Spring MVC LightAdmin 配置答案

【问题标题】：Spring MVC LightAdmin configurationSpring MVC LightAdmin 配置
【发布时间】：2015-10-16 12:56:00
【问题描述】：

我正在尝试为我的 Web 应用程序设置 LightAdmin 页面，我正在关注 https://github.com/la-team/light-admin。执行此步骤后，看到此错误：

 14:36:55.705 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@77bc4d5: defining beans [dataSource,userJDBCTemplate,teamJDBCTemplate,entityManagerFactory,transactionManager]; root of factory hierarchy
 14:36:55.708 [localhost-startStop-1] ERROR o.s.web.context.ContextLoader - Context initialization failed
 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring/root-context.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: No persistence units parsed from {classpath*:META-INF/persistence.xml}
 ....
 Caused by: java.lang.IllegalStateException: No persistence units parsed from {classpath*:META-INF/persistence.xml}

这是我的 web.xml 文件：

    <?xml version="1.0" encoding="UTF-8"?>

<!-- The definition of the Root Spring Container shared by all Servlets 
    and Filters -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/spring/root-context.xml</param-value>
</context-param>

<context-param>
    <param-name>light:administration:base-url</param-name>
    <param-value>/admin</param-value>
</context-param>

<context-param>
    <param-name>light:administration:security</param-name>
    <param-value>true</param-value>
</context-param>

<context-param>
    <param-name>light:administration:base-package</param-name>
    <param-value>com.project.config</param-value>
</context-param>
<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- Processes application requests -->
<servlet>
    <servlet-name>appServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>appServlet</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

pom.xml：

    <?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.wirecardproject</groupId>
<artifactId>project</artifactId>
<name>Wirecard project</name>
<packaging>war</packaging>
<version>1.0.0-BUILD-SNAPSHOT</version>
<properties>
    <java-version>1.6</java-version>
    <org.springframework-version>4.2.1.RELEASE</org.springframework-version>
    <org.aspectj-version>1.6.10</org.aspectj-version>
    <org.slf4j-version>1.6.6</org.slf4j-version>
</properties>
<dependencies>
    <!-- Spring -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${org.springframework-version}</version>
        <exclusions>
            <!-- Exclude Commons Logging in favor of SLF4j -->
            <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${org.springframework-version}</version>
    </dependency>

    <!-- AspectJ -->
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjrt</artifactId>
        <version>${org.aspectj-version}</version>
    </dependency>

    <!-- LightAdmin -->
    <dependency>
        <groupId>org.lightadmin</groupId>
        <artifactId>lightadmin</artifactId>
        <version>1.2.0.BUILD-SNAPSHOT</version>
    </dependency>

    <!-- @Inject -->
    <dependency>
        <groupId>javax.inject</groupId>
        <artifactId>javax.inject</artifactId>
        <version>1</version>
    </dependency>

    <!-- Servlet -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <version>2.1</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>

    <!-- Test -->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.7</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
        <version>1.2.5.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <version>1.2.5.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.hsqldb</groupId>
        <artifactId>hsqldb</artifactId>
        <version>2.3.3</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.35</version>
    </dependency>
</dependencies>
<build>
    <plugins>
        <plugin>
            <artifactId>maven-eclipse-plugin</artifactId>
            <version>2.9</version>
            <configuration>
                <additionalProjectnatures>
                    <projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
                </additionalProjectnatures>
                <additionalBuildcommands>
                    <buildcommand>org.springframework.ide.eclipse.core.springbuilder</buildcommand>
                </additionalBuildcommands>
                <downloadSources>true</downloadSources>
                <downloadJavadocs>true</downloadJavadocs>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>2.5.1</version>
            <configuration>
                <source>1.6</source>
                <target>1.6</target>
                <compilerArgument>-Xlint:all</compilerArgument>
                <showWarnings>true</showWarnings>
                <showDeprecation>true</showDeprecation>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>exec-maven-plugin</artifactId>
            <version>1.2.1</version>
            <configuration>
                <mainClass>org.test.int1.Main</mainClass>
            </configuration>
        </plugin>
    </plugins>
</build>

和root_context.xml：

<?xml version="1.0" encoding="UTF-8"?>

http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">

<!-- Definition for userJDBCTemplate bean -->
<bean id="userJDBCTemplate" class="users.UserJDBCTemplate">
    <property name="dataSource" ref="dataSource" />
</bean>

<!-- Definition for scriptJDBCTemplate bean -->
<bean id="teamJDBCTemplate" class="teams.TeamJDBCTemplate">
    <property name="dataSource" ref="dataSource" />
</bean>
<bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
    </property>
</bean>

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>

你能帮帮我吗？我正在尝试使用管理页面来创建/更新/删除/显示用户和团队。或者有更好的方法吗？

【问题讨论】：

标签： java spring spring-mvc lightadmin

【解决方案1】：

该消息是指缺少persistence.xml 文件。该文件通常包含您为 Hibernate/JPA 定义的实体的引用。

根据您提交的文件，我无法完全重现您的问题，您有办法在 GitHub 上分享您的项目吗？您能否提供一些关于您如何部署它的额外见解？

【讨论】：

我刚刚开始，所以我使用我的 Spring Tool Suite IDE 和 Pivotal tc Server Developer Edition 在本地部署它。这是我在 GitHub 上的项目，如果你知道一个问题，这对我很有帮助。 github.com/LenkaDzurjakova/project.git

【解决方案2】：

我快速浏览了您的项目。我没有看到你在哪里使用 jpa，看来你正在使用 jdbctemplate 进行数据访问。

你为什么不从你的配置中删除这些行，看看是否能让你走得更远。

<bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
    </property>
</bean>

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>

如果你配置 jpa 相关的 bean，你是在告诉 Spring-Boot 不要自动配置，然后你负责替换框架为你做的“魔法”。

Spring boot 应该提供合理的默认配置。当您开始使用 JPA（实体、存储库等）访问您的数据时，您可以稍后添加特定配置。

在你的 HomeController 中你可以试试这个：

@Autowired
private UserJDBCTemplate userJDBCTemplate;

@Autowired
private TeamJDBCTemplate teamJDBCTemplate;

而不是这个：

ApplicationContext context =  new ClassPathXmlApplicationContext("root-context.xml");

    UserJDBCTemplate ubd =(UserJDBCTemplate)context.getBean("userJDBCTemplate");
    TeamJDBCTemplate tbd =(TeamJDBCTemplate)context.getBean("teamJDBCTemplate");

【讨论】：

我尝试了你的建议，但现在我得到 java.lang.IllegalStateException: No WebApplicationContext found: no ContextLoaderListener or DispatcherServlet registered? org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:252) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter. java:107)