带Spring Boot的NoSuchMethodException QueryDSL&Spring Data Mongo

Question

我试图在我的Spring Boot2.0.4.Release应用程序上实现查询DSL，该应用程序使用Spring Data Mongo2.0.4.Release&Gradle4.10。我正在使用Spring工具套件在本地运行它。

我从包括Spring数据文档在内的多个来源中找到了以下步骤：

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    apply plugin: "com.ewerk.gradle.plugins.querydsl"

    sourceSets {
        main {
            java {
                srcDir "$buildDir/generated/source/apt/main"
            }
        }
    }

    querydsl {
        springDataMongo = true
        querydslSourcesDir = "$buildDir/generated/source/apt/main"
    }

    dependencies {
        compile "com.querydsl:querydsl-mongodb:4.1.4"
        compileOnly "com.querydsl:querydsl-apt:4.1.4"
    }

    sourceSets.main.java.srcDirs = ['src/main/java']

null

    buildscript {

        ext { springBootVersion = "2.0.4.RELEASE" }

        repositories { mavenCentral() }

        dependencies {
            classpath "org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}"
            classpath "gradle.plugin.com.ewerk.gradle.plugins:querydsl-plugin:1.0.9"
        }
    }

    plugins {
        id "java"
        id "eclipse"
        id "org.springframework.boot" version "2.0.4.RELEASE"
        id "io.spring.dependency-management" version "1.0.6.RELEASE"
    }

    sourceCompatibility = 1.8

    repositories { mavenCentral() }

    dependencies {
        ...
        compile("org.springframework.boot:spring-boot-starter-web:${springBootVersion}")
        compile("org.springframework.boot:spring-boot-starter-data-mongodb:${springBootVersion}")
        ...
    }

    apply from: 'gradle/querydsl.gradle'

    /* Added this because Eclipse was not able to find generated classes */
    sourceSets.main.java.srcDirs = ['build/generated/source/apt/main','src/main/java']

    compileJava.dependsOn processResources
    processResources.dependsOn cleanResources

• 之后，更新了repository注释接口，如下所示。注意：我还将片段存储库FragmentOrderRepository用于一些自定义查询。

    public interface OrderRepository<D extends OrderDAO>
            extends EntityRepository<D>, PagingAndSortingRepository<D, String>, FragmentOrderRepository<D>, QuerydslPredicateExecutor<D> {}

• 然后在controller中创建了get映射，如下所示

    @RestController
    public class OrderController {
        @GetMapping(value="/orders/dsl", produces = { "application/json" })
        public ResponseEntity<List> getOrdersDSL(@QuerydslPredicate(root = OrderDAO.class) Predicate predicate, Pageable pageable, @RequestParam final MultiValueMap<String, String> parameters) {
            return (ResponseEntity<List>) orderService.getTools().getRepository().findAll(predicate, pageable);
        }
    }

• 然后在我的runner类中添加了EnableSpringDataWebSupport注释

    @SpringBootApplication
    @EnableSpringDataWebSupport
    public class SampleApp {
        public static void main(String[] args) {
            SpringApplication.run(SampleApp.class, args);
        }
    }

似乎没有将参数解析为类型。

---更新09/19/19----

在调试时，我发现一个类HandlerMethodArgumentResolverComposite，它从ArgumentResolver列表中为给定的MethodParameter查找ArgumentResolver（类型为HandlerMethodArgumentResolver。此列表不包含QueryDSLPredicatearGumentResolver。因此，它不能解决这些参数。

Answer 1

发现我所做的错误，是在我的配置注释类上缺少enableWebMVC注释。详细信息在本文档中。