBody(matchingJsonPath(
    "$.completedDate",
    equalToDateTime("2020-03-01T00:00:00Z").truncateActual(FIRST_DAY_OF_MONTH))
  )
  .willReturn(ok()));

JSON:

{
    "request": {
        "url": "/dates",
        "method": "POST",
        "bodyPatterns": [
            {
                "matchesJsonPath": {
                    "expression": "$.completedDate",
                    "equalToDateTime": "2020-03-01T00:00:00Z",
                    "truncateActual": "first day of month"
                }
            }
        ]
    }
}

The full list of available truncations is:

  • first minute of hour
  • first hour of day
  • first day of month
  • first day of next month
  • last day of month
  • first day of year
  • first day of next year
  • last day of year

Logical AND and OR #

You can combine two or more matchers in an AND expression.

Java:

// Both statements are equivalent

stubFor(get(urlPathEqualTo("/and"))
    .withHeader("X-Some-Value", and(
        matching("[a-z]+"),
        containing("magicvalue"))
    )
    .willReturn(ok()));

stubFor(get(urlPathEqualTo("/and"))
    .withHeader("X-Some-Value", matching("[a-z]+").and(containing("magicvalue")))
    .willReturn(ok()));

JSON:

{
    "request": {
        "urlPath": "/and",
        "method": "GET",
        "headers": {
            "X-Some-Value": {
                "and": [
                    {
                        "matches": "[a-z]+"
                    },
                    {
                        "contains": "magicvalue"
                    }
                ]
            }
        }
    }
}

Similarly you can also construct an OR expression.

Java:

// Both statements are equivalent

stubFor(get(urlPathEqualTo("/or"))
  .withQueryParam("search", or(
        matching("[a-z]+"),
        absent())
  )
  .willReturn(ok()));

stubFor(get(urlPathEqualTo("/or"))
    .withQueryParam("search", matching("[a-z]+").or(absent()))
    .willReturn(ok()));

JSON:

{
    "request": {
        "urlPath": "/or",
        "method": "GET",
        "queryParameters": {
            "search": {
                "or": [
                    {
                        "matches": "[a-z]+"
                    },
                    {
                        "absent": true
                    }
                ]
            }
        }
    }
}

Combining date matchers as JSONPath/XPath sub-matchers #

As an example of how various matchers can be combined, suppose we want to match if a field named date in a JSON request body is a date/time between two points.

We can do this by extracting the field using matchesJsonPath then matching the result of this against the before and after matchers AND’d together.

Java:

stubFor(post("/date-range")
    .withRequestBody(matchingJsonPath("$.date",
        before("2022-01-01T00:00:00").and(
        after("2020-01-01T00:00:00"))))
    .willReturn(ok()));

JSON:

{
    "request": {
        "url": "/date-range",
        "method": "POST",
        "bodyPatterns": [
            {
                "matchesJsonPath": {
                    "expression": "$.date",
                    "and": [
                        {
                            "before": "2022-01-01T00:00:00"
                        },
                        {
                            "after": "2020-01-01T00:00:00"
                        }
                    ]
                }
            }
        ]
    }
}

This would match the following JSON request body:

{
    "date": "2021-01-01T00:00:00"
}

Matching Header/Query parameter containing multiple values #

You can match multiple values of a query parameter or header using the Includes matcher, which matches multiple values or patterns specified and may contain other values as well.

// The values of id must include 1, 2, and 3.
stubFor(get(urlPathEqualTo("/things"))
      .withQueryParam("id", including("1", "2", "3")) 
      .willReturn(ok()));

{
  "mapping": {
    "request" : {
      "urlPath" : "/things",
      "method" : "GET",
      "queryParameters" : {
        "id" : {
          "includes" : [
            {
              "equalTo": "1"
            },
            {
              "equalTo": "2"
            },
            {
              "equalTo": "3"
            }
          ]
        }
      }
    },
    "response" : {
      "status" : 200
    }
  }
}

//values of id must conform to the match expressions
stubFor(get(urlPathEqualTo("/things"))
    .withQueryParam("id", including(
    equalTo("1"),
    containing("2"),
    notContaining("3")
    )).willReturn(ok()));

{
  "mapping": {
    "request" : {
      "urlPath" : "/things",
      "method" : "GET",
      "queryParameters" : {
        "id" : {
          "includes" : [
            {
              "equalTo": "1"
            },
            {
              "contains": "2"
            },
            {
              "doesNotContain": "3"
            }
          ]
        }
      }
    },
    "response" : {
      "status" : 200
    }
  }
}