java - 无法在使用 RestResponsePage 的测试中构造“org.springframework.data.domain.Pageable”的实例

Question

我已经从 Spring Boot 1.5.11.RELEASE 迁移到 Spring Boot 2.3.6.RELEASE。我的测试没有通过。我有的：

我的测试

@Autowired
protected TestRestTemplate restTemplate;

@Test
public void getParamWithValueAndPaging() {
    String uri = "?page=1&size=2";
    ResponseEntity<RestResponsePage<OperationDto>> operationsResponse =  
    restTemplate.exchange(URI + uri,
            HttpMethod.GET, TestUtils.HTTP_OPERATOR,
            new ParameterizedTypeReference<RestResponsePage<OperationDto>>() {
            });

    assertEquals(2, operationsResponse.getBody().getNumberOfElements());
    assertEquals(1, operationsResponse.getBody().getNumber());
}

休息响应页面

package *;

import lombok.Getter;
import lombok.Setter;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;

import java.util.ArrayList;
import java.util.List;

@Getter
@Setter
public class RestResponsePage<T> extends PageImpl<T> {

    private int number;
    private int size;
    private int totalPages;
    private int numberOfElements;
    private long totalElements;
    private boolean previousPage;
    private boolean first;
    private boolean nextPage;
    private boolean last;
    private List<T> content;
    private Sort sort;

    public RestResponsePage(List<T> content, Pageable pageable, long total) {
        super(content, pageable, total);
    }

    public RestResponsePage(List<T> content) {
        super(content);
    }

    public RestResponsePage() {
        super(new ArrayList<T>());
    }

    public PageImpl<T> pageImpl() {
        return new PageImpl<T>(getContent(), PageRequest.of(getNumber(),
                getSize(), getSort()), getTotalElements());
    }
}

API接口

@Api("**")
@RequestMapping("/*/*/operation")
public interface OperationResource<Domain> {

    @ApiOperation("*")
    @GetMapping
    @ApiResponses({
            @ApiResponse(code = 200, message = "")
    })
    GenericPageSpringSupport<OperationDto> getUserOperation(@Spec(path = "", spec = Equal.class) Specification<Domain> specification, Pageable pageable);

APIImpl

@Override
public GenericPageSpringSupport<OperationDto> getUserOperation(
        @Conjunction(value = {
                @Or({@Spec(path = "id", spec = LikeIgnoreCase.class, params = "id"),
                        @Spec(path = "name", spec = LikeIgnoreCase.class, params = "name")})
        }, and = @Spec(path = "operationType", spec = Equal.class, params = "type")) Specification<UserOperation> specification, Pageable pageable) {
    return service.getUserOperation(specification, pageable);
}

GenericPageSpringSupport（它是适配器，它以两种格式返回数据：Page 和 GenericPage）

public class GenericPageSpringSupport<T> extends GenericPage<T> {
    @JsonUnwrapped
    private final Page<T> page;

    public GenericPageSpringSupport(Page<T> page) {
        super(page.getContent(), page.getTotalElements());
        this.page = page;
    }

    public List<T> getContent() {
        return page.getContent();
    }

    public long getTotalElements() {
        return page.getTotalElements();
    }
}

最后，我在测试中的错误：

org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class org.springframework.data.domain.Pageable]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `org.springframework.data.domain.Pageable` (no Creators, like default constructor, exist): abstract types either need to be mapped to concrete types, have custom deserializer, or contain additional type information
 at [Source: (PushbackInputStream); line: 1, column: 467] (through reference chain: my.package.RestResponsePage["pageable"])

