Receiving the error Invalid property 'packagesToScan' of class bean [..]. bean property 'packagesToScan' is not writable or has an invalid setter method

Question

I get the following error

Called: org.springframework.beans.NotWritablePropertyException: Invalid property 'packagesToScan' from bean class [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean]: Bean The 'packagesToScan' property is not writable or has an invalid setter method. Is there a setter parameter type that matches the recipient return type? \

I am using spring3.2. Dependencies are added using MAven. Everything looks fine. Why am I getting this error. Here is my file

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jpa="http://www.springframework.org/schema/data/jpa" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> .... <bean id="emf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="jpaVendorAdapter"> <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" /> </property> <property name="packagesToScan" value="pk.training.basitMahmood.domain"/> <property name="jpaProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.H2Dialect</prop> <prop key="hibernate.max_fetch_depth">3</prop> <prop key="hibernate.jdbc.fetch_size">50</prop> <prop key="hibernate.jdbc.batch_size">10</prop> <prop key="hibernate.show_sql">true</prop> </props> </property> </bean> <context:annotation-config/> ..... </beans> 

thanks

Answer 1

Not sure about your ToScan packages? hope you use annotation like @Table, @Entity, @column ... you don't need any packages to scan. when you try to spoil the entity, hibernate will read the annotation my answer is to simply delete this line

UPDATE config.dao.xml

  <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> <property name="persistenceXmlLocation" value="classpath:./META-INF/persistence.xml" /> <property name="dataSource" ref="dataSource" /> <property name="jpaVendorAdapter"> <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"> <property name="databasePlatform" value="org.hibernate.dialect.H2Dialect" /> <property name="showSql" value="true" /> <property name="generateDdl" value="false" /> </bean> </property> <property name="jpaProperties"> <props> <prop key="hibernate.max_fetch_depth">3</prop> <prop key="hibernate.jdbc.fetch_size">50</prop> <prop key="hibernate.jdbc.batch_size">10</prop> </props> </property> </bean> 

persitence.xml

 <?xml version="1.0" encoding="UTF-8" standalone="no"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.0" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"> <persistence-unit name="default" transaction-type="RESOURCE_LOCAL"> </persistence-unit> </persistence> 

Answer 2

I solved this problem. In fact, I think my POM was wrong. I did a spring MVC project and, firstly, my POM, as shown below. I think using this POM, I had so many jar conflicts, since maven uses a transitive approach to load cans.

 <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>pk.training.basitMahmood</groupId> <artifactId>ch17_ThemingAndTemplating</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>ch17_ThemingAndTemplating Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <org.springframework-version>3.2.2.RELEASE</org.springframework-version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jpa</artifactId> <version>2.0.8</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>3.2.3.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-jpa</artifactId> <version>1.3.2.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-commons</artifactId> <version>1.5.1.RELEASE</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>4.3.0.Beta2</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> <version>4.3.0.Beta2</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>5.0.1.Final</version> </dependency> <dependency> <groupId>org.hibernate.javax.persistence</groupId> <artifactId>hibernate-jpa-2.1-api</artifactId> <version>1.0.0.Draft-16</version> </dependency> <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> <version>1.3.171</version> </dependency> <dependency> <groupId>javax.validation</groupId> <artifactId>validation-api</artifactId> <version>1.1.0.Final</version> </dependency> <dependency> <groupId>joda-time</groupId> <artifactId>joda-time</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>joda-time</groupId> <artifactId>joda-time-hibernate</artifactId> <version>1.3</version> </dependency> <dependency> <groupId>joda-time</groupId> <artifactId>joda-time-jsptags</artifactId> <version>1.1.1</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.5</version> </dependency> <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>14.0.1</version> </dependency> </dependencies> <build> <finalName>ch17_ThemingAndTemplating</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <encoding>${project.build.sourceEncoding}</encoding> <source>1.6</source> <target>1.6</target> </configuration> </plugin> </plugins> </build> </project> 

But when I changed my POM to

 <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>pk.training.basitMahmood</groupId> <artifactId>ch17_WebApplicationWithSpring</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>ch17_WebApplicationWithSpring Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <java-version>1.6</java-version> <org.springframework-version>3.2.3.RELEASE</org.springframework-version> <org.aspectj-version>1.6.10</org.aspectj-version> <org.slf4j-version>1.7.5</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> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</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.springframework</groupId> <artifactId>spring-orm</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-jpa</artifactId> <version>1.3.2.RELEASE</version> </dependency> <!-- Hibernate entity manager with JPA 2 support. --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> <version>4.3.0.Beta2</version> </dependency> <!-- Hibernate's implementation of JSR-303. --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>5.0.1.Final</version> </dependency> <!-- The JSR-303 Bean Validation API library. --> <dependency> <groupId>javax.validation</groupId> <artifactId>validation-api</artifactId> <version>1.1.0.Final</version> </dependency> <!-- H2 database for embedded JDBC database. --> <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> <version>1.3.171</version> </dependency> <!-- Joda-time (joda-time.sourceforge.net/) is a date-time API that Spring Data JPA uses. We will use it in our domain objects too. --> <dependency> <groupId>joda-time</groupId> <artifactId>joda-time</artifactId> <version>2.2</version> </dependency> <!-- Joda-time library for integration with Hibernate for date-time data persistence. For hibernate 3 <dependency> <groupId>joda-time</groupId> <artifactId>joda-time-hibernate</artifactId> <version>1.3</version> </dependency> --> <dependency> <groupId>org.jadira.usertype</groupId> <!-- Hibernate 4 --> <artifactId>usertype.core</artifactId> <version>3.1.0.CR6</version> </dependency> <!-- Contains useful helper classes. --> <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>14.0.1</version> </dependency> <!-- AspectJ --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>${org.aspectj-version}</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>${org.slf4j-version}</version> <scope>test</scope> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.15</version> <exclusions> <exclusion> <groupId>javax.mail</groupId> <artifactId>mail</artifactId> </exclusion> <exclusion> <groupId>javax.jms</groupId> <artifactId>jms</artifactId> </exclusion> <exclusion> <groupId>com.sun.jdmk</groupId> <artifactId>jmxtools</artifactId> </exclusion> <exclusion> <groupId>com.sun.jmx</groupId> <artifactId>jmxri</artifactId> </exclusion> </exclusions> <scope>runtime</scope> </dependency> <!-- @Inject --> <dependency> <groupId>javax.inject</groupId> <artifactId>javax.inject</artifactId> <version>1</version> </dependency> <!-- Servlet --> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- Test --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.7</version> <scope>test</scope> </dependency> </dependencies> <build> <finalName>WebApplicationWithSpring</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <encoding>${project.build.sourceEncoding}</encoding> <source>1.6</source> <target>1.6</target> <!-- specifiy which directory within the project hierarchy will be considered as the root directory from the generated war file <warSourceDirectory>WebContent</warSourceDirectory> --> </configuration> </plugin> </plugins> </build> </project> 

Then everything starts to work. The error has disappeared. Hope this helps others too. Thanks

Answer 3

Looking at Spring 3.2.3 source, I noticed that there really is no getPackagesToScan() method in org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean , so BeanUtils right to throw this exception!