我希望开发Spring MVC + spring data jpa + Hibernate Validator集成示例。在这个项目中，我面临着下面的问题。我认为messages_en.properties文件未正确加载，导致失败。
我知道在堆栈溢出时已经提出类似的问题类型，但没有一个解决方案适用于我。
javax.el.PropertyNotFoundException: Cannot find property length
at org.hibernate.validator.internal.engine.messageinterpolation.el.RootResolver.getValue(RootResolver.java:64)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:67)
at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:71)
at org.apache.el.parser.AstValue.getValue(AstValue.java:160)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)
at org.hibernate.validator.internal.engine.messageinterpolation.InterpolationTerm.interpolateExpressionLanguageTerm(InterpolationTerm.java:112)
at org.hibernate.validator.internal.engine.messageinterpolation.InterpolationTerm.interpolate(InterpolationTerm.java:90)
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.interpolateExpression(ResourceBundleMessageInterpolator.java:342)
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.interpolateMessage(ResourceBundleMessageInterpolator.java:298)
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.interpolate(ResourceBundleMessageInterpolator.java:194)
at org.springframework.validation.beanvalidation.LocaleContextMessageInterpolator.interpolate(LocaleContextMessageInterpolator.java:50)
at org.hibernate.validator.internal.engine.ValidationContext.interpolate(ValidationContext.java:362)
at org.hibernate.validator.internal.engine.ValidationContext.createConstraintViolation(ValidationContext.java:271)
at org.hibernate.validator.internal.engine.ValidationContext.createConstraintViolations(ValidationContext.java:232)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateSingleConstraint(ConstraintTree.java:291)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:133)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:91)
at org.hibernate.validator.internal.metadata.core.MetaConstraint.validateConstraint(MetaConstraint.java:84)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:525)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:465)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:429)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:381)
at org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:184)
at org.springframework.validation.beanvalidation.SpringValidatorAdapter.validate(SpringValidatorAdapter.java:108)
at org.springframework.validation.DataBinder.validate(DataBinder.java:782)
at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.validateIfApplicable(ModelAttributeMethodProcessor.java:164)
at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:111)
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:78)
at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:162)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:129)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:775)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:965)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:867)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:841)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1074)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Person.java
@Entity
@Table(name="PERSON")
public class Person {
@Id
@Column(name="id")
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
@SafeHtml(whitelistType=WhiteListType.NONE, message="{html.validation.firstName}")
@Length(max=50,min=2,message="${length.validation.firstName}")
@Column(name="FIRST_NAME")
private String firstname;
@SafeHtml(whitelistType=WhiteListType.NONE, message="{html.validation.lastName}")
@Length(max=50,min=2,message="${length.validation.lastName}")
@Column(name="LAST_NAME")
private String lastname;
@SafeHtml(whitelistType=WhiteListType.NONE, message="{html.validation.country}")
@Length(max=50,min=2,message="${length.validation.country}")
@Column(name="COUNTRY")
private String country;
@SafeHtml(whitelistType = SafeHtml.WhiteListType.NONE, message = "{html.validation.emailId}")
@Length(max = 20, message = "${length.validation.emailId}")
@Pattern(regexp = "^(.+)@(.+)$")
@Column(name="EMAIL_ID")
private String emailId;
// setters and getters
}
的persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="spring-data-jpa-krishna" transaction-type="RESOURCE_LOCAL">
<class>com.journaldev.spring.model.Person</class>
</persistence-unit>
</persistence>
messages_en.properties
html.validation.firstName=Invalid First Name
length.validation.firstName=First Name should be 2 to 50 lenght in characters
html.validation.lastName=Invalid Last Name
length.validation.lastName=Last Name should be 2 to 50 lenght in characters
html.validation.country=Invalid Country Name
length.validation.country=Country Name should be 2 to 50 lenght in characters
html.validation.emailId=Invalid Email ID
length.validation.emailId=Email ID length should not be more than 11 characters
的pom.xml
<properties>
<java.version>1.7</java.version>
<org.springframework-version>4.1.9.RELEASE</org.springframework-version>
<org.aspectj-version>1.7.4</org.aspectj-version>
<org.slf4j-version>1.7.5</org.slf4j-version>
<hibernate.version>5.1.0.Final</hibernate.version>
<validation-api.version>1.1.0.Final</validation-api.version>
<hibernate-validator.version>5.1.1.Final</hibernate-validator.version>
<jsoup-version>1.8.1</jsoup-version>
<spring-data-jpa-version>1.9.2.RELEASE</spring-data-jpa-version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>${validation-api.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>${hibernate-validator.version}</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<!-- Querydsl dependencies -->
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-core</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-apt</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-jpa</artifactId>
<version>3.3.2</version>
