小编Met*_*ir3的帖子

我正在尝试将现有的Spring项目迁移到Spring Boot.在项目中已经使用过Spring Data JPA/Hibernate和带有JDBC的简单DAO(使用了PostgreSQL).在少数几个州,我发现在Spring启动时需要迁移的所有内容是:

1. 添加必要的依赖项
2. 添加入口点@SpringBootApplication
3. 利润,就是这样.

1)依赖关系:

<dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring.boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

        </dependencies>
    </dependencyManagement>
<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.9.4</version>
    </dependency>
<dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>2.0.5.RELEASE</version>
        </dependency>
<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
            <version>1.4.7.RELEASE</version>
        </dependency>
<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jetty</artifactId>
            <version>1.4.7.RELEASE</version>
        </dependency>

使用dependencyManagment部分我有错误:

Exception in thread "main" java.lang.NoSuchMethodError: org.springframework.data.repository.config.RepositoryConfigurationSource.getAttribute(Ljava/lang/String;)Ljava/util/Optional;
    at org.springframework.data.jpa.repository.config.JpaRepositoryConfigExtension.postProcess(JpaRepositoryConfigExtension.java:125)
    at org.springframework.data.repository.config.RepositoryConfigurationDelegate.registerRepositoriesIn(RepositoryConfigurationDelegate.java:127)
    at org.springframework.data.repository.config.RepositoryBeanDefinitionRegistrarSupport.registerBeanDefinitions(RepositoryBeanDefinitionRegistrarSupport.java:83)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsFromRegistrars(ConfigurationClassBeanDefinitionReader.java:359)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:143)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:116)
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:320)
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:228)
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:272)
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:92)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:687)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:525)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
    at …

我有一个现有的 spring 4 项目（mvc、jdbc 等），我尝试将其移植到 spring boot，但不能。（许多依赖问题，没有人能解释我如何做到这一点）。但现在我只想在现有项目中使用 Spring Data JPA。这是一个主要的pom依赖：

<properties>
        <jetty.version>9.3.5.v20151012</jetty.version>
        <spring.version>4.3.12.RELEASE</spring.version>
        <spring.boot.version>1.5.8.RELEASE</spring.boot.version>
        <spring.security.version>4.2.3.RELEASE</spring.security.version>
        <quartz.version>2.2.1</quartz.version>
        <slf4j.version>1.7.5</slf4j.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <hibernate-version>5.3.3.Final</hibernate-version>
    </properties>

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web-services</artifactId>
            <version>${spring.boot.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-validation</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.jboss.logging</groupId>
                    <artifactId>jboss-logging</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-core</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-databind</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-annotations</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.hibernate</groupId>
                    <artifactId>hibernate-validator</artifactId>
                </exclusion>

            </exclusions>
        </dependency>
    <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.4</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>2.0.5.RELEASE</version>
        </dependency>
<dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>${hibernate-version}</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>${hibernate-version}</version>
        </dependency> …

我不知道我的qt代码是否做错了什么。我只需要在itemChanged每次项目数据更改时发出该信号。我使用以下代码来制作模型：

QStandardItemModel* model = new QStandardItemModel;
QStandardItem *parentItem = model->invisibleRootItem();
QList<QStandardItem*> itemList1;
QList<QStandardItem*> itemList2;
QList<QStandardItem*> itemList3;
QStandardItem* item1;
QStandardItem* item2;
QStandardItem* item3;

for (int i = 0; i < 3; ++i)
{
    item1 = new QStandardItem;
    item1->setText("item1-" + QString::number(i));

    for (int i = 0; i < 3; ++i)
    {
        item2 = new QStandardItem;
        item2->setText("item2-" + QString::number(i));

        for (int i = 0; i < 3; ++i)
        {
            item3 = new QStandardItem;
            item3->setText("item3-" + QString::number(i));
            itemList3 << item3;
        }
        item2->appendRows(itemList3); …