    at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:282)
    at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:243)
    at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:105)
    at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:996)
    at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:979)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:739)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:672)
    at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:610)
    at org.springframework.boot.test.web.client.TestRestTemplate.exchange(TestRestTemplate.java:781)
    at my.package.tests.testClass.getOperationWithPaging(TestClass.java:866)
    at my.package.tests.testClass.getParamWithValueAndPaging(TestClass.java:165)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:132)
    at org.testng.internal.MethodInvocationHelper$1.runTestMethod(MethodInvocationHelper.java:238)
    at org.springframework.test.context.testng.AbstractTestNGSpringContextTests.run(AbstractTestNGSpringContextTests.java:181)
    at org.testng.internal.MethodInvocationHelper.invokeHookable(MethodInvocationHelper.java:252)
    at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:595)
    at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:174)
    at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
    at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:822)
    at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:147)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
    at org.testng.TestRunner.privateRun(TestRunner.java:764)
    at org.testng.TestRunner.run(TestRunner.java:585)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)
    at org.testng.SuiteRunner.run(SuiteRunner.java:286)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1218)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1140)
    at org.testng.TestNG.runSuites(TestNG.java:1069)
    at org.testng.TestNG.run(TestNG.java:1037)
    at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)
    at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)
Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `org.springframework.data.domain.Pageable` (no Creators, like default constructor, exist): abstract types either need to be mapped to concrete types, have custom deserializer, or contain additional type information
 at [Source: (PushbackInputStream); line: 1, column: 467] (through reference chain: my.package.RestResponsePage["pageable"])
    at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:67)
    at com.fasterxml.jackson.databind.DeserializationContext.reportBadDefinition(DeserializationContext.java:1615)
    at com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:400)
    at com.fasterxml.jackson.databind.DeserializationContext.handleMissingInstantiator(DeserializationContext.java:1077)
    at com.fasterxml.jackson.databind.deser.AbstractDeserializer.deserialize(AbstractDeserializer.java:265)
    at com.fasterxml.jackson.databind.deser.impl.FieldProperty.deserializeAndSet(FieldProperty.java:138)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:371)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:164)
    at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4526)
    at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3521)
    at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:274)
    ... 40 more

在阅读了有关此问题的一些主题后，我尝试像这样更改 RestResponsePage 类：

import com.fasterxml.jackson.annotation.JsonCreator;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.JsonNode;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;

import java.util.ArrayList;
import java.util.List;

@JsonIgnoreProperties(ignoreUnknown = true)
public class RestResponsePage<T> extends PageImpl<T> {

    @JsonCreator(mode = JsonCreator.Mode.PROPERTIES)
    public RestResponsePage(
            @JsonProperty("content") List<T> content,
            @JsonProperty("number") int number,
            @JsonProperty("size") int size,
            @JsonProperty("totalElements") Long totalElements,
            @JsonProperty("pageable") JsonNode pageable,
            @JsonProperty("last") boolean last,
            @JsonProperty("totalPages") int totalPages,
            @JsonProperty("sort") JsonNode sort,
            @JsonProperty("first") boolean first,
            @JsonProperty("numberOfElements") int numberOfElements) {
        super(content, PageRequest.of(number, size), totalElements);
    }

    public RestResponsePage(
            List<T> content,
            Pageable pageable,
            long total) {
        super(content, pageable, total);
    }

    public RestResponsePage(List<T> content) {
        super(content);
    }

    public RestResponsePage() {
        super(new ArrayList<T>());
    }

}

之后我的问题是：

org.springframework.web.client.UnknownContentTypeException: Could not extract response: no suitable HttpMessageConverter found for response type [my.package.RestResponsePage<my.package.OperationDto>] and content type [application/json]

    at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:126)
    at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:996)
    at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:979)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:739)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:672)
    at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:610)
    at org.springframework.boot.test.web.client.TestRestTemplate.exchange(TestRestTemplate.java:781)
    at my.package.tests.TestClass.getOperationWithPaging(TestClass.java:866)
    at my.package.tests.TestClass.getParamWithValueAndPaging(TestClass.java:165)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:132)
    at org.testng.internal.MethodInvocationHelper$1.runTestMethod(MethodInvocationHelper.java:238)
    at org.springframework.test.context.testng.AbstractTestNGSpringContextTests.run(AbstractTestNGSpringContextTests.java:181)
    at org.testng.internal.MethodInvocationHelper.invokeHookable(MethodInvocationHelper.java:252)
    at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:595)
    at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:174)
    at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
    at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:822)
    at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:147)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
    at org.testng.TestRunner.privateRun(TestRunner.java:764)
    at org.testng.TestRunner.run(TestRunner.java:585)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)
    at org.testng.SuiteRunner.run(SuiteRunner.java:286)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1218)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1140)
    at org.testng.TestNG.runSuites(TestNG.java:1069)
    at org.testng.TestNG.run(TestNG.java:1037)
    at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)
    at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)

我该如何解决？

标签： javaspring-bootjacksonresttemplatejackson-databind