</dependency>
<!-- Logging -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${org.slf4j-version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>
<!-- LOG4J -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>${spring-data-jpa-version}</version>
</dependency>
<!-- Needed for Hibernate Validation -->
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>${jsoup-version}</version>
</dependency>
<dependency>
<groupId>com.google.code.findbugs</groupId>
<artifactId>jsr305</artifactId>
<version>3.0.0</version>
</dependency>
<!-- @Inject -->
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
<!-- JSP API -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
<!-- Servlet API -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<!-- JSTL -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- Junit Test -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.37</version>
</dependency>
</dependencies>
<!-- Project Build -->
<build>
<finalName>spring-mvc-jpa-hibernate</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<compilerArgument>-Xlint:all</compilerArgument>
<showWarnings>true</showWarnings>
<showDeprecation>true</showDeprecation>
</configuration>
</plugin>
<plugin>
<groupId>com.mysema.maven</groupId>
<artifactId>apt-maven-plugin</artifactId>
<version>1.1.1</version>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>process</goal>
</goals>
<configuration>
<!-- Specifies the directory in which the query types are generated -->
<outputDirectory>target/generated-sources</outputDirectory>
<!-- States that the APT code generator should look for JPA annotations -->
<processor>com.mysema.query.apt.jpa.JPAAnnotationProcessor</processor>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
PersonRepository.java
@Repository
public interface PersonRepository extends JpaRepository<Person, Integer>{
Person findById(int id);
}
servlet的context.xml中
<!-- Enables the Spring MVC @Controller programming model -->
<annotation-driven />
<context:component-scan base-package="com.journaldev.spring.controller" />
<!-- Load database.properties file -->
<context:property-placeholder location="classpath:database.properties" />
<!-- Enable JPA Reporitories -->
<jpa:repositories base-package="com.journaldev.spring.repository" />
<!-- Enable Transactional Manner -->
<tx:annotation-driven transaction-manager="transactionManager" />
<!-- Necessary to get the entity manager injected into the factory bean -->
<beans:bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<!-- ====== MYSQL DataSource ====== -->
<beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<beans:property name="driverClassName" value="${mysql.jdbc.driverClassName}" />
<beans:property name="url" value="${mysql.jdbc.url}" />
<beans:property name="username" value="${mysql.jdbc.userName}" />
<beans:property name="password" value="${mysql.jdbc.password}" />
</beans:bean>
<!-- ====== Hibernate JPA Vendor Adaptor ======= -->
<beans:bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<beans:property name="showSql" value="true"/>
<beans:property name="generateDdl" value="true"/>
<beans:property name="database" value="MYSQL"/>
</beans:bean>
<!-- Beans -->
<beans:bean id="personService" class="com.journaldev.spring.service.PersonServiceImpl" />
<beans:bean id="visitService" class="com.journaldev.spring.service.VisitServiceImpl" />
<!-- ======== Entity Manager factory ======== -->
<beans:bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<!-- Data Source -->
<beans:property name="dataSource" ref="dataSource"/>
<!-- JPA Vendor Adaptor -->
<beans:property name="jpaVendorAdapter" ref="jpaVendorAdapter"/>
<!-- spring based scanning for entity classes-->
<beans:property name="packagesToScan" value="com.journaldev.spring.*" />
<beans:property name="jpaProperties">
<beans:props>
<beans:prop key="hibernate.hbm2ddl.auto">update</beans:prop> <!-- validate | update | create | create-drop -->
<beans:prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</beans:prop>
<!-- <beans:prop key="hibernate.cache.use_query_cache">true</beans:prop> -->
</beans:props>
</beans:property>
</beans:bean>
<!-- ======== Transaction Manager ==== -->
<beans:bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<beans:property name="entityManagerFactory" ref="entityManagerFactory" />
</beans:bean>
<!-- Localization of hibernate messages during validation!-->
<beans:bean id="validationMessageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<beans:property name="basename" value="classpath:messages" />
</beans:bean>
<beans:bean name="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<beans:property name="validationMessageSource">
<beans:ref bean="validationMessageSource"/>
</beans:property>
</beans:bean>
<!-- This is for JSP -->
<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
答案 0 :(得分：0)
您永远不应该使用$作为占位符。只需使用以下代码。这将解决您的错误：
@Entity
@Table(name="PERSON")
public class Person {
@Id
@Column(name="id")
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
@SafeHtml(whitelistType=WhiteListType.NONE, message="{html.validation.firstName}")
@Length(max=50,min=2,message="{length.validation.firstName}")
@Column(name="FIRST_NAME")
private String firstname;
@SafeHtml(whitelistType=WhiteListType.NONE, message="{html.validation.lastName}")
@Length(max=50,min=2,message="{length.validation.lastName}")
@Column(name="LAST_NAME")
private String lastname;
@SafeHtml(whitelistType=WhiteListType.NONE, message="{html.validation.country}")
@Length(max=50,min=2,message="{length.validation.country}")
@Column(name="COUNTRY")
private String country;
@SafeHtml(whitelistType = SafeHtml.WhiteListType.NONE, message = "{html.validation.emailId}")
@Length(max = 20, message = "{length.validation.emailId}")
@Pattern(regexp = "^(.+)@(.+)$")
@Column(name="EMAIL_ID")
private String emailId;
// setters and getters
}